beta 2014.01.24 10:20

48 files changed, 18815 insertions, 117 deletions

diff --git a/doc/context/manuals/allkind/mkiv-publications.tex b/doc/context/manuals/allkind/mkiv-publications.tex
index f498fd622..8c3dc63c1 100644
--- a/doc/context/manuals/allkind/mkiv-publications.tex
+++ b/doc/context/manuals/allkind/mkiv-publications.tex
@@ -1,4 +1,6 @@
-% language=uk engine=luajittex
+% language=uk
+
+% engine=luajittex
 
 % criterium: all + sorttype=cite     => citex before rest
 % criterium: all + sorttype=database => database order
diff --git a/scripts/context/lua/mtxrun.lua b/scripts/context/lua/mtxrun.lua
index ca5957f70..24f5e7744 100644
--- a/scripts/context/lua/mtxrun.lua
+++ b/scripts/context/lua/mtxrun.lua
@@ -16805,17 +16805,18 @@ local ownlibs = { -- order can be made better
 
 }
 
+-- c:/data/develop/tex-context/tex/texmf-win64/bin/../../texmf-context/tex/context/base/data-tmf.lua
+-- c:/data/develop/context/sources/data-tmf.lua
+
 local ownlist = {
-    '.',
-    ownpath ,
-    ownpath .. "/../sources", -- HH's development path
+ -- '.',
+ -- ownpath ,
+    owntree .. "/../../../../context/sources", -- HH's development path
     owntree .. "/../../texmf-local/tex/context/base",
     owntree .. "/../../texmf-context/tex/context/base",
-    owntree .. "/../../texmf-dist/tex/context/base",
     owntree .. "/../../texmf/tex/context/base",
     owntree .. "/../../../texmf-local/tex/context/base",
     owntree .. "/../../../texmf-context/tex/context/base",
-    owntree .. "/../../../texmf-dist/tex/context/base",
     owntree .. "/../../../texmf/tex/context/base",
 }
 
@@ -17745,8 +17746,16 @@ elseif e_argument("selfmerge") then
 
     runners.loadbase()
     local found = locate_libs()
+
     if found then
-        utilities.merger.selfmerge(own.name,own.libs,{ found })
+        local mtxrun = resolvers.findfile("mtxrun.lua") -- includes local name
+        if lfs.isfile(mtxrun) then
+            utilities.merger.selfmerge(mtxrun,own.libs,{ found })
+            application.report("runner updated on resolved path: %s",mtxrun)
+        else
+            utilities.merger.selfmerge(own.name,own.libs,{ found })
+            application.report("runner updated on relative path: %s",own.name)
+        end
     end
 
 elseif e_argument("selfclean") then
@@ -17754,7 +17763,15 @@ elseif e_argument("selfclean") then
     -- remove embedded libraries
 
     runners.loadbase()
-    utilities.merger.selfclean(own.name)
+
+    local mtxrun = resolvers.findfile("mtxrun.lua") -- includes local name
+    if lfs.isfile(mtxrun) then
+        utilities.merger.selfclean(mtxrun)
+        application.report("runner cleaned on resolved path: %s",mtxrun)
+    else
+        utilities.merger.selfclean(own.name)
+        application.report("runner cleaned on relative path: %s",own.name)
+    end
 
 elseif e_argument("selfupdate") then
 
@@ -17996,6 +18013,8 @@ elseif e_argument("version") then
 
     application.version()
 
+    application.report("source path",environment.ownbin)
+
 elseif e_argument("directives") then
 
     directives.show()
diff --git a/scripts/context/stubs/mswin/first-setup.bat b/scripts/context/stubs/install/first-setup.bat
index f06ad0e6b..f06ad0e6b 100755
--- a/scripts/context/stubs/mswin/first-setup.bat
+++ b/scripts/context/stubs/install/first-setup.bat
diff --git a/scripts/context/stubs/install/first-setup.sh b/scripts/context/stubs/install/first-setup.sh
new file mode 100644
index 000000000..9249fd2e0
--- /dev/null
+++ b/scripts/context/stubs/install/first-setup.sh
@@ -0,0 +1,120 @@
+#!/bin/sh
+
+# Takes the same arguments as mtx-update
+
+# you may change this if you want ...
+CONTEXTROOT="$PWD/tex"
+
+# suggested by Tobias Florek to check for ruby & rsync
+if [ ! -x "`which rsync`" ]; then
+	echo "You need to install rsync first."
+	exit 1
+fi
+if [ ! -x "`which ruby`" ]; then
+	echo "You might want to install Ruby first if you want to use pdfTeX or XeTeX."
+fi
+
+system=`uname -s`
+cpu=`uname -m`
+
+case "$system" in
+	# linux
+	Linux)
+		case "$cpu" in
+			i*86) platform="linux" ;;
+			x86_64|ia64) platform="linux-64" ;;
+			# a little bit of cheating with ppc64 (won't work on Gentoo)
+			ppc|ppc64) platform="linux-ppc" ;;
+			# we currently support just mipsel, but Debian is lying (reports mips64)
+			# we need more hacks to fix the situation, this is just a temporary solution
+			mips|mips64|mipsel|mips64el) platform="linux-mipsel" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	# Mac OS X
+	Darwin)
+		case "$cpu" in
+			i*86) platform="osx-intel" ;;
+			x86_64) platform="osx-64" ;;
+			ppc*|powerpc|power*|Power*) platform="osx-ppc" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	# FreeBSD
+	FreeBSD|freebsd)
+		case "$cpu" in
+			i*86) platform="freebsd" ;;
+			x86_64) platform="freebsd" ;; # no special binaries are available yet
+			amd64) platform="freebsd-amd64" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	# kFreeBSD (debian)
+	GNU/kFreeBSD)
+		case "$cpu" in
+			i*86) platform="kfreebsd-i386" ;;
+			x86_64|amd64) platform="kfreebsd-amd64" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	# cygwin
+	CYGWIN*)
+		case "$cpu" in
+			i*86) platform="cygwin" ;;
+			x86_64|ia64) platform="cygwin-64" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	# SunOS/Solaris
+	SunOS)
+		case "$cpu" in
+			sparc) platform="solaris-sparc" ;;
+			i86pc) platform="solaris-intel" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	*) platform="unknown"
+esac
+
+# temporary patch for 64-bit Leopard with 32-bit kernel
+if test "$platform" = "osx-intel"; then
+	# if running Snow Leopard or later
+	# better: /usr/bin/sw_vers -productVersion
+	if test `uname -r|cut -f1 -d"."` -ge 10 ; then
+		# if working on 64-bit hardware
+		if test `sysctl -n hw.cpu64bit_capable` = 1; then
+			# snowleopard32=TRUE
+			platform="osx-64"
+		fi
+	fi
+fi
+
+if test "$platform" = "unknown" ; then
+	echo "Error: your system \"$system $cpu\" is not supported yet."
+	echo "Please report to the ConTeXt mailing-list (ntg-context@ntg.nl)"
+	exit
+fi
+
+# if you want to enforce some specific platform
+# (when 'uname' doesn't agree with true architecture), uncomment and modify next line:
+# platform=linux
+
+# download or rsync the latest scripts first
+rsync -rlptv rsync://contextgarden.net/minimals/setup/$platform/bin .
+
+# download or update the distribution
+# you may remove the --context=beta switch if you want to use "current"
+# you can use --engine=luatex if you want just mkiv
+env PATH="$PWD/bin:$CONTEXTROOT/texmf-$platform/bin:$PATH" \
+mtxrun --script ./bin/mtx-update.lua --force --update --make --context=beta --platform=$platform --texroot="$CONTEXTROOT" $@
+
+echo
+echo "When you want to use context, you need to initialize the tree by typing:"
+echo
+echo "  . $CONTEXTROOT/setuptex"
+echo
+echo "in your shell or add"
+echo "  \"$CONTEXTROOT/texmf-$platform/bin\""
+echo "to PATH variable if you want to set it permanently."
+echo "This can usually be done in .bashrc, .bash_profile"
+echo "(or whatever file is used to initialize your shell)."
+echo
+
+if [ ! -x "`which ruby`" ]; then
+	echo "You might want to install Ruby first if you want to use pdfTeX or XeTeX."
+	echo
+fi
diff --git a/scripts/context/stubs/mswin/context.exe b/scripts/context/stubs/mswin/context.exe
index 6b2c88311..0e7882cf9 100755
--- a/scripts/context/stubs/mswin/context.exe
+++ b/scripts/context/stubs/mswin/context.exe
diff --git a/scripts/context/stubs/mswin/ctxtools.exe b/scripts/context/stubs/mswin/ctxtools.exe
index 6b2c88311..0e7882cf9 100755
--- a/scripts/context/stubs/mswin/ctxtools.exe
+++ b/scripts/context/stubs/mswin/ctxtools.exe
diff --git a/scripts/context/stubs/mswin/luatools.exe b/scripts/context/stubs/mswin/luatools.exe
index 6b2c88311..0e7882cf9 100755
--- a/scripts/context/stubs/mswin/luatools.exe
+++ b/scripts/context/stubs/mswin/luatools.exe
diff --git a/scripts/context/stubs/mswin/metatex.exe b/scripts/context/stubs/mswin/metatex.exe
index 6b2c88311..0e7882cf9 100755
--- a/scripts/context/stubs/mswin/metatex.exe
+++ b/scripts/context/stubs/mswin/metatex.exe
diff --git a/scripts/context/stubs/mswin/mptopdf.exe b/scripts/context/stubs/mswin/mptopdf.exe
index 6b2c88311..0e7882cf9 100755
--- a/scripts/context/stubs/mswin/mptopdf.exe
+++ b/scripts/context/stubs/mswin/mptopdf.exe
diff --git a/scripts/context/stubs/mswin/mtxrun.dll b/scripts/context/stubs/mswin/mtxrun.dll
index 943e76a4b..3c4481c31 100644
--- a/scripts/context/stubs/mswin/mtxrun.dll
+++ b/scripts/context/stubs/mswin/mtxrun.dll
diff --git a/scripts/context/stubs/mswin/mtxrun.exe b/scripts/context/stubs/mswin/mtxrun.exe
index 6b2c88311..0e7882cf9 100755
--- a/scripts/context/stubs/mswin/mtxrun.exe
+++ b/scripts/context/stubs/mswin/mtxrun.exe
diff --git a/scripts/context/stubs/mswin/mtxrun.lua b/scripts/context/stubs/mswin/mtxrun.lua
index ca5957f70..24f5e7744 100644
--- a/scripts/context/stubs/mswin/mtxrun.lua
+++ b/scripts/context/stubs/mswin/mtxrun.lua
@@ -16805,17 +16805,18 @@ local ownlibs = { -- order can be made better
 
 }
 
+-- c:/data/develop/tex-context/tex/texmf-win64/bin/../../texmf-context/tex/context/base/data-tmf.lua
+-- c:/data/develop/context/sources/data-tmf.lua
+
 local ownlist = {
-    '.',
-    ownpath ,
-    ownpath .. "/../sources", -- HH's development path
+ -- '.',
+ -- ownpath ,
+    owntree .. "/../../../../context/sources", -- HH's development path
     owntree .. "/../../texmf-local/tex/context/base",
     owntree .. "/../../texmf-context/tex/context/base",
-    owntree .. "/../../texmf-dist/tex/context/base",
     owntree .. "/../../texmf/tex/context/base",
     owntree .. "/../../../texmf-local/tex/context/base",
     owntree .. "/../../../texmf-context/tex/context/base",
-    owntree .. "/../../../texmf-dist/tex/context/base",
     owntree .. "/../../../texmf/tex/context/base",
 }
 
@@ -17745,8 +17746,16 @@ elseif e_argument("selfmerge") then
 
     runners.loadbase()
     local found = locate_libs()
+
     if found then
-        utilities.merger.selfmerge(own.name,own.libs,{ found })
+        local mtxrun = resolvers.findfile("mtxrun.lua") -- includes local name
+        if lfs.isfile(mtxrun) then
+            utilities.merger.selfmerge(mtxrun,own.libs,{ found })
+            application.report("runner updated on resolved path: %s",mtxrun)
+        else
+            utilities.merger.selfmerge(own.name,own.libs,{ found })
+            application.report("runner updated on relative path: %s",own.name)
+        end
     end
 
 elseif e_argument("selfclean") then
@@ -17754,7 +17763,15 @@ elseif e_argument("selfclean") then
     -- remove embedded libraries
 
     runners.loadbase()
-    utilities.merger.selfclean(own.name)
+
+    local mtxrun = resolvers.findfile("mtxrun.lua") -- includes local name
+    if lfs.isfile(mtxrun) then
+        utilities.merger.selfclean(mtxrun)
+        application.report("runner cleaned on resolved path: %s",mtxrun)
+    else
+        utilities.merger.selfclean(own.name)
+        application.report("runner cleaned on relative path: %s",own.name)
+    end
 
 elseif e_argument("selfupdate") then
 
@@ -17996,6 +18013,8 @@ elseif e_argument("version") then
 
     application.version()
 
+    application.report("source path",environment.ownbin)
+
 elseif e_argument("directives") then
 
     directives.show()
diff --git a/scripts/context/stubs/mswin/mtxrunjit.exe b/scripts/context/stubs/mswin/mtxrunjit.exe
index 6b2c88311..0e7882cf9 100755
--- a/scripts/context/stubs/mswin/mtxrunjit.exe
+++ b/scripts/context/stubs/mswin/mtxrunjit.exe
diff --git a/scripts/context/stubs/mswin/mtxworks.exe b/scripts/context/stubs/mswin/mtxworks.exe
index 6b2c88311..0e7882cf9 100755
--- a/scripts/context/stubs/mswin/mtxworks.exe
+++ b/scripts/context/stubs/mswin/mtxworks.exe
diff --git a/scripts/context/stubs/mswin/pstopdf.exe b/scripts/context/stubs/mswin/pstopdf.exe
index 6b2c88311..0e7882cf9 100755
--- a/scripts/context/stubs/mswin/pstopdf.exe
+++ b/scripts/context/stubs/mswin/pstopdf.exe
diff --git a/scripts/context/stubs/mswin/texexec.exe b/scripts/context/stubs/mswin/texexec.exe
index 6b2c88311..0e7882cf9 100755
--- a/scripts/context/stubs/mswin/texexec.exe
+++ b/scripts/context/stubs/mswin/texexec.exe
diff --git a/scripts/context/stubs/mswin/texmfstart.exe b/scripts/context/stubs/mswin/texmfstart.exe
index 6b2c88311..0e7882cf9 100755
--- a/scripts/context/stubs/mswin/texmfstart.exe
+++ b/scripts/context/stubs/mswin/texmfstart.exe
diff --git a/scripts/context/stubs/setup/setuptex b/scripts/context/stubs/setup/setuptex
new file mode 100644
index 000000000..d41e36707
--- /dev/null
+++ b/scripts/context/stubs/setup/setuptex
@@ -0,0 +1,167 @@
+# Example setup file for ConTeXt distribution
+#
+# Author:  Hans Hagen
+# Patches: Arthur R. & Mojca M.
+#
+# Usage:
+#   . setuptex [texroot]
+#
+# On the first run also execute:
+#   mktexlsr
+#   texexec --make --alone
+
+#
+# PLATFORM
+#
+
+# we will try to guess the platform first
+# (needs to be kept in sync with first-setup.sh and mtxrun)
+# if yours is missing, let us know
+
+system=`uname -s`
+cpu=`uname -m`
+
+case "$system" in
+	# linux
+	Linux)
+		case "$cpu" in
+			i*86) platform="linux" ;;
+			x86_64|ia64) platform="linux-64" ;;
+			# a little bit of cheating with ppc64 (won't work on Gentoo)
+			ppc|ppc64) platform="linux-ppc" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	# Mac OS X
+	Darwin)
+		case "$cpu" in
+			i*86) platform="osx-intel" ;;
+			x86_64) platform="osx-64" ;;
+			ppc*|powerpc|power*|Power*) platform="osx-ppc" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	# FreeBSD
+	FreeBSD|freebsd)
+		case "$cpu" in
+			i*86) platform="freebsd" ;;
+			x86_64) platform="freebsd" ;;
+			amd64) platform="freebsd-amd64" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	# kFreeBSD (Debian)
+	GNU/kFreeBSD)
+		case "$cpu" in
+			i*86) platform="kfreebsd-i386" ;;
+			x86_64|amd64) platform="kfreebsd-amd64" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	# cygwin
+	CYGWIN)
+		case "$cpu" in
+			i*86) platform="cygwin" ;;
+			x86_64|ia64) platform="cygwin-64" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	# SunOS/Solaris
+	SunOS)
+		case "$cpu" in
+			sparc) platform="solaris-sparc" ;;
+			i86pc) platform="solaris-intel" ;;
+			*) platform="unknown" ;;
+		esac ;;
+	*) platform="unknown"
+esac
+
+# temporary fix for Snow Leopard
+if test "$platform" = "osx-intel"; then
+	# running Snow Leopard or later
+	if test `uname -r|cut -f1 -d"."` -ge 10 ; then
+		# working on 64-bit hardware
+		if test `sysctl -n hw.cpu64bit_capable` = 1; then
+			platform="osx-64"
+		fi
+	fi
+fi
+
+if test "$platform" = "unknown" ; then
+	echo "Error: your system \"$system $cpu\" is not supported yet."
+	echo "Please report to the ConTeXt mailing-list (ntg-context@ntg.nl)"
+fi
+
+#
+# PATH
+#
+
+# this resolves to path of the setuptex script
+# We use $0 for determine the path to the script, except for:
+# * bash where $0 always is bash; here we use BASH_SOURCE
+# * ksh93 where we use ${.sh.file}
+# Thanks to Vasile Gaburici and Alessandro Perucchi for reporting this
+# * http://www.ntg.nl/pipermail/ntg-context/2008/033953.html
+# * http://www.ntg.nl/pipermail/ntg-context/2012/068658.html
+if [ z"$BASH_SOURCE" != z ]; then
+	SCRIPTPATH="$BASH_SOURCE"
+elif [ z"$KSH_VERSION" != z ]; then
+   	SCRIPTPATH="${.sh.file}"
+else
+	SCRIPTPATH="$0"
+fi
+
+OWNPATH=$(cd -P -- "$(dirname -- "$SCRIPTPATH")" && pwd -P)
+
+# but one can also call
+# . setuptex path-to-tree
+
+TEXROOT=""
+# first check if any path has been provided in the argument, and try to use that one
+if [ $# -ne 0 ] ; then
+	# TODO: resolve any errors
+	ARGPATH=$(cd -P -- "$(dirname -- "$1")" && pwd -P) && ARGPATH=$ARGPATH/$(basename -- "$1")
+	if test -f "$ARGPATH/texmf/tex/plain/base/plain.tex" ; then
+		if [ -d "$ARGPATH/texmf-$platform/bin" ]; then
+			TEXROOT="$ARGPATH"
+		else
+			echo "Binaries for platform '$platform' are missing."
+			echo "(There is no folder \"$ARGPATH/texmf-$platform/bin\")"
+		fi
+	else
+		echo "The argument \"$ARGPATH\" is not a valid TEXROOT path."
+		echo "(There is no file \"$ARGPATH/texmf/tex/plain/base/plain.tex\")"
+
+		if [ -f "$OWNPATH/texmf/tex/plain/base/plain.tex" ]; then
+			TEXROOT="$OWNPATH"
+		fi
+	fi
+else
+	if [ -f "$OWNPATH/texmf/tex/plain/base/plain.tex" ]; then
+		if [ -d "$OWNPATH/texmf-$platform/bin" ]; then
+			TEXROOT="$OWNPATH"
+		else
+			echo "Binaries for platform '$platform' are missing."
+			echo "(There is no folder \"$OWNPATH/texmf-$platform/bin\")"
+		fi
+	else
+		echo "\"$OWNPATH\" is not a valid TEXROOT path."
+		echo "(There is no file \"$OWNPATH/texmf/tex/plain/base/plain.tex\")"
+	fi
+fi
+
+if [ "$TEXROOT" != "" ]; then
+	# for Alan Braslau's server :)
+	if [ "x$PS1" != "x" ] ; then
+		echo "Setting \"$TEXROOT\" as ConTeXt root."
+	fi
+
+# ConTeXt binaries have to be added to PATH
+TEXMFOS=$TEXROOT/texmf-$platform
+export PATH=$TEXMFOS/bin:$PATH
+
+# unset variables that won't be used lately
+unset platform cpu system OWNPATH SCRIPTPATH ARGPATH TEXMFOS
+
+# not sure why this would be needed
+# export CTXMINIMAL=yes
+
+else
+	echo "provide a proper tex root (like '. setuptex /something/tex')" ;
+fi
+
diff --git a/scripts/context/stubs/mswin/setuptex.bat b/scripts/context/stubs/setup/setuptex.bat
index b61fd4494..b61fd4494 100755
--- a/scripts/context/stubs/mswin/setuptex.bat
+++ b/scripts/context/stubs/setup/setuptex.bat
diff --git a/scripts/context/stubs/setup/setuptex.csh b/scripts/context/stubs/setup/setuptex.csh
new file mode 100644
index 000000000..c1160675f
--- /dev/null
+++ b/scripts/context/stubs/setup/setuptex.csh
@@ -0,0 +1,164 @@
+# Example setup file for ConTeXt distribution
+#
+# Author:  Hans Hagen
+# Patches: Arthur R. & Mojca M.
+# (t)csh version: Alan B.
+#
+# Usage :
+#   source setuptex.csh [texroot]
+#
+# On the first run also execute:
+#   mktexlsr
+#   texexec --make --alone
+
+echo "We are considering removing setuptex.csh in case that nobody uses it."
+echo "If you still use this file please drop us some mail at"
+echo "    gardeners (at) contextgarden (dot) net"
+echo "If we don't get any response, we will delete it in near future."
+
+#
+# PLATFORM
+#
+
+# we will try to guess the platform first
+# (needs to be kept in sync with first-setup.sh and mtxrun)
+# if yours is missing, let us know
+
+set system=`uname -s`
+set cpu=`uname -m`
+
+switch ( $system )
+  # linux
+  case Linux:
+    switch ( $cpu )
+      case i*86:
+        set platform="linux"
+        breaksw
+      case x86_64:
+      case ia64:
+        set platform="linux-64"
+        breaksw
+      case ppc:
+      case ppc64:
+        set platform="linux-ppc"
+        breaksw
+      default:
+        set platform="unknown"
+    endsw
+    breaksw
+  # Mac OS X
+  case Darwin:
+    switch ( $cpu )
+      case i*86:
+        set platform="osx-intel"
+        breaksw
+      case x86_64:
+        set platform="osx-64"
+        breaksw
+      case ppc*:
+      case powerpc:
+      case power*:
+      case Power*:
+        set platform="osx-ppc"
+        breaksw
+      default:
+        set platform="unknown"
+    endsw
+    breaksw
+  # FreeBSD
+  case FreeBSD:
+  case freebsd:
+    switch ( $cpu )
+      case i*86:
+        set platform="freebsd"
+        breaksw
+      case x86_64:
+        set platform="freebsd"
+        breaksw
+      case amd64:
+        set platform="freebsd-amd64"
+        breaksw
+      default:
+        set platform="unknown"
+    endsw
+    breaksw
+  # cygwin
+  case CYGWIN:
+    switch ( $cpu )
+      case i*86:
+        set platform="cygwin"
+        breaksw
+      case x86_64:
+      case ia64:
+        set platform="cygwin-64"
+        breaksw
+      default:
+        set platform="unknown"
+    endsw
+    breaksw
+  # SunOS/Solaris
+  case SunOS:
+    switch ( $cpu )
+      case sparc:
+        set platform="solaris-sparc"
+        breaksw
+      case i86pc:
+        set platform="solaris-intel"
+      default:
+        set platform="unknown"
+    endsw
+    breaksw
+  # Other
+  default:
+    set platform="unknown"
+endsw
+
+if ( $platform == "unknown" ) then
+  echo Error: your system \"$system $cpu\" is not supported yet.
+  echo Please report to the ConTeXt mailing-list (ntg-context@ntg.nl).
+endif
+
+#
+# PATH
+#
+
+# this resolves to path of the setuptex script
+# We use $0 for determine the path to the script, except for bash and (t)csh where $0
+# always is bash or (t)csh.
+
+# but one can also call
+# . setuptex path-to-tex-tree
+
+# first check if any path has been provided in the argument, and try to use that one
+if ( $# > 0 ) then
+	setenv TEXROOT $1
+else
+	# $_ should be `history -h 1` but doesn't seem to work...
+	set cmd=`history -h 1`
+	if ( $cmd[2]:h == $cmd[2]:t ) then
+		setenv TEXROOT $cwd
+	else
+		setenv TEXROOT $cmd[2]:h
+	endif
+	unset cmd
+endif
+cd $TEXROOT; setenv TEXROOT $cwd; cd -
+
+if ( -f "$TEXROOT/texmf/tex/plain/base/plain.tex" ) then
+	echo Setting \"$TEXROOT\" as TEXROOT.
+else
+	echo \"$TEXROOT\" is not a valid TEXROOT path.
+	echo There is no file \"$TEXROOT/texmf/tex/plain/base/plain.tex\".
+	echo Please provide a proper tex root (like \"source setuptex /path/tex\")
+	unsetenv TEXROOT
+	exit
+endif
+
+unsetenv TEXINPUTS MPINPUTS MFINPUTS
+
+# ConTeXt binaries have to be added to PATH
+setenv TEXMFOS $TEXROOT/texmf-$platform
+setenv PATH $TEXMFOS/bin:$PATH
+# TODO: we could set OSFONTDIR on Mac for example
+
+# setenv CTXMINIMAL yes
diff --git a/scripts/context/stubs/source/mtxrun_dll.c b/scripts/context/stubs/source/mtxrun_dll.c
index 356647ef0..fc2e260f5 100644
--- a/scripts/context/stubs/source/mtxrun_dll.c
+++ b/scripts/context/stubs/source/mtxrun_dll.c
@@ -75,7 +75,6 @@ __declspec(dllexport) int dllrunscript( int argc, char *argv[] )
   unsigned char is_jit=0;
 
   // directory of this module/executable
-
   HMODULE module_handle = GetModuleHandle( "mtxrun.dll" );
   // if ( module_handle == NULL ) exe path will be used, which is OK too
   k = (int) GetModuleFileName( module_handle, dirpath, MAX_PATH );
@@ -86,7 +85,6 @@ __declspec(dllexport) int dllrunscript( int argc, char *argv[] )
   *(++s) = '\0'; //remove file name, leave trailing backslash
 
   // program name
-
   k = strlen(argv[0]);
   while ( k && (argv[0][k-1] != '/') && (argv[0][k-1] != '\\') ) k--;
   strcpy(progname, &argv[0][k]);
@@ -100,7 +98,7 @@ __declspec(dllexport) int dllrunscript( int argc, char *argv[] )
   }
   else
        is_jit = 0;
-
+ 
   // script path
 
   strcpy( scriptpath, dirpath );
@@ -126,64 +124,105 @@ __declspec(dllexport) int dllrunscript( int argc, char *argv[] )
     DIE( "file not found: %s\n", scriptpath );
 
   // find luatex.exe /luajittex.exe
-
   if ( SearchPath(
-	   getenv( "PATH" ), // path to search (optional)
-	   (is_jit ? "luajittex.exe":"luatex.exe"),     // file name to search
-	   NULL,             // file extension to add (optional)
-	   MAX_PATH,         // output buffer size
-	   luatexpath,       // output buffer pointer
-	   &luatexfname )    // pointer to a file part in the output buffer (optional)
+		  dirpath, // was getenv( "PATH" ), // path to search (optional)
+		  (is_jit ? "luajittex.exe":"luatex.exe"),     // file name to search
+		  NULL,             // file extension to add (optional)
+		  MAX_PATH,         // output buffer size
+		  luatexpath,       // output buffer pointer
+		  &luatexfname )    // pointer to a file part in the output buffer (optional)
        ) {
     binary = (is_jit ? "luajittex.exe":"luatex.exe");
-  }else if ( SearchPath(
-	       dirpath,          // path to search (optional)
-	       (is_jit ? "luajittex.exe":"luatex.exe"),     // file name to search
-	       NULL,             // file extension to add (optional)
-	       MAX_PATH,         // output buffer size
-	       luatexpath,       // output buffer pointer
-	       &luatexfname )    // pointer to a file part in the output buffer (optional)
-	     ) {
-    binary = (is_jit ? "luajittex.exe":"luatex.exe");
-  }else if ( SearchPath(
-	   getenv( "PATH" ), // path to search (optional)
-	   (is_jit ? "texluajit.exe":"texlua.exe"),     // file name to search
-	   NULL,             // file extension to add (optional)
-	   MAX_PATH,         // output buffer size
-	   luatexpath,       // output buffer pointer
-	   &luatexfname )    // pointer to a file part in the output buffer (optional)
-       ) {
+  } else if ( SearchPath(
+			 dirpath, // was getenv( "PATH" ), // path to search (optional)
+			 (is_jit ? "texluajit.exe":"texlua.exe"),     // file name to search
+			 NULL,             // file extension to add (optional)
+			 MAX_PATH,         // output buffer size
+			 luatexpath,       // output buffer pointer
+			 &luatexfname )    // pointer to a file part in the output buffer (optional)
+	      ) {
     binary = (is_jit ? "texluajit.exe":"texlua.exe");
-  }else if ( SearchPath(
-	       dirpath,          // path to search (optional)
-	       (is_jit ? "luajittex.exe":"luatex.exe"),     // file name to search
-	       NULL,             // file extension to add (optional)
-	       MAX_PATH,         // output buffer size
-	       luatexpath,       // output buffer pointer
-	       &luatexfname )    // pointer to a file part in the output buffer (optional)
-	     ) {
+  } else if ( SearchPath(
+			 getenv("PATH"), // was dirpath,          // path to search (optional)
+			 (is_jit ? "luajittex.exe":"luatex.exe"),     // file name to search
+			 NULL,             // file extension to add (optional)
+			 MAX_PATH,         // output buffer size
+			 luatexpath,       // output buffer pointer
+			 &luatexfname )    // pointer to a file part in the output buffer (optional)
+	      ) {
+    binary = (is_jit ? "luajittex.exe":"luatex.exe");
+  } else if ( SearchPath(
+			 getenv("PATH") , // was dirpath,          // path to search (optional)
+			 (is_jit ? "texluajit.exe":"texlua.exe"),     // file name to search
+			 NULL,             // file extension to add (optional)
+			 MAX_PATH,         // output buffer size
+			 luatexpath,       // output buffer pointer
+			 &luatexfname )    // pointer to a file part in the output buffer (optional)
+	      ) {
     binary = (is_jit ? "texluajit.exe":"texlua.exe");
   }else {
     DIE( "unable to locate texlua.exe on the search path" );
   }
-  // link directly with luatex.dll if available in texlua's dir
 
+  /* if ( SearchPath( */
+  /* 	   dirpath, // was getenv( "PATH" ), // path to search (optional) */
+  /* 	   (is_jit ? "luajittex.exe":"luatex.exe"),     // file name to search */
+  /* 	   NULL,             // file extension to add (optional) */
+  /* 	   MAX_PATH,         // output buffer size */
+  /* 	   luatexpath,       // output buffer pointer */
+  /* 	   &luatexfname )    // pointer to a file part in the output buffer (optional) */
+  /*      ) { */
+  /*   binary = (is_jit ? "luajittex.exe":"luatex.exe"); */
+  /* }else if ( SearchPath( */
+  /* 	       getenv("PATH"), // was dirpath,          // path to search (optional) */
+  /* 	       (is_jit ? "luajittex.exe":"luatex.exe"),     // file name to search */
+  /* 	       NULL,             // file extension to add (optional) */
+  /* 	       MAX_PATH,         // output buffer size */
+  /* 	       luatexpath,       // output buffer pointer */
+  /* 	       &luatexfname )    // pointer to a file part in the output buffer (optional) */
+  /* 	     ) { */
+  /*   binary = (is_jit ? "luajittex.exe":"luatex.exe"); */
+  /* }else if ( SearchPath( */
+  /* 	   dirpath, // was getenv( "PATH" ), // path to search (optional) */
+  /* 	   (is_jit ? "texluajit.exe":"texlua.exe"),     // file name to search */
+  /* 	   NULL,             // file extension to add (optional) */
+  /* 	   MAX_PATH,         // output buffer size */
+  /* 	   luatexpath,       // output buffer pointer */
+  /* 	   &luatexfname )    // pointer to a file part in the output buffer (optional) */
+  /*      ) { */
+  /*   binary = (is_jit ? "texluajit.exe":"texlua.exe"); */
+  /* }else if ( SearchPath( */
+  /* 	       getenv("PATH") , // was dirpath,          // path to search (optional) */
+  /* 	       (is_jit ? "texluajit.exe":"texlua.exe"),     // file name to search */
+  /* 	       NULL,             // file extension to add (optional) */
+  /* 	       MAX_PATH,         // output buffer size */
+  /* 	       luatexpath,       // output buffer pointer */
+  /* 	       &luatexfname )    // pointer to a file part in the output buffer (optional) */
+  /* 	     ) { */
+  /*   binary = (is_jit ? "texluajit.exe":"texlua.exe"); */
+  /* }else { */
+  /*   DIE( "unable to locate texlua.exe on the search path" ); */
+  /* } */
+
+
+
+
+  // link directly with luatex.dll if available in texlua's dir
   strcpy( luatexfname, (is_jit ? "luajittex.dll":"luatex.dll") );
   if ( dllluatex = LoadLibrary(luatexpath) )
   {
-    mainlikeproc dllluatexmain = (mainlikeproc) GetProcAddress( dllluatex, "dllluatexmain" );
+    mainlikeproc dllluatexmain = (mainlikeproc) GetProcAddress( dllluatex, (is_jit ? "dllluajittexmain": "dllluatexmain" ));
     if ( dllluatexmain == NULL )
       if (is_jit)
        DIE( "unable to locate dllluatexmain procedure in luajittex.dll"  )
-     else
+     else 
        DIE( "unable to locate dllluatexmain procedure in luatex.dll"  );
 
-
     // set up argument list for texlua script
 
-    lua_argv = (char **)malloc( (argc + 4) * sizeof(char *) );
+    lua_argv = (char **)malloc( (argc + 5) * sizeof(char *) );
     if ( lua_argv == NULL ) DIE( "out of memory\n" );
-    lua_argv[lua_argc=0] =  binary;
+    lua_argv[lua_argc=0] =  luatexfname;
     lua_argv[++lua_argc] = "--luaonly";
     lua_argv[++lua_argc] = scriptpath; // script to execute
     if (passprogname) {
@@ -195,7 +234,7 @@ __declspec(dllexport) int dllrunscript( int argc, char *argv[] )
 
     // call texlua interpreter
     // dllluatexmain  never returns, but we pretend that it does
-
+    
     k = dllluatexmain( lua_argc, lua_argv );
     if (lua_argv) free( lua_argv );
     return k;
diff --git a/scripts/context/stubs/unix/ctxtools b/scripts/context/stubs/unix/ctxtools
deleted file mode 100755
index 2e6bd4afa..000000000
--- a/scripts/context/stubs/unix/ctxtools
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/bin/sh
-mtxrun --script ctxtools "$@"
diff --git a/scripts/context/stubs/unix/mptopdf b/scripts/context/stubs/unix/mptopdf
deleted file mode 100755
index 147333740..000000000
--- a/scripts/context/stubs/unix/mptopdf
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/bin/sh
-mtxrun --script mptopdf "$@"
diff --git a/scripts/context/stubs/unix/mtxrun b/scripts/context/stubs/unix/mtxrun
index ca5957f70..24f5e7744 100755
--- a/scripts/context/stubs/unix/mtxrun
+++ b/scripts/context/stubs/unix/mtxrun
@@ -16805,17 +16805,18 @@ local ownlibs = { -- order can be made better
 
 }
 
+-- c:/data/develop/tex-context/tex/texmf-win64/bin/../../texmf-context/tex/context/base/data-tmf.lua
+-- c:/data/develop/context/sources/data-tmf.lua
+
 local ownlist = {
-    '.',
-    ownpath ,
-    ownpath .. "/../sources", -- HH's development path
+ -- '.',
+ -- ownpath ,
+    owntree .. "/../../../../context/sources", -- HH's development path
     owntree .. "/../../texmf-local/tex/context/base",
     owntree .. "/../../texmf-context/tex/context/base",
-    owntree .. "/../../texmf-dist/tex/context/base",
     owntree .. "/../../texmf/tex/context/base",
     owntree .. "/../../../texmf-local/tex/context/base",
     owntree .. "/../../../texmf-context/tex/context/base",
-    owntree .. "/../../../texmf-dist/tex/context/base",
     owntree .. "/../../../texmf/tex/context/base",
 }
 
@@ -17745,8 +17746,16 @@ elseif e_argument("selfmerge") then
 
     runners.loadbase()
     local found = locate_libs()
+
     if found then
-        utilities.merger.selfmerge(own.name,own.libs,{ found })
+        local mtxrun = resolvers.findfile("mtxrun.lua") -- includes local name
+        if lfs.isfile(mtxrun) then
+            utilities.merger.selfmerge(mtxrun,own.libs,{ found })
+            application.report("runner updated on resolved path: %s",mtxrun)
+        else
+            utilities.merger.selfmerge(own.name,own.libs,{ found })
+            application.report("runner updated on relative path: %s",own.name)
+        end
     end
 
 elseif e_argument("selfclean") then
@@ -17754,7 +17763,15 @@ elseif e_argument("selfclean") then
     -- remove embedded libraries
 
     runners.loadbase()
-    utilities.merger.selfclean(own.name)
+
+    local mtxrun = resolvers.findfile("mtxrun.lua") -- includes local name
+    if lfs.isfile(mtxrun) then
+        utilities.merger.selfclean(mtxrun)
+        application.report("runner cleaned on resolved path: %s",mtxrun)
+    else
+        utilities.merger.selfclean(own.name)
+        application.report("runner cleaned on relative path: %s",own.name)
+    end
 
 elseif e_argument("selfupdate") then
 
@@ -17996,6 +18013,8 @@ elseif e_argument("version") then
 
     application.version()
 
+    application.report("source path",environment.ownbin)
+
 elseif e_argument("directives") then
 
     directives.show()
diff --git a/scripts/context/stubs/unix/pstopdf b/scripts/context/stubs/unix/pstopdf
deleted file mode 100755
index 116f5f4a3..000000000
--- a/scripts/context/stubs/unix/pstopdf
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/bin/sh
-mtxrun --script pstopdf "$@"
diff --git a/scripts/context/stubs/win64/context.exe b/scripts/context/stubs/win64/context.exe
new file mode 100755
index 000000000..93290a6e0
--- /dev/null
+++ b/scripts/context/stubs/win64/context.exe
diff --git a/scripts/context/stubs/win64/ctxtools.exe b/scripts/context/stubs/win64/ctxtools.exe
new file mode 100755
index 000000000..93290a6e0
--- /dev/null
+++ b/scripts/context/stubs/win64/ctxtools.exe
diff --git a/scripts/context/stubs/win64/luatools.exe b/scripts/context/stubs/win64/luatools.exe
new file mode 100755
index 000000000..93290a6e0
--- /dev/null
+++ b/scripts/context/stubs/win64/luatools.exe
diff --git a/scripts/context/stubs/win64/metatex.exe b/scripts/context/stubs/win64/metatex.exe
new file mode 100755
index 000000000..93290a6e0
--- /dev/null
+++ b/scripts/context/stubs/win64/metatex.exe
diff --git a/scripts/context/stubs/win64/mptopdf.exe b/scripts/context/stubs/win64/mptopdf.exe
new file mode 100755
index 000000000..93290a6e0
--- /dev/null
+++ b/scripts/context/stubs/win64/mptopdf.exe
diff --git a/scripts/context/stubs/win64/mtxrun.dll b/scripts/context/stubs/win64/mtxrun.dll
new file mode 100644
index 000000000..910502735
--- /dev/null
+++ b/scripts/context/stubs/win64/mtxrun.dll
diff --git a/scripts/context/stubs/win64/mtxrun.exe b/scripts/context/stubs/win64/mtxrun.exe
new file mode 100755
index 000000000..93290a6e0
--- /dev/null
+++ b/scripts/context/stubs/win64/mtxrun.exe
diff --git a/scripts/context/stubs/win64/mtxrun.lua b/scripts/context/stubs/win64/mtxrun.lua
new file mode 100644
index 000000000..24f5e7744
--- /dev/null
+++ b/scripts/context/stubs/win64/mtxrun.lua
@@ -0,0 +1,18083 @@
+#!/usr/bin/env texlua
+
+-- for k, v in next, _G.string do
+--     local tv = type(v)
+--     if tv == "table" then
+--         for kk, vv in next, v do
+--             print(k,kk,vv)
+--         end
+--     else
+--         print(tv,k,v)
+--     end
+-- end
+
+if not modules then modules = { } end modules ['mtxrun'] = {
+    version   = 1.001,
+    comment   = "runner, lua replacement for texmfstart.rb",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+-- one can make a stub:
+--
+-- #!/bin/sh
+-- env LUATEXDIR=/....../texmf/scripts/context/lua luatex --luaonly mtxrun.lua "$@"
+
+-- filename : mtxrun.lua
+-- comment  : companion to context.tex
+-- author   : Hans Hagen, PRAGMA-ADE, Hasselt NL
+-- copyright: PRAGMA ADE / ConTeXt Development Team
+-- license  : see context related readme files
+
+-- This script is based on texmfstart.rb but does not use kpsewhich to
+-- locate files. Although kpse is a library it never came to opening up
+-- its interface to other programs (esp scripting languages) and so we
+-- do it ourselves. The lua variant evolved out of an experimental ruby
+-- one. Interesting is that using a scripting language instead of c does
+-- not have a speed penalty. Actually the lua variant is more efficient,
+-- especially when multiple calls to kpsewhich are involved. The lua
+-- library also gives way more control.
+
+-- to be done / considered
+--
+-- support for --exec or make it default
+-- support for jar files (or maybe not, never used, too messy)
+-- support for $RUBYINPUTS cum suis (if still needed)
+-- remember for subruns: _CTX_K_V_#{original}_
+-- remember for subruns: _CTX_K_S_#{original}_
+-- remember for subruns: TEXMFSTART.#{original} [tex.rb texmfstart.rb]
+
+-- begin library merge
+
+
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-lua"] = package.loaded["l-lua"] or true
+
+-- original size: 3123, stripped down to: 1694
+
+if not modules then modules={} end modules ['l-lua']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local major,minor=string.match(_VERSION,"^[^%d]+(%d+)%.(%d+).*$")
+_MAJORVERSION=tonumber(major) or 5
+_MINORVERSION=tonumber(minor) or 1
+_LUAVERSION=_MAJORVERSION+_MINORVERSION/10
+if not lpeg then
+  lpeg=require("lpeg")
+end
+if loadstring then
+  local loadnormal=load
+  function load(first,...)
+    if type(first)=="string" then
+      return loadstring(first,...)
+    else
+      return loadnormal(first,...)
+    end
+  end
+else
+  loadstring=load
+end
+if not ipairs then
+  local function iterate(a,i)
+    i=i+1
+    local v=a[i]
+    if v~=nil then
+      return i,v 
+    end
+  end
+  function ipairs(a)
+    return iterate,a,0
+  end
+end
+if not pairs then
+  function pairs(t)
+    return next,t 
+  end
+end
+if not table.unpack then
+  table.unpack=_G.unpack
+elseif not unpack then
+  _G.unpack=table.unpack
+end
+if not package.loaders then 
+  package.loaders=package.searchers
+end
+local print,select,tostring=print,select,tostring
+local inspectors={}
+function setinspector(inspector) 
+  inspectors[#inspectors+1]=inspector
+end
+function inspect(...) 
+  for s=1,select("#",...) do
+    local value=select(s,...)
+    local done=false
+    for i=1,#inspectors do
+      done=inspectors[i](value)
+      if done then
+        break
+      end
+    end
+    if not done then
+      print(tostring(value))
+    end
+  end
+end
+local dummy=function() end
+function optionalrequire(...)
+  local ok,result=xpcall(require,dummy,...)
+  if ok then
+    return result
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-package"] = package.loaded["l-package"] or true
+
+-- original size: 10587, stripped down to: 7815
+
+if not modules then modules={} end modules ['l-package']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local type=type
+local gsub,format,find=string.gsub,string.format,string.find
+local P,S,Cs,lpegmatch=lpeg.P,lpeg.S,lpeg.Cs,lpeg.match
+local package=package
+local searchers=package.searchers or package.loaders
+local filejoin=file and file.join    or function(path,name)  return path.."/"..name end
+local isreadable=file and file.is_readable or function(name)    local f=io.open(name) if f then f:close() return true end end
+local addsuffix=file and file.addsuffix  or function(name,suffix) return name.."."..suffix end
+local function cleanpath(path) 
+  return path
+end
+local pattern=Cs((((1-S("\\/"))^0*(S("\\/")^1/"/"))^0*(P(".")^1/"/"+P(1))^1)*-1)
+local function lualibfile(name)
+  return lpegmatch(pattern,name) or name
+end
+local offset=luarocks and 1 or 0 
+local helpers=package.helpers or {
+  cleanpath=cleanpath,
+  lualibfile=lualibfile,
+  trace=false,
+  report=function(...) print(format(...)) end,
+  builtin={
+    ["preload table"]=searchers[1+offset],
+    ["path specification"]=searchers[2+offset],
+    ["cpath specification"]=searchers[3+offset],
+    ["all in one fallback"]=searchers[4+offset],
+  },
+  methods={},
+  sequence={
+    "already loaded",
+    "preload table",
+    "qualified path",
+    "lua extra list",
+    "lib extra list",
+    "path specification",
+    "cpath specification",
+    "all in one fallback",
+    "not loaded",
+  }
+}
+package.helpers=helpers
+local methods=helpers.methods
+local builtin=helpers.builtin
+local extraluapaths={}
+local extralibpaths={}
+local luapaths=nil 
+local libpaths=nil 
+local oldluapath=nil
+local oldlibpath=nil
+local nofextralua=-1
+local nofextralib=-1
+local nofpathlua=-1
+local nofpathlib=-1
+local function listpaths(what,paths)
+  local nofpaths=#paths
+  if nofpaths>0 then
+    for i=1,nofpaths do
+      helpers.report("using %s path %i: %s",what,i,paths[i])
+    end
+  else
+    helpers.report("no %s paths defined",what)
+  end
+  return nofpaths
+end
+local function getextraluapaths()
+  if helpers.trace and #extraluapaths~=nofextralua then
+    nofextralua=listpaths("extra lua",extraluapaths)
+  end
+  return extraluapaths
+end
+local function getextralibpaths()
+  if helpers.trace and #extralibpaths~=nofextralib then
+    nofextralib=listpaths("extra lib",extralibpaths)
+  end
+  return extralibpaths
+end
+local function getluapaths()
+  local luapath=package.path or ""
+  if oldluapath~=luapath then
+    luapaths=file.splitpath(luapath,";")
+    oldluapath=luapath
+    nofpathlua=-1
+  end
+  if helpers.trace and #luapaths~=nofpathlua then
+    nofpathlua=listpaths("builtin lua",luapaths)
+  end
+  return luapaths
+end
+local function getlibpaths()
+  local libpath=package.cpath or ""
+  if oldlibpath~=libpath then
+    libpaths=file.splitpath(libpath,";")
+    oldlibpath=libpath
+    nofpathlib=-1
+  end
+  if helpers.trace and #libpaths~=nofpathlib then
+    nofpathlib=listpaths("builtin lib",libpaths)
+  end
+  return libpaths
+end
+package.luapaths=getluapaths
+package.libpaths=getlibpaths
+package.extraluapaths=getextraluapaths
+package.extralibpaths=getextralibpaths
+local hashes={
+  lua={},
+  lib={},
+}
+local function registerpath(tag,what,target,...)
+  local pathlist={... }
+  local cleanpath=helpers.cleanpath
+  local trace=helpers.trace
+  local report=helpers.report
+  local hash=hashes[what]
+  local function add(path)
+    local path=cleanpath(path)
+    if not hash[path] then
+      target[#target+1]=path
+      hash[path]=true
+      if trace then
+        report("registered %s path %s: %s",tag,#target,path)
+      end
+    else
+      if trace then
+        report("duplicate %s path: %s",tag,path)
+      end
+    end
+  end
+  for p=1,#pathlist do
+    local path=pathlist[p]
+    if type(path)=="table" then
+      for i=1,#path do
+        add(path[i])
+      end
+    else
+      add(path)
+    end
+  end
+  return paths
+end
+helpers.registerpath=registerpath
+function package.extraluapath(...)
+  registerpath("extra lua","lua",extraluapaths,...)
+end
+function package.extralibpath(...)
+  registerpath("extra lib","lib",extralibpaths,...)
+end
+local function loadedaslib(resolved,rawname) 
+  local base=gsub(rawname,"%.","_")
+  local init="luaopen_"..gsub(base,"%.","_")
+  if helpers.trace then
+    helpers.report("calling loadlib with '%s' with init '%s'",resolved,init)
+  end
+  return package.loadlib(resolved,init)
+end
+helpers.loadedaslib=loadedaslib
+local function loadedbypath(name,rawname,paths,islib,what)
+  local trace=helpers.trace
+  for p=1,#paths do
+    local path=paths[p]
+    local resolved=filejoin(path,name)
+    if trace then
+      helpers.report("%s path, identifying '%s' on '%s'",what,name,path)
+    end
+    if isreadable(resolved) then
+      if trace then
+        helpers.report("%s path, '%s' found on '%s'",what,name,resolved)
+      end
+      if islib then
+        return loadedaslib(resolved,rawname)
+      else
+        return loadfile(resolved)
+      end
+    end
+  end
+end
+helpers.loadedbypath=loadedbypath
+local function loadedbyname(name,rawname)
+  if find(name,"^/") or find(name,"^[a-zA-Z]:/") then
+    local trace=helpers.trace
+    if trace then
+      helpers.report("qualified name, identifying '%s'",what,name)
+    end
+    if isreadable(name) then
+      if trace then
+        helpers.report("qualified name, '%s' found",what,name)
+      end
+      return loadfile(name)
+    end
+  end
+end
+helpers.loadedbyname=loadedbyname
+methods["already loaded"]=function(name)
+  return package.loaded[name]
+end
+methods["preload table"]=function(name)
+  return builtin["preload table"](name)
+end
+methods["qualified path"]=function(name)
+ return loadedbyname(addsuffix(lualibfile(name),"lua"),name)
+end
+methods["lua extra list"]=function(name)
+  return loadedbypath(addsuffix(lualibfile(name),"lua"),name,getextraluapaths(),false,"lua")
+end
+methods["lib extra list"]=function(name)
+  return loadedbypath(addsuffix(lualibfile(name),os.libsuffix),name,getextralibpaths(),true,"lib")
+end
+methods["path specification"]=function(name)
+  getluapaths() 
+  return builtin["path specification"](name)
+end
+methods["cpath specification"]=function(name)
+  getlibpaths() 
+  return builtin["cpath specification"](name)
+end
+methods["all in one fallback"]=function(name)
+  return builtin["all in one fallback"](name)
+end
+methods["not loaded"]=function(name)
+  if helpers.trace then
+    helpers.report("unable to locate '%s'",name or "?")
+  end
+  return nil
+end
+local level=0
+local used={}
+helpers.traceused=false
+function helpers.loaded(name)
+  local sequence=helpers.sequence
+  level=level+1
+  for i=1,#sequence do
+    local method=sequence[i]
+    if helpers.trace then
+      helpers.report("%s, level '%s', method '%s', name '%s'","locating",level,method,name)
+    end
+    local result,rest=methods[method](name)
+    if type(result)=="function" then
+      if helpers.trace then
+        helpers.report("%s, level '%s', method '%s', name '%s'","found",level,method,name)
+      end
+      if helpers.traceused then
+        used[#used+1]={ level=level,name=name }
+      end
+      level=level-1
+      return result,rest
+    end
+  end
+  level=level-1
+  return nil
+end
+function helpers.showused()
+  local n=#used
+  if n>0 then
+    helpers.report("%s libraries loaded:",n)
+    helpers.report()
+    for i=1,n do
+      local u=used[i]
+      helpers.report("%i %a",u.level,u.name)
+    end
+    helpers.report()
+   end
+end
+function helpers.unload(name)
+  if helpers.trace then
+    if package.loaded[name] then
+      helpers.report("unloading, name '%s', %s",name,"done")
+    else
+      helpers.report("unloading, name '%s', %s",name,"not loaded")
+    end
+  end
+  package.loaded[name]=nil
+end
+table.insert(searchers,1,helpers.loaded)
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-lpeg"] = package.loaded["l-lpeg"] or true
+
+-- original size: 29434, stripped down to: 16076
+
+if not modules then modules={} end modules ['l-lpeg']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+lpeg=require("lpeg")
+if not lpeg.print then function lpeg.print(...) print(lpeg.pcode(...)) end end
+local type,next,tostring=type,next,tostring
+local byte,char,gmatch,format=string.byte,string.char,string.gmatch,string.format
+local floor=math.floor
+local P,R,S,V,Ct,C,Cs,Cc,Cp,Cmt=lpeg.P,lpeg.R,lpeg.S,lpeg.V,lpeg.Ct,lpeg.C,lpeg.Cs,lpeg.Cc,lpeg.Cp,lpeg.Cmt
+local lpegtype,lpegmatch,lpegprint=lpeg.type,lpeg.match,lpeg.print
+if setinspector then
+  setinspector(function(v) if lpegtype(v) then lpegprint(v) return true end end)
+end
+lpeg.patterns=lpeg.patterns or {} 
+local patterns=lpeg.patterns
+local anything=P(1)
+local endofstring=P(-1)
+local alwaysmatched=P(true)
+patterns.anything=anything
+patterns.endofstring=endofstring
+patterns.beginofstring=alwaysmatched
+patterns.alwaysmatched=alwaysmatched
+local sign=S('+-')
+local zero=P('0')
+local digit=R('09')
+local octdigit=R("07")
+local lowercase=R("az")
+local uppercase=R("AZ")
+local underscore=P("_")
+local hexdigit=digit+lowercase+uppercase
+local cr,lf,crlf=P("\r"),P("\n"),P("\r\n")
+local newline=crlf+S("\r\n") 
+local escaped=P("\\")*anything
+local squote=P("'")
+local dquote=P('"')
+local space=P(" ")
+local period=P(".")
+local comma=P(",")
+local utfbom_32_be=P('\000\000\254\255') 
+local utfbom_32_le=P('\255\254\000\000') 
+local utfbom_16_be=P('\254\255')     
+local utfbom_16_le=P('\255\254')     
+local utfbom_8=P('\239\187\191')   
+local utfbom=utfbom_32_be+utfbom_32_le+utfbom_16_be+utfbom_16_le+utfbom_8
+local utftype=utfbom_32_be*Cc("utf-32-be")+utfbom_32_le*Cc("utf-32-le")+utfbom_16_be*Cc("utf-16-be")+utfbom_16_le*Cc("utf-16-le")+utfbom_8*Cc("utf-8")+alwaysmatched*Cc("utf-8") 
+local utfstricttype=utfbom_32_be*Cc("utf-32-be")+utfbom_32_le*Cc("utf-32-le")+utfbom_16_be*Cc("utf-16-be")+utfbom_16_le*Cc("utf-16-le")+utfbom_8*Cc("utf-8")
+local utfoffset=utfbom_32_be*Cc(4)+utfbom_32_le*Cc(4)+utfbom_16_be*Cc(2)+utfbom_16_le*Cc(2)+utfbom_8*Cc(3)+Cc(0)
+local utf8next=R("\128\191")
+patterns.utfbom_32_be=utfbom_32_be
+patterns.utfbom_32_le=utfbom_32_le
+patterns.utfbom_16_be=utfbom_16_be
+patterns.utfbom_16_le=utfbom_16_le
+patterns.utfbom_8=utfbom_8
+patterns.utf_16_be_nl=P("\000\r\000\n")+P("\000\r")+P("\000\n")
+patterns.utf_16_le_nl=P("\r\000\n\000")+P("\r\000")+P("\n\000")
+patterns.utf8one=R("\000\127")
+patterns.utf8two=R("\194\223")*utf8next
+patterns.utf8three=R("\224\239")*utf8next*utf8next
+patterns.utf8four=R("\240\244")*utf8next*utf8next*utf8next
+patterns.utfbom=utfbom
+patterns.utftype=utftype
+patterns.utfstricttype=utfstricttype
+patterns.utfoffset=utfoffset
+local utf8char=patterns.utf8one+patterns.utf8two+patterns.utf8three+patterns.utf8four
+local validutf8char=utf8char^0*endofstring*Cc(true)+Cc(false)
+local utf8character=P(1)*R("\128\191")^0 
+patterns.utf8=utf8char
+patterns.utf8char=utf8char
+patterns.utf8character=utf8character 
+patterns.validutf8=validutf8char
+patterns.validutf8char=validutf8char
+local eol=S("\n\r")
+local spacer=S(" \t\f\v") 
+local whitespace=eol+spacer
+local nonspacer=1-spacer
+local nonwhitespace=1-whitespace
+patterns.eol=eol
+patterns.spacer=spacer
+patterns.whitespace=whitespace
+patterns.nonspacer=nonspacer
+patterns.nonwhitespace=nonwhitespace
+local stripper=spacer^0*C((spacer^0*nonspacer^1)^0)
+local collapser=Cs(spacer^0/""*nonspacer^0*((spacer^0/" "*nonspacer^1)^0))
+patterns.stripper=stripper
+patterns.collapser=collapser
+patterns.lowercase=lowercase
+patterns.uppercase=uppercase
+patterns.letter=patterns.lowercase+patterns.uppercase
+patterns.space=space
+patterns.tab=P("\t")
+patterns.spaceortab=patterns.space+patterns.tab
+patterns.newline=newline
+patterns.emptyline=newline^1
+patterns.equal=P("=")
+patterns.comma=comma
+patterns.commaspacer=comma*spacer^0
+patterns.period=period
+patterns.colon=P(":")
+patterns.semicolon=P(";")
+patterns.underscore=underscore
+patterns.escaped=escaped
+patterns.squote=squote
+patterns.dquote=dquote
+patterns.nosquote=(escaped+(1-squote))^0
+patterns.nodquote=(escaped+(1-dquote))^0
+patterns.unsingle=(squote/"")*patterns.nosquote*(squote/"") 
+patterns.undouble=(dquote/"")*patterns.nodquote*(dquote/"") 
+patterns.unquoted=patterns.undouble+patterns.unsingle 
+patterns.unspacer=((patterns.spacer^1)/"")^0
+patterns.singlequoted=squote*patterns.nosquote*squote
+patterns.doublequoted=dquote*patterns.nodquote*dquote
+patterns.quoted=patterns.doublequoted+patterns.singlequoted
+patterns.digit=digit
+patterns.octdigit=octdigit
+patterns.hexdigit=hexdigit
+patterns.sign=sign
+patterns.cardinal=digit^1
+patterns.integer=sign^-1*digit^1
+patterns.unsigned=digit^0*period*digit^1
+patterns.float=sign^-1*patterns.unsigned
+patterns.cunsigned=digit^0*comma*digit^1
+patterns.cfloat=sign^-1*patterns.cunsigned
+patterns.number=patterns.float+patterns.integer
+patterns.cnumber=patterns.cfloat+patterns.integer
+patterns.oct=zero*octdigit^1
+patterns.octal=patterns.oct
+patterns.HEX=zero*P("X")*(digit+uppercase)^1
+patterns.hex=zero*P("x")*(digit+lowercase)^1
+patterns.hexadecimal=zero*S("xX")*hexdigit^1
+patterns.hexafloat=sign^-1*zero*S("xX")*(hexdigit^0*period*hexdigit^1+hexdigit^1*period*hexdigit^0+hexdigit^1)*(S("pP")*sign^-1*hexdigit^1)^-1
+patterns.decafloat=sign^-1*(digit^0*period*digit^1+digit^1*period*digit^0+digit^1)*S("eE")*sign^-1*digit^1
+patterns.propername=(uppercase+lowercase+underscore)*(uppercase+lowercase+underscore+digit)^0*endofstring
+patterns.somecontent=(anything-newline-space)^1 
+patterns.beginline=#(1-newline)
+patterns.longtostring=Cs(whitespace^0/""*((patterns.quoted+nonwhitespace^1+whitespace^1/""*(P(-1)+Cc(" ")))^0))
+local function anywhere(pattern) 
+  return P { P(pattern)+1*V(1) }
+end
+lpeg.anywhere=anywhere
+function lpeg.instringchecker(p)
+  p=anywhere(p)
+  return function(str)
+    return lpegmatch(p,str) and true or false
+  end
+end
+function lpeg.splitter(pattern,action)
+  return (((1-P(pattern))^1)/action+1)^0
+end
+function lpeg.tsplitter(pattern,action)
+  return Ct((((1-P(pattern))^1)/action+1)^0)
+end
+local splitters_s,splitters_m,splitters_t={},{},{}
+local function splitat(separator,single)
+  local splitter=(single and splitters_s[separator]) or splitters_m[separator]
+  if not splitter then
+    separator=P(separator)
+    local other=C((1-separator)^0)
+    if single then
+      local any=anything
+      splitter=other*(separator*C(any^0)+"") 
+      splitters_s[separator]=splitter
+    else
+      splitter=other*(separator*other)^0
+      splitters_m[separator]=splitter
+    end
+  end
+  return splitter
+end
+local function tsplitat(separator)
+  local splitter=splitters_t[separator]
+  if not splitter then
+    splitter=Ct(splitat(separator))
+    splitters_t[separator]=splitter
+  end
+  return splitter
+end
+lpeg.splitat=splitat
+lpeg.tsplitat=tsplitat
+function string.splitup(str,separator)
+  if not separator then
+    separator=","
+  end
+  return lpegmatch(splitters_m[separator] or splitat(separator),str)
+end
+local cache={}
+function lpeg.split(separator,str)
+  local c=cache[separator]
+  if not c then
+    c=tsplitat(separator)
+    cache[separator]=c
+  end
+  return lpegmatch(c,str)
+end
+function string.split(str,separator)
+  if separator then
+    local c=cache[separator]
+    if not c then
+      c=tsplitat(separator)
+      cache[separator]=c
+    end
+    return lpegmatch(c,str)
+  else
+    return { str }
+  end
+end
+local spacing=patterns.spacer^0*newline 
+local empty=spacing*Cc("")
+local nonempty=Cs((1-spacing)^1)*spacing^-1
+local content=(empty+nonempty)^1
+patterns.textline=content
+local linesplitter=tsplitat(newline)
+patterns.linesplitter=linesplitter
+function string.splitlines(str)
+  return lpegmatch(linesplitter,str)
+end
+local cache={}
+function lpeg.checkedsplit(separator,str)
+  local c=cache[separator]
+  if not c then
+    separator=P(separator)
+    local other=C((1-separator)^1)
+    c=Ct(separator^0*other*(separator^1*other)^0)
+    cache[separator]=c
+  end
+  return lpegmatch(c,str)
+end
+function string.checkedsplit(str,separator)
+  local c=cache[separator]
+  if not c then
+    separator=P(separator)
+    local other=C((1-separator)^1)
+    c=Ct(separator^0*other*(separator^1*other)^0)
+    cache[separator]=c
+  end
+  return lpegmatch(c,str)
+end
+local function f2(s) local c1,c2=byte(s,1,2) return  c1*64+c2-12416 end
+local function f3(s) local c1,c2,c3=byte(s,1,3) return (c1*64+c2)*64+c3-925824 end
+local function f4(s) local c1,c2,c3,c4=byte(s,1,4) return ((c1*64+c2)*64+c3)*64+c4-63447168 end
+local utf8byte=patterns.utf8one/byte+patterns.utf8two/f2+patterns.utf8three/f3+patterns.utf8four/f4
+patterns.utf8byte=utf8byte
+local cache={}
+function lpeg.stripper(str)
+  if type(str)=="string" then
+    local s=cache[str]
+    if not s then
+      s=Cs(((S(str)^1)/""+1)^0)
+      cache[str]=s
+    end
+    return s
+  else
+    return Cs(((str^1)/""+1)^0)
+  end
+end
+local cache={}
+function lpeg.keeper(str)
+  if type(str)=="string" then
+    local s=cache[str]
+    if not s then
+      s=Cs((((1-S(str))^1)/""+1)^0)
+      cache[str]=s
+    end
+    return s
+  else
+    return Cs((((1-str)^1)/""+1)^0)
+  end
+end
+function lpeg.frontstripper(str) 
+  return (P(str)+P(true))*Cs(anything^0)
+end
+function lpeg.endstripper(str) 
+  return Cs((1-P(str)*endofstring)^0)
+end
+function lpeg.replacer(one,two,makefunction,isutf) 
+  local pattern
+  local u=isutf and utf8char or 1
+  if type(one)=="table" then
+    local no=#one
+    local p=P(false)
+    if no==0 then
+      for k,v in next,one do
+        p=p+P(k)/v
+      end
+      pattern=Cs((p+u)^0)
+    elseif no==1 then
+      local o=one[1]
+      one,two=P(o[1]),o[2]
+      pattern=Cs((one/two+u)^0)
+    else
+      for i=1,no do
+        local o=one[i]
+        p=p+P(o[1])/o[2]
+      end
+      pattern=Cs((p+u)^0)
+    end
+  else
+    pattern=Cs((P(one)/(two or "")+u)^0)
+  end
+  if makefunction then
+    return function(str)
+      return lpegmatch(pattern,str)
+    end
+  else
+    return pattern
+  end
+end
+function lpeg.finder(lst,makefunction,isutf) 
+  local pattern
+  if type(lst)=="table" then
+    pattern=P(false)
+    if #lst==0 then
+      for k,v in next,lst do
+        pattern=pattern+P(k) 
+      end
+    else
+      for i=1,#lst do
+        pattern=pattern+P(lst[i])
+      end
+    end
+  else
+    pattern=P(lst)
+  end
+  if isutf then
+    pattern=((utf8char or 1)-pattern)^0*pattern
+  else
+    pattern=(1-pattern)^0*pattern
+  end
+  if makefunction then
+    return function(str)
+      return lpegmatch(pattern,str)
+    end
+  else
+    return pattern
+  end
+end
+local splitters_f,splitters_s={},{}
+function lpeg.firstofsplit(separator) 
+  local splitter=splitters_f[separator]
+  if not splitter then
+    local pattern=P(separator)
+    splitter=C((1-pattern)^0)
+    splitters_f[separator]=splitter
+  end
+  return splitter
+end
+function lpeg.secondofsplit(separator) 
+  local splitter=splitters_s[separator]
+  if not splitter then
+    local pattern=P(separator)
+    splitter=(1-pattern)^0*pattern*C(anything^0)
+    splitters_s[separator]=splitter
+  end
+  return splitter
+end
+local splitters_s,splitters_p={},{}
+function lpeg.beforesuffix(separator) 
+  local splitter=splitters_s[separator]
+  if not splitter then
+    local pattern=P(separator)
+    splitter=C((1-pattern)^0)*pattern*endofstring
+    splitters_s[separator]=splitter
+  end
+  return splitter
+end
+function lpeg.afterprefix(separator) 
+  local splitter=splitters_p[separator]
+  if not splitter then
+    local pattern=P(separator)
+    splitter=pattern*C(anything^0)
+    splitters_p[separator]=splitter
+  end
+  return splitter
+end
+function lpeg.balancer(left,right)
+  left,right=P(left),P(right)
+  return P { left*((1-left-right)+V(1))^0*right }
+end
+local nany=utf8char/""
+function lpeg.counter(pattern)
+  pattern=Cs((P(pattern)/" "+nany)^0)
+  return function(str)
+    return #lpegmatch(pattern,str)
+  end
+end
+utf=utf or (unicode and unicode.utf8) or {}
+local utfcharacters=utf and utf.characters or string.utfcharacters
+local utfgmatch=utf and utf.gmatch
+local utfchar=utf and utf.char
+lpeg.UP=lpeg.P
+if utfcharacters then
+  function lpeg.US(str)
+    local p=P(false)
+    for uc in utfcharacters(str) do
+      p=p+P(uc)
+    end
+    return p
+  end
+elseif utfgmatch then
+  function lpeg.US(str)
+    local p=P(false)
+    for uc in utfgmatch(str,".") do
+      p=p+P(uc)
+    end
+    return p
+  end
+else
+  function lpeg.US(str)
+    local p=P(false)
+    local f=function(uc)
+      p=p+P(uc)
+    end
+    lpegmatch((utf8char/f)^0,str)
+    return p
+  end
+end
+local range=utf8byte*utf8byte+Cc(false) 
+function lpeg.UR(str,more)
+  local first,last
+  if type(str)=="number" then
+    first=str
+    last=more or first
+  else
+    first,last=lpegmatch(range,str)
+    if not last then
+      return P(str)
+    end
+  end
+  if first==last then
+    return P(str)
+  elseif utfchar and (last-first<8) then 
+    local p=P(false)
+    for i=first,last do
+      p=p+P(utfchar(i))
+    end
+    return p 
+  else
+    local f=function(b)
+      return b>=first and b<=last
+    end
+    return utf8byte/f 
+  end
+end
+function lpeg.is_lpeg(p)
+  return p and lpegtype(p)=="pattern"
+end
+function lpeg.oneof(list,...) 
+  if type(list)~="table" then
+    list={ list,... }
+  end
+  local p=P(list[1])
+  for l=2,#list do
+    p=p+P(list[l])
+  end
+  return p
+end
+local sort=table.sort
+local function copyindexed(old)
+  local new={}
+  for i=1,#old do
+    new[i]=old
+  end
+  return new
+end
+local function sortedkeys(tab)
+  local keys,s={},0
+  for key,_ in next,tab do
+    s=s+1
+    keys[s]=key
+  end
+  sort(keys)
+  return keys
+end
+function lpeg.append(list,pp,delayed,checked)
+  local p=pp
+  if #list>0 then
+    local keys=copyindexed(list)
+    sort(keys)
+    for i=#keys,1,-1 do
+      local k=keys[i]
+      if p then
+        p=P(k)+p
+      else
+        p=P(k)
+      end
+    end
+  elseif delayed then 
+    local keys=sortedkeys(list)
+    if p then
+      for i=1,#keys,1 do
+        local k=keys[i]
+        local v=list[k]
+        p=P(k)/list+p
+      end
+    else
+      for i=1,#keys do
+        local k=keys[i]
+        local v=list[k]
+        if p then
+          p=P(k)+p
+        else
+          p=P(k)
+        end
+      end
+      if p then
+        p=p/list
+      end
+    end
+  elseif checked then
+    local keys=sortedkeys(list)
+    for i=1,#keys do
+      local k=keys[i]
+      local v=list[k]
+      if p then
+        if k==v then
+          p=P(k)+p
+        else
+          p=P(k)/v+p
+        end
+      else
+        if k==v then
+          p=P(k)
+        else
+          p=P(k)/v
+        end
+      end
+    end
+  else
+    local keys=sortedkeys(list)
+    for i=1,#keys do
+      local k=keys[i]
+      local v=list[k]
+      if p then
+        p=P(k)/v+p
+      else
+        p=P(k)/v
+      end
+    end
+  end
+  return p
+end
+local function make(t)
+  local p
+  local keys=sortedkeys(t)
+  for i=1,#keys do
+    local k=keys[i]
+    local v=t[k]
+    if not p then
+      if next(v) then
+        p=P(k)*make(v)
+      else
+        p=P(k)
+      end
+    else
+      if next(v) then
+        p=p+P(k)*make(v)
+      else
+        p=p+P(k)
+      end
+    end
+  end
+  return p
+end
+function lpeg.utfchartabletopattern(list) 
+  local tree={}
+  for i=1,#list do
+    local t=tree
+    for c in gmatch(list[i],".") do
+      if not t[c] then
+        t[c]={}
+      end
+      t=t[c]
+    end
+  end
+  return make(tree)
+end
+patterns.containseol=lpeg.finder(eol)
+local function nextstep(n,step,result)
+  local m=n%step   
+  local d=floor(n/step) 
+  if d>0 then
+    local v=V(tostring(step))
+    local s=result.start
+    for i=1,d do
+      if s then
+        s=v*s
+      else
+        s=v
+      end
+    end
+    result.start=s
+  end
+  if step>1 and result.start then
+    local v=V(tostring(step/2))
+    result[tostring(step)]=v*v
+  end
+  if step>0 then
+    return nextstep(m,step/2,result)
+  else
+    return result
+  end
+end
+function lpeg.times(pattern,n)
+  return P(nextstep(n,2^16,{ "start",["1"]=pattern }))
+end
+local trailingzeros=zero^0*-digit 
+local case_1=period*trailingzeros/""
+local case_2=period*(digit-trailingzeros)^1*(trailingzeros/"")
+local number=digit^1*(case_1+case_2)
+local stripper=Cs((number+1)^0)
+lpeg.patterns.stripzeros=stripper
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-function"] = package.loaded["l-function"] or true
+
+-- original size: 361, stripped down to: 322
+
+if not modules then modules={} end modules ['l-functions']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+functions=functions or {}
+function functions.dummy() end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-string"] = package.loaded["l-string"] or true
+
+-- original size: 5547, stripped down to: 2708
+
+if not modules then modules={} end modules ['l-string']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local string=string
+local sub,gmatch,format,char,byte,rep,lower=string.sub,string.gmatch,string.format,string.char,string.byte,string.rep,string.lower
+local lpegmatch,patterns=lpeg.match,lpeg.patterns
+local P,S,C,Ct,Cc,Cs=lpeg.P,lpeg.S,lpeg.C,lpeg.Ct,lpeg.Cc,lpeg.Cs
+local unquoted=patterns.squote*C(patterns.nosquote)*patterns.squote+patterns.dquote*C(patterns.nodquote)*patterns.dquote
+function string.unquoted(str)
+  return lpegmatch(unquoted,str) or str
+end
+function string.quoted(str)
+  return format("%q",str) 
+end
+function string.count(str,pattern) 
+  local n=0
+  for _ in gmatch(str,pattern) do 
+    n=n+1
+  end
+  return n
+end
+function string.limit(str,n,sentinel) 
+  if #str>n then
+    sentinel=sentinel or "..."
+    return sub(str,1,(n-#sentinel))..sentinel
+  else
+    return str
+  end
+end
+local stripper=patterns.stripper
+local collapser=patterns.collapser
+local longtostring=patterns.longtostring
+function string.strip(str)
+  return lpegmatch(stripper,str) or ""
+end
+function string.collapsespaces(str)
+  return lpegmatch(collapser,str) or ""
+end
+function string.longtostring(str)
+  return lpegmatch(longtostring,str) or ""
+end
+local pattern=P(" ")^0*P(-1)
+function string.is_empty(str)
+  if str=="" then
+    return true
+  else
+    return lpegmatch(pattern,str) and true or false
+  end
+end
+local anything=patterns.anything
+local allescapes=Cc("%")*S(".-+%?()[]*") 
+local someescapes=Cc("%")*S(".-+%()[]")  
+local matchescapes=Cc(".")*S("*?")     
+local pattern_a=Cs ((allescapes+anything )^0 )
+local pattern_b=Cs ((someescapes+matchescapes+anything )^0 )
+local pattern_c=Cs (Cc("^")*(someescapes+matchescapes+anything )^0*Cc("$") )
+function string.escapedpattern(str,simple)
+  return lpegmatch(simple and pattern_b or pattern_a,str)
+end
+function string.topattern(str,lowercase,strict)
+  if str=="" or type(str)~="string" then
+    return ".*"
+  elseif strict then
+    str=lpegmatch(pattern_c,str)
+  else
+    str=lpegmatch(pattern_b,str)
+  end
+  if lowercase then
+    return lower(str)
+  else
+    return str
+  end
+end
+function string.valid(str,default)
+  return (type(str)=="string" and str~="" and str) or default or nil
+end
+string.itself=function(s) return s end
+local pattern=Ct(C(1)^0) 
+function string.totable(str)
+  return lpegmatch(pattern,str)
+end
+local replacer=lpeg.replacer("@","%%") 
+function string.tformat(fmt,...)
+  return format(lpegmatch(replacer,fmt),...)
+end
+string.quote=string.quoted
+string.unquote=string.unquoted
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-table"] = package.loaded["l-table"] or true
+
+-- original size: 31142, stripped down to: 20283
+
+if not modules then modules={} end modules ['l-table']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local type,next,tostring,tonumber,ipairs,select=type,next,tostring,tonumber,ipairs,select
+local table,string=table,string
+local concat,sort,insert,remove=table.concat,table.sort,table.insert,table.remove
+local format,lower,dump=string.format,string.lower,string.dump
+local getmetatable,setmetatable=getmetatable,setmetatable
+local getinfo=debug.getinfo
+local lpegmatch,patterns=lpeg.match,lpeg.patterns
+local floor=math.floor
+local stripper=patterns.stripper
+function table.strip(tab)
+  local lst,l={},0
+  for i=1,#tab do
+    local s=lpegmatch(stripper,tab[i]) or ""
+    if s=="" then
+    else
+      l=l+1
+      lst[l]=s
+    end
+  end
+  return lst
+end
+function table.keys(t)
+  if t then
+    local keys,k={},0
+    for key,_ in next,t do
+      k=k+1
+      keys[k]=key
+    end
+    return keys
+  else
+    return {}
+  end
+end
+local function compare(a,b)
+  local ta,tb=type(a),type(b) 
+  if ta==tb then
+    return a<b
+  else
+    return tostring(a)<tostring(b)
+  end
+end
+local function sortedkeys(tab)
+  if tab then
+    local srt,category,s={},0,0 
+    for key,_ in next,tab do
+      s=s+1
+      srt[s]=key
+      if category==3 then
+      else
+        local tkey=type(key)
+        if tkey=="string" then
+          category=(category==2 and 3) or 1
+        elseif tkey=="number" then
+          category=(category==1 and 3) or 2
+        else
+          category=3
+        end
+      end
+    end
+    if category==0 or category==3 then
+      sort(srt,compare)
+    else
+      sort(srt)
+    end
+    return srt
+  else
+    return {}
+  end
+end
+local function sortedhashkeys(tab,cmp) 
+  if tab then
+    local srt,s={},0
+    for key,_ in next,tab do
+      if key then
+        s=s+1
+        srt[s]=key
+      end
+    end
+    sort(srt,cmp)
+    return srt
+  else
+    return {}
+  end
+end
+function table.allkeys(t)
+  local keys={}
+  for k,v in next,t do
+    for k,v in next,v do
+      keys[k]=true
+    end
+  end
+  return sortedkeys(keys)
+end
+table.sortedkeys=sortedkeys
+table.sortedhashkeys=sortedhashkeys
+local function nothing() end
+local function sortedhash(t,cmp)
+  if t then
+    local s
+    if cmp then
+      s=sortedhashkeys(t,function(a,b) return cmp(t,a,b) end)
+    else
+      s=sortedkeys(t) 
+    end
+    local n=0
+    local m=#s
+    local function kv(s)
+      if n<m then
+        n=n+1
+        local k=s[n]
+        return k,t[k]
+      end
+    end
+    return kv,s
+  else
+    return nothing
+  end
+end
+table.sortedhash=sortedhash
+table.sortedpairs=sortedhash 
+function table.append(t,list)
+  local n=#t
+  for i=1,#list do
+    n=n+1
+    t[n]=list[i]
+  end
+  return t
+end
+function table.prepend(t,list)
+  local nl=#list
+  local nt=nl+#t
+  for i=#t,1,-1 do
+    t[nt]=t[i]
+    nt=nt-1
+  end
+  for i=1,#list do
+    t[i]=list[i]
+  end
+  return t
+end
+function table.merge(t,...) 
+  t=t or {}
+  for i=1,select("#",...) do
+    for k,v in next,(select(i,...)) do
+      t[k]=v
+    end
+  end
+  return t
+end
+function table.merged(...)
+  local t={}
+  for i=1,select("#",...) do
+    for k,v in next,(select(i,...)) do
+      t[k]=v
+    end
+  end
+  return t
+end
+function table.imerge(t,...)
+  local nt=#t
+  for i=1,select("#",...) do
+    local nst=select(i,...)
+    for j=1,#nst do
+      nt=nt+1
+      t[nt]=nst[j]
+    end
+  end
+  return t
+end
+function table.imerged(...)
+  local tmp,ntmp={},0
+  for i=1,select("#",...) do
+    local nst=select(i,...)
+    for j=1,#nst do
+      ntmp=ntmp+1
+      tmp[ntmp]=nst[j]
+    end
+  end
+  return tmp
+end
+local function fastcopy(old,metatabletoo) 
+  if old then
+    local new={}
+    for k,v in next,old do
+      if type(v)=="table" then
+        new[k]=fastcopy(v,metatabletoo) 
+      else
+        new[k]=v
+      end
+    end
+    if metatabletoo then
+      local mt=getmetatable(old)
+      if mt then
+        setmetatable(new,mt)
+      end
+    end
+    return new
+  else
+    return {}
+  end
+end
+local function copy(t,tables) 
+  tables=tables or {}
+  local tcopy={}
+  if not tables[t] then
+    tables[t]=tcopy
+  end
+  for i,v in next,t do 
+    if type(i)=="table" then
+      if tables[i] then
+        i=tables[i]
+      else
+        i=copy(i,tables)
+      end
+    end
+    if type(v)~="table" then
+      tcopy[i]=v
+    elseif tables[v] then
+      tcopy[i]=tables[v]
+    else
+      tcopy[i]=copy(v,tables)
+    end
+  end
+  local mt=getmetatable(t)
+  if mt then
+    setmetatable(tcopy,mt)
+  end
+  return tcopy
+end
+table.fastcopy=fastcopy
+table.copy=copy
+function table.derive(parent) 
+  local child={}
+  if parent then
+    setmetatable(child,{ __index=parent })
+  end
+  return child
+end
+function table.tohash(t,value)
+  local h={}
+  if t then
+    if value==nil then value=true end
+    for _,v in next,t do 
+      h[v]=value
+    end
+  end
+  return h
+end
+function table.fromhash(t)
+  local hsh,h={},0
+  for k,v in next,t do 
+    if v then
+      h=h+1
+      hsh[h]=k
+    end
+  end
+  return hsh
+end
+local noquotes,hexify,handle,reduce,compact,inline,functions
+local reserved=table.tohash { 
+  'and','break','do','else','elseif','end','false','for','function','if',
+  'in','local','nil','not','or','repeat','return','then','true','until','while',
+  'NaN','goto',
+}
+local function simple_table(t)
+  if #t>0 then
+    local n=0
+    for _,v in next,t do
+      n=n+1
+    end
+    if n==#t then
+      local tt,nt={},0
+      for i=1,#t do
+        local v=t[i]
+        local tv=type(v)
+        if tv=="number" then
+          nt=nt+1
+          if hexify then
+            tt[nt]=format("0x%04X",v)
+          else
+            tt[nt]=tostring(v) 
+          end
+        elseif tv=="string" then
+          nt=nt+1
+          tt[nt]=format("%q",v)
+        elseif tv=="boolean" then
+          nt=nt+1
+          tt[nt]=v and "true" or "false"
+        else
+          tt=nil
+          break
+        end
+      end
+      return tt
+    end
+  end
+  return nil
+end
+local propername=patterns.propername 
+local function dummy() end
+local function do_serialize(root,name,depth,level,indexed)
+  if level>0 then
+    depth=depth.." "
+    if indexed then
+      handle(format("%s{",depth))
+    else
+      local tn=type(name)
+      if tn=="number" then
+        if hexify then
+          handle(format("%s[0x%04X]={",depth,name))
+        else
+          handle(format("%s[%s]={",depth,name))
+        end
+      elseif tn=="string" then
+        if noquotes and not reserved[name] and lpegmatch(propername,name) then
+          handle(format("%s%s={",depth,name))
+        else
+          handle(format("%s[%q]={",depth,name))
+        end
+      elseif tn=="boolean" then
+        handle(format("%s[%s]={",depth,name and "true" or "false"))
+      else
+        handle(format("%s{",depth))
+      end
+    end
+  end
+  if root and next(root) then
+    local first,last=nil,0
+    if compact then
+      last=#root
+      for k=1,last do
+        if root[k]==nil then
+          last=k-1
+          break
+        end
+      end
+      if last>0 then
+        first=1
+      end
+    end
+    local sk=sortedkeys(root)
+    for i=1,#sk do
+      local k=sk[i]
+      local v=root[k]
+      local tv,tk=type(v),type(k)
+      if compact and first and tk=="number" and k>=first and k<=last then
+        if tv=="number" then
+          if hexify then
+            handle(format("%s 0x%04X,",depth,v))
+          else
+            handle(format("%s %s,",depth,v)) 
+          end
+        elseif tv=="string" then
+          if reduce and tonumber(v) then
+            handle(format("%s %s,",depth,v))
+          else
+            handle(format("%s %q,",depth,v))
+          end
+        elseif tv=="table" then
+          if not next(v) then
+            handle(format("%s {},",depth))
+          elseif inline then 
+            local st=simple_table(v)
+            if st then
+              handle(format("%s { %s },",depth,concat(st,", ")))
+            else
+              do_serialize(v,k,depth,level+1,true)
+            end
+          else
+            do_serialize(v,k,depth,level+1,true)
+          end
+        elseif tv=="boolean" then
+          handle(format("%s %s,",depth,v and "true" or "false"))
+        elseif tv=="function" then
+          if functions then
+            handle(format('%s load(%q),',depth,dump(v))) 
+          else
+            handle(format('%s "function",',depth))
+          end
+        else
+          handle(format("%s %q,",depth,tostring(v)))
+        end
+      elseif k=="__p__" then 
+        if false then
+          handle(format("%s __p__=nil,",depth))
+        end
+      elseif tv=="number" then
+        if tk=="number" then
+          if hexify then
+            handle(format("%s [0x%04X]=0x%04X,",depth,k,v))
+          else
+            handle(format("%s [%s]=%s,",depth,k,v)) 
+          end
+        elseif tk=="boolean" then
+          if hexify then
+            handle(format("%s [%s]=0x%04X,",depth,k and "true" or "false",v))
+          else
+            handle(format("%s [%s]=%s,",depth,k and "true" or "false",v)) 
+          end
+        elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
+          if hexify then
+            handle(format("%s %s=0x%04X,",depth,k,v))
+          else
+            handle(format("%s %s=%s,",depth,k,v)) 
+          end
+        else
+          if hexify then
+            handle(format("%s [%q]=0x%04X,",depth,k,v))
+          else
+            handle(format("%s [%q]=%s,",depth,k,v)) 
+          end
+        end
+      elseif tv=="string" then
+        if reduce and tonumber(v) then
+          if tk=="number" then
+            if hexify then
+              handle(format("%s [0x%04X]=%s,",depth,k,v))
+            else
+              handle(format("%s [%s]=%s,",depth,k,v))
+            end
+          elseif tk=="boolean" then
+            handle(format("%s [%s]=%s,",depth,k and "true" or "false",v))
+          elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
+            handle(format("%s %s=%s,",depth,k,v))
+          else
+            handle(format("%s [%q]=%s,",depth,k,v))
+          end
+        else
+          if tk=="number" then
+            if hexify then
+              handle(format("%s [0x%04X]=%q,",depth,k,v))
+            else
+              handle(format("%s [%s]=%q,",depth,k,v))
+            end
+          elseif tk=="boolean" then
+            handle(format("%s [%s]=%q,",depth,k and "true" or "false",v))
+          elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
+            handle(format("%s %s=%q,",depth,k,v))
+          else
+            handle(format("%s [%q]=%q,",depth,k,v))
+          end
+        end
+      elseif tv=="table" then
+        if not next(v) then
+          if tk=="number" then
+            if hexify then
+              handle(format("%s [0x%04X]={},",depth,k))
+            else
+              handle(format("%s [%s]={},",depth,k))
+            end
+          elseif tk=="boolean" then
+            handle(format("%s [%s]={},",depth,k and "true" or "false"))
+          elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
+            handle(format("%s %s={},",depth,k))
+          else
+            handle(format("%s [%q]={},",depth,k))
+          end
+        elseif inline then
+          local st=simple_table(v)
+          if st then
+            if tk=="number" then
+              if hexify then
+                handle(format("%s [0x%04X]={ %s },",depth,k,concat(st,", ")))
+              else
+                handle(format("%s [%s]={ %s },",depth,k,concat(st,", ")))
+              end
+            elseif tk=="boolean" then
+              handle(format("%s [%s]={ %s },",depth,k and "true" or "false",concat(st,", ")))
+            elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
+              handle(format("%s %s={ %s },",depth,k,concat(st,", ")))
+            else
+              handle(format("%s [%q]={ %s },",depth,k,concat(st,", ")))
+            end
+          else
+            do_serialize(v,k,depth,level+1)
+          end
+        else
+          do_serialize(v,k,depth,level+1)
+        end
+      elseif tv=="boolean" then
+        if tk=="number" then
+          if hexify then
+            handle(format("%s [0x%04X]=%s,",depth,k,v and "true" or "false"))
+          else
+            handle(format("%s [%s]=%s,",depth,k,v and "true" or "false"))
+          end
+        elseif tk=="boolean" then
+          handle(format("%s [%s]=%s,",depth,tostring(k),v and "true" or "false"))
+        elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
+          handle(format("%s %s=%s,",depth,k,v and "true" or "false"))
+        else
+          handle(format("%s [%q]=%s,",depth,k,v and "true" or "false"))
+        end
+      elseif tv=="function" then
+        if functions then
+          local f=getinfo(v).what=="C" and dump(dummy) or dump(v)
+          if tk=="number" then
+            if hexify then
+              handle(format("%s [0x%04X]=load(%q),",depth,k,f))
+            else
+              handle(format("%s [%s]=load(%q),",depth,k,f))
+            end
+          elseif tk=="boolean" then
+            handle(format("%s [%s]=load(%q),",depth,k and "true" or "false",f))
+          elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
+            handle(format("%s %s=load(%q),",depth,k,f))
+          else
+            handle(format("%s [%q]=load(%q),",depth,k,f))
+          end
+        end
+      else
+        if tk=="number" then
+          if hexify then
+            handle(format("%s [0x%04X]=%q,",depth,k,tostring(v)))
+          else
+            handle(format("%s [%s]=%q,",depth,k,tostring(v)))
+          end
+        elseif tk=="boolean" then
+          handle(format("%s [%s]=%q,",depth,k and "true" or "false",tostring(v)))
+        elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
+          handle(format("%s %s=%q,",depth,k,tostring(v)))
+        else
+          handle(format("%s [%q]=%q,",depth,k,tostring(v)))
+        end
+      end
+    end
+  end
+  if level>0 then
+    handle(format("%s},",depth))
+  end
+end
+local function serialize(_handle,root,name,specification) 
+  local tname=type(name)
+  if type(specification)=="table" then
+    noquotes=specification.noquotes
+    hexify=specification.hexify
+    handle=_handle or specification.handle or print
+    reduce=specification.reduce or false
+    functions=specification.functions
+    compact=specification.compact
+    inline=specification.inline and compact
+    if functions==nil then
+      functions=true
+    end
+    if compact==nil then
+      compact=true
+    end
+    if inline==nil then
+      inline=compact
+    end
+  else
+    noquotes=false
+    hexify=false
+    handle=_handle or print
+    reduce=false
+    compact=true
+    inline=true
+    functions=true
+  end
+  if tname=="string" then
+    if name=="return" then
+      handle("return {")
+    else
+      handle(name.."={")
+    end
+  elseif tname=="number" then
+    if hexify then
+      handle(format("[0x%04X]={",name))
+    else
+      handle("["..name.."]={")
+    end
+  elseif tname=="boolean" then
+    if name then
+      handle("return {")
+    else
+      handle("{")
+    end
+  else
+    handle("t={")
+  end
+  if root then
+    if getmetatable(root) then 
+      local dummy=root._w_h_a_t_e_v_e_r_
+      root._w_h_a_t_e_v_e_r_=nil
+    end
+    if next(root) then
+      do_serialize(root,name,"",0)
+    end
+  end
+  handle("}")
+end
+function table.serialize(root,name,specification)
+  local t,n={},0
+  local function flush(s)
+    n=n+1
+    t[n]=s
+  end
+  serialize(flush,root,name,specification)
+  return concat(t,"\n")
+end
+table.tohandle=serialize
+local maxtab=2*1024
+function table.tofile(filename,root,name,specification)
+  local f=io.open(filename,'w')
+  if f then
+    if maxtab>1 then
+      local t,n={},0
+      local function flush(s)
+        n=n+1
+        t[n]=s
+        if n>maxtab then
+          f:write(concat(t,"\n"),"\n") 
+          t,n={},0 
+        end
+      end
+      serialize(flush,root,name,specification)
+      f:write(concat(t,"\n"),"\n")
+    else
+      local function flush(s)
+        f:write(s,"\n")
+      end
+      serialize(flush,root,name,specification)
+    end
+    f:close()
+    io.flush()
+  end
+end
+local function flattened(t,f,depth) 
+  if f==nil then
+    f={}
+    depth=0xFFFF
+  elseif tonumber(f) then
+    depth=f
+    f={}
+  elseif not depth then
+    depth=0xFFFF
+  end
+  for k,v in next,t do
+    if type(k)~="number" then
+      if depth>0 and type(v)=="table" then
+        flattened(v,f,depth-1)
+      else
+        f[#f+1]=v
+      end
+    end
+  end
+  for k=1,#t do
+    local v=t[k]
+    if depth>0 and type(v)=="table" then
+      flattened(v,f,depth-1)
+    else
+      f[#f+1]=v
+    end
+  end
+  return f
+end
+table.flattened=flattened
+local function unnest(t,f) 
+  if not f then     
+    f={}      
+  end
+  for i=1,#t do
+    local v=t[i]
+    if type(v)=="table" then
+      if type(v[1])=="table" then
+        unnest(v,f)
+      else
+        f[#f+1]=v
+      end
+    else
+      f[#f+1]=v
+    end
+  end
+  return f
+end
+function table.unnest(t) 
+  return unnest(t)
+end
+local function are_equal(a,b,n,m) 
+  if a and b and #a==#b then
+    n=n or 1
+    m=m or #a
+    for i=n,m do
+      local ai,bi=a[i],b[i]
+      if ai==bi then
+      elseif type(ai)=="table" and type(bi)=="table" then
+        if not are_equal(ai,bi) then
+          return false
+        end
+      else
+        return false
+      end
+    end
+    return true
+  else
+    return false
+  end
+end
+local function identical(a,b) 
+  for ka,va in next,a do
+    local vb=b[ka]
+    if va==vb then
+    elseif type(va)=="table" and type(vb)=="table" then
+      if not identical(va,vb) then
+        return false
+      end
+    else
+      return false
+    end
+  end
+  return true
+end
+table.identical=identical
+table.are_equal=are_equal
+function table.compact(t) 
+  if t then
+    for k,v in next,t do
+      if not next(v) then 
+        t[k]=nil
+      end
+    end
+  end
+end
+function table.contains(t,v)
+  if t then
+    for i=1,#t do
+      if t[i]==v then
+        return i
+      end
+    end
+  end
+  return false
+end
+function table.count(t)
+  local n=0
+  for k,v in next,t do
+    n=n+1
+  end
+  return n
+end
+function table.swapped(t,s) 
+  local n={}
+  if s then
+    for k,v in next,s do
+      n[k]=v
+    end
+  end
+  for k,v in next,t do
+    n[v]=k
+  end
+  return n
+end
+function table.mirrored(t) 
+  local n={}
+  for k,v in next,t do
+    n[v]=k
+    n[k]=v
+  end
+  return n
+end
+function table.reversed(t)
+  if t then
+    local tt,tn={},#t
+    if tn>0 then
+      local ttn=0
+      for i=tn,1,-1 do
+        ttn=ttn+1
+        tt[ttn]=t[i]
+      end
+    end
+    return tt
+  end
+end
+function table.reverse(t)
+  if t then
+    local n=#t
+    for i=1,floor(n/2) do
+      local j=n-i+1
+      t[i],t[j]=t[j],t[i]
+    end
+    return t
+  end
+end
+function table.sequenced(t,sep,simple) 
+  if not t then
+    return ""
+  end
+  local n=#t
+  local s={}
+  if n>0 then
+    for i=1,n do
+      s[i]=tostring(t[i])
+    end
+  else
+    n=0
+    for k,v in sortedhash(t) do
+      if simple then
+        if v==true then
+          n=n+1
+          s[n]=k
+        elseif v and v~="" then
+          n=n+1
+          s[n]=k.."="..tostring(v)
+        end
+      else
+        n=n+1
+        s[n]=k.."="..tostring(v)
+      end
+    end
+  end
+  return concat(s,sep or " | ")
+end
+function table.print(t,...)
+  if type(t)~="table" then
+    print(tostring(t))
+  else
+    serialize(print,t,...)
+  end
+end
+if setinspector then
+  setinspector(function(v) if type(v)=="table" then serialize(print,v,"table") return true end end)
+end
+function table.sub(t,i,j)
+  return { unpack(t,i,j) }
+end
+function table.is_empty(t)
+  return not t or not next(t)
+end
+function table.has_one_entry(t)
+  return t and not next(t,next(t))
+end
+function table.loweredkeys(t) 
+  local l={}
+  for k,v in next,t do
+    l[lower(k)]=v
+  end
+  return l
+end
+function table.unique(old)
+  local hash={}
+  local new={}
+  local n=0
+  for i=1,#old do
+    local oi=old[i]
+    if not hash[oi] then
+      n=n+1
+      new[n]=oi
+      hash[oi]=true
+    end
+  end
+  return new
+end
+function table.sorted(t,...)
+  sort(t,...)
+  return t 
+end
+function table.values(t,s) 
+  if t then
+    local values,keys,v={},{},0
+    for key,value in next,t do
+      if not keys[value] then
+        v=v+1
+        values[v]=value
+        keys[k]=key
+      end
+    end
+    if s then
+      sort(values)
+    end
+    return values
+  else
+    return {}
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-io"] = package.loaded["l-io"] or true
+
+-- original size: 8817, stripped down to: 6340
+
+if not modules then modules={} end modules ['l-io']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local io=io
+local byte,find,gsub,format=string.byte,string.find,string.gsub,string.format
+local concat=table.concat
+local floor=math.floor
+local type=type
+if string.find(os.getenv("PATH"),";") then
+  io.fileseparator,io.pathseparator="\\",";"
+else
+  io.fileseparator,io.pathseparator="/",":"
+end
+local function readall(f)
+  return f:read("*all")
+end
+local function readall(f)
+  local size=f:seek("end")
+  if size==0 then
+    return ""
+  elseif size<1024*1024 then
+    f:seek("set",0)
+    return f:read('*all')
+  else
+    local done=f:seek("set",0)
+    local step
+    if size<1024*1024 then
+      step=1024*1024
+    elseif size>16*1024*1024 then
+      step=16*1024*1024
+    else
+      step=floor(size/(1024*1024))*1024*1024/8
+    end
+    local data={}
+    while true do
+      local r=f:read(step)
+      if not r then
+        return concat(data)
+      else
+        data[#data+1]=r
+      end
+    end
+  end
+end
+io.readall=readall
+function io.loaddata(filename,textmode) 
+  local f=io.open(filename,(textmode and 'r') or 'rb')
+  if f then
+    local data=readall(f)
+    f:close()
+    if #data>0 then
+      return data
+    end
+  end
+end
+function io.savedata(filename,data,joiner)
+  local f=io.open(filename,"wb")
+  if f then
+    if type(data)=="table" then
+      f:write(concat(data,joiner or ""))
+    elseif type(data)=="function" then
+      data(f)
+    else
+      f:write(data or "")
+    end
+    f:close()
+    io.flush()
+    return true
+  else
+    return false
+  end
+end
+function io.loadlines(filename,n) 
+  local f=io.open(filename,'r')
+  if not f then
+  elseif n then
+    local lines={}
+    for i=1,n do
+      local line=f:read("*lines")
+      if line then
+        lines[#lines+1]=line
+      else
+        break
+      end
+    end
+    f:close()
+    lines=concat(lines,"\n")
+    if #lines>0 then
+      return lines
+    end
+  else
+    local line=f:read("*line") or ""
+    f:close()
+    if #line>0 then
+      return line
+    end
+  end
+end
+function io.loadchunk(filename,n)
+  local f=io.open(filename,'rb')
+  if f then
+    local data=f:read(n or 1024)
+    f:close()
+    if #data>0 then
+      return data
+    end
+  end
+end
+function io.exists(filename)
+  local f=io.open(filename)
+  if f==nil then
+    return false
+  else
+    f:close()
+    return true
+  end
+end
+function io.size(filename)
+  local f=io.open(filename)
+  if f==nil then
+    return 0
+  else
+    local s=f:seek("end")
+    f:close()
+    return s
+  end
+end
+function io.noflines(f)
+  if type(f)=="string" then
+    local f=io.open(filename)
+    if f then
+      local n=f and io.noflines(f) or 0
+      f:close()
+      return n
+    else
+      return 0
+    end
+  else
+    local n=0
+    for _ in f:lines() do
+      n=n+1
+    end
+    f:seek('set',0)
+    return n
+  end
+end
+local nextchar={
+  [ 4]=function(f)
+    return f:read(1,1,1,1)
+  end,
+  [ 2]=function(f)
+    return f:read(1,1)
+  end,
+  [ 1]=function(f)
+    return f:read(1)
+  end,
+  [-2]=function(f)
+    local a,b=f:read(1,1)
+    return b,a
+  end,
+  [-4]=function(f)
+    local a,b,c,d=f:read(1,1,1,1)
+    return d,c,b,a
+  end
+}
+function io.characters(f,n)
+  if f then
+    return nextchar[n or 1],f
+  end
+end
+local nextbyte={
+  [4]=function(f)
+    local a,b,c,d=f:read(1,1,1,1)
+    if d then
+      return byte(a),byte(b),byte(c),byte(d)
+    end
+  end,
+  [3]=function(f)
+    local a,b,c=f:read(1,1,1)
+    if b then
+      return byte(a),byte(b),byte(c)
+    end
+  end,
+  [2]=function(f)
+    local a,b=f:read(1,1)
+    if b then
+      return byte(a),byte(b)
+    end
+  end,
+  [1]=function (f)
+    local a=f:read(1)
+    if a then
+      return byte(a)
+    end
+  end,
+  [-2]=function (f)
+    local a,b=f:read(1,1)
+    if b then
+      return byte(b),byte(a)
+    end
+  end,
+  [-3]=function(f)
+    local a,b,c=f:read(1,1,1)
+    if b then
+      return byte(c),byte(b),byte(a)
+    end
+  end,
+  [-4]=function(f)
+    local a,b,c,d=f:read(1,1,1,1)
+    if d then
+      return byte(d),byte(c),byte(b),byte(a)
+    end
+  end
+}
+function io.bytes(f,n)
+  if f then
+    return nextbyte[n or 1],f
+  else
+    return nil,nil
+  end
+end
+function io.ask(question,default,options)
+  while true do
+    io.write(question)
+    if options then
+      io.write(format(" [%s]",concat(options,"|")))
+    end
+    if default then
+      io.write(format(" [%s]",default))
+    end
+    io.write(format(" "))
+    io.flush()
+    local answer=io.read()
+    answer=gsub(answer,"^%s*(.*)%s*$","%1")
+    if answer=="" and default then
+      return default
+    elseif not options then
+      return answer
+    else
+      for k=1,#options do
+        if options[k]==answer then
+          return answer
+        end
+      end
+      local pattern="^"..answer
+      for k=1,#options do
+        local v=options[k]
+        if find(v,pattern) then
+          return v
+        end
+      end
+    end
+  end
+end
+local function readnumber(f,n,m)
+  if m then
+    f:seek("set",n)
+    n=m
+  end
+  if n==1 then
+    return byte(f:read(1))
+  elseif n==2 then
+    local a,b=byte(f:read(2),1,2)
+    return 256*a+b
+  elseif n==3 then
+    local a,b,c=byte(f:read(3),1,3)
+    return 256*256*a+256*b+c
+  elseif n==4 then
+    local a,b,c,d=byte(f:read(4),1,4)
+    return 256*256*256*a+256*256*b+256*c+d
+  elseif n==8 then
+    local a,b=readnumber(f,4),readnumber(f,4)
+    return 256*a+b
+  elseif n==12 then
+    local a,b,c=readnumber(f,4),readnumber(f,4),readnumber(f,4)
+    return 256*256*a+256*b+c
+  elseif n==-2 then
+    local b,a=byte(f:read(2),1,2)
+    return 256*a+b
+  elseif n==-3 then
+    local c,b,a=byte(f:read(3),1,3)
+    return 256*256*a+256*b+c
+  elseif n==-4 then
+    local d,c,b,a=byte(f:read(4),1,4)
+    return 256*256*256*a+256*256*b+256*c+d
+  elseif n==-8 then
+    local h,g,f,e,d,c,b,a=byte(f:read(8),1,8)
+    return 256*256*256*256*256*256*256*a+256*256*256*256*256*256*b+256*256*256*256*256*c+256*256*256*256*d+256*256*256*e+256*256*f+256*g+h
+  else
+    return 0
+  end
+end
+io.readnumber=readnumber
+function io.readstring(f,n,m)
+  if m then
+    f:seek("set",n)
+    n=m
+  end
+  local str=gsub(f:read(n),"\000","")
+  return str
+end
+if not io.i_limiter then function io.i_limiter() end end 
+if not io.o_limiter then function io.o_limiter() end end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-number"] = package.loaded["l-number"] or true
+
+-- original size: 4939, stripped down to: 2830
+
+if not modules then modules={} end modules ['l-number']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local tostring,tonumber=tostring,tonumber
+local format,floor,match,rep=string.format,math.floor,string.match,string.rep
+local concat,insert=table.concat,table.insert
+local lpegmatch=lpeg.match
+number=number or {}
+local number=number
+if bit32 then 
+  local btest,bor=bit32.btest,bit32.bor
+  function number.bit(p)
+    return 2^(p-1) 
+  end
+  number.hasbit=btest
+  number.setbit=bor
+  function number.setbit(x,p) 
+    return btest(x,p) and x or x+p
+  end
+  function number.clearbit(x,p)
+    return btest(x,p) and x-p or x
+  end
+else
+  function number.bit(p)
+    return 2^(p-1) 
+  end
+  function number.hasbit(x,p) 
+    return x%(p+p)>=p
+  end
+  function number.setbit(x,p)
+    return (x%(p+p)>=p) and x or x+p
+  end
+  function number.clearbit(x,p)
+    return (x%(p+p)>=p) and x-p or x
+  end
+end
+if bit32 then
+  local bextract=bit32.extract
+  local t={
+    "0","0","0","0","0","0","0","0",
+    "0","0","0","0","0","0","0","0",
+    "0","0","0","0","0","0","0","0",
+    "0","0","0","0","0","0","0","0",
+  }
+  function number.tobitstring(b,m)
+    local n=32
+    for i=0,31 do
+      local v=bextract(b,i)
+      local k=32-i
+      if v==1 then
+        n=k
+        t[k]="1"
+      else
+        t[k]="0"
+      end
+    end
+    if m then
+      m=33-m*8
+      if m<1 then
+        m=1
+      end
+      return concat(t,"",m)
+    elseif n<8 then
+      return concat(t)
+    elseif n<16 then
+      return concat(t,"",9)
+    elseif n<24 then
+      return concat(t,"",17)
+    else
+      return concat(t,"",25)
+    end
+  end
+else
+  function number.tobitstring(n,m)
+    if n>0 then
+      local t={}
+      while n>0 do
+        insert(t,1,n%2>0 and 1 or 0)
+        n=floor(n/2)
+      end
+      local nn=8-#t%8
+      if nn>0 and nn<8 then
+        for i=1,nn do
+          insert(t,1,0)
+        end
+      end
+      if m then
+        m=m*8-#t
+        if m>0 then
+          insert(t,1,rep("0",m))
+        end
+      end
+      return concat(t)
+    elseif m then
+      rep("00000000",m)
+    else
+      return "00000000"
+    end
+  end
+end
+function number.valid(str,default)
+  return tonumber(str) or default or nil
+end
+function number.toevenhex(n)
+  local s=format("%X",n)
+  if #s%2==0 then
+    return s
+  else
+    return "0"..s
+  end
+end
+local one=lpeg.C(1-lpeg.S('')/tonumber)^1
+function number.toset(n)
+  return lpegmatch(one,tostring(n))
+end
+local function bits(n,i,...)
+  if n>0 then
+    local m=n%2
+    local n=floor(n/2)
+    if m>0 then
+      return bits(n,i+1,i,...)
+    else
+      return bits(n,i+1,...)
+    end
+  else
+    return...
+  end
+end
+function number.bits(n)
+  return { bits(n,1) }
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-set"] = package.loaded["l-set"] or true
+
+-- original size: 1923, stripped down to: 1133
+
+if not modules then modules={} end modules ['l-set']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+set=set or {}
+local nums={}
+local tabs={}
+local concat=table.concat
+local next,type=next,type
+set.create=table.tohash
+function set.tonumber(t)
+  if next(t) then
+    local s=""
+    for k,v in next,t do
+      if v then
+        s=s.." "..k
+      end
+    end
+    local n=nums[s]
+    if not n then
+      n=#tabs+1
+      tabs[n]=t
+      nums[s]=n
+    end
+    return n
+  else
+    return 0
+  end
+end
+function set.totable(n)
+  if n==0 then
+    return {}
+  else
+    return tabs[n] or {}
+  end
+end
+function set.tolist(n)
+  if n==0 or not tabs[n] then
+    return ""
+  else
+    local t,n={},0
+    for k,v in next,tabs[n] do
+      if v then
+        n=n+1
+        t[n]=k
+      end
+    end
+    return concat(t," ")
+  end
+end
+function set.contains(n,s)
+  if type(n)=="table" then
+    return n[s]
+  elseif n==0 then
+    return false
+  else
+    local t=tabs[n]
+    return t and t[s]
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-os"] = package.loaded["l-os"] or true
+
+-- original size: 16023, stripped down to: 9634
+
+if not modules then modules={} end modules ['l-os']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local os=os
+local date,time=os.date,os.time
+local find,format,gsub,upper,gmatch=string.find,string.format,string.gsub,string.upper,string.gmatch
+local concat=table.concat
+local random,ceil,randomseed=math.random,math.ceil,math.randomseed
+local rawget,rawset,type,getmetatable,setmetatable,tonumber,tostring=rawget,rawset,type,getmetatable,setmetatable,tonumber,tostring
+math.initialseed=tonumber(string.sub(string.reverse(tostring(ceil(socket and socket.gettime()*10000 or time()))),1,6))
+randomseed(math.initialseed)
+if not os.__getenv__ then
+  os.__getenv__=os.getenv
+  os.__setenv__=os.setenv
+  if os.env then
+    local osgetenv=os.getenv
+    local ossetenv=os.setenv
+    local osenv=os.env   local _=osenv.PATH 
+    function os.setenv(k,v)
+      if v==nil then
+        v=""
+      end
+      local K=upper(k)
+      osenv[K]=v
+      if type(v)=="table" then
+        v=concat(v,";") 
+      end
+      ossetenv(K,v)
+    end
+    function os.getenv(k)
+      local K=upper(k)
+      local v=osenv[K] or osenv[k] or osgetenv(K) or osgetenv(k)
+      if v=="" then
+        return nil
+      else
+        return v
+      end
+    end
+  else
+    local ossetenv=os.setenv
+    local osgetenv=os.getenv
+    local osenv={}
+    function os.setenv(k,v)
+      if v==nil then
+        v=""
+      end
+      local K=upper(k)
+      osenv[K]=v
+    end
+    function os.getenv(k)
+      local K=upper(k)
+      local v=osenv[K] or osgetenv(K) or osgetenv(k)
+      if v=="" then
+        return nil
+      else
+        return v
+      end
+    end
+    local function __index(t,k)
+      return os.getenv(k)
+    end
+    local function __newindex(t,k,v)
+      os.setenv(k,v)
+    end
+    os.env={}
+    setmetatable(os.env,{ __index=__index,__newindex=__newindex } )
+  end
+end
+local execute,spawn,exec,iopopen,ioflush=os.execute,os.spawn or os.execute,os.exec or os.execute,io.popen,io.flush
+function os.execute(...) ioflush() return execute(...) end
+function os.spawn (...) ioflush() return spawn (...) end
+function os.exec  (...) ioflush() return exec  (...) end
+function io.popen (...) ioflush() return iopopen(...) end
+function os.resultof(command)
+  local handle=io.popen(command,"r")
+  if handle then
+    local result=handle:read("*all") or ""
+    handle:close()
+    return result
+  else
+    return ""
+  end
+end
+if not io.fileseparator then
+  if find(os.getenv("PATH"),";") then
+    io.fileseparator,io.pathseparator,os.type="\\",";",os.type or "mswin"
+  else
+    io.fileseparator,io.pathseparator,os.type="/",":",os.type or "unix"
+  end
+end
+os.type=os.type or (io.pathseparator==";"    and "windows") or "unix"
+os.name=os.name or (os.type=="windows" and "mswin" ) or "linux"
+if os.type=="windows" then
+  os.libsuffix,os.binsuffix,os.binsuffixes='dll','exe',{ 'exe','cmd','bat' }
+else
+  os.libsuffix,os.binsuffix,os.binsuffixes='so','',{ '' }
+end
+local launchers={
+  windows="start %s",
+  macosx="open %s",
+  unix="$BROWSER %s &> /dev/null &",
+}
+function os.launch(str)
+  os.execute(format(launchers[os.name] or launchers.unix,str))
+end
+if not os.times then
+  function os.times()
+    return {
+      utime=os.gettimeofday(),
+      stime=0,
+      cutime=0,
+      cstime=0,
+    }
+  end
+end
+local gettimeofday=os.gettimeofday or os.clock
+os.gettimeofday=gettimeofday
+local startuptime=gettimeofday()
+function os.runtime()
+  return gettimeofday()-startuptime
+end
+local resolvers=os.resolvers or {}
+os.resolvers=resolvers
+setmetatable(os,{ __index=function(t,k)
+  local r=resolvers[k]
+  return r and r(t,k) or nil 
+end })
+local name,platform=os.name or "linux",os.getenv("MTX_PLATFORM") or ""
+local function guess()
+  local architecture=os.resultof("uname -m") or ""
+  if architecture~="" then
+    return architecture
+  end
+  architecture=os.getenv("HOSTTYPE") or ""
+  if architecture~="" then
+    return architecture
+  end
+  return os.resultof("echo $HOSTTYPE") or ""
+end
+if platform~="" then
+  os.platform=platform
+elseif os.type=="windows" then
+  function resolvers.platform(t,k)
+    local platform,architecture="",os.getenv("PROCESSOR_ARCHITECTURE") or ""
+    if find(architecture,"AMD64") then
+      platform="win64"
+    else
+      platform="mswin"
+    end
+    os.setenv("MTX_PLATFORM",platform)
+    os.platform=platform
+    return platform
+  end
+elseif name=="linux" then
+  function resolvers.platform(t,k)
+    local platform,architecture="",os.getenv("HOSTTYPE") or os.resultof("uname -m") or ""
+    if find(architecture,"x86_64") then
+      platform="linux-64"
+    elseif find(architecture,"ppc") then
+      platform="linux-ppc"
+    else
+      platform="linux"
+    end
+    os.setenv("MTX_PLATFORM",platform)
+    os.platform=platform
+    return platform
+  end
+elseif name=="macosx" then
+  function resolvers.platform(t,k)
+    local platform,architecture="",os.resultof("echo $HOSTTYPE") or ""
+    if architecture=="" then
+      platform="osx-intel"
+    elseif find(architecture,"i386") then
+      platform="osx-intel"
+    elseif find(architecture,"x86_64") then
+      platform="osx-64"
+    else
+      platform="osx-ppc"
+    end
+    os.setenv("MTX_PLATFORM",platform)
+    os.platform=platform
+    return platform
+  end
+elseif name=="sunos" then
+  function resolvers.platform(t,k)
+    local platform,architecture="",os.resultof("uname -m") or ""
+    if find(architecture,"sparc") then
+      platform="solaris-sparc"
+    else 
+      platform="solaris-intel"
+    end
+    os.setenv("MTX_PLATFORM",platform)
+    os.platform=platform
+    return platform
+  end
+elseif name=="freebsd" then
+  function resolvers.platform(t,k)
+    local platform,architecture="",os.resultof("uname -m") or ""
+    if find(architecture,"amd64") then
+      platform="freebsd-amd64"
+    else
+      platform="freebsd"
+    end
+    os.setenv("MTX_PLATFORM",platform)
+    os.platform=platform
+    return platform
+  end
+elseif name=="kfreebsd" then
+  function resolvers.platform(t,k)
+    local platform,architecture="",os.getenv("HOSTTYPE") or os.resultof("uname -m") or ""
+    if find(architecture,"x86_64") then
+      platform="kfreebsd-amd64"
+    else
+      platform="kfreebsd-i386"
+    end
+    os.setenv("MTX_PLATFORM",platform)
+    os.platform=platform
+    return platform
+  end
+else
+  function resolvers.platform(t,k)
+    local platform="linux"
+    os.setenv("MTX_PLATFORM",platform)
+    os.platform=platform
+    return platform
+  end
+end
+function resolvers.bits(t,k)
+  local bits=find(os.platform,"64") and 64 or 32
+  os.bits=bits
+  return bits
+end
+local t={ 8,9,"a","b" }
+function os.uuid()
+  return format("%04x%04x-4%03x-%s%03x-%04x-%04x%04x%04x",
+    random(0xFFFF),random(0xFFFF),
+    random(0x0FFF),
+    t[ceil(random(4))] or 8,random(0x0FFF),
+    random(0xFFFF),
+    random(0xFFFF),random(0xFFFF),random(0xFFFF)
+  )
+end
+local d
+function os.timezone(delta)
+  d=d or tonumber(tonumber(date("%H")-date("!%H")))
+  if delta then
+    if d>0 then
+      return format("+%02i:00",d)
+    else
+      return format("-%02i:00",-d)
+    end
+  else
+    return 1
+  end
+end
+local timeformat=format("%%s%s",os.timezone(true))
+local dateformat="!%Y-%m-%d %H:%M:%S"
+local lasttime=nil
+local lastdate=nil
+function os.fulltime(t,default)
+  t=t and tonumber(t) or 0
+  if t>0 then
+  elseif default then
+    return default
+  else
+    t=time()
+  end
+  if t~=lasttime then
+    lasttime=t
+    lastdate=format(timeformat,date(dateformat))
+  end
+  return lastdate
+end
+local dateformat="%Y-%m-%d %H:%M:%S"
+local lasttime=nil
+local lastdate=nil
+function os.localtime(t,default)
+  t=t and tonumber(t) or 0
+  if t>0 then
+  elseif default then
+    return default
+  else
+    t=time()
+  end
+  if t~=lasttime then
+    lasttime=t
+    lastdate=date(dateformat,t)
+  end
+  return lastdate
+end
+function os.converttime(t,default)
+  local t=tonumber(t)
+  if t and t>0 then
+    return date(dateformat,t)
+  else
+    return default or "-"
+  end
+end
+local memory={}
+local function which(filename)
+  local fullname=memory[filename]
+  if fullname==nil then
+    local suffix=file.suffix(filename)
+    local suffixes=suffix=="" and os.binsuffixes or { suffix }
+    for directory in gmatch(os.getenv("PATH"),"[^"..io.pathseparator.."]+") do
+      local df=file.join(directory,filename)
+      for i=1,#suffixes do
+        local dfs=file.addsuffix(df,suffixes[i])
+        if io.exists(dfs) then
+          fullname=dfs
+          break
+        end
+      end
+    end
+    if not fullname then
+      fullname=false
+    end
+    memory[filename]=fullname
+  end
+  return fullname
+end
+os.which=which
+os.where=which
+function os.today()
+  return date("!*t") 
+end
+function os.now()
+  return date("!%Y-%m-%d %H:%M:%S") 
+end
+if not os.sleep then
+  local socket=socket
+  function os.sleep(n)
+    if not socket then
+      socket=require("socket")
+    end
+    socket.sleep(n)
+  end
+end
+local function isleapyear(year)
+  return (year%400==0) or ((year%100~=0) and (year%4==0))
+end
+os.isleapyear=isleapyear
+local days={ 31,28,31,30,31,30,31,31,30,31,30,31 }
+local function nofdays(year,month)
+  if not month then
+    return isleapyear(year) and 365 or 364
+  else
+    return month==2 and isleapyear(year) and 29 or days[month]
+  end
+end
+os.nofdays=nofdays
+function os.weekday(day,month,year)
+  return date("%w",time { year=year,month=month,day=day })+1
+end
+function os.validdate(year,month,day)
+  if month<1 then
+    month=1
+  elseif month>12 then
+    month=12
+  end
+  if day<1 then
+    day=1
+  else
+    local max=nofdays(year,month)
+    if day>max then
+      day=max
+    end
+  end
+  return year,month,day
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-file"] = package.loaded["l-file"] or true
+
+-- original size: 18308, stripped down to: 9948
+
+if not modules then modules={} end modules ['l-file']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+file=file or {}
+local file=file
+if not lfs then
+  lfs=optionalrequire("lfs")
+end
+if not lfs then
+  lfs={
+    getcurrentdir=function()
+      return "."
+    end,
+    attributes=function()
+      return nil
+    end,
+    isfile=function(name)
+      local f=io.open(name,'rb')
+      if f then
+        f:close()
+        return true
+      end
+    end,
+    isdir=function(name)
+      print("you need to load lfs")
+      return false
+    end
+  }
+elseif not lfs.isfile then
+  local attributes=lfs.attributes
+  function lfs.isdir(name)
+    return attributes(name,"mode")=="directory"
+  end
+  function lfs.isfile(name)
+    return attributes(name,"mode")=="file"
+  end
+end
+local insert,concat=table.insert,table.concat
+local match,find,gmatch=string.match,string.find,string.gmatch
+local lpegmatch=lpeg.match
+local getcurrentdir,attributes=lfs.currentdir,lfs.attributes
+local checkedsplit=string.checkedsplit
+local P,R,S,C,Cs,Cp,Cc,Ct=lpeg.P,lpeg.R,lpeg.S,lpeg.C,lpeg.Cs,lpeg.Cp,lpeg.Cc,lpeg.Ct
+local colon=P(":")
+local period=P(".")
+local periods=P("..")
+local fwslash=P("/")
+local bwslash=P("\\")
+local slashes=S("\\/")
+local noperiod=1-period
+local noslashes=1-slashes
+local name=noperiod^1
+local suffix=period/""*(1-period-slashes)^1*-1
+local pattern=C((1-(slashes^1*noslashes^1*-1))^1)*P(1) 
+local function pathpart(name,default)
+  return name and lpegmatch(pattern,name) or default or ""
+end
+local pattern=(noslashes^0*slashes)^1*C(noslashes^1)*-1
+local function basename(name)
+  return name and lpegmatch(pattern,name) or name
+end
+local pattern=(noslashes^0*slashes^1)^0*Cs((1-suffix)^1)*suffix^0
+local function nameonly(name)
+  return name and lpegmatch(pattern,name) or name
+end
+local pattern=(noslashes^0*slashes)^0*(noperiod^1*period)^1*C(noperiod^1)*-1
+local function suffixonly(name)
+  return name and lpegmatch(pattern,name) or ""
+end
+local pattern=(noslashes^0*slashes)^0*noperiod^1*((period*C(noperiod^1))^1)*-1+Cc("")
+local function suffixesonly(name)
+  if name then
+    return lpegmatch(pattern,name)
+  else
+    return ""
+  end
+end
+file.pathpart=pathpart
+file.basename=basename
+file.nameonly=nameonly
+file.suffixonly=suffixonly
+file.suffix=suffixonly
+file.suffixesonly=suffixesonly
+file.suffixes=suffixesonly
+file.dirname=pathpart  
+file.extname=suffixonly
+local drive=C(R("az","AZ"))*colon
+local path=C((noslashes^0*slashes)^0)
+local suffix=period*C(P(1-period)^0*P(-1))
+local base=C((1-suffix)^0)
+local rest=C(P(1)^0)
+drive=drive+Cc("")
+path=path+Cc("")
+base=base+Cc("")
+suffix=suffix+Cc("")
+local pattern_a=drive*path*base*suffix
+local pattern_b=path*base*suffix
+local pattern_c=C(drive*path)*C(base*suffix) 
+local pattern_d=path*rest
+function file.splitname(str,splitdrive)
+  if not str then
+  elseif splitdrive then
+    return lpegmatch(pattern_a,str) 
+  else
+    return lpegmatch(pattern_b,str) 
+  end
+end
+function file.splitbase(str)
+  if str then
+    return lpegmatch(pattern_d,str) 
+  else
+    return "",str 
+  end
+end
+function file.nametotable(str,splitdrive)
+  if str then
+    local path,drive,subpath,name,base,suffix=lpegmatch(pattern_c,str)
+    if splitdrive then
+      return {
+        path=path,
+        drive=drive,
+        subpath=subpath,
+        name=name,
+        base=base,
+        suffix=suffix,
+      }
+    else
+      return {
+        path=path,
+        name=name,
+        base=base,
+        suffix=suffix,
+      }
+    end
+  end
+end
+local pattern=Cs(((period*(1-period-slashes)^1*-1)/""+1)^1)
+function file.removesuffix(name)
+  return name and lpegmatch(pattern,name)
+end
+local suffix=period/""*(1-period-slashes)^1*-1
+local pattern=Cs((noslashes^0*slashes^1)^0*((1-suffix)^1))*Cs(suffix)
+function file.addsuffix(filename,suffix,criterium)
+  if not filename or not suffix or suffix=="" then
+    return filename
+  elseif criterium==true then
+    return filename.."."..suffix
+  elseif not criterium then
+    local n,s=lpegmatch(pattern,filename)
+    if not s or s=="" then
+      return filename.."."..suffix
+    else
+      return filename
+    end
+  else
+    local n,s=lpegmatch(pattern,filename)
+    if s and s~="" then
+      local t=type(criterium)
+      if t=="table" then
+        for i=1,#criterium do
+          if s==criterium[i] then
+            return filename
+          end
+        end
+      elseif t=="string" then
+        if s==criterium then
+          return filename
+        end
+      end
+    end
+    return (n or filename).."."..suffix
+  end
+end
+local suffix=period*(1-period-slashes)^1*-1
+local pattern=Cs((1-suffix)^0)
+function file.replacesuffix(name,suffix)
+  if name and suffix and suffix~="" then
+    return lpegmatch(pattern,name).."."..suffix
+  else
+    return name
+  end
+end
+local reslasher=lpeg.replacer(P("\\"),"/")
+function file.reslash(str)
+  return str and lpegmatch(reslasher,str)
+end
+function file.is_writable(name)
+  if not name then
+  elseif lfs.isdir(name) then
+    name=name.."/m_t_x_t_e_s_t.tmp"
+    local f=io.open(name,"wb")
+    if f then
+      f:close()
+      os.remove(name)
+      return true
+    end
+  elseif lfs.isfile(name) then
+    local f=io.open(name,"ab")
+    if f then
+      f:close()
+      return true
+    end
+  else
+    local f=io.open(name,"ab")
+    if f then
+      f:close()
+      os.remove(name)
+      return true
+    end
+  end
+  return false
+end
+local readable=P("r")*Cc(true)
+function file.is_readable(name)
+  if name then
+    local a=attributes(name)
+    return a and lpegmatch(readable,a.permissions) or false
+  else
+    return false
+  end
+end
+file.isreadable=file.is_readable 
+file.iswritable=file.is_writable 
+function file.size(name)
+  if name then
+    local a=attributes(name)
+    return a and a.size or 0
+  else
+    return 0
+  end
+end
+function file.splitpath(str,separator) 
+  return str and checkedsplit(lpegmatch(reslasher,str),separator or io.pathseparator)
+end
+function file.joinpath(tab,separator) 
+  return tab and concat(tab,separator or io.pathseparator) 
+end
+local someslash=S("\\/")
+local stripper=Cs(P(fwslash)^0/""*reslasher)
+local isnetwork=someslash*someslash*(1-someslash)+(1-fwslash-colon)^1*colon
+local isroot=fwslash^1*-1
+local hasroot=fwslash^1
+local reslasher=lpeg.replacer(S("\\/"),"/")
+local deslasher=lpeg.replacer(S("\\/")^1,"/")
+function file.join(...)
+  local lst={... }
+  local one=lst[1]
+  if lpegmatch(isnetwork,one) then
+    local one=lpegmatch(reslasher,one)
+    local two=lpegmatch(deslasher,concat(lst,"/",2))
+    if lpegmatch(hasroot,two) then
+      return one..two
+    else
+      return one.."/"..two
+    end
+  elseif lpegmatch(isroot,one) then
+    local two=lpegmatch(deslasher,concat(lst,"/",2))
+    if lpegmatch(hasroot,two) then
+      return two
+    else
+      return "/"..two
+    end
+  elseif one=="" then
+    return lpegmatch(stripper,concat(lst,"/",2))
+  else
+    return lpegmatch(deslasher,concat(lst,"/"))
+  end
+end
+local drivespec=R("az","AZ")^1*colon
+local anchors=fwslash+drivespec
+local untouched=periods+(1-period)^1*P(-1)
+local mswindrive=Cs(drivespec*(bwslash/"/"+fwslash)^0)
+local mswinuncpath=(bwslash+fwslash)*(bwslash+fwslash)*Cc("//")
+local splitstarter=(mswindrive+mswinuncpath+Cc(false))*Ct(lpeg.splitat(S("/\\")^1))
+local absolute=fwslash
+function file.collapsepath(str,anchor) 
+  if not str then
+    return
+  end
+  if anchor==true and not lpegmatch(anchors,str) then
+    str=getcurrentdir().."/"..str
+  end
+  if str=="" or str=="." then
+    return "."
+  elseif lpegmatch(untouched,str) then
+    return lpegmatch(reslasher,str)
+  end
+  local starter,oldelements=lpegmatch(splitstarter,str)
+  local newelements={}
+  local i=#oldelements
+  while i>0 do
+    local element=oldelements[i]
+    if element=='.' then
+    elseif element=='..' then
+      local n=i-1
+      while n>0 do
+        local element=oldelements[n]
+        if element~='..' and element~='.' then
+          oldelements[n]='.'
+          break
+        else
+          n=n-1
+        end
+       end
+      if n<1 then
+        insert(newelements,1,'..')
+      end
+    elseif element~="" then
+      insert(newelements,1,element)
+    end
+    i=i-1
+  end
+  if #newelements==0 then
+    return starter or "."
+  elseif starter then
+    return starter..concat(newelements,'/')
+  elseif lpegmatch(absolute,str) then
+    return "/"..concat(newelements,'/')
+  else
+    newelements=concat(newelements,'/')
+    if anchor=="." and find(str,"^%./") then
+      return "./"..newelements
+    else
+      return newelements
+    end
+  end
+end
+local validchars=R("az","09","AZ","--","..")
+local pattern_a=lpeg.replacer(1-validchars)
+local pattern_a=Cs((validchars+P(1)/"-")^1)
+local whatever=P("-")^0/""
+local pattern_b=Cs(whatever*(1-whatever*-1)^1)
+function file.robustname(str,strict)
+  if str then
+    str=lpegmatch(pattern_a,str) or str
+    if strict then
+      return lpegmatch(pattern_b,str) or str 
+    else
+      return str
+    end
+  end
+end
+file.readdata=io.loaddata
+file.savedata=io.savedata
+function file.copy(oldname,newname)
+  if oldname and newname then
+    local data=io.loaddata(oldname)
+    if data and data~="" then
+      file.savedata(newname,data)
+    end
+  end
+end
+local letter=R("az","AZ")+S("_-+")
+local separator=P("://")
+local qualified=period^0*fwslash+letter*colon+letter^1*separator+letter^1*fwslash
+local rootbased=fwslash+letter*colon
+lpeg.patterns.qualified=qualified
+lpeg.patterns.rootbased=rootbased
+function file.is_qualified_path(filename)
+  return filename and lpegmatch(qualified,filename)~=nil
+end
+function file.is_rootbased_path(filename)
+  return filename and lpegmatch(rootbased,filename)~=nil
+end
+function file.strip(name,dir)
+  if name then
+    local b,a=match(name,"^(.-)"..dir.."(.*)$")
+    return a~="" and a or name
+  end
+end
+function lfs.mkdirs(path)
+  local full=""
+  for sub in gmatch(path,"(/*[^\\/]+)") do 
+    full=full..sub
+    lfs.mkdir(full)
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-gzip"] = package.loaded["l-gzip"] or true
+
+-- original size: 1211, stripped down to: 1002
+
+if not modules then modules={} end modules ['l-gzip']={
+  version=1.001,
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+if not gzip then
+  return
+end
+local suffix,suffixes=file.suffix,file.suffixes
+function gzip.load(filename)
+  local f=io.open(filename,"rb")
+  if not f then
+  elseif suffix(filename)=="gz" then
+    f:close()
+    local g=gzip.open(filename,"rb")
+    if g then
+      local str=g:read("*all")
+      g:close()
+      return str
+    end
+  else
+    local str=f:read("*all")
+    f:close()
+    return str
+  end
+end
+function gzip.save(filename,data)
+  if suffix(filename)~="gz" then
+    filename=filename..".gz"
+  end
+  local f=io.open(filename,"wb")
+  if f then
+    local s=zlib.compress(data or "",9,nil,15+16)
+    f:write(s)
+    f:close()
+    return #s
+  end
+end
+function gzip.suffix(filename)
+  local suffix,extra=suffixes(filename)
+  local gzipped=extra=="gz"
+  return suffix,gzipped
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-md5"] = package.loaded["l-md5"] or true
+
+-- original size: 3760, stripped down to: 2088
+
+if not modules then modules={} end modules ['l-md5']={
+  version=1.001,
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+if not md5 then
+  md5=optionalrequire("md5")
+end
+if not md5 then
+  md5={
+    sum=function(str) print("error: md5 is not loaded (sum     ignored)") return str end,
+    sumhexa=function(str) print("error: md5 is not loaded (sumhexa ignored)") return str end,
+  }
+end
+local md5,file=md5,file
+local gsub,format,byte=string.gsub,string.format,string.byte
+local md5sum=md5.sum
+local function convert(str,fmt)
+  return (gsub(md5sum(str),".",function(chr) return format(fmt,byte(chr)) end))
+end
+if not md5.HEX then function md5.HEX(str) return convert(str,"%02X") end end
+if not md5.hex then function md5.hex(str) return convert(str,"%02x") end end
+if not md5.dec then function md5.dec(str) return convert(str,"%03i") end end
+function file.needsupdating(oldname,newname,threshold) 
+  local oldtime=lfs.attributes(oldname,"modification")
+  if oldtime then
+    local newtime=lfs.attributes(newname,"modification")
+    if not newtime then
+      return true 
+    elseif newtime>=oldtime then
+      return false 
+    elseif oldtime-newtime<(threshold or 1) then
+      return false 
+    else
+      return true 
+    end
+  else
+    return false 
+  end
+end
+file.needs_updating=file.needsupdating
+function file.syncmtimes(oldname,newname)
+  local oldtime=lfs.attributes(oldname,"modification")
+  if oldtime and lfs.isfile(newname) then
+    lfs.touch(newname,oldtime,oldtime)
+  end
+end
+function file.checksum(name)
+  if md5 then
+    local data=io.loaddata(name)
+    if data then
+      return md5.HEX(data)
+    end
+  end
+  return nil
+end
+function file.loadchecksum(name)
+  if md5 then
+    local data=io.loaddata(name..".md5")
+    return data and (gsub(data,"%s",""))
+  end
+  return nil
+end
+function file.savechecksum(name,checksum)
+  if not checksum then checksum=file.checksum(name) end
+  if checksum then
+    io.savedata(name..".md5",checksum)
+    return checksum
+  end
+  return nil
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-url"] = package.loaded["l-url"] or true
+
+-- original size: 12292, stripped down to: 5585
+
+if not modules then modules={} end modules ['l-url']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local char,format,byte=string.char,string.format,string.byte
+local concat=table.concat
+local tonumber,type=tonumber,type
+local P,C,R,S,Cs,Cc,Ct,Cf,Cg,V=lpeg.P,lpeg.C,lpeg.R,lpeg.S,lpeg.Cs,lpeg.Cc,lpeg.Ct,lpeg.Cf,lpeg.Cg,lpeg.V
+local lpegmatch,lpegpatterns,replacer=lpeg.match,lpeg.patterns,lpeg.replacer
+url=url or {}
+local url=url
+local tochar=function(s) return char(tonumber(s,16)) end
+local colon=P(":")
+local qmark=P("?")
+local hash=P("#")
+local slash=P("/")
+local percent=P("%")
+local endofstring=P(-1)
+local hexdigit=R("09","AF","af")
+local plus=P("+")
+local nothing=Cc("")
+local escapedchar=(percent*C(hexdigit*hexdigit))/tochar
+local escaped=(plus/" ")+escapedchar 
+local noslash=P("/")/""
+local schemestr=Cs((escaped+(1-colon-slash-qmark-hash))^2)
+local authoritystr=Cs((escaped+(1-   slash-qmark-hash))^0)
+local pathstr=Cs((escaped+(1-      qmark-hash))^0)
+local querystr=Cs(((1-         hash))^0)
+local fragmentstr=Cs((escaped+(1-      endofstring))^0)
+local scheme=schemestr*colon+nothing
+local authority=slash*slash*authoritystr+nothing
+local path=slash*pathstr+nothing
+local query=qmark*querystr+nothing
+local fragment=hash*fragmentstr+nothing
+local validurl=scheme*authority*path*query*fragment
+local parser=Ct(validurl)
+lpegpatterns.url=validurl
+lpegpatterns.urlsplitter=parser
+local escapes={}
+setmetatable(escapes,{ __index=function(t,k)
+  local v=format("%%%02X",byte(k))
+  t[k]=v
+  return v
+end })
+local escaper=Cs((R("09","AZ","az")^1+P(" ")/"%%20"+S("-./_")^1+P(1)/escapes)^0) 
+local unescaper=Cs((escapedchar+1)^0)
+local getcleaner=Cs((P("+++")/"%%2B"+P("+")/"%%20"+P(1))^1)
+lpegpatterns.urlunescaped=escapedchar
+lpegpatterns.urlescaper=escaper
+lpegpatterns.urlunescaper=unescaper
+lpegpatterns.urlgetcleaner=getcleaner
+function url.unescapeget(str)
+  return lpegmatch(getcleaner,str)
+end
+local function split(str)
+  return (type(str)=="string" and lpegmatch(parser,str)) or str
+end
+local isscheme=schemestr*colon*slash*slash 
+local function hasscheme(str)
+  if str then
+    local scheme=lpegmatch(isscheme,str) 
+    return scheme~="" and scheme or false
+  else
+    return false
+  end
+end
+local rootletter=R("az","AZ")+S("_-+")
+local separator=P("://")
+local qualified=P(".")^0*P("/")+rootletter*P(":")+rootletter^1*separator+rootletter^1*P("/")
+local rootbased=P("/")+rootletter*P(":")
+local barswapper=replacer("|",":")
+local backslashswapper=replacer("\\","/")
+local equal=P("=")
+local amp=P("&")
+local key=Cs(((escapedchar+1)-equal      )^0)
+local value=Cs(((escapedchar+1)-amp -endofstring)^0)
+local splitquery=Cf (Ct("")*P { "sequence",
+  sequence=V("pair")*(amp*V("pair"))^0,
+  pair=Cg(key*equal*value),
+},rawset)
+local function hashed(str) 
+  if str=="" then
+    return {
+      scheme="invalid",
+      original=str,
+    }
+  end
+  local s=split(str)
+  local rawscheme=s[1]
+  local rawquery=s[4]
+  local somescheme=rawscheme~=""
+  local somequery=rawquery~=""
+  if not somescheme and not somequery then
+    s={
+      scheme="file",
+      authority="",
+      path=str,
+      query="",
+      fragment="",
+      original=str,
+      noscheme=true,
+      filename=str,
+    }
+  else 
+    local authority,path,filename=s[2],s[3]
+    if authority=="" then
+      filename=path
+    elseif path=="" then
+      filename=""
+    else
+      filename=authority.."/"..path
+    end
+    s={
+      scheme=rawscheme,
+      authority=authority,
+      path=path,
+      query=lpegmatch(unescaper,rawquery),
+      queries=lpegmatch(splitquery,rawquery),
+      fragment=s[5],
+      original=str,
+      noscheme=false,
+      filename=filename,
+    }
+  end
+  return s
+end
+url.split=split
+url.hasscheme=hasscheme
+url.hashed=hashed
+function url.addscheme(str,scheme) 
+  if hasscheme(str) then
+    return str
+  elseif not scheme then
+    return "file:///"..str
+  else
+    return scheme..":///"..str
+  end
+end
+function url.construct(hash) 
+  local fullurl,f={},0
+  local scheme,authority,path,query,fragment=hash.scheme,hash.authority,hash.path,hash.query,hash.fragment
+  if scheme and scheme~="" then
+    f=f+1;fullurl[f]=scheme.."://"
+  end
+  if authority and authority~="" then
+    f=f+1;fullurl[f]=authority
+  end
+  if path and path~="" then
+    f=f+1;fullurl[f]="/"..path
+  end
+  if query and query~="" then
+    f=f+1;fullurl[f]="?"..query
+  end
+  if fragment and fragment~="" then
+    f=f+1;fullurl[f]="#"..fragment
+  end
+  return lpegmatch(escaper,concat(fullurl))
+end
+local pattern=Cs(noslash*R("az","AZ")*(S(":|")/":")*noslash*P(1)^0)
+function url.filename(filename)
+  local spec=hashed(filename)
+  local path=spec.path
+  return (spec.scheme=="file" and path and lpegmatch(pattern,path)) or filename
+end
+local function escapestring(str)
+  return lpegmatch(escaper,str)
+end
+url.escape=escapestring
+function url.query(str)
+  if type(str)=="string" then
+    return lpegmatch(splitquery,str) or ""
+  else
+    return str
+  end
+end
+function url.toquery(data)
+  local td=type(data)
+  if td=="string" then
+    return #str and escape(data) or nil 
+  elseif td=="table" then
+    if next(data) then
+      local t={}
+      for k,v in next,data do
+        t[#t+1]=format("%s=%s",k,escapestring(v))
+      end
+      return concat(t,"&")
+    end
+  else
+  end
+end
+local pattern=Cs(noslash^0*(1-noslash*P(-1))^0)
+function url.barepath(path)
+  if not path or path=="" then
+    return ""
+  else
+    return lpegmatch(pattern,path)
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-dir"] = package.loaded["l-dir"] or true
+
+-- original size: 14229, stripped down to: 8740
+
+if not modules then modules={} end modules ['l-dir']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local type,select=type,select
+local find,gmatch,match,gsub=string.find,string.gmatch,string.match,string.gsub
+local concat,insert,remove,unpack=table.concat,table.insert,table.remove,table.unpack
+local lpegmatch=lpeg.match
+local P,S,R,C,Cc,Cs,Ct,Cv,V=lpeg.P,lpeg.S,lpeg.R,lpeg.C,lpeg.Cc,lpeg.Cs,lpeg.Ct,lpeg.Cv,lpeg.V
+dir=dir or {}
+local dir=dir
+local lfs=lfs
+local attributes=lfs.attributes
+local walkdir=lfs.dir
+local isdir=lfs.isdir
+local isfile=lfs.isfile
+local currentdir=lfs.currentdir
+local chdir=lfs.chdir
+local onwindows=os.type=="windows" or find(os.getenv("PATH"),";")
+if not isdir then
+  function isdir(name)
+    local a=attributes(name)
+    return a and a.mode=="directory"
+  end
+  lfs.isdir=isdir
+end
+if not isfile then
+  function isfile(name)
+    local a=attributes(name)
+    return a and a.mode=="file"
+  end
+  lfs.isfile=isfile
+end
+function dir.current()
+  return (gsub(currentdir(),"\\","/"))
+end
+local lfsisdir=isdir
+local function isdir(path)
+  path=gsub(path,"[/\\]+$","")
+  return lfsisdir(path)
+end
+lfs.isdir=isdir
+local function globpattern(path,patt,recurse,action)
+  if path=="/" then
+    path=path.."."
+  elseif not find(path,"/$") then
+    path=path..'/'
+  end
+  if isdir(path) then 
+    for name in walkdir(path) do 
+      local full=path..name
+      local mode=attributes(full,'mode')
+      if mode=='file' then
+        if find(full,patt) then
+          action(full)
+        end
+      elseif recurse and (mode=="directory") and (name~='.') and (name~="..") then
+        globpattern(full,patt,recurse,action)
+      end
+    end
+  end
+end
+dir.globpattern=globpattern
+local function collectpattern(path,patt,recurse,result)
+  local ok,scanner
+  result=result or {}
+  if path=="/" then
+    ok,scanner,first=xpcall(function() return walkdir(path..".") end,function() end) 
+  else
+    ok,scanner,first=xpcall(function() return walkdir(path)   end,function() end) 
+  end
+  if ok and type(scanner)=="function" then
+    if not find(path,"/$") then path=path..'/' end
+    for name in scanner,first do
+      local full=path..name
+      local attr=attributes(full)
+      local mode=attr.mode
+      if mode=='file' then
+        if find(full,patt) then
+          result[name]=attr
+        end
+      elseif recurse and (mode=="directory") and (name~='.') and (name~="..") then
+        attr.list=collectpattern(full,patt,recurse)
+        result[name]=attr
+      end
+    end
+  end
+  return result
+end
+dir.collectpattern=collectpattern
+local separator
+if onwindows then
+  local slash=S("/\\")/"/"
+  pattern=Ct {
+    [1]=(Cs(P(".")+slash^1)+Cs(R("az","AZ")*P(":")*slash^0)+Cc("./"))*V(2)*V(3),
+    [2]=Cs(((1-S("*?/\\"))^0*slash)^0),
+    [3]=Cs(P(1)^0)
+  }
+else 
+  pattern=Ct {
+    [1]=(C(P(".")+P("/")^1)+Cc("./"))*V(2)*V(3),
+    [2]=C(((1-S("*?/"))^0*P("/"))^0),
+    [3]=C(P(1)^0)
+  }
+end
+local filter=Cs ((
+  P("**")/".*"+P("*")/"[^/]*"+P("?")/"[^/]"+P(".")/"%%."+P("+")/"%%+"+P("-")/"%%-"+P(1)
+)^0 )
+local function glob(str,t)
+  if type(t)=="function" then
+    if type(str)=="table" then
+      for s=1,#str do
+        glob(str[s],t)
+      end
+    elseif isfile(str) then
+      t(str)
+    else
+      local split=lpegmatch(pattern,str) 
+      if split then
+        local root,path,base=split[1],split[2],split[3]
+        local recurse=find(base,"%*%*")
+        local start=root..path
+        local result=lpegmatch(filter,start..base)
+        globpattern(start,result,recurse,t)
+      end
+    end
+  else
+    if type(str)=="table" then
+      local t=t or {}
+      for s=1,#str do
+        glob(str[s],t)
+      end
+      return t
+    elseif isfile(str) then
+      if t then
+        t[#t+1]=str
+        return t
+      else
+        return { str }
+      end
+    else
+      local split=lpegmatch(pattern,str) 
+      if split then
+        local t=t or {}
+        local action=action or function(name) t[#t+1]=name end
+        local root,path,base=split[1],split[2],split[3]
+        local recurse=find(base,"%*%*")
+        local start=root..path
+        local result=lpegmatch(filter,start..base)
+        globpattern(start,result,recurse,action)
+        return t
+      else
+        return {}
+      end
+    end
+  end
+end
+dir.glob=glob
+local function globfiles(path,recurse,func,files) 
+  if type(func)=="string" then
+    local s=func
+    func=function(name) return find(name,s) end
+  end
+  files=files or {}
+  local noffiles=#files
+  for name in walkdir(path) do
+    if find(name,"^%.") then
+    else
+      local mode=attributes(name,'mode')
+      if mode=="directory" then
+        if recurse then
+          globfiles(path.."/"..name,recurse,func,files)
+        end
+      elseif mode=="file" then
+        if not func or func(name) then
+          noffiles=noffiles+1
+          files[noffiles]=path.."/"..name
+        end
+      end
+    end
+  end
+  return files
+end
+dir.globfiles=globfiles
+function dir.ls(pattern)
+  return concat(glob(pattern),"\n")
+end
+local make_indeed=true 
+if onwindows then
+  function dir.mkdirs(...)
+    local str,pth="",""
+    for i=1,select("#",...) do
+      local s=select(i,...)
+      if s=="" then
+      elseif str=="" then
+        str=s
+      else
+        str=str.."/"..s
+      end
+    end
+    local drive=false
+    local first,middle,last=match(str,"^(//)(//*)(.*)$")
+    if first then
+    else
+      first,last=match(str,"^(//)/*(.-)$")
+      if first then
+        middle,last=match(str,"([^/]+)/+(.-)$")
+        if middle then
+          pth="//"..middle
+        else
+          pth="//"..last
+          last=""
+        end
+      else
+        first,middle,last=match(str,"^([a-zA-Z]:)(/*)(.-)$")
+        if first then
+          pth,drive=first..middle,true
+        else
+          middle,last=match(str,"^(/*)(.-)$")
+          if not middle then
+            last=str
+          end
+        end
+      end
+    end
+    for s in gmatch(last,"[^/]+") do
+      if pth=="" then
+        pth=s
+      elseif drive then
+        pth,drive=pth..s,false
+      else
+        pth=pth.."/"..s
+      end
+      if make_indeed and not isdir(pth) then
+        lfs.mkdir(pth)
+      end
+    end
+    return pth,(isdir(pth)==true)
+  end
+else
+  function dir.mkdirs(...)
+    local str,pth="",""
+    for i=1,select("#",...) do
+      local s=select(i,...)
+      if s and s~="" then 
+        if str~="" then
+          str=str.."/"..s
+        else
+          str=s
+        end
+      end
+    end
+    str=gsub(str,"/+","/")
+    if find(str,"^/") then
+      pth="/"
+      for s in gmatch(str,"[^/]+") do
+        local first=(pth=="/")
+        if first then
+          pth=pth..s
+        else
+          pth=pth.."/"..s
+        end
+        if make_indeed and not first and not isdir(pth) then
+          lfs.mkdir(pth)
+        end
+      end
+    else
+      pth="."
+      for s in gmatch(str,"[^/]+") do
+        pth=pth.."/"..s
+        if make_indeed and not isdir(pth) then
+          lfs.mkdir(pth)
+        end
+      end
+    end
+    return pth,(isdir(pth)==true)
+  end
+end
+dir.makedirs=dir.mkdirs
+if onwindows then
+  function dir.expandname(str) 
+    local first,nothing,last=match(str,"^(//)(//*)(.*)$")
+    if first then
+      first=dir.current().."/" 
+    end
+    if not first then
+      first,last=match(str,"^(//)/*(.*)$")
+    end
+    if not first then
+      first,last=match(str,"^([a-zA-Z]:)(.*)$")
+      if first and not find(last,"^/") then
+        local d=currentdir()
+        if chdir(first) then
+          first=dir.current()
+        end
+        chdir(d)
+      end
+    end
+    if not first then
+      first,last=dir.current(),str
+    end
+    last=gsub(last,"//","/")
+    last=gsub(last,"/%./","/")
+    last=gsub(last,"^/*","")
+    first=gsub(first,"/*$","")
+    if last=="" or last=="." then
+      return first
+    else
+      return first.."/"..last
+    end
+  end
+else
+  function dir.expandname(str) 
+    if not find(str,"^/") then
+      str=currentdir().."/"..str
+    end
+    str=gsub(str,"//","/")
+    str=gsub(str,"/%./","/")
+    str=gsub(str,"(.)/%.$","%1")
+    return str
+  end
+end
+file.expandname=dir.expandname 
+local stack={}
+function dir.push(newdir)
+  insert(stack,currentdir())
+  if newdir and newdir~="" then
+    chdir(newdir)
+  end
+end
+function dir.pop()
+  local d=remove(stack)
+  if d then
+    chdir(d)
+  end
+  return d
+end
+local function found(...) 
+  for i=1,select("#",...) do
+    local path=select(i,...)
+    local kind=type(path)
+    if kind=="string" then
+      if isdir(path) then
+        return path
+      end
+    elseif kind=="table" then
+      local path=found(unpack(path))
+      if path then
+        return path
+      end
+    end
+  end
+end
+dir.found=found
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-boolean"] = package.loaded["l-boolean"] or true
+
+-- original size: 1809, stripped down to: 1527
+
+if not modules then modules={} end modules ['l-boolean']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local type,tonumber=type,tonumber
+boolean=boolean or {}
+local boolean=boolean
+function boolean.tonumber(b)
+  if b then return 1 else return 0 end 
+end
+function toboolean(str,tolerant) 
+  if str==nil then
+    return false
+  elseif str==false then
+    return false
+  elseif str==true then
+    return true
+  elseif str=="true" then
+    return true
+  elseif str=="false" then
+    return false
+  elseif not tolerant then
+    return false
+  elseif str==0 then
+    return false
+  elseif (tonumber(str) or 0)>0 then
+    return true
+  else
+    return str=="yes" or str=="on" or str=="t"
+  end
+end
+string.toboolean=toboolean
+function string.booleanstring(str)
+  if str=="0" then
+    return false
+  elseif str=="1" then
+    return true
+  elseif str=="" then
+    return false
+  elseif str=="false" then
+    return false
+  elseif str=="true" then
+    return true
+  elseif (tonumber(str) or 0)>0 then
+    return true
+  else
+    return str=="yes" or str=="on" or str=="t"
+  end
+end
+function string.is_boolean(str,default)
+  if type(str)=="string" then
+    if str=="true" or str=="yes" or str=="on" or str=="t" or str=="1" then
+      return true
+    elseif str=="false" or str=="no" or str=="off" or str=="f" or str=="0" then
+      return false
+    end
+  end
+  return default
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-unicode"] = package.loaded["l-unicode"] or true
+
+-- original size: 33473, stripped down to: 14938
+
+if not modules then modules={} end modules ['l-unicode']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+utf=utf or (unicode and unicode.utf8) or {}
+utf.characters=utf.characters or string.utfcharacters
+utf.values=utf.values   or string.utfvalues
+local type=type
+local char,byte,format,sub,gmatch=string.char,string.byte,string.format,string.sub,string.gmatch
+local concat=table.concat
+local P,C,R,Cs,Ct,Cmt,Cc,Carg,Cp=lpeg.P,lpeg.C,lpeg.R,lpeg.Cs,lpeg.Ct,lpeg.Cmt,lpeg.Cc,lpeg.Carg,lpeg.Cp
+local lpegmatch,patterns=lpeg.match,lpeg.patterns
+local bytepairs=string.bytepairs
+local finder=lpeg.finder
+local replacer=lpeg.replacer
+local utfvalues=utf.values
+local utfgmatch=utf.gmatch 
+local p_utftype=patterns.utftype
+local p_utfstricttype=patterns.utfstricttype
+local p_utfoffset=patterns.utfoffset
+local p_utf8char=patterns.utf8char
+local p_utf8byte=patterns.utf8byte
+local p_utfbom=patterns.utfbom
+local p_newline=patterns.newline
+local p_whitespace=patterns.whitespace
+if not unicode then
+  unicode={ utf=utf } 
+end
+if not utf.char then
+  local floor,char=math.floor,string.char
+  function utf.char(n)
+    if n<0x80 then
+      return char(n)
+    elseif n<0x800 then
+      return char(
+        0xC0+floor(n/0x40),
+        0x80+(n%0x40)
+      )
+    elseif n<0x10000 then
+      return char(
+        0xE0+floor(n/0x1000),
+        0x80+(floor(n/0x40)%0x40),
+        0x80+(n%0x40)
+      )
+    elseif n<0x200000 then
+      return char(
+        0xF0+floor(n/0x40000),
+        0x80+(floor(n/0x1000)%0x40),
+        0x80+(floor(n/0x40)%0x40),
+        0x80+(n%0x40)
+      )
+    else
+      return ""
+    end
+  end
+end
+if not utf.byte then
+  local utf8byte=patterns.utf8byte
+  function utf.byte(c)
+    return lpegmatch(utf8byte,c)
+  end
+end
+local utfchar,utfbyte=utf.char,utf.byte
+function utf.filetype(data)
+  return data and lpegmatch(p_utftype,data) or "unknown"
+end
+local toentities=Cs (
+  (
+    patterns.utf8one+(
+        patterns.utf8two+patterns.utf8three+patterns.utf8four
+      )/function(s) local b=utfbyte(s) if b<127 then return s else return format("&#%X;",b) end end
+  )^0
+)
+patterns.toentities=toentities
+function utf.toentities(str)
+  return lpegmatch(toentities,str)
+end
+local one=P(1)
+local two=C(1)*C(1)
+local four=C(R(utfchar(0xD8),utfchar(0xFF)))*C(1)*C(1)*C(1)
+local pattern=P("\254\255")*Cs((
+          four/function(a,b,c,d)
+                local ab=0xFF*byte(a)+byte(b)
+                local cd=0xFF*byte(c)+byte(d)
+                return utfchar((ab-0xD800)*0x400+(cd-0xDC00)+0x10000)
+              end+two/function(a,b)
+                return utfchar(byte(a)*256+byte(b))
+              end+one
+        )^1 )+P("\255\254")*Cs((
+          four/function(b,a,d,c)
+                local ab=0xFF*byte(a)+byte(b)
+                local cd=0xFF*byte(c)+byte(d)
+                return utfchar((ab-0xD800)*0x400+(cd-0xDC00)+0x10000)
+              end+two/function(b,a)
+                return utfchar(byte(a)*256+byte(b))
+              end+one
+        )^1 )
+function string.toutf(s) 
+  return lpegmatch(pattern,s) or s 
+end
+local validatedutf=Cs (
+  (
+    patterns.utf8one+patterns.utf8two+patterns.utf8three+patterns.utf8four+P(1)/"�"
+  )^0
+)
+patterns.validatedutf=validatedutf
+function utf.is_valid(str)
+  return type(str)=="string" and lpegmatch(validatedutf,str) or false
+end
+if not utf.len then
+  local n,f=0,1
+  local utfcharcounter=patterns.utfbom^-1*Cmt (
+    Cc(1)*patterns.utf8one^1+Cc(2)*patterns.utf8two^1+Cc(3)*patterns.utf8three^1+Cc(4)*patterns.utf8four^1,
+    function(_,t,d) 
+      n=n+(t-f)/d
+      f=t
+      return true
+    end
+  )^0
+  function utf.len(str)
+    n,f=0,1
+    lpegmatch(utfcharcounter,str or "")
+    return n
+  end
+end
+utf.length=utf.len
+if not utf.sub then
+  local utflength=utf.length
+  local b,e,n,first,last=0,0,0,0,0
+  local function slide_zero(s,p)
+    n=n+1
+    if n>=last then
+      e=p-1
+    else
+      return p
+    end
+  end
+  local function slide_one(s,p)
+    n=n+1
+    if n==first then
+      b=p
+    end
+    if n>=last then
+      e=p-1
+    else
+      return p
+    end
+  end
+  local function slide_two(s,p)
+    n=n+1
+    if n==first then
+      b=p
+    else
+      return true
+    end
+  end
+  local pattern_zero=Cmt(p_utf8char,slide_zero)^0
+  local pattern_one=Cmt(p_utf8char,slide_one )^0
+  local pattern_two=Cmt(p_utf8char,slide_two )^0
+  function utf.sub(str,start,stop)
+    if not start then
+      return str
+    end
+    if start==0 then
+      start=1
+    end
+    if not stop then
+      if start<0 then
+        local l=utflength(str) 
+        start=l+start
+      else
+        start=start-1
+      end
+      b,n,first=0,0,start
+      lpegmatch(pattern_two,str)
+      if n>=first then
+        return sub(str,b)
+      else
+        return ""
+      end
+    end
+    if start<0 or stop<0 then
+      local l=utf.length(str)
+      if start<0 then
+        start=l+start
+        if start<=0 then
+          start=1
+        else
+          start=start+1
+        end
+      end
+      if stop<0 then
+        stop=l+stop
+        if stop==0 then
+          stop=1
+        else
+          stop=stop+1
+        end
+      end
+    end
+    if start>stop then
+      return ""
+    elseif start>1 then
+      b,e,n,first,last=0,0,0,start-1,stop
+      lpegmatch(pattern_one,str)
+      if n>=first and e==0 then
+        e=#str
+      end
+      return sub(str,b,e)
+    else
+      b,e,n,last=1,0,0,stop
+      lpegmatch(pattern_zero,str)
+      if e==0 then
+        e=#str
+      end
+      return sub(str,b,e)
+    end
+  end
+end
+function utf.remapper(mapping)
+  local pattern=Cs((p_utf8char/mapping)^0)
+  return function(str)
+    if not str or str=="" then
+      return ""
+    else
+      return lpegmatch(pattern,str)
+    end
+  end,pattern
+end
+function utf.replacer(t) 
+  local r=replacer(t,false,false,true)
+  return function(str)
+    return lpegmatch(r,str)
+  end
+end
+function utf.subtituter(t) 
+  local f=finder (t)
+  local r=replacer(t,false,false,true)
+  return function(str)
+    local i=lpegmatch(f,str)
+    if not i then
+      return str
+    elseif i>#str then
+      return str
+    else
+      return lpegmatch(r,str)
+    end
+  end
+end
+local utflinesplitter=p_utfbom^-1*lpeg.tsplitat(p_newline)
+local utfcharsplitter_ows=p_utfbom^-1*Ct(C(p_utf8char)^0)
+local utfcharsplitter_iws=p_utfbom^-1*Ct((p_whitespace^1+C(p_utf8char))^0)
+local utfcharsplitter_raw=Ct(C(p_utf8char)^0)
+patterns.utflinesplitter=utflinesplitter
+function utf.splitlines(str)
+  return lpegmatch(utflinesplitter,str or "")
+end
+function utf.split(str,ignorewhitespace) 
+  if ignorewhitespace then
+    return lpegmatch(utfcharsplitter_iws,str or "")
+  else
+    return lpegmatch(utfcharsplitter_ows,str or "")
+  end
+end
+function utf.totable(str) 
+  return lpegmatch(utfcharsplitter_raw,str)
+end
+function utf.magic(f) 
+  local str=f:read(4) or ""
+  local off=lpegmatch(p_utfoffset,str)
+  if off<4 then
+    f:seek('set',off)
+  end
+  return lpegmatch(p_utftype,str)
+end
+local utf16_to_utf8_be,utf16_to_utf8_le
+local utf32_to_utf8_be,utf32_to_utf8_le
+local utf_16_be_linesplitter=patterns.utfbom_16_be^-1*lpeg.tsplitat(patterns.utf_16_be_nl)
+local utf_16_le_linesplitter=patterns.utfbom_16_le^-1*lpeg.tsplitat(patterns.utf_16_le_nl)
+if bytepairs then
+  utf16_to_utf8_be=function(t)
+    if type(t)=="string" then
+      t=lpegmatch(utf_16_be_linesplitter,t)
+    end
+    local result={} 
+    for i=1,#t do
+      local r,more=0,0
+      for left,right in bytepairs(t[i]) do
+        if right then
+          local now=256*left+right
+          if more>0 then
+            now=(more-0xD800)*0x400+(now-0xDC00)+0x10000 
+            more=0
+            r=r+1
+            result[r]=utfchar(now)
+          elseif now>=0xD800 and now<=0xDBFF then
+            more=now
+          else
+            r=r+1
+            result[r]=utfchar(now)
+          end
+        end
+      end
+      t[i]=concat(result,"",1,r) 
+    end
+    return t
+  end
+  utf16_to_utf8_le=function(t)
+    if type(t)=="string" then
+      t=lpegmatch(utf_16_le_linesplitter,t)
+    end
+    local result={} 
+    for i=1,#t do
+      local r,more=0,0
+      for left,right in bytepairs(t[i]) do
+        if right then
+          local now=256*right+left
+          if more>0 then
+            now=(more-0xD800)*0x400+(now-0xDC00)+0x10000 
+            more=0
+            r=r+1
+            result[r]=utfchar(now)
+          elseif now>=0xD800 and now<=0xDBFF then
+            more=now
+          else
+            r=r+1
+            result[r]=utfchar(now)
+          end
+        end
+      end
+      t[i]=concat(result,"",1,r) 
+    end
+    return t
+  end
+  utf32_to_utf8_be=function(t)
+    if type(t)=="string" then
+      t=lpegmatch(utflinesplitter,t)
+    end
+    local result={} 
+    for i=1,#t do
+      local r,more=0,-1
+      for a,b in bytepairs(t[i]) do
+        if a and b then
+          if more<0 then
+            more=256*256*256*a+256*256*b
+          else
+            r=r+1
+            result[t]=utfchar(more+256*a+b)
+            more=-1
+          end
+        else
+          break
+        end
+      end
+      t[i]=concat(result,"",1,r)
+    end
+    return t
+  end
+  utf32_to_utf8_le=function(t)
+    if type(t)=="string" then
+      t=lpegmatch(utflinesplitter,t)
+    end
+    local result={} 
+    for i=1,#t do
+      local r,more=0,-1
+      for a,b in bytepairs(t[i]) do
+        if a and b then
+          if more<0 then
+            more=256*b+a
+          else
+            r=r+1
+            result[t]=utfchar(more+256*256*256*b+256*256*a)
+            more=-1
+          end
+        else
+          break
+        end
+      end
+      t[i]=concat(result,"",1,r)
+    end
+    return t
+  end
+else
+  utf16_to_utf8_be=function(t)
+    if type(t)=="string" then
+      t=lpegmatch(utf_16_be_linesplitter,t)
+    end
+    local result={} 
+    for i=1,#t do
+      local r,more=0,0
+      for left,right in gmatch(t[i],"(.)(.)") do
+        if left=="\000" then 
+          r=r+1
+          result[r]=utfchar(byte(right))
+        elseif right then
+          local now=256*byte(left)+byte(right)
+          if more>0 then
+            now=(more-0xD800)*0x400+(now-0xDC00)+0x10000 
+            more=0
+            r=r+1
+            result[r]=utfchar(now)
+          elseif now>=0xD800 and now<=0xDBFF then
+            more=now
+          else
+            r=r+1
+            result[r]=utfchar(now)
+          end
+        end
+      end
+      t[i]=concat(result,"",1,r) 
+    end
+    return t
+  end
+  utf16_to_utf8_le=function(t)
+    if type(t)=="string" then
+      t=lpegmatch(utf_16_le_linesplitter,t)
+    end
+    local result={} 
+    for i=1,#t do
+      local r,more=0,0
+      for left,right in gmatch(t[i],"(.)(.)") do
+        if right=="\000" then
+          r=r+1
+          result[r]=utfchar(byte(left))
+        elseif right then
+          local now=256*byte(right)+byte(left)
+          if more>0 then
+            now=(more-0xD800)*0x400+(now-0xDC00)+0x10000 
+            more=0
+            r=r+1
+            result[r]=utfchar(now)
+          elseif now>=0xD800 and now<=0xDBFF then
+            more=now
+          else
+            r=r+1
+            result[r]=utfchar(now)
+          end
+        end
+      end
+      t[i]=concat(result,"",1,r) 
+    end
+    return t
+  end
+  utf32_to_utf8_le=function() return {} end 
+  utf32_to_utf8_be=function() return {} end
+end
+utf.utf16_to_utf8_le=utf16_to_utf8_le
+utf.utf16_to_utf8_be=utf16_to_utf8_be
+utf.utf32_to_utf8_le=utf32_to_utf8_le
+utf.utf32_to_utf8_be=utf32_to_utf8_be
+function utf.utf8_to_utf8(t)
+  return type(t)=="string" and lpegmatch(utflinesplitter,t) or t
+end
+function utf.utf16_to_utf8(t,endian)
+  return endian and utf16_to_utf8_be(t) or utf16_to_utf8_le(t) or t
+end
+function utf.utf32_to_utf8(t,endian)
+  return endian and utf32_to_utf8_be(t) or utf32_to_utf8_le(t) or t
+end
+local function little(c)
+  local b=byte(c)
+  if b<0x10000 then
+    return char(b%256,b/256)
+  else
+    b=b-0x10000
+    local b1,b2=b/1024+0xD800,b%1024+0xDC00
+    return char(b1%256,b1/256,b2%256,b2/256)
+  end
+end
+local function big(c)
+  local b=byte(c)
+  if b<0x10000 then
+    return char(b/256,b%256)
+  else
+    b=b-0x10000
+    local b1,b2=b/1024+0xD800,b%1024+0xDC00
+    return char(b1/256,b1%256,b2/256,b2%256)
+  end
+end
+local _,l_remap=utf.remapper(little)
+local _,b_remap=utf.remapper(big)
+function utf.utf8_to_utf16_be(str,nobom)
+  if nobom then
+    return lpegmatch(b_remap,str)
+  else
+    return char(254,255)..lpegmatch(b_remap,str)
+  end
+end
+function utf.utf8_to_utf16_le(str,nobom)
+  if nobom then
+    return lpegmatch(l_remap,str)
+  else
+    return char(255,254)..lpegmatch(l_remap,str)
+  end
+end
+function utf.utf8_to_utf16(str,littleendian,nobom)
+  if littleendian then
+    return utf.utf8_to_utf16_le(str,nobom)
+  else
+    return utf.utf8_to_utf16_be(str,nobom)
+  end
+end
+local pattern=Cs (
+  (p_utf8byte/function(unicode     ) return format("0x%04X",unicode) end)*(p_utf8byte*Carg(1)/function(unicode,separator) return format("%s0x%04X",separator,unicode) end)^0
+)
+function utf.tocodes(str,separator)
+  return lpegmatch(pattern,str,1,separator or " ")
+end
+function utf.ustring(s)
+  return format("U+%05X",type(s)=="number" and s or utfbyte(s))
+end
+function utf.xstring(s)
+  return format("0x%05X",type(s)=="number" and s or utfbyte(s))
+end
+function utf.toeight(str)
+  if not str then
+    return nil
+  end
+  local utftype=lpegmatch(p_utfstricttype,str)
+  if utftype=="utf-8" then
+    return sub(str,4)
+  elseif utftype=="utf-16-le" then
+    return utf16_to_utf8_le(str)
+  elseif utftype=="utf-16-be" then
+    return utf16_to_utf8_ne(str)
+  else
+    return str
+  end
+end
+local p_nany=p_utf8char/""
+if utfgmatch then
+  function utf.count(str,what)
+    if type(what)=="string" then
+      local n=0
+      for _ in utfgmatch(str,what) do
+        n=n+1
+      end
+      return n
+    else 
+      return #lpegmatch(Cs((P(what)/" "+p_nany)^0),str)
+    end
+  end
+else
+  local cache={}
+  function utf.count(str,what)
+    if type(what)=="string" then
+      local p=cache[what]
+      if not p then
+        p=Cs((P(what)/" "+p_nany)^0)
+        cache[p]=p
+      end
+      return #lpegmatch(p,str)
+    else 
+      return #lpegmatch(Cs((P(what)/" "+p_nany)^0),str)
+    end
+  end
+end
+if not utf.characters then
+  function utf.characters(str)
+    return gmatch(str,".[\128-\191]*")
+  end
+  string.utfcharacters=utf.characters
+end
+if not utf.values then
+  local find=string.find
+  local dummy=function()
+  end
+  function utf.values(str)
+    local n=#str
+    if n==0 then
+      return dummy
+    elseif n==1 then
+      return function() return utfbyte(str) end
+    else
+      local p=1
+      return function()
+          local b,e=find(str,".[\128-\191]*",p)
+          if b then
+            p=e+1
+            return utfbyte(sub(str,b,e))
+          end
+      end
+    end
+  end
+  string.utfvalues=utf.values
+end
+function utf.chrlen(u) 
+  return
+    (u<0x80 and 1) or
+    (u<0xE0 and 2) or
+    (u<0xF0 and 3) or
+    (u<0xF8 and 4) or
+    (u<0xFC and 5) or
+    (u<0xFE and 6) or 0
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["l-math"] = package.loaded["l-math"] or true
+
+-- original size: 915, stripped down to: 836
+
+if not modules then modules={} end modules ['l-math']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local floor,sin,cos,tan=math.floor,math.sin,math.cos,math.tan
+if not math.round then
+  function math.round(x) return floor(x+0.5) end
+end
+if not math.div then
+  function math.div(n,m) return floor(n/m) end
+end
+if not math.mod then
+  function math.mod(n,m) return n%m end
+end
+local pipi=2*math.pi/360
+if not math.sind then
+  function math.sind(d) return sin(d*pipi) end
+  function math.cosd(d) return cos(d*pipi) end
+  function math.tand(d) return tan(d*pipi) end
+end
+if not math.odd then
+  function math.odd (n) return n%2~=0 end
+  function math.even(n) return n%2==0 end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["util-str"] = package.loaded["util-str"] or true
+
+-- original size: 29070, stripped down to: 15259
+
+if not modules then modules={} end modules ['util-str']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+utilities=utilities or {}
+utilities.strings=utilities.strings or {}
+local strings=utilities.strings
+local format,gsub,rep,sub=string.format,string.gsub,string.rep,string.sub
+local load,dump=load,string.dump
+local tonumber,type,tostring=tonumber,type,tostring
+local unpack,concat=table.unpack,table.concat
+local P,V,C,S,R,Ct,Cs,Cp,Carg,Cc=lpeg.P,lpeg.V,lpeg.C,lpeg.S,lpeg.R,lpeg.Ct,lpeg.Cs,lpeg.Cp,lpeg.Carg,lpeg.Cc
+local patterns,lpegmatch=lpeg.patterns,lpeg.match
+local utfchar,utfbyte=utf.char,utf.byte
+local loadstripped=function(str,shortcuts)
+  if shortcuts then
+    return load(dump(load(str),true),nil,nil,shortcuts)
+  else
+    return load(dump(load(str),true))
+  end
+end
+if not number then number={} end 
+local stripper=patterns.stripzeros
+local function points(n)
+  return (not n or n==0) and "0pt" or lpegmatch(stripper,format("%.5fpt",n/65536))
+end
+local function basepoints(n)
+  return (not n or n==0) and "0bp" or lpegmatch(stripper,format("%.5fbp",n*(7200/7227)/65536))
+end
+number.points=points
+number.basepoints=basepoints
+local rubish=patterns.spaceortab^0*patterns.newline
+local anyrubish=patterns.spaceortab+patterns.newline
+local anything=patterns.anything
+local stripped=(patterns.spaceortab^1/"")*patterns.newline
+local leading=rubish^0/""
+local trailing=(anyrubish^1*patterns.endofstring)/""
+local redundant=rubish^3/"\n"
+local pattern=Cs(leading*(trailing+redundant+stripped+anything)^0)
+function strings.collapsecrlf(str)
+  return lpegmatch(pattern,str)
+end
+local repeaters={} 
+function strings.newrepeater(str,offset)
+  offset=offset or 0
+  local s=repeaters[str]
+  if not s then
+    s={}
+    repeaters[str]=s
+  end
+  local t=s[offset]
+  if t then
+    return t
+  end
+  t={}
+  setmetatable(t,{ __index=function(t,k)
+    if not k then
+      return ""
+    end
+    local n=k+offset
+    local s=n>0 and rep(str,n) or ""
+    t[k]=s
+    return s
+  end })
+  s[offset]=t
+  return t
+end
+local extra,tab,start=0,0,4,0
+local nspaces=strings.newrepeater(" ")
+string.nspaces=nspaces
+local pattern=Carg(1)/function(t)
+    extra,tab,start=0,t or 7,1
+  end*Cs((
+   Cp()*patterns.tab/function(position)
+     local current=(position-start+1)+extra
+     local spaces=tab-(current-1)%tab
+     if spaces>0 then
+       extra=extra+spaces-1
+       return nspaces[spaces] 
+     else
+       return ""
+     end
+   end+patterns.newline*Cp()/function(position)
+     extra,start=0,position
+   end+patterns.anything
+ )^1)
+function strings.tabtospace(str,tab)
+  return lpegmatch(pattern,str,1,tab or 7)
+end
+function strings.striplong(str) 
+  str=gsub(str,"^%s*","")
+  str=gsub(str,"[\n\r]+ *","\n")
+  return str
+end
+function strings.nice(str)
+  str=gsub(str,"[:%-+_]+"," ") 
+  return str
+end
+local n=0
+local sequenced=table.sequenced
+function string.autodouble(s,sep)
+  if s==nil then
+    return '""'
+  end
+  local t=type(s)
+  if t=="number" then
+    return tostring(s) 
+  end
+  if t=="table" then
+    return ('"'..sequenced(s,sep or ",")..'"')
+  end
+  return ('"'..tostring(s)..'"')
+end
+function string.autosingle(s,sep)
+  if s==nil then
+    return "''"
+  end
+  local t=type(s)
+  if t=="number" then
+    return tostring(s) 
+  end
+  if t=="table" then
+    return ("'"..sequenced(s,sep or ",").."'")
+  end
+  return ("'"..tostring(s).."'")
+end
+local tracedchars={}
+string.tracedchars=tracedchars
+strings.tracers=tracedchars
+function string.tracedchar(b)
+  if type(b)=="number" then
+    return tracedchars[b] or (utfchar(b).." (U+"..format('%05X',b)..")")
+  else
+    local c=utfbyte(b)
+    return tracedchars[c] or (b.." (U+"..format('%05X',c)..")")
+  end
+end
+function number.signed(i)
+  if i>0 then
+    return "+",i
+  else
+    return "-",-i
+  end
+end
+local zero=P("0")^1/""
+local plus=P("+")/""
+local minus=P("-")
+local separator=S(".")
+local digit=R("09")
+local trailing=zero^1*#S("eE")
+local exponent=(S("eE")*(plus+Cs((minus*zero^0*P(-1))/"")+minus)*zero^0*(P(-1)*Cc("0")+P(1)^1))
+local pattern_a=Cs(minus^0*digit^1*(separator/""*trailing+separator*(trailing+digit)^0)*exponent)
+local pattern_b=Cs((exponent+P(1))^0)
+function number.sparseexponent(f,n)
+  if not n then
+    n=f
+    f="%e"
+  end
+  local tn=type(n)
+  if tn=="string" then 
+    local m=tonumber(n)
+    if m then
+      return lpegmatch((f=="%e" or f=="%E") and pattern_a or pattern_b,format(f,m))
+    end
+  elseif tn=="number" then
+    return lpegmatch((f=="%e" or f=="%E") and pattern_a or pattern_b,format(f,n))
+  end
+  return tostring(n)
+end
+local template=[[
+%s
+%s
+return function(%s) return %s end
+]]
+local environment={
+  lpeg=lpeg,
+  type=type,
+  tostring=tostring,
+  tonumber=tonumber,
+  format=string.format,
+  concat=table.concat,
+  signed=number.signed,
+  points=number.points,
+  basepoints=number.basepoints,
+  utfchar=utf.char,
+  utfbyte=utf.byte,
+  lpegmatch=lpeg.match,
+  nspaces=string.nspaces,
+  tracedchar=string.tracedchar,
+  autosingle=string.autosingle,
+  autodouble=string.autodouble,
+  sequenced=table.sequenced,
+  formattednumber=number.formatted,
+  sparseexponent=number.sparseexponent,
+}
+local preamble=""
+local arguments={ "a1" } 
+setmetatable(arguments,{ __index=function(t,k)
+    local v=t[k-1]..",a"..k
+    t[k]=v
+    return v
+  end
+})
+local prefix_any=C((S("+- .")+R("09"))^0)
+local prefix_tab=P("{")*C((1-P("}"))^0)*P("}")+C((1-R("az","AZ","09","%%"))^0)
+local format_s=function(f)
+  n=n+1
+  if f and f~="" then
+    return format("format('%%%ss',a%s)",f,n)
+  else 
+    return format("(a%s or '')",n) 
+  end
+end
+local format_S=function(f) 
+  n=n+1
+  if f and f~="" then
+    return format("format('%%%ss',tostring(a%s))",f,n)
+  else
+    return format("tostring(a%s)",n)
+  end
+end
+local format_q=function()
+  n=n+1
+  return format("(a%s and format('%%q',a%s) or '')",n,n) 
+end
+local format_Q=function() 
+  n=n+1
+  return format("format('%%q',tostring(a%s))",n)
+end
+local format_i=function(f)
+  n=n+1
+  if f and f~="" then
+    return format("format('%%%si',a%s)",f,n)
+  else
+    return format("format('%%i',a%s)",n)
+  end
+end
+local format_d=format_i
+local format_I=function(f)
+  n=n+1
+  return format("format('%%s%%%si',signed(a%s))",f,n)
+end
+local format_f=function(f)
+  n=n+1
+  return format("format('%%%sf',a%s)",f,n)
+end
+local format_g=function(f)
+  n=n+1
+  return format("format('%%%sg',a%s)",f,n)
+end
+local format_G=function(f)
+  n=n+1
+  return format("format('%%%sG',a%s)",f,n)
+end
+local format_e=function(f)
+  n=n+1
+  return format("format('%%%se',a%s)",f,n)
+end
+local format_E=function(f)
+  n=n+1
+  return format("format('%%%sE',a%s)",f,n)
+end
+local format_j=function(f)
+  n=n+1
+  return format("sparseexponent('%%%se',a%s)",f,n)
+end
+local format_J=function(f)
+  n=n+1
+  return format("sparseexponent('%%%sE',a%s)",f,n)
+end
+local format_x=function(f)
+  n=n+1
+  return format("format('%%%sx',a%s)",f,n)
+end
+local format_X=function(f)
+  n=n+1
+  return format("format('%%%sX',a%s)",f,n)
+end
+local format_o=function(f)
+  n=n+1
+  return format("format('%%%so',a%s)",f,n)
+end
+local format_c=function()
+  n=n+1
+  return format("utfchar(a%s)",n)
+end
+local format_C=function()
+  n=n+1
+  return format("tracedchar(a%s)",n)
+end
+local format_r=function(f)
+  n=n+1
+  return format("format('%%%s.0f',a%s)",f,n)
+end
+local format_h=function(f)
+  n=n+1
+  if f=="-" then
+    f=sub(f,2)
+    return format("format('%%%sx',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
+  else
+    return format("format('0x%%%sx',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
+  end
+end
+local format_H=function(f)
+  n=n+1
+  if f=="-" then
+    f=sub(f,2)
+    return format("format('%%%sX',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
+  else
+    return format("format('0x%%%sX',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
+  end
+end
+local format_u=function(f)
+  n=n+1
+  if f=="-" then
+    f=sub(f,2)
+    return format("format('%%%sx',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
+  else
+    return format("format('u+%%%sx',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
+  end
+end
+local format_U=function(f)
+  n=n+1
+  if f=="-" then
+    f=sub(f,2)
+    return format("format('%%%sX',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
+  else
+    return format("format('U+%%%sX',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
+  end
+end
+local format_p=function()
+  n=n+1
+  return format("points(a%s)",n)
+end
+local format_b=function()
+  n=n+1
+  return format("basepoints(a%s)",n)
+end
+local format_t=function(f)
+  n=n+1
+  if f and f~="" then
+    return format("concat(a%s,%q)",n,f)
+  else
+    return format("concat(a%s)",n)
+  end
+end
+local format_T=function(f)
+  n=n+1
+  if f and f~="" then
+    return format("sequenced(a%s,%q)",n,f)
+  else
+    return format("sequenced(a%s)",n)
+  end
+end
+local format_l=function()
+  n=n+1
+  return format("(a%s and 'true' or 'false')",n)
+end
+local format_L=function()
+  n=n+1
+  return format("(a%s and 'TRUE' or 'FALSE')",n)
+end
+local format_N=function() 
+  n=n+1
+  return format("tostring(tonumber(a%s) or a%s)",n,n)
+end
+local format_a=function(f)
+  n=n+1
+  if f and f~="" then
+    return format("autosingle(a%s,%q)",n,f)
+  else
+    return format("autosingle(a%s)",n)
+  end
+end
+local format_A=function(f)
+  n=n+1
+  if f and f~="" then
+    return format("autodouble(a%s,%q)",n,f)
+  else
+    return format("autodouble(a%s)",n)
+  end
+end
+local format_w=function(f) 
+  n=n+1
+  f=tonumber(f)
+  if f then 
+    return format("nspaces[%s+a%s]",f,n) 
+  else
+    return format("nspaces[a%s]",n) 
+  end
+end
+local format_W=function(f) 
+  return format("nspaces[%s]",tonumber(f) or 0)
+end
+local digit=patterns.digit
+local period=patterns.period
+local three=digit*digit*digit
+local splitter=Cs (
+  (((1-(three^1*period))^1+C(three))*(Carg(1)*three)^1+C((1-period)^1))*(P(1)/""*Carg(2))*C(2)
+)
+patterns.formattednumber=splitter
+function number.formatted(n,sep1,sep2)
+  local s=type(s)=="string" and n or format("%0.2f",n)
+  if sep1==true then
+    return lpegmatch(splitter,s,1,".",",")
+  elseif sep1=="." then
+    return lpegmatch(splitter,s,1,sep1,sep2 or ",")
+  elseif sep1=="," then
+    return lpegmatch(splitter,s,1,sep1,sep2 or ".")
+  else
+    return lpegmatch(splitter,s,1,sep1 or ",",sep2 or ".")
+  end
+end
+local format_m=function(f)
+  n=n+1
+  if not f or f=="" then
+    f=","
+  end
+  return format([[formattednumber(a%s,%q,".")]],n,f)
+end
+local format_M=function(f)
+  n=n+1
+  if not f or f=="" then
+    f="."
+  end
+  return format([[formattednumber(a%s,%q,",")]],n,f)
+end
+local format_z=function(f)
+  n=n+(tonumber(f) or 1)
+  return "''" 
+end
+local format_rest=function(s)
+  return format("%q",s) 
+end
+local format_extension=function(extensions,f,name)
+  local extension=extensions[name] or "tostring(%s)"
+  local f=tonumber(f) or 1
+  if f==0 then
+    return extension
+  elseif f==1 then
+    n=n+1
+    local a="a"..n
+    return format(extension,a,a) 
+  elseif f<0 then
+    local a="a"..(n+f+1)
+    return format(extension,a,a)
+  else
+    local t={}
+    for i=1,f do
+      n=n+1
+      t[#t+1]="a"..n
+    end
+    return format(extension,unpack(t))
+  end
+end
+local builder=Cs { "start",
+  start=(
+    (
+      P("%")/""*(
+        V("!") 
++V("s")+V("q")+V("i")+V("d")+V("f")+V("g")+V("G")+V("e")+V("E")+V("x")+V("X")+V("o")
++V("c")+V("C")+V("S") 
++V("Q") 
++V("N")
++V("r")+V("h")+V("H")+V("u")+V("U")+V("p")+V("b")+V("t")+V("T")+V("l")+V("L")+V("I")+V("w") 
++V("W") 
++V("a") 
++V("A") 
++V("j")+V("J") 
++V("m")+V("M") 
++V("z")
++V("*") 
+      )+V("*")
+    )*(P(-1)+Carg(1))
+  )^0,
+  ["s"]=(prefix_any*P("s"))/format_s,
+  ["q"]=(prefix_any*P("q"))/format_q,
+  ["i"]=(prefix_any*P("i"))/format_i,
+  ["d"]=(prefix_any*P("d"))/format_d,
+  ["f"]=(prefix_any*P("f"))/format_f,
+  ["g"]=(prefix_any*P("g"))/format_g,
+  ["G"]=(prefix_any*P("G"))/format_G,
+  ["e"]=(prefix_any*P("e"))/format_e,
+  ["E"]=(prefix_any*P("E"))/format_E,
+  ["x"]=(prefix_any*P("x"))/format_x,
+  ["X"]=(prefix_any*P("X"))/format_X,
+  ["o"]=(prefix_any*P("o"))/format_o,
+  ["S"]=(prefix_any*P("S"))/format_S,
+  ["Q"]=(prefix_any*P("Q"))/format_S,
+  ["N"]=(prefix_any*P("N"))/format_N,
+  ["c"]=(prefix_any*P("c"))/format_c,
+  ["C"]=(prefix_any*P("C"))/format_C,
+  ["r"]=(prefix_any*P("r"))/format_r,
+  ["h"]=(prefix_any*P("h"))/format_h,
+  ["H"]=(prefix_any*P("H"))/format_H,
+  ["u"]=(prefix_any*P("u"))/format_u,
+  ["U"]=(prefix_any*P("U"))/format_U,
+  ["p"]=(prefix_any*P("p"))/format_p,
+  ["b"]=(prefix_any*P("b"))/format_b,
+  ["t"]=(prefix_tab*P("t"))/format_t,
+  ["T"]=(prefix_tab*P("T"))/format_T,
+  ["l"]=(prefix_any*P("l"))/format_l,
+  ["L"]=(prefix_any*P("L"))/format_L,
+  ["I"]=(prefix_any*P("I"))/format_I,
+  ["w"]=(prefix_any*P("w"))/format_w,
+  ["W"]=(prefix_any*P("W"))/format_W,
+  ["j"]=(prefix_any*P("j"))/format_j,
+  ["J"]=(prefix_any*P("J"))/format_J,
+  ["m"]=(prefix_tab*P("m"))/format_m,
+  ["M"]=(prefix_tab*P("M"))/format_M,
+  ["z"]=(prefix_any*P("z"))/format_z,
+  ["a"]=(prefix_any*P("a"))/format_a,
+  ["A"]=(prefix_any*P("A"))/format_A,
+  ["*"]=Cs(((1-P("%"))^1+P("%%")/"%%")^1)/format_rest,
+  ["!"]=Carg(2)*prefix_any*P("!")*C((1-P("!"))^1)*P("!")/format_extension,
+}
+local direct=Cs (
+  P("%")*(S("+- .")+R("09"))^0*S("sqidfgGeExXo")*P(-1)/[[local format = string.format return function(str) return format("%0",str) end]]
+)
+local function make(t,str)
+  local f
+  local p
+  local p=lpegmatch(direct,str)
+  if p then
+    f=loadstripped(p)()
+  else
+    n=0
+    p=lpegmatch(builder,str,1,"..",t._extensions_) 
+    if n>0 then
+      p=format(template,preamble,t._preamble_,arguments[n],p)
+      f=loadstripped(p,t._environment_)() 
+    else
+      f=function() return str end
+    end
+  end
+  t[str]=f
+  return f
+end
+local function use(t,fmt,...)
+  return t[fmt](...)
+end
+strings.formatters={}
+function strings.formatters.new()
+  local e={} 
+  for k,v in next,environment do
+    e[k]=v
+  end
+  local t={ _extensions_={},_preamble_="",_environment_=e,_type_="formatter" }
+  setmetatable(t,{ __index=make,__call=use })
+  return t
+end
+local formatters=strings.formatters.new() 
+string.formatters=formatters 
+string.formatter=function(str,...) return formatters[str](...) end 
+local function add(t,name,template,preamble)
+  if type(t)=="table" and t._type_=="formatter" then
+    t._extensions_[name]=template or "%s"
+    if type(preamble)=="string" then
+      t._preamble_=preamble.."\n"..t._preamble_ 
+    elseif type(preamble)=="table" then
+      for k,v in next,preamble do
+        t._environment_[k]=v
+      end
+    end
+  end
+end
+strings.formatters.add=add
+patterns.xmlescape=Cs((P("<")/"&lt;"+P(">")/"&gt;"+P("&")/"&amp;"+P('"')/"&quot;"+P(1))^0)
+patterns.texescape=Cs((C(S("#$%\\{}"))/"\\%1"+P(1))^0)
+patterns.luaescape=Cs(((1-S('"\n'))^1+P('"')/'\\"'+P('\n')/'\\n"')^0) 
+patterns.luaquoted=Cs(Cc('"')*((1-S('"\n'))^1+P('"')/'\\"'+P('\n')/'\\n"')^0*Cc('"'))
+add(formatters,"xml",[[lpegmatch(xmlescape,%s)]],{ xmlescape=lpeg.patterns.xmlescape })
+add(formatters,"tex",[[lpegmatch(texescape,%s)]],{ texescape=lpeg.patterns.texescape })
+add(formatters,"lua",[[lpegmatch(luaescape,%s)]],{ luaescape=lpeg.patterns.luaescape })
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["util-tab"] = package.loaded["util-tab"] or true
+
+-- original size: 23952, stripped down to: 16092
+
+if not modules then modules={} end modules ['util-tab']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+utilities=utilities or {}
+utilities.tables=utilities.tables or {}
+local tables=utilities.tables
+local format,gmatch,gsub,sub=string.format,string.gmatch,string.gsub,string.sub
+local concat,insert,remove=table.concat,table.insert,table.remove
+local setmetatable,getmetatable,tonumber,tostring=setmetatable,getmetatable,tonumber,tostring
+local type,next,rawset,tonumber,tostring,load,select=type,next,rawset,tonumber,tostring,load,select
+local lpegmatch,P,Cs,Cc=lpeg.match,lpeg.P,lpeg.Cs,lpeg.Cc
+local sortedkeys,sortedpairs=table.sortedkeys,table.sortedpairs
+local formatters=string.formatters
+local utftoeight=utf.toeight
+local splitter=lpeg.tsplitat(".")
+function tables.definetable(target,nofirst,nolast) 
+  local composed,shortcut,t=nil,nil,{}
+  local snippets=lpegmatch(splitter,target)
+  for i=1,#snippets-(nolast and 1 or 0) do
+    local name=snippets[i]
+    if composed then
+      composed=shortcut.."."..name
+      shortcut=shortcut.."_"..name
+      t[#t+1]=formatters["local %s = %s if not %s then %s = { } %s = %s end"](shortcut,composed,shortcut,shortcut,composed,shortcut)
+    else
+      composed=name
+      shortcut=name
+      if not nofirst then
+        t[#t+1]=formatters["%s = %s or { }"](composed,composed)
+      end
+    end
+  end
+  if nolast then
+    composed=shortcut.."."..snippets[#snippets]
+  end
+  return concat(t,"\n"),composed
+end
+function tables.definedtable(...)
+  local t=_G
+  for i=1,select("#",...) do
+    local li=select(i,...)
+    local tl=t[li]
+    if not tl then
+      tl={}
+      t[li]=tl
+    end
+    t=tl
+  end
+  return t
+end
+function tables.accesstable(target,root)
+  local t=root or _G
+  for name in gmatch(target,"([^%.]+)") do
+    t=t[name]
+    if not t then
+      return
+    end
+  end
+  return t
+end
+function tables.migratetable(target,v,root)
+  local t=root or _G
+  local names=string.split(target,".")
+  for i=1,#names-1 do
+    local name=names[i]
+    t[name]=t[name] or {}
+    t=t[name]
+    if not t then
+      return
+    end
+  end
+  t[names[#names]]=v
+end
+function tables.removevalue(t,value) 
+  if value then
+    for i=1,#t do
+      if t[i]==value then
+        remove(t,i)
+      end
+    end
+  end
+end
+function tables.insertbeforevalue(t,value,extra)
+  for i=1,#t do
+    if t[i]==extra then
+      remove(t,i)
+    end
+  end
+  for i=1,#t do
+    if t[i]==value then
+      insert(t,i,extra)
+      return
+    end
+  end
+  insert(t,1,extra)
+end
+function tables.insertaftervalue(t,value,extra)
+  for i=1,#t do
+    if t[i]==extra then
+      remove(t,i)
+    end
+  end
+  for i=1,#t do
+    if t[i]==value then
+      insert(t,i+1,extra)
+      return
+    end
+  end
+  insert(t,#t+1,extra)
+end
+local escape=Cs(Cc('"')*((P('"')/'""'+P(1))^0)*Cc('"'))
+function table.tocsv(t,specification)
+  if t and #t>0 then
+    local result={}
+    local r={}
+    specification=specification or {}
+    local fields=specification.fields
+    if type(fields)~="string" then
+      fields=sortedkeys(t[1])
+    end
+    local separator=specification.separator or ","
+    if specification.preamble==true then
+      for f=1,#fields do
+        r[f]=lpegmatch(escape,tostring(fields[f]))
+      end
+      result[1]=concat(r,separator)
+    end
+    for i=1,#t do
+      local ti=t[i]
+      for f=1,#fields do
+        local field=ti[fields[f]]
+        if type(field)=="string" then
+          r[f]=lpegmatch(escape,field)
+        else
+          r[f]=tostring(field)
+        end
+      end
+      result[#result+1]=concat(r,separator)
+    end
+    return concat(result,"\n")
+  else
+    return ""
+  end
+end
+local nspaces=utilities.strings.newrepeater(" ")
+local function toxml(t,d,result,step)
+  for k,v in sortedpairs(t) do
+    local s=nspaces[d] 
+    local tk=type(k)
+    local tv=type(v)
+    if tv=="table" then
+      if tk=="number" then
+        result[#result+1]=formatters["%s<entry n='%s'>"](s,k)
+        toxml(v,d+step,result,step)
+        result[#result+1]=formatters["%s</entry>"](s,k)
+      else
+        result[#result+1]=formatters["%s<%s>"](s,k)
+        toxml(v,d+step,result,step)
+        result[#result+1]=formatters["%s</%s>"](s,k)
+      end
+    elseif tv=="string" then
+      if tk=="number" then
+        result[#result+1]=formatters["%s<entry n='%s'>%!xml!</entry>"](s,k,v,k)
+      else
+        result[#result+1]=formatters["%s<%s>%!xml!</%s>"](s,k,v,k)
+      end
+    elseif tk=="number" then
+      result[#result+1]=formatters["%s<entry n='%s'>%S</entry>"](s,k,v,k)
+    else
+      result[#result+1]=formatters["%s<%s>%S</%s>"](s,k,v,k)
+    end
+  end
+end
+function table.toxml(t,specification)
+  specification=specification or {}
+  local name=specification.name
+  local noroot=name==false
+  local result=(specification.nobanner or noroot) and {} or { "<?xml version='1.0' standalone='yes' ?>" }
+  local indent=specification.indent or 0
+  local spaces=specification.spaces or 1
+  if noroot then
+    toxml(t,indent,result,spaces)
+  else
+    toxml({ [name or "data"]=t },indent,result,spaces)
+  end
+  return concat(result,"\n")
+end
+function tables.encapsulate(core,capsule,protect)
+  if type(capsule)~="table" then
+    protect=true
+    capsule={}
+  end
+  for key,value in next,core do
+    if capsule[key] then
+      print(formatters["\ninvalid %s %a in %a"]("inheritance",key,core))
+      os.exit()
+    else
+      capsule[key]=value
+    end
+  end
+  if protect then
+    for key,value in next,core do
+      core[key]=nil
+    end
+    setmetatable(core,{
+      __index=capsule,
+      __newindex=function(t,key,value)
+        if capsule[key] then
+          print(formatters["\ninvalid %s %a' in %a"]("overload",key,core))
+          os.exit()
+        else
+          rawset(t,key,value)
+        end
+      end
+    } )
+  end
+end
+local f_hashed_string=formatters["[%q]=%q,"]
+local f_hashed_number=formatters["[%q]=%s,"]
+local f_hashed_boolean=formatters["[%q]=%l,"]
+local f_hashed_table=formatters["[%q]="]
+local f_indexed_string=formatters["[%s]=%q,"]
+local f_indexed_number=formatters["[%s]=%s,"]
+local f_indexed_boolean=formatters["[%s]=%l,"]
+local f_indexed_table=formatters["[%s]="]
+local f_ordered_string=formatters["%q,"]
+local f_ordered_number=formatters["%s,"]
+local f_ordered_boolean=formatters["%l,"]
+function table.fastserialize(t,prefix)
+  local r={ prefix or "return" }
+  local m=1
+  local function fastserialize(t,outer) 
+    local n=#t
+    m=m+1
+    r[m]="{"
+    if n>0 then
+      for i=0,n do
+        local v=t[i]
+        local tv=type(v)
+        if tv=="string" then
+          m=m+1 r[m]=f_ordered_string(v)
+        elseif tv=="number" then
+          m=m+1 r[m]=f_ordered_number(v)
+        elseif tv=="table" then
+          fastserialize(v)
+        elseif tv=="boolean" then
+          m=m+1 r[m]=f_ordered_boolean(v)
+        end
+      end
+    end
+    for k,v in next,t do
+      local tk=type(k)
+      if tk=="number" then
+        if k>n or k<0 then
+          local tv=type(v)
+          if tv=="string" then
+            m=m+1 r[m]=f_indexed_string(k,v)
+          elseif tv=="number" then
+            m=m+1 r[m]=f_indexed_number(k,v)
+          elseif tv=="table" then
+            m=m+1 r[m]=f_indexed_table(k)
+            fastserialize(v)
+          elseif tv=="boolean" then
+            m=m+1 r[m]=f_indexed_boolean(k,v)
+          end
+        end
+      else
+        local tv=type(v)
+        if tv=="string" then
+          m=m+1 r[m]=f_hashed_string(k,v)
+        elseif tv=="number" then
+          m=m+1 r[m]=f_hashed_number(k,v)
+        elseif tv=="table" then
+          m=m+1 r[m]=f_hashed_table(k)
+          fastserialize(v)
+        elseif tv=="boolean" then
+          m=m+1 r[m]=f_hashed_boolean(k,v)
+        end
+      end
+    end
+    m=m+1
+    if outer then
+      r[m]="}"
+    else
+      r[m]="},"
+    end
+    return r
+  end
+  return concat(fastserialize(t,true))
+end
+function table.deserialize(str)
+  if not str or str=="" then
+    return
+  end
+  local code=load(str)
+  if not code then
+    return
+  end
+  code=code()
+  if not code then
+    return
+  end
+  return code
+end
+function table.load(filename,loader)
+  if filename then
+    local t=(loader or io.loaddata)(filename)
+    if t and t~="" then
+      local t=utftoeight(t)
+      t=load(t)
+      if type(t)=="function" then
+        t=t()
+        if type(t)=="table" then
+          return t
+        end
+      end
+    end
+  end
+end
+function table.save(filename,t,n,...)
+  io.savedata(filename,table.serialize(t,n==nil and true or n,...)) 
+end
+local f_key_value=formatters["%s=%q"]
+local f_add_table=formatters[" {%t},\n"]
+local f_return_table=formatters["return {\n%t}"]
+local function slowdrop(t) 
+  local r={}
+  local l={}
+  for i=1,#t do
+    local ti=t[i]
+    local j=0
+    for k,v in next,ti do
+      j=j+1
+      l[j]=f_key_value(k,v)
+    end
+    r[i]=f_add_table(l)
+  end
+  return f_return_table(r)
+end
+local function fastdrop(t)
+  local r={ "return {\n" }
+  local m=1
+  for i=1,#t do
+    local ti=t[i]
+    m=m+1 r[m]=" {"
+    for k,v in next,ti do
+      m=m+1 r[m]=f_key_value(k,v)
+    end
+    m=m+1 r[m]="},\n"
+  end
+  m=m+1
+  r[m]="}"
+  return concat(r)
+end
+function table.drop(t,slow) 
+  if #t==0 then
+    return "return { }"
+  elseif slow==true then
+    return slowdrop(t) 
+  else
+    return fastdrop(t) 
+  end
+end
+function table.autokey(t,k)
+  local v={}
+  t[k]=v
+  return v
+end
+local selfmapper={ __index=function(t,k) t[k]=k return k end }
+function table.twowaymapper(t)
+  if not t then
+    t={}
+  else
+    for i=0,#t do
+      local ti=t[i]    
+      if ti then
+        local i=tostring(i)
+        t[i]=ti   
+        t[ti]=i    
+      end
+    end
+    t[""]=t[0] or ""
+  end
+  setmetatable(t,selfmapper)
+  return t
+end
+local f_start_key_idx=formatters["%w{"]
+local f_start_key_num=formatters["%w[%s]={"]
+local f_start_key_str=formatters["%w[%q]={"]
+local f_start_key_boo=formatters["%w[%l]={"]
+local f_start_key_nop=formatters["%w{"]
+local f_stop=formatters["%w},"]
+local f_key_num_value_num=formatters["%w[%s]=%s,"]
+local f_key_str_value_num=formatters["%w[%q]=%s,"]
+local f_key_boo_value_num=formatters["%w[%l]=%s,"]
+local f_key_num_value_str=formatters["%w[%s]=%q,"]
+local f_key_str_value_str=formatters["%w[%q]=%q,"]
+local f_key_boo_value_str=formatters["%w[%l]=%q,"]
+local f_key_num_value_boo=formatters["%w[%s]=%l,"]
+local f_key_str_value_boo=formatters["%w[%q]=%l,"]
+local f_key_boo_value_boo=formatters["%w[%l]=%l,"]
+local f_key_num_value_not=formatters["%w[%s]={},"]
+local f_key_str_value_not=formatters["%w[%q]={},"]
+local f_key_boo_value_not=formatters["%w[%l]={},"]
+local f_key_num_value_seq=formatters["%w[%s]={ %, t },"]
+local f_key_str_value_seq=formatters["%w[%q]={ %, t },"]
+local f_key_boo_value_seq=formatters["%w[%l]={ %, t },"]
+local f_val_num=formatters["%w%s,"]
+local f_val_str=formatters["%w%q,"]
+local f_val_boo=formatters["%w%l,"]
+local f_val_not=formatters["%w{},"]
+local f_val_seq=formatters["%w{ %, t },"]
+local f_table_return=formatters["return {"]
+local f_table_name=formatters["%s={"]
+local f_table_direct=formatters["{"]
+local f_table_entry=formatters["[%q]={"]
+local f_table_finish=formatters["}"]
+local spaces=utilities.strings.newrepeater(" ")
+local serialize=table.serialize
+function table.serialize(root,name,specification)
+  if type(specification)=="table" then
+    return serialize(root,name,specification) 
+  end
+  local t 
+  local n=1
+  local function simple_table(t)
+    if #t>0 then
+      local n=0
+      for _,v in next,t do
+        n=n+1
+        if type(v)=="table" then
+          return nil
+        end
+      end
+      if n==#t then
+        local tt={}
+        local nt=0
+        for i=1,#t do
+          local v=t[i]
+          local tv=type(v)
+          nt=nt+1
+          if tv=="number" then
+            tt[nt]=v
+          elseif tv=="string" then
+            tt[nt]=format("%q",v) 
+          elseif tv=="boolean" then
+            tt[nt]=v and "true" or "false"
+          else
+            return nil
+          end
+        end
+        return tt
+      end
+    end
+    return nil
+  end
+  local function do_serialize(root,name,depth,level,indexed)
+    if level>0 then
+      n=n+1
+      if indexed then
+        t[n]=f_start_key_idx(depth)
+      else
+        local tn=type(name)
+        if tn=="number" then
+          t[n]=f_start_key_num(depth,name)
+        elseif tn=="string" then
+          t[n]=f_start_key_str(depth,name)
+        elseif tn=="boolean" then
+          t[n]=f_start_key_boo(depth,name)
+        else
+          t[n]=f_start_key_nop(depth)
+        end
+      end
+      depth=depth+1
+    end
+    if root and next(root) then
+      local first=nil
+      local last=0
+      last=#root
+      for k=1,last do
+        if root[k]==nil then
+          last=k-1
+          break
+        end
+      end
+      if last>0 then
+        first=1
+      end
+      local sk=sortedkeys(root) 
+      for i=1,#sk do
+        local k=sk[i]
+        local v=root[k]
+        local tv=type(v)
+        local tk=type(k)
+        if first and tk=="number" and k>=first and k<=last then
+          if tv=="number" then
+            n=n+1 t[n]=f_val_num(depth,v)
+          elseif tv=="string" then
+            n=n+1 t[n]=f_val_str(depth,v)
+          elseif tv=="table" then
+            if not next(v) then
+              n=n+1 t[n]=f_val_not(depth)
+            else
+              local st=simple_table(v)
+              if st then
+                n=n+1 t[n]=f_val_seq(depth,st)
+              else
+                do_serialize(v,k,depth,level+1,true)
+              end
+            end
+          elseif tv=="boolean" then
+            n=n+1 t[n]=f_val_boo(depth,v)
+          end
+        elseif tv=="number" then
+          if tk=="number" then
+            n=n+1 t[n]=f_key_num_value_num(depth,k,v)
+          elseif tk=="string" then
+            n=n+1 t[n]=f_key_str_value_num(depth,k,v)
+          elseif tk=="boolean" then
+            n=n+1 t[n]=f_key_boo_value_num(depth,k,v)
+          end
+        elseif tv=="string" then
+          if tk=="number" then
+            n=n+1 t[n]=f_key_num_value_str(depth,k,v)
+          elseif tk=="string" then
+            n=n+1 t[n]=f_key_str_value_str(depth,k,v)
+          elseif tk=="boolean" then
+            n=n+1 t[n]=f_key_boo_value_str(depth,k,v)
+          end
+        elseif tv=="table" then
+          if not next(v) then
+            if tk=="number" then
+              n=n+1 t[n]=f_key_num_value_not(depth,k,v)
+            elseif tk=="string" then
+              n=n+1 t[n]=f_key_str_value_not(depth,k,v)
+            elseif tk=="boolean" then
+              n=n+1 t[n]=f_key_boo_value_not(depth,k,v)
+            end
+          else
+            local st=simple_table(v)
+            if not st then
+              do_serialize(v,k,depth,level+1)
+            elseif tk=="number" then
+              n=n+1 t[n]=f_key_num_value_seq(depth,k,st)
+            elseif tk=="string" then
+              n=n+1 t[n]=f_key_str_value_seq(depth,k,st)
+            elseif tk=="boolean" then
+              n=n+1 t[n]=f_key_boo_value_seq(depth,k,st)
+            end
+          end
+        elseif tv=="boolean" then
+          if tk=="number" then
+            n=n+1 t[n]=f_key_num_value_boo(depth,k,v)
+          elseif tk=="string" then
+            n=n+1 t[n]=f_key_str_value_boo(depth,k,v)
+          elseif tk=="boolean" then
+            n=n+1 t[n]=f_key_boo_value_boo(depth,k,v)
+          end
+        end
+      end
+    end
+    if level>0 then
+      n=n+1 t[n]=f_stop(depth-1)
+    end
+  end
+  local tname=type(name)
+  if tname=="string" then
+    if name=="return" then
+      t={ f_table_return() }
+    else
+      t={ f_table_name(name) }
+    end
+  elseif tname=="number" then
+    t={ f_table_entry(name) }
+  elseif tname=="boolean" then
+    if name then
+      t={ f_table_return() }
+    else
+      t={ f_table_direct() }
+    end
+  else
+    t={ f_table_name("t") }
+  end
+  if root then
+    if getmetatable(root) then 
+      local dummy=root._w_h_a_t_e_v_e_r_
+      root._w_h_a_t_e_v_e_r_=nil
+    end
+    if next(root) then
+      do_serialize(root,name,1,0)
+    end
+  end
+  n=n+1
+  t[n]=f_table_finish()
+  return concat(t,"\n")
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["util-sto"] = package.loaded["util-sto"] or true
+
+-- original size: 4172, stripped down to: 2953
+
+if not modules then modules={} end modules ['util-sto']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local setmetatable,getmetatable,type=setmetatable,getmetatable,type
+utilities=utilities or {}
+utilities.storage=utilities.storage or {}
+local storage=utilities.storage
+function storage.mark(t)
+  if not t then
+    print("\nfatal error: storage cannot be marked\n")
+    os.exit()
+    return
+  end
+  local m=getmetatable(t)
+  if not m then
+    m={}
+    setmetatable(t,m)
+  end
+  m.__storage__=true
+  return t
+end
+function storage.allocate(t)
+  t=t or {}
+  local m=getmetatable(t)
+  if not m then
+    m={}
+    setmetatable(t,m)
+  end
+  m.__storage__=true
+  return t
+end
+function storage.marked(t)
+  local m=getmetatable(t)
+  return m and m.__storage__
+end
+function storage.checked(t)
+  if not t then
+    report("\nfatal error: storage has not been allocated\n")
+    os.exit()
+    return
+  end
+  return t
+end
+function storage.setinitializer(data,initialize)
+  local m=getmetatable(data) or {}
+  m.__index=function(data,k)
+    m.__index=nil 
+    initialize()
+    return data[k]
+  end
+  setmetatable(data,m)
+end
+local keyisvalue={ __index=function(t,k)
+  t[k]=k
+  return k
+end }
+function storage.sparse(t)
+  t=t or {}
+  setmetatable(t,keyisvalue)
+  return t
+end
+local function f_empty ()              return "" end 
+local function f_self (t,k) t[k]=k        return k end
+local function f_table (t,k) local v={} t[k]=v return v end
+local function f_number(t,k) t[k]=0        return 0 end 
+local function f_ignore()                   end 
+local f_index={
+  ["empty"]=f_empty,
+  ["self"]=f_self,
+  ["table"]=f_table,
+  ["number"]=f_number,
+}
+local t_index={
+  ["empty"]={ __index=f_empty },
+  ["self"]={ __index=f_self  },
+  ["table"]={ __index=f_table },
+  ["number"]={ __index=f_number },
+}
+function table.setmetatableindex(t,f)
+  if type(t)~="table" then
+    f,t=t,{}
+  end
+  local m=getmetatable(t)
+  if m then
+    m.__index=f_index[f] or f
+  else
+    setmetatable(t,t_index[f] or { __index=f })
+  end
+  return t
+end
+local f_index={
+  ["ignore"]=f_ignore,
+}
+local t_index={
+  ["ignore"]={ __newindex=f_ignore },
+}
+function table.setmetatablenewindex(t,f)
+  if type(t)~="table" then
+    f,t=t,{}
+  end
+  local m=getmetatable(t)
+  if m then
+    m.__newindex=f_index[f] or f
+  else
+    setmetatable(t,t_index[f] or { __newindex=f })
+  end
+  return t
+end
+function table.setmetatablecall(t,f)
+  if type(t)~="table" then
+    f,t=t,{}
+  end
+  local m=getmetatable(t)
+  if m then
+    m.__call=f
+  else
+    setmetatable(t,{ __call=f })
+  end
+  return t
+end
+function table.setmetatablekey(t,key,value)
+  local m=getmetatable(t)
+  if not m then
+    m={}
+    setmetatable(t,m)
+  end
+  m[key]=value
+  return t
+end
+function table.getmetatablekey(t,key,value)
+  local m=getmetatable(t)
+  return m and m[key]
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["util-prs"] = package.loaded["util-prs"] or true
+
+-- original size: 19604, stripped down to: 13998
+
+if not modules then modules={} end modules ['util-prs']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local lpeg,table,string=lpeg,table,string
+local P,R,V,S,C,Ct,Cs,Carg,Cc,Cg,Cf,Cp=lpeg.P,lpeg.R,lpeg.V,lpeg.S,lpeg.C,lpeg.Ct,lpeg.Cs,lpeg.Carg,lpeg.Cc,lpeg.Cg,lpeg.Cf,lpeg.Cp
+local lpegmatch,lpegpatterns=lpeg.match,lpeg.patterns
+local concat,gmatch,find=table.concat,string.gmatch,string.find
+local tostring,type,next,rawset=tostring,type,next,rawset
+local mod,div=math.mod,math.div
+utilities=utilities or {}
+local parsers=utilities.parsers or {}
+utilities.parsers=parsers
+local patterns=parsers.patterns or {}
+parsers.patterns=patterns
+local setmetatableindex=table.setmetatableindex
+local sortedhash=table.sortedhash
+local digit=R("09")
+local space=P(' ')
+local equal=P("=")
+local comma=P(",")
+local lbrace=P("{")
+local rbrace=P("}")
+local lparent=P("(")
+local rparent=P(")")
+local period=S(".")
+local punctuation=S(".,:;")
+local spacer=lpegpatterns.spacer
+local whitespace=lpegpatterns.whitespace
+local newline=lpegpatterns.newline
+local anything=lpegpatterns.anything
+local endofstring=lpegpatterns.endofstring
+local nobrace=1-(lbrace+rbrace )
+local noparent=1-(lparent+rparent)
+local escape,left,right=P("\\"),P('{'),P('}')
+lpegpatterns.balanced=P {
+  [1]=((escape*(left+right))+(1-(left+right))+V(2))^0,
+  [2]=left*V(1)*right
+}
+local nestedbraces=P { lbrace*(nobrace+V(1))^0*rbrace }
+local nestedparents=P { lparent*(noparent+V(1))^0*rparent }
+local spaces=space^0
+local argument=Cs((lbrace/"")*((nobrace+nestedbraces)^0)*(rbrace/""))
+local content=(1-endofstring)^0
+lpegpatterns.nestedbraces=nestedbraces 
+lpegpatterns.nestedparents=nestedparents 
+lpegpatterns.nested=nestedbraces 
+lpegpatterns.argument=argument   
+lpegpatterns.content=content    
+local value=P(lbrace*C((nobrace+nestedbraces)^0)*rbrace)+C((nestedbraces+(1-comma))^0)
+local key=C((1-equal-comma)^1)
+local pattern_a=(space+comma)^0*(key*equal*value+key*C(""))
+local pattern_c=(space+comma)^0*(key*equal*value)
+local key=C((1-space-equal-comma)^1)
+local pattern_b=spaces*comma^0*spaces*(key*((spaces*equal*spaces*value)+C("")))
+local hash={}
+local function set(key,value)
+  hash[key]=value
+end
+local pattern_a_s=(pattern_a/set)^1
+local pattern_b_s=(pattern_b/set)^1
+local pattern_c_s=(pattern_c/set)^1
+patterns.settings_to_hash_a=pattern_a_s
+patterns.settings_to_hash_b=pattern_b_s
+patterns.settings_to_hash_c=pattern_c_s
+function parsers.make_settings_to_hash_pattern(set,how)
+  if type(str)=="table" then
+    return set
+  elseif how=="strict" then
+    return (pattern_c/set)^1
+  elseif how=="tolerant" then
+    return (pattern_b/set)^1
+  else
+    return (pattern_a/set)^1
+  end
+end
+function parsers.settings_to_hash(str,existing)
+  if type(str)=="table" then
+    if existing then
+      for k,v in next,str do
+        existing[k]=v
+      end
+      return exiting
+    else
+      return str
+    end
+  elseif str and str~="" then
+    hash=existing or {}
+    lpegmatch(pattern_a_s,str)
+    return hash
+  else
+    return {}
+  end
+end
+function parsers.settings_to_hash_tolerant(str,existing)
+  if type(str)=="table" then
+    if existing then
+      for k,v in next,str do
+        existing[k]=v
+      end
+      return exiting
+    else
+      return str
+    end
+  elseif str and str~="" then
+    hash=existing or {}
+    lpegmatch(pattern_b_s,str)
+    return hash
+  else
+    return {}
+  end
+end
+function parsers.settings_to_hash_strict(str,existing)
+  if type(str)=="table" then
+    if existing then
+      for k,v in next,str do
+        existing[k]=v
+      end
+      return exiting
+    else
+      return str
+    end
+  elseif str and str~="" then
+    hash=existing or {}
+    lpegmatch(pattern_c_s,str)
+    return next(hash) and hash
+  else
+    return nil
+  end
+end
+local separator=comma*space^0
+local value=P(lbrace*C((nobrace+nestedbraces)^0)*rbrace)+C((nestedbraces+(1-comma))^0)
+local pattern=spaces*Ct(value*(separator*value)^0)
+patterns.settings_to_array=pattern
+function parsers.settings_to_array(str,strict)
+  if type(str)=="table" then
+    return str
+  elseif not str or str=="" then
+    return {}
+  elseif strict then
+    if find(str,"{") then
+      return lpegmatch(pattern,str)
+    else
+      return { str }
+    end
+  elseif find(str,",") then
+    return lpegmatch(pattern,str)
+  else
+    return { str }
+  end
+end
+local separator=space^0*comma*space^0
+local value=P(lbrace*C((nobrace+nestedbraces)^0)*rbrace)+C((nestedbraces+(1-(space^0*(comma+P(-1)))))^0)
+local withvalue=Carg(1)*value/function(f,s) return f(s) end
+local pattern_a=spaces*Ct(value*(separator*value)^0)
+local pattern_b=spaces*withvalue*(separator*withvalue)^0
+function parsers.stripped_settings_to_array(str)
+  if not str or str=="" then
+    return {}
+  else
+    return lpegmatch(pattern_a,str)
+  end
+end
+function parsers.process_stripped_settings(str,action)
+  if not str or str=="" then
+    return {}
+  else
+    return lpegmatch(pattern_b,str,1,action)
+  end
+end
+local function set(t,v)
+  t[#t+1]=v
+end
+local value=P(Carg(1)*value)/set
+local pattern=value*(separator*value)^0*Carg(1)
+function parsers.add_settings_to_array(t,str)
+  return lpegmatch(pattern,str,nil,t)
+end
+function parsers.hash_to_string(h,separator,yes,no,strict,omit)
+  if h then
+    local t,tn,s={},0,table.sortedkeys(h)
+    omit=omit and table.tohash(omit)
+    for i=1,#s do
+      local key=s[i]
+      if not omit or not omit[key] then
+        local value=h[key]
+        if type(value)=="boolean" then
+          if yes and no then
+            if value then
+              tn=tn+1
+              t[tn]=key..'='..yes
+            elseif not strict then
+              tn=tn+1
+              t[tn]=key..'='..no
+            end
+          elseif value or not strict then
+            tn=tn+1
+            t[tn]=key..'='..tostring(value)
+          end
+        else
+          tn=tn+1
+          t[tn]=key..'='..value
+        end
+      end
+    end
+    return concat(t,separator or ",")
+  else
+    return ""
+  end
+end
+function parsers.array_to_string(a,separator)
+  if a then
+    return concat(a,separator or ",")
+  else
+    return ""
+  end
+end
+function parsers.settings_to_set(str,t) 
+  t=t or {}
+  for s in gmatch(str,"[^, ]+") do 
+    t[s]=true
+  end
+  return t
+end
+function parsers.simple_hash_to_string(h,separator)
+  local t,tn={},0
+  for k,v in sortedhash(h) do
+    if v then
+      tn=tn+1
+      t[tn]=k
+    end
+  end
+  return concat(t,separator or ",")
+end
+local str=C((1-whitespace-equal)^1)
+local setting=Cf(Carg(1)*(whitespace^0*Cg(str*whitespace^0*(equal*whitespace^0*str+Cc(""))))^1,rawset)
+local splitter=setting^1
+function utilities.parsers.options_to_hash(str,target)
+  return str and lpegmatch(splitter,str,1,target or {}) or {}
+end
+local value=P(lbrace*C((nobrace+nestedbraces)^0)*rbrace)+C(digit^1*lparent*(noparent+nestedparents)^1*rparent)+C((nestedbraces+(1-comma))^1)
+local pattern_a=spaces*Ct(value*(separator*value)^0)
+local function repeater(n,str)
+  if not n then
+    return str
+  else
+    local s=lpegmatch(pattern_a,str)
+    if n==1 then
+      return unpack(s)
+    else
+      local t,tn={},0
+      for i=1,n do
+        for j=1,#s do
+          tn=tn+1
+          t[tn]=s[j]
+        end
+      end
+      return unpack(t)
+    end
+  end
+end
+local value=P(lbrace*C((nobrace+nestedbraces)^0)*rbrace)+(C(digit^1)/tonumber*lparent*Cs((noparent+nestedparents)^1)*rparent)/repeater+C((nestedbraces+(1-comma))^1)
+local pattern_b=spaces*Ct(value*(separator*value)^0)
+function parsers.settings_to_array_with_repeat(str,expand) 
+  if expand then
+    return lpegmatch(pattern_b,str) or {}
+  else
+    return lpegmatch(pattern_a,str) or {}
+  end
+end
+local value=lbrace*C((nobrace+nestedbraces)^0)*rbrace
+local pattern=Ct((space+value)^0)
+function parsers.arguments_to_table(str)
+  return lpegmatch(pattern,str)
+end
+function parsers.getparameters(self,class,parentclass,settings)
+  local sc=self[class]
+  if not sc then
+    sc={}
+    self[class]=sc
+    if parentclass then
+      local sp=self[parentclass]
+      if not sp then
+        sp={}
+        self[parentclass]=sp
+      end
+      setmetatableindex(sc,sp)
+    end
+  end
+  parsers.settings_to_hash(settings,sc)
+end
+function parsers.listitem(str)
+  return gmatch(str,"[^, ]+")
+end
+local pattern=Cs { "start",
+  start=V("one")+V("two")+V("three"),
+  rest=(Cc(",")*V("thousand"))^0*(P(".")+endofstring)*anything^0,
+  thousand=digit*digit*digit,
+  one=digit*V("rest"),
+  two=digit*digit*V("rest"),
+  three=V("thousand")*V("rest"),
+}
+lpegpatterns.splitthousands=pattern 
+function parsers.splitthousands(str)
+  return lpegmatch(pattern,str) or str
+end
+local optionalwhitespace=whitespace^0
+lpegpatterns.words=Ct((Cs((1-punctuation-whitespace)^1)+anything)^1)
+lpegpatterns.sentences=Ct((optionalwhitespace*Cs((1-period)^0*period))^1)
+lpegpatterns.paragraphs=Ct((optionalwhitespace*Cs((whitespace^1*endofstring/""+1-(spacer^0*newline*newline))^1))^1)
+local dquote=P('"')
+local equal=P('=')
+local escape=P('\\')
+local separator=S(' ,')
+local key=C((1-equal)^1)
+local value=dquote*C((1-dquote-escape*dquote)^0)*dquote
+local pattern=Cf(Ct("")*(Cg(key*equal*value)*separator^0)^1,rawset)^0*P(-1)
+function parsers.keq_to_hash(str)
+  if str and str~="" then
+    return lpegmatch(pattern,str)
+  else
+    return {}
+  end
+end
+local defaultspecification={ separator=",",quote='"' }
+function parsers.csvsplitter(specification)
+  specification=specification and table.setmetatableindex(specification,defaultspecification) or defaultspecification
+  local separator=specification.separator
+  local quotechar=specification.quote
+  local separator=S(separator~="" and separator or ",")
+  local whatever=C((1-separator-newline)^0)
+  if quotechar and quotechar~="" then
+    local quotedata=nil
+    for chr in gmatch(quotechar,".") do
+      local quotechar=P(chr)
+      local quoteword=quotechar*C((1-quotechar)^0)*quotechar
+      if quotedata then
+        quotedata=quotedata+quoteword
+      else
+        quotedata=quoteword
+      end
+    end
+    whatever=quotedata+whatever
+  end
+  local parser=Ct((Ct(whatever*(separator*whatever)^0)*S("\n\r")^1)^0 )
+  return function(data)
+    return lpegmatch(parser,data)
+  end
+end
+function parsers.rfc4180splitter(specification)
+  specification=specification and table.setmetatableindex(specification,defaultspecification) or defaultspecification
+  local separator=specification.separator 
+  local quotechar=P(specification.quote) 
+  local dquotechar=quotechar*quotechar  
+/specification.quote
+  local separator=S(separator~="" and separator or ",")
+  local escaped=quotechar*Cs((dquotechar+(1-quotechar))^0)*quotechar
+  local non_escaped=C((1-quotechar-newline-separator)^1)
+  local field=escaped+non_escaped+Cc("")
+  local record=Ct(field*(separator*field)^1)
+  local headerline=record*Cp()
+  local wholeblob=Ct((newline^-1*record)^0)
+  return function(data,getheader)
+    if getheader then
+      local header,position=lpegmatch(headerline,data)
+      local data=lpegmatch(wholeblob,data,position)
+      return data,header
+    else
+      return lpegmatch(wholeblob,data)
+    end
+  end
+end
+local function ranger(first,last,n,action)
+  if not first then
+  elseif last==true then
+    for i=first,n or first do
+      action(i)
+    end
+  elseif last then
+    for i=first,last do
+      action(i)
+    end
+  else
+    action(first)
+  end
+end
+local cardinal=lpegpatterns.cardinal/tonumber
+local spacers=lpegpatterns.spacer^0
+local endofstring=lpegpatterns.endofstring
+local stepper=spacers*(C(cardinal)*(spacers*S(":-")*spacers*(C(cardinal)+Cc(true) )+Cc(false) )*Carg(1)*Carg(2)/ranger*S(", ")^0 )^1
+local stepper=spacers*(C(cardinal)*(spacers*S(":-")*spacers*(C(cardinal)+(P("*")+endofstring)*Cc(true) )+Cc(false) )*Carg(1)*Carg(2)/ranger*S(", ")^0 )^1*endofstring 
+function parsers.stepper(str,n,action)
+  if type(n)=="function" then
+    lpegmatch(stepper,str,1,false,n or print)
+  else
+    lpegmatch(stepper,str,1,n,action or print)
+  end
+end
+local pattern_math=Cs((P("%")/"\\percent "+P("^")*Cc("{")*lpegpatterns.integer*Cc("}")+P(1))^0)
+local pattern_text=Cs((P("%")/"\\percent "+(P("^")/"\\high")*Cc("{")*lpegpatterns.integer*Cc("}")+P(1))^0)
+patterns.unittotex=pattern
+function parsers.unittotex(str,textmode)
+  return lpegmatch(textmode and pattern_text or pattern_math,str)
+end
+local pattern=Cs((P("^")/"<sup>"*lpegpatterns.integer*Cc("</sup>")+P(1))^0)
+function parsers.unittoxml(str)
+  return lpegmatch(pattern,str)
+end
+local cache={}
+local spaces=lpeg.patterns.space^0
+local dummy=function() end
+table.setmetatableindex(cache,function(t,k)
+  local separator=P(k)
+  local value=(1-separator)^0
+  local pattern=spaces*C(value)*separator^0*Cp()
+  t[k]=pattern
+  return pattern
+end)
+local commalistiterator=cache[","]
+function utilities.parsers.iterator(str,separator)
+  local n=#str
+  if n==0 then
+    return dummy
+  else
+    local pattern=separator and cache[separator] or commalistiterator
+    local p=1
+    return function()
+      if p<=n then
+        local s,e=lpegmatch(pattern,str,p)
+        if e then
+          p=e
+          return s
+        end
+      end
+    end
+  end
+end
+local function initialize(t,name)
+  local source=t[name]
+  if source then
+    local result={}
+    for k,v in next,t[name] do
+      result[k]=v
+    end
+    return result
+  else
+    return {}
+  end
+end
+local function fetch(t,name)
+  return t[name] or {}
+end
+local function process(result,more)
+  for k,v in next,more do
+    result[k]=v
+  end
+  return result
+end
+local name=C((1-S(", "))^1)
+local parser=(Carg(1)*name/initialize)*(S(", ")^1*(Carg(1)*name/fetch))^0
+local merge=Cf(parser,process)
+function utilities.parsers.mergehashes(hash,list)
+  return lpegmatch(merge,list,1,hash)
+end
+function utilities.parsers.runtime(time)
+  if not time then
+    time=os.runtime()
+  end
+  local days=div(time,24*60*60)
+  time=mod(time,24*60*60)
+  local hours=div(time,60*60)
+  time=mod(time,60*60)
+  local minutes=div(time,60)
+  local seconds=mod(time,60)
+  return days,hours,minutes,seconds
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["util-fmt"] = package.loaded["util-fmt"] or true
+
+-- original size: 2274, stripped down to: 1781
+
+if not modules then modules={} end modules ['util-fmt']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+utilities=utilities or {}
+utilities.formatters=utilities.formatters or {}
+local formatters=utilities.formatters
+local concat,format=table.concat,string.format
+local tostring,type=tostring,type
+local strip=string.strip
+local lpegmatch=lpeg.match
+local stripper=lpeg.patterns.stripzeros
+function formatters.stripzeros(str)
+  return lpegmatch(stripper,str)
+end
+function formatters.formatcolumns(result,between)
+  if result and #result>0 then
+    between=between or "   "
+    local widths,numbers={},{}
+    local first=result[1]
+    local n=#first
+    for i=1,n do
+      widths[i]=0
+    end
+    for i=1,#result do
+      local r=result[i]
+      for j=1,n do
+        local rj=r[j]
+        local tj=type(rj)
+        if tj=="number" then
+          numbers[j]=true
+        end
+        if tj~="string" then
+          rj=tostring(rj)
+          r[j]=rj
+        end
+        local w=#rj
+        if w>widths[j] then
+          widths[j]=w
+        end
+      end
+    end
+    for i=1,n do
+      local w=widths[i]
+      if numbers[i] then
+        if w>80 then
+          widths[i]="%s"..between
+         else
+          widths[i]="%0"..w.."i"..between
+        end
+      else
+        if w>80 then
+          widths[i]="%s"..between
+         elseif w>0 then
+          widths[i]="%-"..w.."s"..between
+        else
+          widths[i]="%s"
+        end
+      end
+    end
+    local template=strip(concat(widths))
+    for i=1,#result do
+      local str=format(template,unpack(result[i]))
+      result[i]=strip(str)
+    end
+  end
+  return result
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["trac-set"] = package.loaded["trac-set"] or true
+
+-- original size: 12365, stripped down to: 8799
+
+if not modules then modules={} end modules ['trac-set']={ 
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local type,next,tostring=type,next,tostring
+local concat=table.concat
+local format,find,lower,gsub,topattern=string.format,string.find,string.lower,string.gsub,string.topattern
+local is_boolean=string.is_boolean
+local settings_to_hash=utilities.parsers.settings_to_hash
+local allocate=utilities.storage.allocate
+utilities=utilities or {}
+local utilities=utilities
+local setters=utilities.setters or {}
+utilities.setters=setters
+local data={}
+local trace_initialize=false 
+function setters.initialize(filename,name,values) 
+  local setter=data[name]
+  if setter then
+    frozen=true
+    local data=setter.data
+    if data then
+      for key,newvalue in next,values do
+        local newvalue=is_boolean(newvalue,newvalue)
+        local functions=data[key]
+        if functions then
+          local oldvalue=functions.value
+          if functions.frozen then
+            if trace_initialize then
+              setter.report("%s: %a is %s to %a",filename,key,"frozen",oldvalue)
+            end
+          elseif #functions>0 and not oldvalue then
+            if trace_initialize then
+              setter.report("%s: %a is %s to %a",filename,key,"set",newvalue)
+            end
+            for i=1,#functions do
+              functions[i](newvalue)
+            end
+            functions.value=newvalue
+            functions.frozen=functions.frozen or frozen
+          else
+            if trace_initialize then
+              setter.report("%s: %a is %s as %a",filename,key,"kept",oldvalue)
+            end
+          end
+        else
+          functions={ default=newvalue,frozen=frozen }
+          data[key]=functions
+          if trace_initialize then
+            setter.report("%s: %a is %s to %a",filename,key,"defaulted",newvalue)
+          end
+        end
+      end
+      return true
+    end
+  end
+end
+local function set(t,what,newvalue)
+  local data=t.data
+  if not data.frozen then
+    local done=t.done
+    if type(what)=="string" then
+      what=settings_to_hash(what) 
+    end
+    if type(what)~="table" then
+      return
+    end
+    if not done then 
+      done={}
+      t.done=done
+    end
+    for w,value in next,what do
+      if value=="" then
+        value=newvalue
+      elseif not value then
+        value=false 
+      else
+        value=is_boolean(value,value)
+      end
+      w=topattern(w,true,true)
+      for name,functions in next,data do
+        if done[name] then
+        elseif find(name,w) then
+          done[name]=true
+          for i=1,#functions do
+            functions[i](value)
+          end
+          functions.value=value
+        end
+      end
+    end
+  end
+end
+local function reset(t)
+  local data=t.data
+  if not data.frozen then
+    for name,functions in next,data do
+      for i=1,#functions do
+        functions[i](false)
+      end
+      functions.value=false
+    end
+  end
+end
+local function enable(t,what)
+  set(t,what,true)
+end
+local function disable(t,what)
+  local data=t.data
+  if not what or what=="" then
+    t.done={}
+    reset(t)
+  else
+    set(t,what,false)
+  end
+end
+function setters.register(t,what,...)
+  local data=t.data
+  what=lower(what)
+  local functions=data[what]
+  if not functions then
+    functions={}
+    data[what]=functions
+    if trace_initialize then
+      t.report("defining %a",what)
+    end
+  end
+  local default=functions.default 
+  for i=1,select("#",...) do
+    local fnc=select(i,...)
+    local typ=type(fnc)
+    if typ=="string" then
+      if trace_initialize then
+        t.report("coupling %a to %a",what,fnc)
+      end
+      local s=fnc 
+      fnc=function(value) set(t,s,value) end
+    elseif typ~="function" then
+      fnc=nil
+    end
+    if fnc then
+      functions[#functions+1]=fnc
+      local value=functions.value or default
+      if value~=nil then
+        fnc(value)
+        functions.value=value
+      end
+    end
+  end
+  return false 
+end
+function setters.enable(t,what)
+  local e=t.enable
+  t.enable,t.done=enable,{}
+  enable(t,what)
+  t.enable,t.done=e,{}
+end
+function setters.disable(t,what)
+  local e=t.disable
+  t.disable,t.done=disable,{}
+  disable(t,what)
+  t.disable,t.done=e,{}
+end
+function setters.reset(t)
+  t.done={}
+  reset(t)
+end
+function setters.list(t) 
+  local list=table.sortedkeys(t.data)
+  local user,system={},{}
+  for l=1,#list do
+    local what=list[l]
+    if find(what,"^%*") then
+      system[#system+1]=what
+    else
+      user[#user+1]=what
+    end
+  end
+  return user,system
+end
+function setters.show(t)
+  local category=t.name
+  local list=setters.list(t)
+  t.report()
+  for k=1,#list do
+    local name=list[k]
+    local functions=t.data[name]
+    if functions then
+      local value,default,modules=functions.value,functions.default,#functions
+      value=value==nil and "unset" or tostring(value)
+      default=default==nil and "unset" or tostring(default)
+      t.report("%-50s   modules: %2i   default: %-12s   value: %-12s",name,modules,default,value)
+    end
+  end
+  t.report()
+end
+local enable,disable,register,list,show=setters.enable,setters.disable,setters.register,setters.list,setters.show
+function setters.report(setter,...)
+  print(format("%-15s : %s\n",setter.name,format(...)))
+end
+local function default(setter,name)
+  local d=setter.data[name]
+  return d and d.default
+end
+local function value(setter,name)
+  local d=setter.data[name]
+  return d and (d.value or d.default)
+end
+function setters.new(name) 
+  local setter 
+  setter={
+    data=allocate(),
+    name=name,
+    report=function(...) setters.report (setter,...) end,
+    enable=function(...)     enable (setter,...) end,
+    disable=function(...)     disable (setter,...) end,
+    register=function(...)     register(setter,...) end,
+    list=function(...)     list  (setter,...) end,
+    show=function(...)     show  (setter,...) end,
+    default=function(...) return default (setter,...) end,
+    value=function(...) return value  (setter,...) end,
+  }
+  data[name]=setter
+  return setter
+end
+trackers=setters.new("trackers")
+directives=setters.new("directives")
+experiments=setters.new("experiments")
+local t_enable,t_disable=trackers  .enable,trackers  .disable
+local d_enable,d_disable=directives .enable,directives .disable
+local e_enable,e_disable=experiments.enable,experiments.disable
+local trace_directives=false local trace_directives=false trackers.register("system.directives",function(v) trace_directives=v end)
+local trace_experiments=false local trace_experiments=false trackers.register("system.experiments",function(v) trace_experiments=v end)
+function directives.enable(...)
+  if trace_directives then
+    directives.report("enabling: % t",{...})
+  end
+  d_enable(...)
+end
+function directives.disable(...)
+  if trace_directives then
+    directives.report("disabling: % t",{...})
+  end
+  d_disable(...)
+end
+function experiments.enable(...)
+  if trace_experiments then
+    experiments.report("enabling: % t",{...})
+  end
+  e_enable(...)
+end
+function experiments.disable(...)
+  if trace_experiments then
+    experiments.report("disabling: % t",{...})
+  end
+  e_disable(...)
+end
+directives.register("system.nostatistics",function(v)
+  if statistics then
+    statistics.enable=not v
+  else
+  end
+end)
+directives.register("system.nolibraries",function(v)
+  if libraries then
+    libraries=nil 
+  else
+  end
+end)
+if environment then
+  local engineflags=environment.engineflags
+  if engineflags then
+    local list=engineflags["c:trackers"] or engineflags["trackers"]
+    if type(list)=="string" then
+      setters.initialize("commandline flags","trackers",settings_to_hash(list))
+    end
+    local list=engineflags["c:directives"] or engineflags["directives"]
+    if type(list)=="string" then
+      setters.initialize("commandline flags","directives",settings_to_hash(list))
+    end
+  end
+end
+if texconfig then
+  local function set(k,v)
+    v=tonumber(v)
+    if v then
+      texconfig[k]=v
+    end
+  end
+  directives.register("luatex.expanddepth",function(v) set("expand_depth",v)  end)
+  directives.register("luatex.hashextra",function(v) set("hash_extra",v)   end)
+  directives.register("luatex.nestsize",function(v) set("nest_size",v)   end)
+  directives.register("luatex.maxinopen",function(v) set("max_in_open",v)  end)
+  directives.register("luatex.maxprintline",function(v) set("max_print_line",v) end)
+  directives.register("luatex.maxstrings",function(v) set("max_strings",v)  end)
+  directives.register("luatex.paramsize",function(v) set("param_size",v)   end)
+  directives.register("luatex.savesize",function(v) set("save_size",v)   end)
+  directives.register("luatex.stacksize",function(v) set("stack_size",v)   end)
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["trac-log"] = package.loaded["trac-log"] or true
+
+-- original size: 25391, stripped down to: 16561
+
+if not modules then modules={} end modules ['trac-log']={
+  version=1.001,
+  comment="companion to trac-log.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local write_nl,write=texio and texio.write_nl or print,texio and texio.write or io.write
+local format,gmatch,find=string.format,string.gmatch,string.find
+local concat,insert,remove=table.concat,table.insert,table.remove
+local topattern=string.topattern
+local next,type,select=next,type,select
+local utfchar=utf.char
+local setmetatableindex=table.setmetatableindex
+local formatters=string.formatters
+local texgetcount=tex and tex.getcount
+logs=logs or {}
+local logs=logs
+local moreinfo=[[
+More information about ConTeXt and the tools that come with it can be found at:
+]].."\n"..[[
+maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
+webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
+wiki     : http://contextgarden.net
+]]
+utilities.strings.formatters.add (
+  formatters,"unichr",
+  [["U+" .. format("%%05X",%s) .. " (" .. utfchar(%s) .. ")"]]
+)
+utilities.strings.formatters.add (
+  formatters,"chruni",
+  [[utfchar(%s) .. " (U+" .. format("%%05X",%s) .. ")"]]
+)
+local function ignore() end
+setmetatableindex(logs,function(t,k) t[k]=ignore;return ignore end)
+local report,subreport,status,settarget,setformats,settranslations
+local direct,subdirect,writer,pushtarget,poptarget,setlogfile,settimedlog,setprocessor,setformatters
+if tex and (tex.jobname or tex.formatname) then
+  local valueiskey={ __index=function(t,k) t[k]=k return k end } 
+  local target="term and log"
+  logs.flush=io.flush
+  local formats={} setmetatable(formats,valueiskey)
+  local translations={} setmetatable(translations,valueiskey)
+  writer=function(...)
+    write_nl(target,...)
+  end
+  newline=function()
+    write_nl(target,"\n")
+  end
+  local report_yes=formatters["%-15s > %s\n"]
+  local report_nop=formatters["%-15s >\n"]
+  report=function(a,b,c,...)
+    if c then
+      write_nl(target,report_yes(translations[a],formatters[formats[b]](c,...)))
+    elseif b then
+      write_nl(target,report_yes(translations[a],formats[b]))
+    elseif a then
+      write_nl(target,report_nop(translations[a]))
+    else
+      write_nl(target,"\n")
+    end
+  end
+  local direct_yes=formatters["%-15s > %s"]
+  local direct_nop=formatters["%-15s >"]
+  direct=function(a,b,c,...)
+    if c then
+      return direct_yes(translations[a],formatters[formats[b]](c,...))
+    elseif b then
+      return direct_yes(translations[a],formats[b])
+    elseif a then
+      return direct_nop(translations[a])
+    else
+      return ""
+    end
+  end
+  local subreport_yes=formatters["%-15s > %s > %s\n"]
+  local subreport_nop=formatters["%-15s > %s >\n"]
+  subreport=function(a,s,b,c,...)
+    if c then
+      write_nl(target,subreport_yes(translations[a],translations[s],formatters[formats[b]](c,...)))
+    elseif b then
+      write_nl(target,subreport_yes(translations[a],translations[s],formats[b]))
+    elseif a then
+      write_nl(target,subreport_nop(translations[a],translations[s]))
+    else
+      write_nl(target,"\n")
+    end
+  end
+  local subdirect_yes=formatters["%-15s > %s > %s"]
+  local subdirect_nop=formatters["%-15s > %s >"]
+  subdirect=function(a,s,b,c,...)
+    if c then
+      return subdirect_yes(translations[a],translations[s],formatters[formats[b]](c,...))
+    elseif b then
+      return subdirect_yes(translations[a],translations[s],formats[b])
+    elseif a then
+      return subdirect_nop(translations[a],translations[s])
+    else
+      return ""
+    end
+  end
+  local status_yes=formatters["%-15s : %s\n"]
+  local status_nop=formatters["%-15s :\n"]
+  status=function(a,b,c,...)
+    if c then
+      write_nl(target,status_yes(translations[a],formatters[formats[b]](c,...)))
+    elseif b then
+      write_nl(target,status_yes(translations[a],formats[b]))
+    elseif a then
+      write_nl(target,status_nop(translations[a]))
+    else
+      write_nl(target,"\n")
+    end
+  end
+  local targets={
+    logfile="log",
+    log="log",
+    file="log",
+    console="term",
+    terminal="term",
+    both="term and log",
+  }
+  settarget=function(whereto)
+    target=targets[whereto or "both"] or targets.both
+    if target=="term" or target=="term and log" then
+      logs.flush=io.flush
+    else
+      logs.flush=ignore
+    end
+  end
+  local stack={}
+  pushtarget=function(newtarget)
+    insert(stack,target)
+    settarget(newtarget)
+  end
+  poptarget=function()
+    if #stack>0 then
+      settarget(remove(stack))
+    end
+  end
+  setformats=function(f)
+    formats=f
+  end
+  settranslations=function(t)
+    translations=t
+  end
+  setprocessor=function(f)
+    local writeline=write_nl
+    write_nl=function(target,...)
+      writeline(target,f(...))
+    end
+  end
+  setformatters=function(f)
+    report_yes=f.report_yes  or report_yes
+    report_nop=f.report_nop  or report_nop
+    subreport_yes=f.subreport_yes or subreport_yes
+    subreport_nop=f.subreport_nop or subreport_nop
+    direct_yes=f.direct_yes  or direct_yes
+    direct_nop=f.direct_nop  or direct_nop
+    subdirect_yes=f.subdirect_yes or subdirect_yes
+    subdirect_nop=f.subdirect_nop or subdirect_nop
+    status_yes=f.status_yes  or status_yes
+    status_nop=f.status_nop  or status_nop
+  end
+  setlogfile=ignore
+  settimedlog=ignore
+else
+  logs.flush=ignore
+  writer=function(s)
+    write_nl(s)
+  end
+  newline=function()
+    write_nl("\n")
+  end
+  local report_yes=formatters["%-15s | %s"]
+  local report_nop=formatters["%-15s |"]
+  report=function(a,b,c,...)
+    if c then
+      write_nl(report_yes(a,formatters[b](c,...)))
+    elseif b then
+      write_nl(report_yes(a,b))
+    elseif a then
+      write_nl(report_nop(a))
+    else
+      write_nl("")
+    end
+  end
+  local subreport_yes=formatters["%-15s | %s | %s"]
+  local subreport_nop=formatters["%-15s | %s |"]
+  subreport=function(a,sub,b,c,...)
+    if c then
+      write_nl(subreport_yes(a,sub,formatters[b](c,...)))
+    elseif b then
+      write_nl(subreport_yes(a,sub,b))
+    elseif a then
+      write_nl(subreport_nop(a,sub))
+    else
+      write_nl("")
+    end
+  end
+  local status_yes=formatters["%-15s : %s\n"]
+  local status_nop=formatters["%-15s :\n"]
+  status=function(a,b,c,...) 
+    if c then
+      write_nl(status_yes(a,formatters[b](c,...)))
+    elseif b then
+      write_nl(status_yes(a,b)) 
+    elseif a then
+      write_nl(status_nop(a))
+    else
+      write_nl("\n")
+    end
+  end
+  direct=ignore
+  subdirect=ignore
+  settarget=ignore
+  pushtarget=ignore
+  poptarget=ignore
+  setformats=ignore
+  settranslations=ignore
+  setprocessor=function(f)
+    local writeline=write_nl
+    write_nl=function(s)
+      writeline(f(s))
+    end
+  end
+  setformatters=function(f)
+    report_yes=f.report_yes  or report_yes
+    report_nop=f.report_nop  or report_nop
+    subreport_yes=f.subreport_yes or subreport_yes
+    subreport_nop=f.subreport_nop or subreport_nop
+    status_yes=f.status_yes  or status_yes
+    status_nop=f.status_nop  or status_nop
+  end
+  setlogfile=function(name,keepopen)
+    if name and name~="" then
+      local localtime=os.localtime
+      local writeline=write_nl
+      if keepopen then
+        local f=io.open(name,"ab")
+        write_nl=function(s)
+          writeline(s)
+          f:write(localtime()," | ",s,"\n")
+        end
+      else
+        write_nl=function(s)
+          writeline(s)
+          local f=io.open(name,"ab")
+          f:write(localtime()," | ",s,"\n")
+          f:close()
+        end
+      end
+    end
+    setlogfile=ignore
+  end
+  settimedlog=function()
+    local localtime=os.localtime
+    local writeline=write_nl
+    write_nl=function(s)
+      writeline(localtime().." | "..s)
+    end
+    settimedlog=ignore
+  end
+end
+logs.report=report
+logs.subreport=subreport
+logs.status=status
+logs.settarget=settarget
+logs.pushtarget=pushtarget
+logs.poptarget=poptarget
+logs.setformats=setformats
+logs.settranslations=settranslations
+logs.setlogfile=setlogfile
+logs.settimedlog=settimedlog
+logs.setprocessor=setprocessor
+logs.setformatters=setformatters
+logs.direct=direct
+logs.subdirect=subdirect
+logs.writer=writer
+logs.newline=newline
+local data,states={},nil
+function logs.reporter(category,subcategory)
+  local logger=data[category]
+  if not logger then
+    local state=false
+    if states==true then
+      state=true
+    elseif type(states)=="table" then
+      for c,_ in next,states do
+        if find(category,c) then
+          state=true
+          break
+        end
+      end
+    end
+    logger={
+      reporters={},
+      state=state,
+    }
+    data[category]=logger
+  end
+  local reporter=logger.reporters[subcategory or "default"]
+  if not reporter then
+    if subcategory then
+      reporter=function(...)
+        if not logger.state then
+          subreport(category,subcategory,...)
+        end
+      end
+      logger.reporters[subcategory]=reporter
+    else
+      local tag=category
+      reporter=function(...)
+        if not logger.state then
+          report(category,...)
+        end
+      end
+      logger.reporters.default=reporter
+    end
+  end
+  return reporter
+end
+logs.new=logs.reporter
+local ctxreport=logs.writer
+function logs.setmessenger(m)
+  ctxreport=m
+end
+function logs.messenger(category,subcategory)
+  if subcategory then
+    return function(...)
+      ctxreport(subdirect(category,subcategory,...))
+    end
+  else
+    return function(...)
+      ctxreport(direct(category,...))
+    end
+  end
+end
+local function setblocked(category,value)
+  if category==true then
+    category,value="*",true
+  elseif category==false then
+    category,value="*",false
+  elseif value==nil then
+    value=true
+  end
+  if category=="*" then
+    states=value
+    for k,v in next,data do
+      v.state=value
+    end
+  else
+    states=utilities.parsers.settings_to_hash(category)
+    for c,_ in next,states do
+      if data[c] then
+        v.state=value
+      else
+        c=topattern(c,true,true)
+        for k,v in next,data do
+          if find(k,c) then
+            v.state=value
+          end
+        end
+      end
+    end
+  end
+end
+function logs.disable(category,value)
+  setblocked(category,value==nil and true or value)
+end
+function logs.enable(category)
+  setblocked(category,false)
+end
+function logs.categories()
+  return table.sortedkeys(data)
+end
+function logs.show()
+  local n,c,s,max=0,0,0,0
+  for category,v in table.sortedpairs(data) do
+    n=n+1
+    local state=v.state
+    local reporters=v.reporters
+    local nc=#category
+    if nc>c then
+      c=nc
+    end
+    for subcategory,_ in next,reporters do
+      local ns=#subcategory
+      if ns>c then
+        s=ns
+      end
+      local m=nc+ns
+      if m>max then
+        max=m
+      end
+    end
+    local subcategories=concat(table.sortedkeys(reporters),", ")
+    if state==true then
+      state="disabled"
+    elseif state==false then
+      state="enabled"
+    else
+      state="unknown"
+    end
+    report("logging","category %a, subcategories %a, state %a",category,subcategories,state)
+  end
+  report("logging","categories: %s, max category: %s, max subcategory: %s, max combined: %s",n,c,s,max)
+end
+local delayed_reporters={}
+setmetatableindex(delayed_reporters,function(t,k)
+  local v=logs.reporter(k.name)
+  t[k]=v
+  return v
+end)
+function utilities.setters.report(setter,...)
+  delayed_reporters[setter](...)
+end
+directives.register("logs.blocked",function(v)
+  setblocked(v,true)
+end)
+directives.register("logs.target",function(v)
+  settarget(v)
+end)
+local report_pages=logs.reporter("pages") 
+local real,user,sub
+function logs.start_page_number()
+  real=texgetcount("realpageno")
+  user=texgetcount("userpageno")
+  sub=texgetcount("subpageno")
+end
+local timing=false
+local starttime=nil
+local lasttime=nil
+trackers.register("pages.timing",function(v) 
+  starttime=os.clock()
+  timing=true
+end)
+function logs.stop_page_number() 
+  if timing then
+    local elapsed,average
+    local stoptime=os.clock()
+    if not lasttime or real<2 then
+      elapsed=stoptime
+      average=stoptime
+      starttime=stoptime
+    else
+      elapsed=stoptime-lasttime
+      average=(stoptime-starttime)/(real-1)
+    end
+    lasttime=stoptime
+    if real<=0 then
+      report_pages("flushing page, time %0.04f / %0.04f",elapsed,average)
+    elseif user<=0 then
+      report_pages("flushing realpage %s, time %0.04f / %0.04f",real,elapsed,average)
+    elseif sub<=0 then
+      report_pages("flushing realpage %s, userpage %s, time %0.04f / %0.04f",real,user,elapsed,average)
+    else
+      report_pages("flushing realpage %s, userpage %s, subpage %s, time %0.04f / %0.04f",real,user,sub,elapsed,average)
+    end
+  else
+    if real<=0 then
+      report_pages("flushing page")
+    elseif user<=0 then
+      report_pages("flushing realpage %s",real)
+    elseif sub<=0 then
+      report_pages("flushing realpage %s, userpage %s",real,user)
+    else
+      report_pages("flushing realpage %s, userpage %s, subpage %s",real,user,sub)
+    end
+  end
+  logs.flush()
+end
+local report_files=logs.reporter("files")
+local nesting=0
+local verbose=false
+local hasscheme=url.hasscheme
+function logs.show_open(name)
+end
+function logs.show_close(name)
+end
+function logs.show_load(name)
+end
+local simple=logs.reporter("comment")
+logs.simple=simple
+logs.simpleline=simple
+function logs.setprogram () end 
+function logs.extendbanner() end 
+function logs.reportlines () end 
+function logs.reportbanner() end 
+function logs.reportline () end 
+function logs.simplelines () end 
+function logs.help    () end
+local Carg,C,lpegmatch=lpeg.Carg,lpeg.C,lpeg.match
+local p_newline=lpeg.patterns.newline
+local linewise=(
+  Carg(1)*C((1-p_newline)^1)/function(t,s) t.report(s) end+Carg(1)*p_newline^2/function(t)  t.report() end+p_newline
+)^1
+local function reportlines(t,str)
+  if str then
+    lpegmatch(linewise,str,1,t)
+  end
+end
+local function reportbanner(t)
+  local banner=t.banner
+  if banner then
+    t.report(banner)
+    t.report()
+  end
+end
+local function reportversion(t)
+  local banner=t.banner
+  if banner then
+    t.report(banner)
+  end
+end
+local function reporthelp(t,...)
+  local helpinfo=t.helpinfo
+  if type(helpinfo)=="string" then
+    reportlines(t,helpinfo)
+  elseif type(helpinfo)=="table" then
+    for i=1,select("#",...) do
+      reportlines(t,t.helpinfo[select(i,...)])
+      if i<n then
+        t.report()
+      end
+    end
+  end
+end
+local function reportinfo(t)
+  t.report()
+  reportlines(t,t.moreinfo)
+end
+local function reportexport(t,method)
+  report(t.helpinfo)
+end
+local reporters={
+  lines=reportlines,
+  banner=reportbanner,
+  version=reportversion,
+  help=reporthelp,
+  info=reportinfo,
+  export=reportexport,
+}
+local exporters={
+}
+logs.reporters=reporters
+logs.exporters=exporters
+function logs.application(t)
+  t.name=t.name  or "unknown"
+  t.banner=t.banner
+  t.moreinfo=moreinfo
+  t.report=logs.reporter(t.name)
+  t.help=function(...)
+    reporters.banner(t)
+    reporters.help(t,...)
+    reporters.info(t)
+  end
+  t.export=function(...)
+    reporters.export(t,...)
+  end
+  t.identify=function()
+    reporters.banner(t)
+  end
+  t.version=function()
+    reporters.version(t)
+  end
+  return t
+end
+function logs.system(whereto,process,jobname,category,...)
+  local message=formatters["%s %s => %s => %s => %s\r"](os.date("%d/%m/%y %H:%m:%S"),process,jobname,category,format(...))
+  for i=1,10 do
+    local f=io.open(whereto,"a") 
+    if f then
+      f:write(message)
+      f:close()
+      break
+    else
+      sleep(0.1)
+    end
+  end
+end
+local report_system=logs.reporter("system","logs")
+function logs.obsolete(old,new)
+  local o=loadstring("return "..new)()
+  if type(o)=="function" then
+    return function(...)
+      report_system("function %a is obsolete, use %a",old,new)
+      loadstring(old.."="..new.." return "..old)()(...)
+    end
+  elseif type(o)=="table" then
+    local t,m={},{}
+    m.__index=function(t,k)
+      report_system("table %a is obsolete, use %a",old,new)
+      m.__index,m.__newindex=o,o
+      return o[k]
+    end
+    m.__newindex=function(t,k,v)
+      report_system("table %a is obsolete, use %a",old,new)
+      m.__index,m.__newindex=o,o
+      o[k]=v
+    end
+    if libraries then
+      libraries.obsolete[old]=t 
+    end
+    setmetatable(t,m)
+    return t
+  end
+end
+if utilities then
+  utilities.report=report_system
+end
+if tex and tex.error then
+  function logs.texerrormessage(...) 
+    tex.error(format(...),{})
+  end
+else
+  function logs.texerrormessage(...)
+    print(format(...))
+  end
+end
+io.stdout:setvbuf('no')
+io.stderr:setvbuf('no')
+if package.helpers.report then
+  package.helpers.report=logs.reporter("package loader") 
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["trac-inf"] = package.loaded["trac-inf"] or true
+
+-- original size: 6501, stripped down to: 5156
+
+if not modules then modules={} end modules ['trac-inf']={
+  version=1.001,
+  comment="companion to trac-inf.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local type,tonumber,select=type,tonumber,select
+local format,lower=string.format,string.lower
+local concat=table.concat
+local clock=os.gettimeofday or os.clock 
+local setmetatableindex=table.setmetatableindex
+local serialize=table.serialize
+local formatters=string.formatters
+statistics=statistics or {}
+local statistics=statistics
+statistics.enable=true
+statistics.threshold=0.01
+local statusinfo,n,registered,timers={},0,{},{}
+setmetatableindex(timers,function(t,k)
+  local v={ timing=0,loadtime=0 }
+  t[k]=v
+  return v
+end)
+local function hastiming(instance)
+  return instance and timers[instance]
+end
+local function resettiming(instance)
+  timers[instance or "notimer"]={ timing=0,loadtime=0 }
+end
+local function starttiming(instance)
+  local timer=timers[instance or "notimer"]
+  local it=timer.timing or 0
+  if it==0 then
+    timer.starttime=clock()
+    if not timer.loadtime then
+      timer.loadtime=0
+    end
+  end
+  timer.timing=it+1
+end
+local function stoptiming(instance)
+  local timer=timers[instance or "notimer"]
+  local it=timer.timing
+  if it>1 then
+    timer.timing=it-1
+  else
+    local starttime=timer.starttime
+    if starttime then
+      local stoptime=clock()
+      local loadtime=stoptime-starttime
+      timer.stoptime=stoptime
+      timer.loadtime=timer.loadtime+loadtime
+      timer.timing=0
+      return loadtime
+    end
+  end
+  return 0
+end
+local function elapsed(instance)
+  if type(instance)=="number" then
+    return instance or 0
+  else
+    local timer=timers[instance or "notimer"]
+    return timer and timer.loadtime or 0
+  end
+end
+local function elapsedtime(instance)
+  return format("%0.3f",elapsed(instance))
+end
+local function elapsedindeed(instance)
+  return elapsed(instance)>statistics.threshold
+end
+local function elapsedseconds(instance,rest) 
+  if elapsedindeed(instance) then
+    return format("%0.3f seconds %s",elapsed(instance),rest or "")
+  end
+end
+statistics.hastiming=hastiming
+statistics.resettiming=resettiming
+statistics.starttiming=starttiming
+statistics.stoptiming=stoptiming
+statistics.elapsed=elapsed
+statistics.elapsedtime=elapsedtime
+statistics.elapsedindeed=elapsedindeed
+statistics.elapsedseconds=elapsedseconds
+function statistics.register(tag,fnc)
+  if statistics.enable and type(fnc)=="function" then
+    local rt=registered[tag] or (#statusinfo+1)
+    statusinfo[rt]={ tag,fnc }
+    registered[tag]=rt
+    if #tag>n then n=#tag end
+  end
+end
+local report=logs.reporter("mkiv lua stats")
+function statistics.show()
+  if statistics.enable then
+    local register=statistics.register
+    register("used platform",function()
+      return format("%s, type: %s, binary subtree: %s",os.platform or "unknown",os.type or "unknown",environment.texos or "unknown")
+    end)
+    register("luatex banner",function()
+      return lower(status.banner)
+    end)
+    register("control sequences",function()
+      return format("%s of %s + %s",status.cs_count,status.hash_size,status.hash_extra)
+    end)
+    register("callbacks",function()
+      local total,indirect=status.callbacks or 0,status.indirect_callbacks or 0
+      return format("%s direct, %s indirect, %s total",total-indirect,indirect,total)
+    end)
+    if jit then
+      local status={ jit.status() }
+      if status[1] then
+        register("luajit status",function()
+          return concat(status," ",2)
+        end)
+      end
+    end
+    register("current memory usage",statistics.memused)
+    register("runtime",statistics.runtime)
+    logs.newline() 
+    for i=1,#statusinfo do
+      local s=statusinfo[i]
+      local r=s[2]()
+      if r then
+        report("%s: %s",s[1],r)
+      end
+    end
+    statistics.enable=false
+  end
+end
+function statistics.memused() 
+  local round=math.round or math.floor
+  return format("%s MB (ctx: %s MB)",round(collectgarbage("count")/1000),round(status.luastate_bytes/1000000))
+end
+starttiming(statistics)
+function statistics.formatruntime(runtime) 
+  return format("%s seconds",runtime)  
+end
+function statistics.runtime()
+  stoptiming(statistics)
+  return statistics.formatruntime(elapsedtime(statistics))
+end
+local report=logs.reporter("system")
+function statistics.timed(action)
+  starttiming("run")
+  action()
+  stoptiming("run")
+  report("total runtime: %s seconds",elapsedtime("run"))
+end
+function statistics.tracefunction(base,tag,...)
+  for i=1,select("#",...) do
+    local name=select(i,...)
+    local stat={}
+    local func=base[name]
+    setmetatableindex(stat,function(t,k) t[k]=0 return 0 end)
+    base[name]=function(n,k,v) stat[k]=stat[k]+1 return func(n,k,v) end
+    statistics.register(formatters["%s.%s"](tag,name),function() return serialize(stat,"calls") end)
+  end
+end
+commands=commands or {}
+function commands.resettimer(name)
+  resettiming(name or "whatever")
+  starttiming(name or "whatever")
+end
+function commands.elapsedtime(name)
+  stoptiming(name or "whatever")
+  context(elapsedtime(name or "whatever"))
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["trac-pro"] = package.loaded["trac-pro"] or true
+
+-- original size: 5773, stripped down to: 3453
+
+if not modules then modules={} end modules ['trac-pro']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local getmetatable,setmetatable,rawset,type=getmetatable,setmetatable,rawset,type
+local trace_namespaces=false trackers.register("system.namespaces",function(v) trace_namespaces=v end)
+local report_system=logs.reporter("system","protection")
+namespaces=namespaces or {}
+local namespaces=namespaces
+local registered={}
+local function report_index(k,name)
+  if trace_namespaces then
+    report_system("reference to %a in protected namespace %a: %s",k,name,debug.traceback())
+  else
+    report_system("reference to %a in protected namespace %a",k,name)
+  end
+end
+local function report_newindex(k,name)
+  if trace_namespaces then
+    report_system("assignment to %a in protected namespace %a: %s",k,name,debug.traceback())
+  else
+    report_system("assignment to %a in protected namespace %a",k,name)
+  end
+end
+local function register(name)
+  local data=name=="global" and _G or _G[name]
+  if not data then
+    return 
+  end
+  registered[name]=data
+  local m=getmetatable(data)
+  if not m then
+    m={}
+    setmetatable(data,m)
+  end
+  local index,newindex={},{}
+  m.__saved__index=m.__index
+  m.__no__index=function(t,k)
+    if not index[k] then
+      index[k]=true
+      report_index(k,name)
+    end
+    return nil
+  end
+  m.__saved__newindex=m.__newindex
+  m.__no__newindex=function(t,k,v)
+    if not newindex[k] then
+      newindex[k]=true
+      report_newindex(k,name)
+    end
+    rawset(t,k,v)
+  end
+  m.__protection__depth=0
+end
+local function private(name) 
+  local data=registered[name]
+  if not data then
+    data=_G[name]
+    if not data then
+      data={}
+      _G[name]=data
+    end
+    register(name)
+  end
+  return data
+end
+local function protect(name)
+  local data=registered[name]
+  if not data then
+    return
+  end
+  local m=getmetatable(data)
+  local pd=m.__protection__depth
+  if pd>0 then
+    m.__protection__depth=pd+1
+  else
+    m.__save_d_index,m.__saved__newindex=m.__index,m.__newindex
+    m.__index,m.__newindex=m.__no__index,m.__no__newindex
+    m.__protection__depth=1
+  end
+end
+local function unprotect(name)
+  local data=registered[name]
+  if not data then
+    return
+  end
+  local m=getmetatable(data)
+  local pd=m.__protection__depth
+  if pd>1 then
+    m.__protection__depth=pd-1
+  else
+    m.__index,m.__newindex=m.__saved__index,m.__saved__newindex
+    m.__protection__depth=0
+  end
+end
+local function protectall()
+  for name,_ in next,registered do
+    if name~="global" then
+      protect(name)
+    end
+  end
+end
+local function unprotectall()
+  for name,_ in next,registered do
+    if name~="global" then
+      unprotect(name)
+    end
+  end
+end
+namespaces.register=register    
+namespaces.private=private     
+namespaces.protect=protect
+namespaces.unprotect=unprotect
+namespaces.protectall=protectall
+namespaces.unprotectall=unprotectall
+namespaces.private("namespaces") registered={} register("global") 
+directives.register("system.protect",function(v)
+  if v then
+    protectall()
+  else
+    unprotectall()
+  end
+end)
+directives.register("system.checkglobals",function(v)
+  if v then
+    report_system("enabling global namespace guard")
+    protect("global")
+  else
+    report_system("disabling global namespace guard")
+    unprotect("global")
+  end
+end)
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["util-lua"] = package.loaded["util-lua"] or true
+
+-- original size: 4982, stripped down to: 3511
+
+if not modules then modules={} end modules ['util-lua']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  comment="the strip code is written by Peter Cawley",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local rep,sub,byte,dump,format=string.rep,string.sub,string.byte,string.dump,string.format
+local load,loadfile,type=load,loadfile,type
+utilities=utilities or {}
+utilities.lua=utilities.lua or {}
+local luautilities=utilities.lua
+local report_lua=logs.reporter("system","lua")
+local tracestripping=false
+local forcestupidcompile=true 
+luautilities.stripcode=true 
+luautilities.alwaysstripcode=false 
+luautilities.nofstrippedchunks=0
+luautilities.nofstrippedbytes=0
+local strippedchunks={} 
+luautilities.strippedchunks=strippedchunks
+luautilities.suffixes={
+  tma="tma",
+  tmc=jit and "tmb" or "tmc",
+  lua="lua",
+  luc=jit and "lub" or "luc",
+  lui="lui",
+  luv="luv",
+  luj="luj",
+  tua="tua",
+  tuc="tuc",
+}
+local function register(name)
+  if tracestripping then
+    report_lua("stripped bytecode from %a",name or "unknown")
+  end
+  strippedchunks[#strippedchunks+1]=name
+  luautilities.nofstrippedchunks=luautilities.nofstrippedchunks+1
+end
+local function stupidcompile(luafile,lucfile,strip)
+  local code=io.loaddata(luafile)
+  if code and code~="" then
+    code=load(code)
+    if code then
+      code=dump(code,strip and luautilities.stripcode or luautilities.alwaysstripcode)
+      if code and code~="" then
+        register(name)
+        io.savedata(lucfile,code)
+        return true,0
+      end
+    else
+      report_lua("fatal error %a in file %a",1,luafile)
+    end
+  else
+    report_lua("fatal error %a in file %a",2,luafile)
+  end
+  return false,0
+end
+function luautilities.loadedluacode(fullname,forcestrip,name)
+  name=name or fullname
+  local code,message
+  if environment.loadpreprocessedfile then
+    code,message=environment.loadpreprocessedfile(fullname)
+  else
+    code,message=loadfile(fullname)
+  end
+  if code then
+    code()
+  else
+    report_lua("loading of file %a failed:\n\t%s",fullname,message or "no message")
+  end
+  if forcestrip and luautilities.stripcode then
+    if type(forcestrip)=="function" then
+      forcestrip=forcestrip(fullname)
+    end
+    if forcestrip or luautilities.alwaysstripcode then
+      register(name)
+      return load(dump(code,true)),0
+    else
+      return code,0
+    end
+  elseif luautilities.alwaysstripcode then
+    register(name)
+    return load(dump(code,true)),0
+  else
+    return code,0
+  end
+end
+function luautilities.strippedloadstring(code,forcestrip,name) 
+  local code,message=load(code)
+  if not code then
+    report_lua("loading of file %a failed:\n\t%s",name,message or "no message")
+  end
+  if forcestrip and luautilities.stripcode or luautilities.alwaysstripcode then
+    register(name)
+    return load(dump(code,true)),0 
+  else
+    return code,0
+  end
+end
+function luautilities.compile(luafile,lucfile,cleanup,strip,fallback) 
+  report_lua("compiling %a into %a",luafile,lucfile)
+  os.remove(lucfile)
+  local done=stupidcompile(luafile,lucfile,strip~=false)
+  if done then
+    report_lua("dumping %a into %a stripped",luafile,lucfile)
+    if cleanup==true and lfs.isfile(lucfile) and lfs.isfile(luafile) then
+      report_lua("removing %a",luafile)
+      os.remove(luafile)
+    end
+  end
+  return done
+end
+function luautilities.loadstripped(...)
+  local l=load(...)
+  if l then
+    return load(dump(l,true))
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["util-deb"] = package.loaded["util-deb"] or true
+
+-- original size: 3708, stripped down to: 2568
+
+if not modules then modules={} end modules ['util-deb']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local debug=require "debug"
+local getinfo=debug.getinfo
+local type,next,tostring=type,next,tostring
+local format,find=string.format,string.find
+local is_boolean=string.is_boolean
+utilities=utilities or {}
+local debugger=utilities.debugger or {}
+utilities.debugger=debugger
+local counters={}
+local names={}
+local report=logs.reporter("debugger")
+local function hook()
+  local f=getinfo(2) 
+  if f then
+    local n="unknown"
+    if f.what=="C" then
+      n=f.name or '<anonymous>'
+      if not names[n] then
+        names[n]=format("%42s",n)
+      end
+    else
+      n=f.name or f.namewhat or f.what
+      if not n or n=="" then
+        n="?"
+      end
+      if not names[n] then
+        names[n]=format("%42s : % 5i : %s",n,f.linedefined or 0,f.short_src or "unknown source")
+      end
+    end
+    counters[n]=(counters[n] or 0)+1
+  end
+end
+function debugger.showstats(printer,threshold) 
+  printer=printer or report
+  threshold=threshold or 0
+  local total,grandtotal,functions=0,0,0
+  local dataset={}
+  for name,count in next,counters do
+    dataset[#dataset+1]={ name,count }
+  end
+  table.sort(dataset,function(a,b) return a[2]==b[2] and b[1]>a[1] or a[2]>b[2] end)
+  for i=1,#dataset do
+    local d=dataset[i]
+    local name=d[1]
+    local count=d[2]
+    if count>threshold and not find(name,"for generator") then 
+      printer(format("%8i  %s\n",count,names[name]))
+      total=total+count
+    end
+    grandtotal=grandtotal+count
+    functions=functions+1
+  end
+  printer("\n")
+  printer(format("functions  : % 10i\n",functions))
+  printer(format("total      : % 10i\n",total))
+  printer(format("grand total: % 10i\n",grandtotal))
+  printer(format("threshold  : % 10i\n",threshold))
+end
+function debugger.savestats(filename,threshold)
+  local f=io.open(filename,'w')
+  if f then
+    debugger.showstats(function(str) f:write(str) end,threshold)
+    f:close()
+  end
+end
+function debugger.enable()
+  debug.sethook(hook,"c")
+end
+function debugger.disable()
+  debug.sethook()
+end
+function traceback()
+  local level=1
+  while true do
+    local info=debug.getinfo(level,"Sl")
+    if not info then
+      break
+    elseif info.what=="C" then
+      print(format("%3i : C function",level))
+    else
+      print(format("%3i : [%s]:%d",level,info.short_src,info.currentline))
+    end
+    level=level+1
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["util-mrg"] = package.loaded["util-mrg"] or true
+
+-- original size: 7757, stripped down to: 6015
+
+if not modules then modules={} end modules ['util-mrg']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local gsub,format=string.gsub,string.format
+local concat=table.concat
+local type,next=type,next
+local P,R,S,V,Ct,C,Cs,Cc,Cp,Cmt,Cb,Cg=lpeg.P,lpeg.R,lpeg.S,lpeg.V,lpeg.Ct,lpeg.C,lpeg.Cs,lpeg.Cc,lpeg.Cp,lpeg.Cmt,lpeg.Cb,lpeg.Cg
+local lpegmatch,patterns=lpeg.match,lpeg.patterns
+utilities=utilities or {}
+local merger=utilities.merger or {}
+utilities.merger=merger
+merger.strip_comment=true
+local report=logs.reporter("system","merge")
+utilities.report=report
+local m_begin_merge="begin library merge"
+local m_end_merge="end library merge"
+local m_begin_closure="do -- create closure to overcome 200 locals limit"
+local m_end_closure="end -- of closure"
+local m_pattern="%c+".."%-%-%s+"..m_begin_merge.."%c+(.-)%c+".."%-%-%s+"..m_end_merge.."%c+"
+local m_format="\n\n-- "..m_begin_merge.."\n%s\n".."-- "..m_end_merge.."\n\n"
+local m_faked="-- ".."created merged file".."\n\n".."-- "..m_begin_merge.."\n\n".."-- "..m_end_merge.."\n\n"
+local m_report=[[
+-- used libraries    : %s
+-- skipped libraries : %s
+-- original bytes    : %s
+-- stripped bytes    : %s
+]]
+local m_preloaded=[[package.loaded[%q] = package.loaded[%q] or true]]
+local function self_fake()
+  return m_faked
+end
+local function self_nothing()
+  return ""
+end
+local function self_load(name)
+  local data=io.loaddata(name) or ""
+  if data=="" then
+    report("unknown file %a",name)
+  else
+    report("inserting file %a",name)
+  end
+  return data or ""
+end
+local space=patterns.space
+local eol=patterns.newline
+local equals=P("=")^0
+local open=P("[")*Cg(equals,"init")*P("[")*P("\n")^-1
+local close=P("]")*C(equals)*P("]")
+local closeeq=Cmt(close*Cb("init"),function(s,i,a,b) return a==b end)
+local longstring=open*(1-closeeq)^0*close
+local quoted=patterns.quoted
+local digit=patterns.digit
+local emptyline=space^0*eol
+local operator1=P("<=")+P(">=")+P("~=")+P("..")+S("/^<>=*+%%")
+local operator2=S("*+/")
+local operator3=S("-")
+local operator4=P("..")
+local separator=S(",;")
+local ignore=(P("]")*space^1*P("=")*space^1*P("]"))/"]=["+(P("=")*space^1*P("{"))/"={"+(P("(")*space^1)/"("+(P("{")*(space+eol)^1*P("}"))/"{}"
+local strings=quoted 
+local longcmt=(emptyline^0*P("--")*longstring*emptyline^0)/""
+local longstr=longstring
+local comment=emptyline^0*P("--")*P("-")^0*(1-eol)^0*emptyline^1/"\n"
+local optionalspaces=space^0/""
+local mandatespaces=space^1/""
+local optionalspacing=(eol+space)^0/""
+local mandatespacing=(eol+space)^1/""
+local pack=digit*space^1*operator4*optionalspacing+optionalspacing*operator1*optionalspacing+optionalspacing*operator2*optionalspaces+mandatespacing*operator3*mandatespaces+optionalspaces*separator*optionalspaces
+local lines=emptyline^2/"\n"
+local spaces=(space*space)/" "
+local compact=Cs ((
+  ignore+strings+longcmt+longstr+comment+pack+lines+spaces+1
+)^1 )
+local strip=Cs((emptyline^2/"\n"+1)^0)
+local stripreturn=Cs((1-P("return")*space^1*P(1-space-eol)^1*(space+eol)^0*P(-1))^1)
+function merger.compact(data)
+  return lpegmatch(strip,lpegmatch(compact,data))
+end
+local function self_compact(data)
+  local delta=0
+  if merger.strip_comment then
+    local before=#data
+    data=lpegmatch(compact,data)
+    data=lpegmatch(strip,data)
+    local after=#data
+    delta=before-after
+    report("original size %s, compacted to %s, stripped %s",before,after,delta)
+    data=format("-- original size: %s, stripped down to: %s\n\n%s",before,after,data)
+  end
+  return lpegmatch(stripreturn,data) or data,delta
+end
+local function self_save(name,data)
+  if data~="" then
+    io.savedata(name,data)
+    report("saving %s with size %s",name,#data)
+  end
+end
+local function self_swap(data,code)
+  return data~="" and (gsub(data,m_pattern,function() return format(m_format,code) end,1)) or ""
+end
+local function self_libs(libs,list)
+  local result,f,frozen,foundpath={},nil,false,nil
+  result[#result+1]="\n"
+  if type(libs)=='string' then libs={ libs } end
+  if type(list)=='string' then list={ list } end
+  for i=1,#libs do
+    local lib=libs[i]
+    for j=1,#list do
+      local pth=gsub(list[j],"\\","/") 
+      report("checking library path %a",pth)
+      local name=pth.."/"..lib
+      if lfs.isfile(name) then
+        foundpath=pth
+      end
+    end
+    if foundpath then break end
+  end
+  if foundpath then
+    report("using library path %a",foundpath)
+    local right,wrong,original,stripped={},{},0,0
+    for i=1,#libs do
+      local lib=libs[i]
+      local fullname=foundpath.."/"..lib
+      if lfs.isfile(fullname) then
+        report("using library %a",fullname)
+        local preloaded=file.nameonly(lib)
+        local data=io.loaddata(fullname,true)
+        original=original+#data
+        local data,delta=self_compact(data)
+        right[#right+1]=lib
+        result[#result+1]=m_begin_closure
+        result[#result+1]=format(m_preloaded,preloaded,preloaded)
+        result[#result+1]=data
+        result[#result+1]=m_end_closure
+        stripped=stripped+delta
+      else
+        report("skipping library %a",fullname)
+        wrong[#wrong+1]=lib
+      end
+    end
+    right=#right>0 and concat(right," ") or "-"
+    wrong=#wrong>0 and concat(wrong," ") or "-"
+    report("used libraries: %a",right)
+    report("skipped libraries: %a",wrong)
+    report("original bytes: %a",original)
+    report("stripped bytes: %a",stripped)
+    result[#result+1]=format(m_report,right,wrong,original,stripped)
+  else
+    report("no valid library path found")
+  end
+  return concat(result,"\n\n")
+end
+function merger.selfcreate(libs,list,target)
+  if target then
+    self_save(target,self_swap(self_fake(),self_libs(libs,list)))
+  end
+end
+function merger.selfmerge(name,libs,list,target)
+  self_save(target or name,self_swap(self_load(name),self_libs(libs,list)))
+end
+function merger.selfclean(name)
+  self_save(name,self_swap(self_load(name),self_nothing()))
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["util-tpl"] = package.loaded["util-tpl"] or true
+
+-- original size: 6251, stripped down to: 3488
+
+if not modules then modules={} end modules ['util-tpl']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+utilities.templates=utilities.templates or {}
+local templates=utilities.templates
+local trace_template=false trackers.register("templates.trace",function(v) trace_template=v end)
+local report_template=logs.reporter("template")
+local tostring=tostring
+local format,sub,byte=string.format,string.sub,string.byte
+local P,C,R,Cs,Cc,Carg,lpegmatch,lpegpatterns=lpeg.P,lpeg.C,lpeg.R,lpeg.Cs,lpeg.Cc,lpeg.Carg,lpeg.match,lpeg.patterns
+local replacer
+local function replacekey(k,t,how,recursive)
+  local v=t[k]
+  if not v then
+    if trace_template then
+      report_template("unknown key %a",k)
+    end
+    return ""
+  else
+    v=tostring(v)
+    if trace_template then
+      report_template("setting key %a to value %a",k,v)
+    end
+    if recursive then
+      return lpegmatch(replacer,v,1,t,how,recursive)
+    else
+      return v
+    end
+  end
+end
+local sqlescape=lpeg.replacer {
+  { "'","''"  },
+  { "\\","\\\\" },
+  { "\r\n","\\n" },
+  { "\r","\\n" },
+}
+local sqlquoted=lpeg.Cs(lpeg.Cc("'")*sqlescape*lpeg.Cc("'"))
+lpegpatterns.sqlescape=sqlescape
+lpegpatterns.sqlquoted=sqlquoted
+local luaescape=lpegpatterns.luaescape
+local escapers={
+  lua=function(s)
+    return lpegmatch(luaescape,s)
+  end,
+  sql=function(s)
+    return lpegmatch(sqlescape,s)
+  end,
+}
+local quotedescapers={
+  lua=function(s)
+    return format("%q",s)
+  end,
+  sql=function(s)
+    return lpegmatch(sqlquoted,s)
+  end,
+}
+local luaescaper=escapers.lua
+local quotedluaescaper=quotedescapers.lua
+local function replacekeyunquoted(s,t,how,recurse) 
+  local escaper=how and escapers[how] or luaescaper
+  return escaper(replacekey(s,t,how,recurse))
+end
+local function replacekeyquoted(s,t,how,recurse) 
+  local escaper=how and quotedescapers[how] or quotedluaescaper
+  return escaper(replacekey(s,t,how,recurse))
+end
+local single=P("%") 
+local double=P("%%") 
+local lquoted=P("%[") 
+local rquoted=P("]%") 
+local lquotedq=P("%(") 
+local rquotedq=P(")%") 
+local escape=double/'%%'
+local nosingle=single/''
+local nodouble=double/''
+local nolquoted=lquoted/''
+local norquoted=rquoted/''
+local nolquotedq=lquotedq/''
+local norquotedq=rquotedq/''
+local key=nosingle*((C((1-nosingle )^1)*Carg(1)*Carg(2)*Carg(3))/replacekey    )*nosingle
+local quoted=nolquotedq*((C((1-norquotedq)^1)*Carg(1)*Carg(2)*Carg(3))/replacekeyquoted )*norquotedq
+local unquoted=nolquoted*((C((1-norquoted )^1)*Carg(1)*Carg(2)*Carg(3))/replacekeyunquoted)*norquoted
+local any=P(1)
+   replacer=Cs((unquoted+quoted+escape+key+any)^0)
+local function replace(str,mapping,how,recurse)
+  if mapping and str then
+    return lpegmatch(replacer,str,1,mapping,how or "lua",recurse or false) or str
+  else
+    return str
+  end
+end
+templates.replace=replace
+function templates.replacer(str,how,recurse) 
+  return function(mapping)
+    return lpegmatch(replacer,str,1,mapping,how or "lua",recurse or false) or str
+  end
+end
+function templates.load(filename,mapping,how,recurse)
+  local data=io.loaddata(filename) or ""
+  if mapping and next(mapping) then
+    return replace(data,mapping,how,recurse)
+  else
+    return data
+  end
+end
+function templates.resolve(t,mapping,how,recurse)
+  if not mapping then
+    mapping=t
+  end
+  for k,v in next,t do
+    t[k]=replace(v,mapping,how,recurse)
+  end
+  return t
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["util-env"] = package.loaded["util-env"] or true
+
+-- original size: 8807, stripped down to: 5085
+
+if not modules then modules={} end modules ['util-env']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local allocate,mark=utilities.storage.allocate,utilities.storage.mark
+local format,sub,match,gsub,find=string.format,string.sub,string.match,string.gsub,string.find
+local unquoted,quoted=string.unquoted,string.quoted
+local concat,insert,remove=table.concat,table.insert,table.remove
+environment=environment or {}
+local environment=environment
+os.setlocale(nil,nil) 
+function os.setlocale()
+end
+local validengines=allocate {
+  ["luatex"]=true,
+  ["luajittex"]=true,
+}
+local basicengines=allocate {
+  ["luatex"]="luatex",
+  ["texlua"]="luatex",
+  ["texluac"]="luatex",
+  ["luajittex"]="luajittex",
+  ["texluajit"]="luajittex",
+}
+local luaengines=allocate {
+  ["lua"]=true,
+  ["luajit"]=true,
+}
+environment.validengines=validengines
+environment.basicengines=basicengines
+if not arg then
+  environment.used_as_library=true
+elseif luaengines[file.removesuffix(arg[-1])] then
+elseif validengines[file.removesuffix(arg[0])] then
+  if arg[1]=="--luaonly" then
+    arg[-1]=arg[0]
+    arg[ 0]=arg[2]
+    for k=3,#arg do
+      arg[k-2]=arg[k]
+    end
+    remove(arg) 
+    remove(arg) 
+  else
+  end
+  local originalzero=file.basename(arg[0])
+  local specialmapping={ luatools=="base" }
+  if originalzero~="mtxrun" and originalzero~="mtxrun.lua" then
+    arg[0]=specialmapping[originalzero] or originalzero
+    insert(arg,0,"--script")
+    insert(arg,0,"mtxrun")
+  end
+end
+environment.arguments=allocate()
+environment.files=allocate()
+environment.sortedflags=nil
+function environment.initializearguments(arg)
+  local arguments,files={},{}
+  environment.arguments,environment.files,environment.sortedflags=arguments,files,nil
+  for index=1,#arg do
+    local argument=arg[index]
+    if index>0 then
+      local flag,value=match(argument,"^%-+(.-)=(.-)$")
+      if flag then
+        flag=gsub(flag,"^c:","")
+        arguments[flag]=unquoted(value or "")
+      else
+        flag=match(argument,"^%-+(.+)")
+        if flag then
+          flag=gsub(flag,"^c:","")
+          arguments[flag]=true
+        else
+          files[#files+1]=argument
+        end
+      end
+    end
+  end
+  environment.ownname=file.reslash(environment.ownname or arg[0] or 'unknown.lua')
+end
+function environment.setargument(name,value)
+  environment.arguments[name]=value
+end
+function environment.getargument(name,partial)
+  local arguments,sortedflags=environment.arguments,environment.sortedflags
+  if arguments[name] then
+    return arguments[name]
+  elseif partial then
+    if not sortedflags then
+      sortedflags=allocate(table.sortedkeys(arguments))
+      for k=1,#sortedflags do
+        sortedflags[k]="^"..sortedflags[k]
+      end
+      environment.sortedflags=sortedflags
+    end
+    for k=1,#sortedflags do
+      local v=sortedflags[k]
+      if find(name,v) then
+        return arguments[sub(v,2,#v)]
+      end
+    end
+  end
+  return nil
+end
+environment.argument=environment.getargument
+function environment.splitarguments(separator) 
+  local done,before,after=false,{},{}
+  local originalarguments=environment.originalarguments
+  for k=1,#originalarguments do
+    local v=originalarguments[k]
+    if not done and v==separator then
+      done=true
+    elseif done then
+      after[#after+1]=v
+    else
+      before[#before+1]=v
+    end
+  end
+  return before,after
+end
+function environment.reconstructcommandline(arg,noquote)
+  arg=arg or environment.originalarguments
+  if noquote and #arg==1 then
+    local a=arg[1]
+    a=resolvers.resolve(a)
+    a=unquoted(a)
+    return a
+  elseif #arg>0 then
+    local result={}
+    for i=1,#arg do
+      local a=arg[i]
+      a=resolvers.resolve(a)
+      a=unquoted(a)
+      a=gsub(a,'"','\\"') 
+      if find(a," ") then
+        result[#result+1]=quoted(a)
+      else
+        result[#result+1]=a
+      end
+    end
+    return concat(result," ")
+  else
+    return ""
+  end
+end
+function environment.relativepath(path,root)
+  if not path then
+    path=""
+  end
+  if not file.is_rootbased_path(path) then
+    if not root then
+      root=file.pathpart(environment.ownscript or environment.ownname or ".")
+    end
+    if root=="" then
+      root="."
+    end
+    path=root.."/"..path
+  end
+  return file.collapsepath(path,true)
+end
+if arg then
+  local newarg,instring={},false
+  for index=1,#arg do
+    local argument=arg[index]
+    if find(argument,"^\"") then
+      newarg[#newarg+1]=gsub(argument,"^\"","")
+      if not find(argument,"\"$") then
+        instring=true
+      end
+    elseif find(argument,"\"$") then
+      newarg[#newarg]=newarg[#newarg].." "..gsub(argument,"\"$","")
+      instring=false
+    elseif instring then
+      newarg[#newarg]=newarg[#newarg].." "..argument
+    else
+      newarg[#newarg+1]=argument
+    end
+  end
+  for i=1,-5,-1 do
+    newarg[i]=arg[i]
+  end
+  environment.initializearguments(newarg)
+  environment.originalarguments=mark(newarg)
+  environment.rawarguments=mark(arg)
+  arg={} 
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["luat-env"] = package.loaded["luat-env"] or true
+
+-- original size: 5930, stripped down to: 4235
+
+ if not modules then modules={} end modules ['luat-env']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local rawset,rawget,loadfile,assert=rawset,rawget,loadfile,assert
+local trace_locating=false trackers.register("resolvers.locating",function(v) trace_locating=v end)
+local report_lua=logs.reporter("resolvers","lua")
+local luautilities=utilities.lua
+local luasuffixes=luautilities.suffixes
+local texgettoks=tex and tex.gettoks
+environment=environment or {}
+local environment=environment
+local mt={
+  __index=function(_,k)
+    if k=="version" then
+      local version=texgettoks and texgettoks("contextversiontoks")
+      if version and version~="" then
+        rawset(environment,"version",version)
+        return version
+      else
+        return "unknown"
+      end
+    elseif k=="kind" then
+      local kind=texgettoks and texgettoks("contextkindtoks")
+      if kind and kind~="" then
+        rawset(environment,"kind",kind)
+        return kind
+      else
+        return "unknown"
+      end
+    elseif k=="jobname" or k=="formatname" then
+      local name=tex and tex[k]
+      if name or name=="" then
+        rawset(environment,k,name)
+        return name
+      else
+        return "unknown"
+      end
+    elseif k=="outputfilename" then
+      local name=environment.jobname
+      rawset(environment,k,name)
+      return name
+    end
+  end
+}
+setmetatable(environment,mt)
+function environment.texfile(filename)
+  return resolvers.findfile(filename,'tex')
+end
+function environment.luafile(filename) 
+  local resolved=resolvers.findfile(filename,'tex') or ""
+  if resolved~="" then
+    return resolved
+  end
+  resolved=resolvers.findfile(filename,'texmfscripts') or ""
+  if resolved~="" then
+    return resolved
+  end
+  return resolvers.findfile(filename,'luatexlibs') or ""
+end
+local stripindeed=false directives.register("system.compile.strip",function(v) stripindeed=v end)
+local function strippable(filename)
+  if stripindeed then
+    local modu=modules[file.nameonly(filename)]
+    return modu and modu.dataonly
+  else
+    return false
+  end
+end
+function environment.luafilechunk(filename,silent) 
+  filename=file.replacesuffix(filename,"lua")
+  local fullname=environment.luafile(filename)
+  if fullname and fullname~="" then
+    local data=luautilities.loadedluacode(fullname,strippable,filename) 
+    if trace_locating then
+      report_lua("loading file %a %s",fullname,not data and "failed" or "succeeded")
+    elseif not silent then
+      texio.write("<",data and "+ " or "- ",fullname,">")
+    end
+    return data
+  else
+    if trace_locating then
+      report_lua("unknown file %a",filename)
+    end
+    return nil
+  end
+end
+function environment.loadluafile(filename,version)
+  local lucname,luaname,chunk
+  local basename=file.removesuffix(filename)
+  if basename==filename then
+    luaname=file.addsuffix(basename,luasuffixes.lua)
+    lucname=file.addsuffix(basename,luasuffixes.luc)
+  else
+    luaname=basename 
+    lucname=nil
+  end
+  local fullname=(lucname and environment.luafile(lucname)) or ""
+  if fullname~="" then
+    if trace_locating then
+      report_lua("loading %a",fullname)
+    end
+    chunk=loadfile(fullname) 
+  end
+  if chunk then
+    assert(chunk)()
+    if version then
+      local v=version 
+      if modules and modules[filename] then
+        v=modules[filename].version 
+      elseif versions and versions[filename] then
+        v=versions[filename]    
+      end
+      if v==version then
+        return true
+      else
+        if trace_locating then
+          report_lua("version mismatch for %a, lua version %a, luc version %a",filename,v,version)
+        end
+        environment.loadluafile(filename)
+      end
+    else
+      return true
+    end
+  end
+  fullname=(luaname and environment.luafile(luaname)) or ""
+  if fullname~="" then
+    if trace_locating then
+      report_lua("loading %a",fullname)
+    end
+    chunk=loadfile(fullname) 
+    if not chunk then
+      if trace_locating then
+        report_lua("unknown file %a",filename)
+      end
+    else
+      assert(chunk)()
+      return true
+    end
+  end
+  return false
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["lxml-tab"] = package.loaded["lxml-tab"] or true
+
+-- original size: 42549, stripped down to: 26643
+
+if not modules then modules={} end modules ['lxml-tab']={
+  version=1.001,
+  comment="this module is the basis for the lxml-* ones",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local trace_entities=false trackers.register("xml.entities",function(v) trace_entities=v end)
+local report_xml=logs and logs.reporter("xml","core") or function(...) print(string.format(...)) end
+if lpeg.setmaxstack then lpeg.setmaxstack(1000) end 
+xml=xml or {}
+local xml=xml
+local concat,remove,insert=table.concat,table.remove,table.insert
+local type,next,setmetatable,getmetatable,tonumber=type,next,setmetatable,getmetatable,tonumber
+local lower,find,match,gsub=string.lower,string.find,string.match,string.gsub
+local utfchar=utf.char
+local lpegmatch=lpeg.match
+local P,S,R,C,V,C,Cs=lpeg.P,lpeg.S,lpeg.R,lpeg.C,lpeg.V,lpeg.C,lpeg.Cs
+local formatters=string.formatters
+xml.xmlns=xml.xmlns or {}
+local check=P(false)
+local parse=check
+function xml.registerns(namespace,pattern) 
+  check=check+C(P(lower(pattern)))/namespace
+  parse=P { P(check)+1*V(1) }
+end
+function xml.checkns(namespace,url)
+  local ns=lpegmatch(parse,lower(url))
+  if ns and namespace~=ns then
+    xml.xmlns[namespace]=ns
+  end
+end
+function xml.resolvens(url)
+   return lpegmatch(parse,lower(url)) or ""
+end
+local nsremap,resolvens=xml.xmlns,xml.resolvens
+local stack={}
+local top={}
+local dt={}
+local at={}
+local xmlns={}
+local errorstr=nil
+local entities={}
+local strip=false
+local cleanup=false
+local utfize=false
+local resolve_predefined=false
+local unify_predefined=false
+local dcache={}
+local hcache={}
+local acache={}
+local mt={}
+local function initialize_mt(root)
+  mt={ __index=root } 
+end
+function xml.setproperty(root,k,v)
+  getmetatable(root).__index[k]=v
+end
+function xml.checkerror(top,toclose)
+  return "" 
+end
+local function add_attribute(namespace,tag,value)
+  if cleanup and #value>0 then
+    value=cleanup(value) 
+  end
+  if tag=="xmlns" then
+    xmlns[#xmlns+1]=resolvens(value)
+    at[tag]=value
+  elseif namespace=="" then
+    at[tag]=value
+  elseif namespace=="xmlns" then
+    xml.checkns(tag,value)
+    at["xmlns:"..tag]=value
+  else
+    at[namespace..":"..tag]=value
+  end
+end
+local function add_empty(spacing,namespace,tag)
+  if #spacing>0 then
+    dt[#dt+1]=spacing
+  end
+  local resolved=namespace=="" and xmlns[#xmlns] or nsremap[namespace] or namespace
+  top=stack[#stack]
+  dt=top.dt
+  local t={ ns=namespace or "",rn=resolved,tg=tag,at=at,dt={},__p__=top }
+  dt[#dt+1]=t
+  setmetatable(t,mt)
+  if at.xmlns then
+    remove(xmlns)
+  end
+  at={}
+end
+local function add_begin(spacing,namespace,tag)
+  if #spacing>0 then
+    dt[#dt+1]=spacing
+  end
+  local resolved=namespace=="" and xmlns[#xmlns] or nsremap[namespace] or namespace
+  top={ ns=namespace or "",rn=resolved,tg=tag,at=at,dt={},__p__=stack[#stack] }
+  setmetatable(top,mt)
+  dt=top.dt
+  stack[#stack+1]=top
+  at={}
+end
+local function add_end(spacing,namespace,tag)
+  if #spacing>0 then
+    dt[#dt+1]=spacing
+  end
+  local toclose=remove(stack)
+  top=stack[#stack]
+  if #stack<1 then
+    errorstr=formatters["unable to close %s %s"](tag,xml.checkerror(top,toclose) or "")
+  elseif toclose.tg~=tag then 
+    errorstr=formatters["unable to close %s with %s %s"](toclose.tg,tag,xml.checkerror(top,toclose) or "")
+  end
+  dt=top.dt
+  dt[#dt+1]=toclose
+  if toclose.at.xmlns then
+    remove(xmlns)
+  end
+end
+local function add_text(text)
+  if cleanup and #text>0 then
+    dt[#dt+1]=cleanup(text)
+  else
+    dt[#dt+1]=text
+  end
+end
+local function add_special(what,spacing,text)
+  if #spacing>0 then
+    dt[#dt+1]=spacing
+  end
+  if strip and (what=="@cm@" or what=="@dt@") then
+  else
+    dt[#dt+1]={ special=true,ns="",tg=what,dt={ text } }
+  end
+end
+local function set_message(txt)
+  errorstr="garbage at the end of the file: "..gsub(txt,"([ \n\r\t]*)","")
+end
+local reported_attribute_errors={}
+local function attribute_value_error(str)
+  if not reported_attribute_errors[str] then
+    report_xml("invalid attribute value %a",str)
+    reported_attribute_errors[str]=true
+    at._error_=str
+  end
+  return str
+end
+local function attribute_specification_error(str)
+  if not reported_attribute_errors[str] then
+    report_xml("invalid attribute specification %a",str)
+    reported_attribute_errors[str]=true
+    at._error_=str
+  end
+  return str
+end
+xml.placeholders={
+  unknown_dec_entity=function(str) return str=="" and "&error;" or formatters["&%s;"](str) end,
+  unknown_hex_entity=function(str) return formatters["&#x%s;"](str) end,
+  unknown_any_entity=function(str) return formatters["&#x%s;"](str) end,
+}
+local placeholders=xml.placeholders
+local function fromhex(s)
+  local n=tonumber(s,16)
+  if n then
+    return utfchar(n)
+  else
+    return formatters["h:%s"](s),true
+  end
+end
+local function fromdec(s)
+  local n=tonumber(s)
+  if n then
+    return utfchar(n)
+  else
+    return formatters["d:%s"](s),true
+  end
+end
+local rest=(1-P(";"))^0
+local many=P(1)^0
+local parsedentity=P("&")*(P("#x")*(rest/fromhex)+P("#")*(rest/fromdec))*P(";")*P(-1)+(P("#x")*(many/fromhex)+P("#")*(many/fromdec))
+local predefined_unified={
+  [38]="&amp;",
+  [42]="&quot;",
+  [47]="&apos;",
+  [74]="&lt;",
+  [76]="&gt;",
+}
+local predefined_simplified={
+  [38]="&",amp="&",
+  [42]='"',quot='"',
+  [47]="'",apos="'",
+  [74]="<",lt="<",
+  [76]=">",gt=">",
+}
+local nofprivates=0xF0000 
+local privates_u={ 
+  [ [[&]] ]="&amp;",
+  [ [["]] ]="&quot;",
+  [ [[']] ]="&apos;",
+  [ [[<]] ]="&lt;",
+  [ [[>]] ]="&gt;",
+}
+local privates_p={}
+local privates_n={
+}
+local escaped=utf.remapper(privates_u)
+local function unescaped(s)
+  local p=privates_n[s]
+  if not p then
+    nofprivates=nofprivates+1
+    p=utfchar(nofprivates)
+    privates_n[s]=p
+    s="&"..s..";" 
+    privates_u[p]=s
+    privates_p[p]=s
+  end
+  return p
+end
+local unprivatized=utf.remapper(privates_p)
+xml.privatetoken=unescaped
+xml.unprivatized=unprivatized
+xml.privatecodes=privates_n
+local function handle_hex_entity(str)
+  local h=hcache[str]
+  if not h then
+    local n=tonumber(str,16)
+    h=unify_predefined and predefined_unified[n]
+    if h then
+      if trace_entities then
+        report_xml("utfize, converting hex entity &#x%s; into %a",str,h)
+      end
+    elseif utfize then
+      h=(n and utfchar(n)) or xml.unknown_hex_entity(str) or ""
+      if not n then
+        report_xml("utfize, ignoring hex entity &#x%s;",str)
+      elseif trace_entities then
+        report_xml("utfize, converting hex entity &#x%s; into %a",str,h)
+      end
+    else
+      if trace_entities then
+        report_xml("found entity &#x%s;",str)
+      end
+      h="&#x"..str..";"
+    end
+    hcache[str]=h
+  end
+  return h
+end
+local function handle_dec_entity(str)
+  local d=dcache[str]
+  if not d then
+    local n=tonumber(str)
+    d=unify_predefined and predefined_unified[n]
+    if d then
+      if trace_entities then
+        report_xml("utfize, converting dec entity &#%s; into %a",str,d)
+      end
+    elseif utfize then
+      d=(n and utfchar(n)) or placeholders.unknown_dec_entity(str) or ""
+      if not n then
+        report_xml("utfize, ignoring dec entity &#%s;",str)
+      elseif trace_entities then
+        report_xml("utfize, converting dec entity &#%s; into %a",str,d)
+      end
+    else
+      if trace_entities then
+        report_xml("found entity &#%s;",str)
+      end
+      d="&#"..str..";"
+    end
+    dcache[str]=d
+  end
+  return d
+end
+xml.parsedentitylpeg=parsedentity
+local function handle_any_entity(str)
+  if resolve then
+    local a=acache[str] 
+    if not a then
+      a=resolve_predefined and predefined_simplified[str]
+      if a then
+        if trace_entities then
+          report_xml("resolving entity &%s; to predefined %a",str,a)
+        end
+      else
+        if type(resolve)=="function" then
+          a=resolve(str) or entities[str]
+        else
+          a=entities[str]
+        end
+        if a then
+          if type(a)=="function" then
+            if trace_entities then
+              report_xml("expanding entity &%s; to function call",str)
+            end
+            a=a(str) or ""
+          end
+          a=lpegmatch(parsedentity,a) or a 
+          if trace_entities then
+            report_xml("resolving entity &%s; to internal %a",str,a)
+          end
+        else
+          local unknown_any_entity=placeholders.unknown_any_entity
+          if unknown_any_entity then
+            a=unknown_any_entity(str) or ""
+          end
+          if a then
+            if trace_entities then
+              report_xml("resolving entity &%s; to external %s",str,a)
+            end
+          else
+            if trace_entities then
+              report_xml("keeping entity &%s;",str)
+            end
+            if str=="" then
+              a="&error;"
+            else
+              a="&"..str..";"
+            end
+          end
+        end
+      end
+      acache[str]=a
+    elseif trace_entities then
+      if not acache[str] then
+        report_xml("converting entity &%s; to %a",str,a)
+        acache[str]=a
+      end
+    end
+    return a
+  else
+    local a=acache[str]
+    if not a then
+      a=resolve_predefined and predefined_simplified[str]
+      if a then
+        acache[str]=a
+        if trace_entities then
+          report_xml("entity &%s; becomes %a",str,a)
+        end
+      elseif str=="" then
+        if trace_entities then
+          report_xml("invalid entity &%s;",str)
+        end
+        a="&error;"
+        acache[str]=a
+      else
+        if trace_entities then
+          report_xml("entity &%s; is made private",str)
+        end
+        a=unescaped(str)
+        acache[str]=a
+      end
+    end
+    return a
+  end
+end
+local function handle_end_entity(chr)
+  report_xml("error in entity, %a found instead of %a",chr,";")
+end
+local space=S(' \r\n\t')
+local open=P('<')
+local close=P('>')
+local squote=S("'")
+local dquote=S('"')
+local equal=P('=')
+local slash=P('/')
+local colon=P(':')
+local semicolon=P(';')
+local ampersand=P('&')
+local valid=R('az','AZ','09')+S('_-.')
+local name_yes=C(valid^1)*colon*C(valid^1)
+local name_nop=C(P(true))*C(valid^1)
+local name=name_yes+name_nop
+local utfbom=lpeg.patterns.utfbom 
+local spacing=C(space^0)
+local anyentitycontent=(1-open-semicolon-space-close)^0
+local hexentitycontent=R("AF","af","09")^0
+local decentitycontent=R("09")^0
+local parsedentity=P("#")/""*(
+                P("x")/""*(hexentitycontent/handle_hex_entity)+(decentitycontent/handle_dec_entity)
+              )+(anyentitycontent/handle_any_entity)
+local entity=ampersand/""*parsedentity*((semicolon/"")+#(P(1)/handle_end_entity))
+local text_unparsed=C((1-open)^1)
+local text_parsed=Cs(((1-open-ampersand)^1+entity)^1)
+local somespace=space^1
+local optionalspace=space^0
+local value=(squote*Cs((entity+(1-squote))^0)*squote)+(dquote*Cs((entity+(1-dquote))^0)*dquote) 
+local endofattributes=slash*close+close 
+local whatever=space*name*optionalspace*equal
+local wrongvalue=Cs(P(entity+(1-space-endofattributes))^1)/attribute_value_error
+local attributevalue=value+wrongvalue
+local attribute=(somespace*name*optionalspace*equal*optionalspace*attributevalue)/add_attribute
+local attributes=(attribute+somespace^-1*(((1-endofattributes)^1)/attribute_specification_error))^0
+local parsedtext=text_parsed/add_text
+local unparsedtext=text_unparsed/add_text
+local balanced=P { "["*((1-S"[]")+V(1))^0*"]" } 
+local emptyelement=(spacing*open*name*attributes*optionalspace*slash*close)/add_empty
+local beginelement=(spacing*open*name*attributes*optionalspace*close)/add_begin
+local endelement=(spacing*open*slash*name*optionalspace*close)/add_end
+local begincomment=open*P("!--")
+local endcomment=P("--")*close
+local begininstruction=open*P("?")
+local endinstruction=P("?")*close
+local begincdata=open*P("![CDATA[")
+local endcdata=P("]]")*close
+local someinstruction=C((1-endinstruction)^0)
+local somecomment=C((1-endcomment  )^0)
+local somecdata=C((1-endcdata   )^0)
+local function normalentity(k,v ) entities[k]=v end
+local function systementity(k,v,n) entities[k]=v end
+local function publicentity(k,v,n) entities[k]=v end
+local begindoctype=open*P("!DOCTYPE")
+local enddoctype=close
+local beginset=P("[")
+local endset=P("]")
+local doctypename=C((1-somespace-close)^0)
+local elementdoctype=optionalspace*P("<!ELEMENT")*(1-close)^0*close
+local basiccomment=begincomment*((1-endcomment)^0)*endcomment
+local normalentitytype=(doctypename*somespace*value)/normalentity
+local publicentitytype=(doctypename*somespace*P("PUBLIC")*somespace*value)/publicentity
+local systementitytype=(doctypename*somespace*P("SYSTEM")*somespace*value*somespace*P("NDATA")*somespace*doctypename)/systementity
+local entitydoctype=optionalspace*P("<!ENTITY")*somespace*(systementitytype+publicentitytype+normalentitytype)*optionalspace*close
+local doctypeset=beginset*optionalspace*P(elementdoctype+entitydoctype+basiccomment+space)^0*optionalspace*endset
+local definitiondoctype=doctypename*somespace*doctypeset
+local publicdoctype=doctypename*somespace*P("PUBLIC")*somespace*value*somespace*value*somespace*doctypeset
+local systemdoctype=doctypename*somespace*P("SYSTEM")*somespace*value*somespace*doctypeset
+local simpledoctype=(1-close)^1 
+local somedoctype=C((somespace*(publicdoctype+systemdoctype+definitiondoctype+simpledoctype)*optionalspace)^0)
+local instruction=(spacing*begininstruction*someinstruction*endinstruction)/function(...) add_special("@pi@",...) end
+local comment=(spacing*begincomment*somecomment*endcomment  )/function(...) add_special("@cm@",...) end
+local cdata=(spacing*begincdata*somecdata*endcdata   )/function(...) add_special("@cd@",...) end
+local doctype=(spacing*begindoctype*somedoctype*enddoctype  )/function(...) add_special("@dt@",...) end
+local trailer=space^0*(text_unparsed/set_message)^0
+local grammar_parsed_text=P { "preamble",
+  preamble=utfbom^0*instruction^0*(doctype+comment+instruction)^0*V("parent")*trailer,
+  parent=beginelement*V("children")^0*endelement,
+  children=parsedtext+V("parent")+emptyelement+comment+cdata+instruction,
+}
+local grammar_unparsed_text=P { "preamble",
+  preamble=utfbom^0*instruction^0*(doctype+comment+instruction)^0*V("parent")*trailer,
+  parent=beginelement*V("children")^0*endelement,
+  children=unparsedtext+V("parent")+emptyelement+comment+cdata+instruction,
+}
+local function _xmlconvert_(data,settings)
+  settings=settings or {}
+  strip=settings.strip_cm_and_dt
+  utfize=settings.utfize_entities
+  resolve=settings.resolve_entities
+  resolve_predefined=settings.resolve_predefined_entities 
+  unify_predefined=settings.unify_predefined_entities 
+  cleanup=settings.text_cleanup
+  entities=settings.entities or {}
+  if utfize==nil then
+    settings.utfize_entities=true
+    utfize=true
+  end
+  if resolve_predefined==nil then
+    settings.resolve_predefined_entities=true
+    resolve_predefined=true
+  end
+  stack,top,at,xmlns,errorstr={},{},{},{},nil
+  acache,hcache,dcache={},{},{} 
+  reported_attribute_errors={}
+  if settings.parent_root then
+    mt=getmetatable(settings.parent_root)
+  else
+    initialize_mt(top)
+  end
+  stack[#stack+1]=top
+  top.dt={}
+  dt=top.dt
+  if not data or data=="" then
+    errorstr="empty xml file"
+  elseif utfize or resolve then
+    if lpegmatch(grammar_parsed_text,data) then
+      errorstr=""
+    else
+      errorstr="invalid xml file - parsed text"
+    end
+  elseif type(data)=="string" then
+    if lpegmatch(grammar_unparsed_text,data) then
+      errorstr=""
+    else
+      errorstr="invalid xml file - unparsed text"
+    end
+  else
+    errorstr="invalid xml file - no text at all"
+  end
+  local result
+  if errorstr and errorstr~="" then
+    result={ dt={ { ns="",tg="error",dt={ errorstr },at={},er=true } } }
+    setmetatable(stack,mt)
+    local errorhandler=settings.error_handler
+    if errorhandler==false then
+    else
+      errorhandler=errorhandler or xml.errorhandler
+      if errorhandler then
+        local currentresource=settings.currentresource
+        if currentresource and currentresource~="" then
+          xml.errorhandler(formatters["load error in [%s]: %s"](currentresource,errorstr))
+        else
+          xml.errorhandler(formatters["load error: %s"](errorstr))
+        end
+      end
+    end
+  else
+    result=stack[1]
+  end
+  if not settings.no_root then
+    result={ special=true,ns="",tg='@rt@',dt=result.dt,at={},entities=entities,settings=settings }
+    setmetatable(result,mt)
+    local rdt=result.dt
+    for k=1,#rdt do
+      local v=rdt[k]
+      if type(v)=="table" and not v.special then 
+        result.ri=k 
+        v.__p__=result 
+        break
+      end
+    end
+  end
+  if errorstr and errorstr~="" then
+    result.error=true
+  end
+  result.statistics={
+    entities={
+      decimals=dcache,
+      hexadecimals=hcache,
+      names=acache,
+    }
+  }
+  strip,utfize,resolve,resolve_predefined=nil,nil,nil,nil
+  unify_predefined,cleanup,entities=nil,nil,nil
+  stack,top,at,xmlns,errorstr=nil,nil,nil,nil,nil
+  acache,hcache,dcache=nil,nil,nil
+  reported_attribute_errors,mt,errorhandler=nil,nil,nil
+  return result
+end
+function xmlconvert(data,settings)
+  local ok,result=pcall(function() return _xmlconvert_(data,settings) end)
+  if ok then
+    return result
+  else
+    return _xmlconvert_("",settings)
+  end
+end
+xml.convert=xmlconvert
+function xml.inheritedconvert(data,xmldata) 
+  local settings=xmldata.settings
+  if settings then
+    settings.parent_root=xmldata 
+  end
+  local xc=xmlconvert(data,settings)
+  return xc
+end
+function xml.is_valid(root)
+  return root and root.dt and root.dt[1] and type(root.dt[1])=="table" and not root.dt[1].er
+end
+function xml.package(tag,attributes,data)
+  local ns,tg=match(tag,"^(.-):?([^:]+)$")
+  local t={ ns=ns,tg=tg,dt=data or "",at=attributes or {} }
+  setmetatable(t,mt)
+  return t
+end
+function xml.is_valid(root)
+  return root and not root.error
+end
+xml.errorhandler=report_xml
+function xml.load(filename,settings)
+  local data=""
+  if type(filename)=="string" then
+    local f=io.open(filename,'r') 
+    if f then
+      data=f:read("*all") 
+      f:close()
+    end
+  elseif filename then 
+    data=filename:read("*all") 
+  end
+  if settings then
+    settings.currentresource=filename
+    local result=xmlconvert(data,settings)
+    settings.currentresource=nil
+    return result
+  else
+    return xmlconvert(data,{ currentresource=filename })
+  end
+end
+local no_root={ no_root=true }
+function xml.toxml(data)
+  if type(data)=="string" then
+    local root={ xmlconvert(data,no_root) }
+    return (#root>1 and root) or root[1]
+  else
+    return data
+  end
+end
+local function copy(old,tables)
+  if old then
+    tables=tables or {}
+    local new={}
+    if not tables[old] then
+      tables[old]=new
+    end
+    for k,v in next,old do
+      new[k]=(type(v)=="table" and (tables[v] or copy(v,tables))) or v
+    end
+    local mt=getmetatable(old)
+    if mt then
+      setmetatable(new,mt)
+    end
+    return new
+  else
+    return {}
+  end
+end
+xml.copy=copy
+function xml.checkbom(root) 
+  if root.ri then
+    local dt=root.dt
+    for k=1,#dt do
+      local v=dt[k]
+      if type(v)=="table" and v.special and v.tg=="@pi@" and find(v.dt[1],"xml.*version=") then
+        return
+      end
+    end
+    insert(dt,1,{ special=true,ns="",tg="@pi@",dt={ "xml version='1.0' standalone='yes'" } } )
+    insert(dt,2,"\n" )
+  end
+end
+local function verbose_element(e,handlers) 
+  local handle=handlers.handle
+  local serialize=handlers.serialize
+  local ens,etg,eat,edt,ern=e.ns,e.tg,e.at,e.dt,e.rn
+  local ats=eat and next(eat) and {}
+  if ats then
+    for k,v in next,eat do
+      ats[#ats+1]=formatters['%s=%q'](k,escaped(v))
+    end
+  end
+  if ern and trace_entities and ern~=ens then
+    ens=ern
+  end
+  if ens~="" then
+    if edt and #edt>0 then
+      if ats then
+        handle("<",ens,":",etg," ",concat(ats," "),">")
+      else
+        handle("<",ens,":",etg,">")
+      end
+      for i=1,#edt do
+        local e=edt[i]
+        if type(e)=="string" then
+          handle(escaped(e))
+        else
+          serialize(e,handlers)
+        end
+      end
+      handle("</",ens,":",etg,">")
+    else
+      if ats then
+        handle("<",ens,":",etg," ",concat(ats," "),"/>")
+      else
+        handle("<",ens,":",etg,"/>")
+      end
+    end
+  else
+    if edt and #edt>0 then
+      if ats then
+        handle("<",etg," ",concat(ats," "),">")
+      else
+        handle("<",etg,">")
+      end
+      for i=1,#edt do
+        local e=edt[i]
+        if type(e)=="string" then
+          handle(escaped(e)) 
+        else
+          serialize(e,handlers)
+        end
+      end
+      handle("</",etg,">")
+    else
+      if ats then
+        handle("<",etg," ",concat(ats," "),"/>")
+      else
+        handle("<",etg,"/>")
+      end
+    end
+  end
+end
+local function verbose_pi(e,handlers)
+  handlers.handle("<?",e.dt[1],"?>")
+end
+local function verbose_comment(e,handlers)
+  handlers.handle("<!--",e.dt[1],"-->")
+end
+local function verbose_cdata(e,handlers)
+  handlers.handle("<![CDATA[",e.dt[1],"]]>")
+end
+local function verbose_doctype(e,handlers)
+  handlers.handle("<!DOCTYPE ",e.dt[1],">")
+end
+local function verbose_root(e,handlers)
+  handlers.serialize(e.dt,handlers)
+end
+local function verbose_text(e,handlers)
+  handlers.handle(escaped(e))
+end
+local function verbose_document(e,handlers)
+  local serialize=handlers.serialize
+  local functions=handlers.functions
+  for i=1,#e do
+    local ei=e[i]
+    if type(ei)=="string" then
+      functions["@tx@"](ei,handlers)
+    else
+      serialize(ei,handlers)
+    end
+  end
+end
+local function serialize(e,handlers,...)
+  if e then
+    local initialize=handlers.initialize
+    local finalize=handlers.finalize
+    local functions=handlers.functions
+    if initialize then
+      local state=initialize(...)
+      if not state==true then
+        return state
+      end
+    end
+    local etg=e.tg
+    if etg then
+      (functions[etg] or functions["@el@"])(e,handlers)
+    else
+      functions["@dc@"](e,handlers) 
+    end
+    if finalize then
+      return finalize()
+    end
+  end
+end
+local function xserialize(e,handlers)
+  local functions=handlers.functions
+  local etg=e.tg
+  if etg then
+    (functions[etg] or functions["@el@"])(e,handlers)
+  else
+    functions["@dc@"](e,handlers)
+  end
+end
+local handlers={}
+local function newhandlers(settings)
+  local t=table.copy(handlers[settings and settings.parent or "verbose"] or {}) 
+  if settings then
+    for k,v in next,settings do
+      if type(v)=="table" then
+        local tk=t[k] if not tk then tk={} t[k]=tk end
+        for kk,vv in next,v do
+          tk[kk]=vv
+        end
+      else
+        t[k]=v
+      end
+    end
+    if settings.name then
+      handlers[settings.name]=t
+    end
+  end
+  utilities.storage.mark(t)
+  return t
+end
+local nofunction=function() end
+function xml.sethandlersfunction(handler,name,fnc)
+  handler.functions[name]=fnc or nofunction
+end
+function xml.gethandlersfunction(handler,name)
+  return handler.functions[name]
+end
+function xml.gethandlers(name)
+  return handlers[name]
+end
+newhandlers {
+  name="verbose",
+  initialize=false,
+  finalize=false,
+  serialize=xserialize,
+  handle=print,
+  functions={
+    ["@dc@"]=verbose_document,
+    ["@dt@"]=verbose_doctype,
+    ["@rt@"]=verbose_root,
+    ["@el@"]=verbose_element,
+    ["@pi@"]=verbose_pi,
+    ["@cm@"]=verbose_comment,
+    ["@cd@"]=verbose_cdata,
+    ["@tx@"]=verbose_text,
+  }
+}
+local result
+local xmlfilehandler=newhandlers {
+  name="file",
+  initialize=function(name)
+    result=io.open(name,"wb")
+    return result
+  end,
+  finalize=function()
+    result:close()
+    return true
+  end,
+  handle=function(...)
+    result:write(...)
+  end,
+}
+function xml.save(root,name)
+  serialize(root,xmlfilehandler,name)
+end
+local result
+local xmlstringhandler=newhandlers {
+  name="string",
+  initialize=function()
+    result={}
+    return result
+  end,
+  finalize=function()
+    return concat(result)
+  end,
+  handle=function(...)
+    result[#result+1]=concat {... }
+  end,
+}
+local function xmltostring(root) 
+  if not root then
+    return ""
+  elseif type(root)=="string" then
+    return root
+  else 
+    return serialize(root,xmlstringhandler) or ""
+  end
+end
+local function __tostring(root) 
+  return (root and xmltostring(root)) or ""
+end
+initialize_mt=function(root) 
+  mt={ __tostring=__tostring,__index=root }
+end
+xml.defaulthandlers=handlers
+xml.newhandlers=newhandlers
+xml.serialize=serialize
+xml.tostring=xmltostring
+local function xmlstring(e,handle)
+  if not handle or (e.special and e.tg~="@rt@") then
+  elseif e.tg then
+    local edt=e.dt
+    if edt then
+      for i=1,#edt do
+        xmlstring(edt[i],handle)
+      end
+    end
+  else
+    handle(e)
+  end
+end
+xml.string=xmlstring
+function xml.settings(e)
+  while e do
+    local s=e.settings
+    if s then
+      return s
+    else
+      e=e.__p__
+    end
+  end
+  return nil
+end
+function xml.root(e)
+  local r=e
+  while e do
+    e=e.__p__
+    if e then
+      r=e
+    end
+  end
+  return r
+end
+function xml.parent(root)
+  return root.__p__
+end
+function xml.body(root)
+  return root.ri and root.dt[root.ri] or root 
+end
+function xml.name(root)
+  if not root then
+    return ""
+  end
+  local ns=root.ns
+  local tg=root.tg
+  if ns=="" then
+    return tg
+  else
+    return ns..":"..tg
+  end
+end
+function xml.erase(dt,k)
+  if dt then
+    if k then
+      dt[k]=""
+    else for k=1,#dt do
+      dt[1]={ "" }
+    end end
+  end
+end
+function xml.assign(dt,k,root)
+  if dt and k then
+    dt[k]=type(root)=="table" and xml.body(root) or root
+    return dt[k]
+  else
+    return xml.body(root)
+  end
+end
+function xml.tocdata(e,wrapper) 
+  local whatever=type(e)=="table" and xmltostring(e.dt) or e or ""
+  if wrapper then
+    whatever=formatters["<%s>%s</%s>"](wrapper,whatever,wrapper)
+  end
+  local t={ special=true,ns="",tg="@cd@",at={},rn="",dt={ whatever },__p__=e }
+  setmetatable(t,getmetatable(e))
+  e.dt={ t }
+end
+function xml.makestandalone(root)
+  if root.ri then
+    local dt=root.dt
+    for k=1,#dt do
+      local v=dt[k]
+      if type(v)=="table" and v.special and v.tg=="@pi@" then
+        local txt=v.dt[1]
+        if find(txt,"xml.*version=") then
+          v.dt[1]=txt.." standalone='yes'"
+          break
+        end
+      end
+    end
+  end
+  return root
+end
+function xml.kind(e)
+  local dt=e and e.dt
+  if dt then
+    local n=#dt
+    if n==1 then
+      local d=dt[1]
+      if d.special then
+        local tg=d.tg
+        if tg=="@cd@" then
+          return "cdata"
+        elseif tg=="@cm" then
+          return "comment"
+        elseif tg=="@pi@" then
+          return "instruction"
+        elseif tg=="@dt@" then
+          return "declaration"
+        end
+      elseif type(d)=="string" then
+        return "text"
+      end
+      return "element"
+    elseif n>0 then
+      return "mixed"
+    end
+  end
+  return "empty"
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["lxml-lpt"] = package.loaded["lxml-lpt"] or true
+
+-- original size: 48956, stripped down to: 30516
+
+if not modules then modules={} end modules ['lxml-lpt']={
+  version=1.001,
+  comment="this module is the basis for the lxml-* ones",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local concat,remove,insert=table.concat,table.remove,table.insert
+local type,next,tonumber,tostring,setmetatable,load,select=type,next,tonumber,tostring,setmetatable,load,select
+local format,upper,lower,gmatch,gsub,find,rep=string.format,string.upper,string.lower,string.gmatch,string.gsub,string.find,string.rep
+local lpegmatch,lpegpatterns=lpeg.match,lpeg.patterns
+local setmetatableindex=table.setmetatableindex
+local formatters=string.formatters
+local trace_lpath=false if trackers then trackers.register("xml.path",function(v) trace_lpath=v end) end
+local trace_lparse=false if trackers then trackers.register("xml.parse",function(v) trace_lparse=v end) end
+local trace_lprofile=false if trackers then trackers.register("xml.profile",function(v) trace_lpath=v trace_lparse=v trace_lprofile=v end) end
+local report_lpath=logs.reporter("xml","lpath")
+local xml=xml
+local lpathcalls=0 function xml.lpathcalls () return lpathcalls end
+local lpathcached=0 function xml.lpathcached() return lpathcached end
+xml.functions=xml.functions or {} 
+local functions=xml.functions
+xml.expressions=xml.expressions or {} 
+local expressions=xml.expressions
+xml.finalizers=xml.finalizers or {} 
+local finalizers=xml.finalizers
+xml.specialhandler=xml.specialhandler or {}
+local specialhandler=xml.specialhandler
+lpegpatterns.xml=lpegpatterns.xml or {}
+local xmlpatterns=lpegpatterns.xml
+finalizers.xml=finalizers.xml or {}
+finalizers.tex=finalizers.tex or {}
+local function fallback (t,name)
+  local fn=finalizers[name]
+  if fn then
+    t[name]=fn
+  else
+    report_lpath("unknown sub finalizer %a",name)
+    fn=function() end
+  end
+  return fn
+end
+setmetatableindex(finalizers.xml,fallback)
+setmetatableindex(finalizers.tex,fallback)
+xml.defaultprotocol="xml"
+local apply_axis={}
+apply_axis['root']=function(list)
+  local collected={}
+  for l=1,#list do
+    local ll=list[l]
+    local rt=ll
+    while ll do
+      ll=ll.__p__
+      if ll then
+        rt=ll
+      end
+    end
+    collected[l]=rt
+  end
+  return collected
+end
+apply_axis['self']=function(list)
+  return list
+end
+apply_axis['child']=function(list)
+  local collected,c={},0
+  for l=1,#list do
+    local ll=list[l]
+    local dt=ll.dt
+    if dt then 
+      local en=0
+      for k=1,#dt do
+        local dk=dt[k]
+        if dk.tg then
+          c=c+1
+          collected[c]=dk
+          dk.ni=k 
+          en=en+1
+          dk.ei=en
+        end
+      end
+      ll.en=en
+    end
+  end
+  return collected
+end
+local function collect(list,collected,c)
+  local dt=list.dt
+  if dt then
+    local en=0
+    for k=1,#dt do
+      local dk=dt[k]
+      if dk.tg then
+        c=c+1
+        collected[c]=dk
+        dk.ni=k 
+        en=en+1
+        dk.ei=en
+        c=collect(dk,collected,c)
+      end
+    end
+    list.en=en
+  end
+  return c
+end
+apply_axis['descendant']=function(list)
+  local collected,c={},0
+  for l=1,#list do
+    c=collect(list[l],collected,c)
+  end
+  return collected
+end
+local function collect(list,collected,c)
+  local dt=list.dt
+  if dt then
+    local en=0
+    for k=1,#dt do
+      local dk=dt[k]
+      if dk.tg then
+        c=c+1
+        collected[c]=dk
+        dk.ni=k 
+        en=en+1
+        dk.ei=en
+        c=collect(dk,collected,c)
+      end
+    end
+    list.en=en
+  end
+  return c
+end
+apply_axis['descendant-or-self']=function(list)
+  local collected,c={},0
+  for l=1,#list do
+    local ll=list[l]
+    if ll.special~=true then 
+      c=c+1
+      collected[c]=ll
+    end
+    c=collect(ll,collected,c)
+  end
+  return collected
+end
+apply_axis['ancestor']=function(list)
+  local collected,c={},0
+  for l=1,#list do
+    local ll=list[l]
+    while ll do
+      ll=ll.__p__
+      if ll then
+        c=c+1
+        collected[c]=ll
+      end
+    end
+  end
+  return collected
+end
+apply_axis['ancestor-or-self']=function(list)
+  local collected,c={},0
+  for l=1,#list do
+    local ll=list[l]
+    c=c+1
+    collected[c]=ll
+    while ll do
+      ll=ll.__p__
+      if ll then
+        c=c+1
+        collected[c]=ll
+      end
+    end
+  end
+  return collected
+end
+apply_axis['parent']=function(list)
+  local collected,c={},0
+  for l=1,#list do
+    local pl=list[l].__p__
+    if pl then
+      c=c+1
+      collected[c]=pl
+    end
+  end
+  return collected
+end
+apply_axis['attribute']=function(list)
+  return {}
+end
+apply_axis['namespace']=function(list)
+  return {}
+end
+apply_axis['following']=function(list)
+  return {}
+end
+apply_axis['preceding']=function(list)
+  return {}
+end
+apply_axis['following-sibling']=function(list)
+  local collected,c={},0
+  for l=1,#list do
+    local ll=list[l]
+    local p=ll.__p__
+    local d=p.dt
+    for i=ll.ni+1,#d do
+      local di=d[i]
+      if type(di)=="table" then
+        c=c+1
+        collected[c]=di
+      end
+    end
+  end
+  return collected
+end
+apply_axis['preceding-sibling']=function(list)
+  local collected,c={},0
+  for l=1,#list do
+    local ll=list[l]
+    local p=ll.__p__
+    local d=p.dt
+    for i=1,ll.ni-1 do
+      local di=d[i]
+      if type(di)=="table" then
+        c=c+1
+        collected[c]=di
+      end
+    end
+  end
+  return collected
+end
+apply_axis['reverse-sibling']=function(list) 
+  local collected,c={},0
+  for l=1,#list do
+    local ll=list[l]
+    local p=ll.__p__
+    local d=p.dt
+    for i=ll.ni-1,1,-1 do
+      local di=d[i]
+      if type(di)=="table" then
+        c=c+1
+        collected[c]=di
+      end
+    end
+  end
+  return collected
+end
+apply_axis['auto-descendant-or-self']=apply_axis['descendant-or-self']
+apply_axis['auto-descendant']=apply_axis['descendant']
+apply_axis['auto-child']=apply_axis['child']
+apply_axis['auto-self']=apply_axis['self']
+apply_axis['initial-child']=apply_axis['child']
+local function apply_nodes(list,directive,nodes)
+  local maxn=#nodes
+  if maxn==3 then 
+    local nns,ntg=nodes[2],nodes[3]
+    if not nns and not ntg then 
+      if directive then
+        return list
+      else
+        return {}
+      end
+    else
+      local collected,c,m,p={},0,0,nil
+      if not nns then 
+        for l=1,#list do
+          local ll=list[l]
+          local ltg=ll.tg
+          if ltg then
+            if directive then
+              if ntg==ltg then
+                local llp=ll.__p__;if llp~=p then p,m=llp,1 else m=m+1 end
+                c=c+1
+                collected[c],ll.mi=ll,m
+              end
+            elseif ntg~=ltg then
+              local llp=ll.__p__;if llp~=p then p,m=llp,1 else m=m+1 end
+              c=c+1
+              collected[c],ll.mi=ll,m
+            end
+          end
+        end
+      elseif not ntg then 
+        for l=1,#list do
+          local ll=list[l]
+          local lns=ll.rn or ll.ns
+          if lns then
+            if directive then
+              if lns==nns then
+                local llp=ll.__p__;if llp~=p then p,m=llp,1 else m=m+1 end
+                c=c+1
+                collected[c],ll.mi=ll,m
+              end
+            elseif lns~=nns then
+              local llp=ll.__p__;if llp~=p then p,m=llp,1 else m=m+1 end
+              c=c+1
+              collected[c],ll.mi=ll,m
+            end
+          end
+        end
+      else 
+        for l=1,#list do
+          local ll=list[l]
+          local ltg=ll.tg
+          if ltg then
+            local lns=ll.rn or ll.ns
+            local ok=ltg==ntg and lns==nns
+            if directive then
+              if ok then
+                local llp=ll.__p__;if llp~=p then p,m=llp,1 else m=m+1 end
+                c=c+1
+                collected[c],ll.mi=ll,m
+              end
+            elseif not ok then
+              local llp=ll.__p__;if llp~=p then p,m=llp,1 else m=m+1 end
+              c=c+1
+              collected[c],ll.mi=ll,m
+            end
+          end
+        end
+      end
+      return collected
+    end
+  else
+    local collected,c,m,p={},0,0,nil
+    for l=1,#list do
+      local ll=list[l]
+      local ltg=ll.tg
+      if ltg then
+        local lns=ll.rn or ll.ns
+        local ok=false
+        for n=1,maxn,3 do
+          local nns,ntg=nodes[n+1],nodes[n+2]
+          ok=(not ntg or ltg==ntg) and (not nns or lns==nns)
+          if ok then
+            break
+          end
+        end
+        if directive then
+          if ok then
+            local llp=ll.__p__;if llp~=p then p,m=llp,1 else m=m+1 end
+            c=c+1
+            collected[c],ll.mi=ll,m
+          end
+        elseif not ok then
+          local llp=ll.__p__;if llp~=p then p,m=llp,1 else m=m+1 end
+          c=c+1
+          collected[c],ll.mi=ll,m
+        end
+      end
+    end
+    return collected
+  end
+end
+local quit_expression=false
+local function apply_expression(list,expression,order)
+  local collected,c={},0
+  quit_expression=false
+  for l=1,#list do
+    local ll=list[l]
+    if expression(list,ll,l,order) then 
+      c=c+1
+      collected[c]=ll
+    end
+    if quit_expression then
+      break
+    end
+  end
+  return collected
+end
+local P,V,C,Cs,Cc,Ct,R,S,Cg,Cb=lpeg.P,lpeg.V,lpeg.C,lpeg.Cs,lpeg.Cc,lpeg.Ct,lpeg.R,lpeg.S,lpeg.Cg,lpeg.Cb
+local spaces=S(" \n\r\t\f")^0
+local lp_space=S(" \n\r\t\f")
+local lp_any=P(1)
+local lp_noequal=P("!=")/"~="+P("<=")+P(">=")+P("==")
+local lp_doequal=P("=")/"=="
+local lp_or=P("|")/" or "
+local lp_and=P("&")/" and "
+local lp_builtin=P (
+    P("text")/"(ll.dt[1] or '')"+
+    P("content")/"ll.dt"+
+    P("name")/"((ll.ns~='' and ll.ns..':'..ll.tg) or ll.tg)"+P("tag")/"ll.tg"+P("position")/"l"+
+    P("firstindex")/"1"+P("lastindex")/"(#ll.__p__.dt or 1)"+P("firstelement")/"1"+P("lastelement")/"(ll.__p__.en or 1)"+P("first")/"1"+P("last")/"#list"+P("rootposition")/"order"+P("order")/"order"+P("element")/"(ll.ei or 1)"+P("index")/"(ll.ni or 1)"+P("match")/"(ll.mi or 1)"+
+    P("ns")/"ll.ns"
+  )*((spaces*P("(")*spaces*P(")"))/"")
+local lp_attribute=(P("@")+P("attribute::"))/""*Cc("(ll.at and ll.at['")*((R("az","AZ")+S("-_:"))^1)*Cc("'])")
+lp_fastpos_p=P("+")^0*R("09")^1*P(-1)/"l==%0"
+lp_fastpos_n=P("-")*R("09")^1*P(-1)/"(%0<0 and (#list+%0==l))"
+local lp_fastpos=lp_fastpos_n+lp_fastpos_p
+local lp_reserved=C("and")+C("or")+C("not")+C("div")+C("mod")+C("true")+C("false")
+local lp_lua_function=Cs((R("az","AZ","__")^1*(P(".")*R("az","AZ","__")^1)^1)*("("))/"%0"
+local lp_function=C(R("az","AZ","__")^1)*P("(")/function(t) 
+  if expressions[t] then
+    return "expr."..t.."("
+  else
+    return "expr.error("
+  end
+end
+local lparent=P("(")
+local rparent=P(")")
+local noparent=1-(lparent+rparent)
+local nested=P{lparent*(noparent+V(1))^0*rparent}
+local value=P(lparent*C((noparent+nested)^0)*rparent) 
+local lp_child=Cc("expr.child(ll,'")*R("az","AZ","--","__")^1*Cc("')")
+local lp_number=S("+-")*R("09")^1
+local lp_string=Cc("'")*R("az","AZ","--","__")^1*Cc("'")
+local lp_content=(P("'")*(1-P("'"))^0*P("'")+P('"')*(1-P('"'))^0*P('"'))
+local cleaner
+local lp_special=(C(P("name")+P("text")+P("tag")+P("count")+P("child")))*value/function(t,s)
+  if expressions[t] then
+    s=s and s~="" and lpegmatch(cleaner,s)
+    if s and s~="" then
+      return "expr."..t.."(ll,"..s..")"
+    else
+      return "expr."..t.."(ll)"
+    end
+  else
+    return "expr.error("..t..")"
+  end
+end
+local content=lp_builtin+lp_attribute+lp_special+lp_noequal+lp_doequal+lp_or+lp_and+lp_reserved+lp_lua_function+lp_function+lp_content+
+  lp_child+lp_any
+local converter=Cs (
+  lp_fastpos+(P { lparent*(V(1))^0*rparent+content } )^0
+)
+cleaner=Cs ((
+  lp_reserved+lp_number+lp_string+1 )^1 )
+local template_e=[[
+    local expr = xml.expressions
+    return function(list,ll,l,order)
+        return %s
+    end
+]]
+local template_f_y=[[
+    local finalizer = xml.finalizers['%s']['%s']
+    return function(collection)
+        return finalizer(collection,%s)
+    end
+]]
+local template_f_n=[[
+    return xml.finalizers['%s']['%s']
+]]
+local register_self={ kind="axis",axis="self"          } 
+local register_parent={ kind="axis",axis="parent"         } 
+local register_descendant={ kind="axis",axis="descendant"       } 
+local register_child={ kind="axis",axis="child"          } 
+local register_descendant_or_self={ kind="axis",axis="descendant-or-self"   } 
+local register_root={ kind="axis",axis="root"          } 
+local register_ancestor={ kind="axis",axis="ancestor"        } 
+local register_ancestor_or_self={ kind="axis",axis="ancestor-or-self"    } 
+local register_attribute={ kind="axis",axis="attribute"        } 
+local register_namespace={ kind="axis",axis="namespace"        } 
+local register_following={ kind="axis",axis="following"        } 
+local register_following_sibling={ kind="axis",axis="following-sibling"    } 
+local register_preceding={ kind="axis",axis="preceding"        } 
+local register_preceding_sibling={ kind="axis",axis="preceding-sibling"    } 
+local register_reverse_sibling={ kind="axis",axis="reverse-sibling"     } 
+local register_auto_descendant_or_self={ kind="axis",axis="auto-descendant-or-self" } 
+local register_auto_descendant={ kind="axis",axis="auto-descendant"     } 
+local register_auto_self={ kind="axis",axis="auto-self"        } 
+local register_auto_child={ kind="axis",axis="auto-child"       } 
+local register_initial_child={ kind="axis",axis="initial-child"      } 
+local register_all_nodes={ kind="nodes",nodetest=true,nodes={ true,false,false } }
+local skip={}
+local function errorrunner_e(str,cnv)
+  if not skip[str] then
+    report_lpath("error in expression: %s => %s",str,cnv)
+    skip[str]=cnv or str
+  end
+  return false
+end
+local function errorrunner_f(str,arg)
+  report_lpath("error in finalizer: %s(%s)",str,arg or "")
+  return false
+end
+local function register_nodes(nodetest,nodes)
+  return { kind="nodes",nodetest=nodetest,nodes=nodes }
+end
+local function register_expression(expression)
+  local converted=lpegmatch(converter,expression)
+  local runner=load(format(template_e,converted))
+  runner=(runner and runner()) or function() errorrunner_e(expression,converted) end
+  return { kind="expression",expression=expression,converted=converted,evaluator=runner }
+end
+local function register_finalizer(protocol,name,arguments)
+  local runner
+  if arguments and arguments~="" then
+    runner=load(format(template_f_y,protocol or xml.defaultprotocol,name,arguments))
+  else
+    runner=load(format(template_f_n,protocol or xml.defaultprotocol,name))
+  end
+  runner=(runner and runner()) or function() errorrunner_f(name,arguments) end
+  return { kind="finalizer",name=name,arguments=arguments,finalizer=runner }
+end
+local expression=P { "ex",
+  ex="["*C((V("sq")+V("dq")+(1-S("[]"))+V("ex"))^0)*"]",
+  sq="'"*(1-S("'"))^0*"'",
+  dq='"'*(1-S('"'))^0*'"',
+}
+local arguments=P { "ar",
+  ar="("*Cs((V("sq")+V("dq")+V("nq")+P(1-P(")")))^0)*")",
+  nq=((1-S("),'\""))^1)/function(s) return format("%q",s) end,
+  sq=P("'")*(1-P("'"))^0*P("'"),
+  dq=P('"')*(1-P('"'))^0*P('"'),
+}
+local function register_error(str)
+  return { kind="error",error=format("unparsed: %s",str) }
+end
+local special_1=P("*")*Cc(register_auto_descendant)*Cc(register_all_nodes) 
+local special_2=P("/")*Cc(register_auto_self)
+local special_3=P("")*Cc(register_auto_self)
+local no_nextcolon=P(-1)+#(1-P(":")) 
+local no_nextlparent=P(-1)+#(1-P("(")) 
+local pathparser=Ct { "patterns",
+  patterns=spaces*V("protocol")*spaces*(
+               (V("special")*spaces*P(-1)                             )+(V("initial")*spaces*V("step")*spaces*(P("/")*spaces*V("step")*spaces)^0 )
+              ),
+  protocol=Cg(V("letters"),"protocol")*P("://")+Cg(Cc(nil),"protocol"),
+  step=((V("shortcuts")+P("/")+V("axis"))*spaces*V("nodes")^0+V("error"))*spaces*V("expressions")^0*spaces*V("finalizer")^0,
+  axis=V("descendant")+V("child")+V("parent")+V("self")+V("root")+V("ancestor")+V("descendant_or_self")+V("following_sibling")+V("following")+V("reverse_sibling")+V("preceding_sibling")+V("preceding")+V("ancestor_or_self")+#(1-P(-1))*Cc(register_auto_child),
+  special=special_1+special_2+special_3,
+  initial=(P("/")*spaces*Cc(register_initial_child))^-1,
+  error=(P(1)^1)/register_error,
+  shortcuts_a=V("s_descendant_or_self")+V("s_descendant")+V("s_child")+V("s_parent")+V("s_self")+V("s_root")+V("s_ancestor"),
+  shortcuts=V("shortcuts_a")*(spaces*"/"*spaces*V("shortcuts_a"))^0,
+  s_descendant_or_self=(P("***/")+P("/"))*Cc(register_descendant_or_self),
+  s_descendant=P("**")*Cc(register_descendant),
+  s_child=P("*")*no_nextcolon*Cc(register_child   ),
+  s_parent=P("..")*Cc(register_parent  ),
+  s_self=P("." )*Cc(register_self   ),
+  s_root=P("^^")*Cc(register_root   ),
+  s_ancestor=P("^")*Cc(register_ancestor ),
+  descendant=P("descendant::")*Cc(register_descendant     ),
+  child=P("child::")*Cc(register_child       ),
+  parent=P("parent::")*Cc(register_parent       ),
+  self=P("self::")*Cc(register_self        ),
+  root=P('root::')*Cc(register_root        ),
+  ancestor=P('ancestor::')*Cc(register_ancestor      ),
+  descendant_or_self=P('descendant-or-self::')*Cc(register_descendant_or_self ),
+  ancestor_or_self=P('ancestor-or-self::')*Cc(register_ancestor_or_self  ),
+  following=P('following::')*Cc(register_following     ),
+  following_sibling=P('following-sibling::')*Cc(register_following_sibling ),
+  preceding=P('preceding::')*Cc(register_preceding     ),
+  preceding_sibling=P('preceding-sibling::')*Cc(register_preceding_sibling ),
+  reverse_sibling=P('reverse-sibling::')*Cc(register_reverse_sibling  ),
+  nodes=(V("nodefunction")*spaces*P("(")*V("nodeset")*P(")")+V("nodetest")*V("nodeset"))/register_nodes,
+  expressions=expression/register_expression,
+  letters=R("az")^1,
+  name=(1-S("/[]()|:*!"))^1,
+  negate=P("!")*Cc(false),
+  nodefunction=V("negate")+P("not")*Cc(false)+Cc(true),
+  nodetest=V("negate")+Cc(true),
+  nodename=(V("negate")+Cc(true))*spaces*((V("wildnodename")*P(":")*V("wildnodename"))+(Cc(false)*V("wildnodename"))),
+  wildnodename=(C(V("name"))+P("*")*Cc(false))*no_nextlparent,
+  nodeset=spaces*Ct(V("nodename")*(spaces*P("|")*spaces*V("nodename"))^0)*spaces,
+  finalizer=(Cb("protocol")*P("/")^-1*C(V("name"))*arguments*P(-1))/register_finalizer,
+}
+xmlpatterns.pathparser=pathparser
+local cache={}
+local function nodesettostring(set,nodetest)
+  local t={}
+  for i=1,#set,3 do
+    local directive,ns,tg=set[i],set[i+1],set[i+2]
+    if not ns or ns=="" then ns="*" end
+    if not tg or tg=="" then tg="*" end
+    tg=(tg=="@rt@" and "[root]") or format("%s:%s",ns,tg)
+    t[i]=(directive and tg) or format("not(%s)",tg)
+  end
+  if nodetest==false then
+    return format("not(%s)",concat(t,"|"))
+  else
+    return concat(t,"|")
+  end
+end
+local function tagstostring(list)
+  if #list==0 then
+    return "no elements"
+  else
+    local t={}
+    for i=1,#list do
+      local li=list[i]
+      local ns,tg=li.ns,li.tg
+      if not ns or ns=="" then ns="*" end
+      if not tg or tg=="" then tg="*" end
+      t[i]=(tg=="@rt@" and "[root]") or format("%s:%s",ns,tg)
+    end
+    return concat(t," ")
+  end
+end
+xml.nodesettostring=nodesettostring
+local lpath 
+local lshowoptions={ functions=false }
+local function lshow(parsed)
+  if type(parsed)=="string" then
+    parsed=lpath(parsed)
+  end
+  report_lpath("%s://%s => %s",parsed.protocol or xml.defaultprotocol,parsed.pattern,
+    table.serialize(parsed,false,lshowoptions))
+end
+xml.lshow=lshow
+local function add_comment(p,str)
+  local pc=p.comment
+  if not pc then
+    p.comment={ str }
+  else
+    pc[#pc+1]=str
+  end
+end
+lpath=function (pattern) 
+  lpathcalls=lpathcalls+1
+  if type(pattern)=="table" then
+    return pattern
+  else
+    local parsed=cache[pattern]
+    if parsed then
+      lpathcached=lpathcached+1
+    else
+      parsed=lpegmatch(pathparser,pattern)
+      if parsed then
+        parsed.pattern=pattern
+        local np=#parsed
+        if np==0 then
+          parsed={ pattern=pattern,register_self,state="parsing error" }
+          report_lpath("parsing error in pattern: %s",pattern)
+          lshow(parsed)
+        else
+          local pi=parsed[1]
+          if pi.axis=="auto-child" then
+            if false then
+              add_comment(parsed,"auto-child replaced by auto-descendant-or-self")
+              parsed[1]=register_auto_descendant_or_self
+            else
+              add_comment(parsed,"auto-child replaced by auto-descendant")
+              parsed[1]=register_auto_descendant
+            end
+          elseif pi.axis=="initial-child" and np>1 and parsed[2].axis then
+            add_comment(parsed,"initial-child removed") 
+            remove(parsed,1)
+          end
+          local np=#parsed 
+          if np>1 then
+            local pnp=parsed[np]
+            if pnp.kind=="nodes" and pnp.nodetest==true then
+              local nodes=pnp.nodes
+              if nodes[1]==true and nodes[2]==false and nodes[3]==false then
+                add_comment(parsed,"redundant final wildcard filter removed")
+                remove(parsed,np)
+              end
+            end
+          end
+        end
+      else
+        parsed={ pattern=pattern }
+      end
+      cache[pattern]=parsed
+      if trace_lparse and not trace_lprofile then
+        lshow(parsed)
+      end
+    end
+    return parsed
+  end
+end
+xml.lpath=lpath
+local profiled={} xml.profiled=profiled
+local function profiled_apply(list,parsed,nofparsed,order)
+  local p=profiled[parsed.pattern]
+  if p then
+    p.tested=p.tested+1
+  else
+    p={ tested=1,matched=0,finalized=0 }
+    profiled[parsed.pattern]=p
+  end
+  local collected=list
+  for i=1,nofparsed do
+    local pi=parsed[i]
+    local kind=pi.kind
+    if kind=="axis" then
+      collected=apply_axis[pi.axis](collected)
+    elseif kind=="nodes" then
+      collected=apply_nodes(collected,pi.nodetest,pi.nodes)
+    elseif kind=="expression" then
+      collected=apply_expression(collected,pi.evaluator,order)
+    elseif kind=="finalizer" then
+      collected=pi.finalizer(collected) 
+      p.matched=p.matched+1
+      p.finalized=p.finalized+1
+      return collected
+    end
+    if not collected or #collected==0 then
+      local pn=i<nofparsed and parsed[nofparsed]
+      if pn and pn.kind=="finalizer" then
+        collected=pn.finalizer(collected)
+        p.finalized=p.finalized+1
+        return collected
+      end
+      return nil
+    end
+  end
+  if collected then
+    p.matched=p.matched+1
+  end
+  return collected
+end
+local function traced_apply(list,parsed,nofparsed,order)
+  if trace_lparse then
+    lshow(parsed)
+  end
+  report_lpath("collecting: %s",parsed.pattern)
+  report_lpath("root tags : %s",tagstostring(list))
+  report_lpath("order     : %s",order or "unset")
+  local collected=list
+  for i=1,nofparsed do
+    local pi=parsed[i]
+    local kind=pi.kind
+    if kind=="axis" then
+      collected=apply_axis[pi.axis](collected)
+      report_lpath("% 10i : ax : %s",(collected and #collected) or 0,pi.axis)
+    elseif kind=="nodes" then
+      collected=apply_nodes(collected,pi.nodetest,pi.nodes)
+      report_lpath("% 10i : ns : %s",(collected and #collected) or 0,nodesettostring(pi.nodes,pi.nodetest))
+    elseif kind=="expression" then
+      collected=apply_expression(collected,pi.evaluator,order)
+      report_lpath("% 10i : ex : %s -> %s",(collected and #collected) or 0,pi.expression,pi.converted)
+    elseif kind=="finalizer" then
+      collected=pi.finalizer(collected)
+      report_lpath("% 10i : fi : %s : %s(%s)",(type(collected)=="table" and #collected) or 0,parsed.protocol or xml.defaultprotocol,pi.name,pi.arguments or "")
+      return collected
+    end
+    if not collected or #collected==0 then
+      local pn=i<nofparsed and parsed[nofparsed]
+      if pn and pn.kind=="finalizer" then
+        collected=pn.finalizer(collected)
+        report_lpath("% 10i : fi : %s : %s(%s)",(type(collected)=="table" and #collected) or 0,parsed.protocol or xml.defaultprotocol,pn.name,pn.arguments or "")
+        return collected
+      end
+      return nil
+    end
+  end
+  return collected
+end
+local function normal_apply(list,parsed,nofparsed,order)
+  local collected=list
+  for i=1,nofparsed do
+    local pi=parsed[i]
+    local kind=pi.kind
+    if kind=="axis" then
+      local axis=pi.axis
+      if axis~="self" then
+        collected=apply_axis[axis](collected)
+      end
+    elseif kind=="nodes" then
+      collected=apply_nodes(collected,pi.nodetest,pi.nodes)
+    elseif kind=="expression" then
+      collected=apply_expression(collected,pi.evaluator,order)
+    elseif kind=="finalizer" then
+      return pi.finalizer(collected)
+    end
+    if not collected or #collected==0 then
+      local pf=i<nofparsed and parsed[nofparsed].finalizer
+      if pf then
+        return pf(collected) 
+      end
+      return nil
+    end
+  end
+  return collected
+end
+local function applylpath(list,pattern)
+  if not list then
+    return
+  end
+  local parsed=cache[pattern]
+  if parsed then
+    lpathcalls=lpathcalls+1
+    lpathcached=lpathcached+1
+  elseif type(pattern)=="table" then
+    lpathcalls=lpathcalls+1
+    parsed=pattern
+  else
+    parsed=lpath(pattern) or pattern
+  end
+  if not parsed then
+    return
+  end
+  local nofparsed=#parsed
+  if nofparsed==0 then
+    return 
+  end
+  if not trace_lpath then
+    return normal_apply ({ list },parsed,nofparsed,list.mi)
+  elseif trace_lprofile then
+    return profiled_apply({ list },parsed,nofparsed,list.mi)
+  else
+    return traced_apply ({ list },parsed,nofparsed,list.mi)
+  end
+end
+xml.applylpath=applylpath
+function xml.filter(root,pattern) 
+  return applylpath(root,pattern)
+end
+expressions.child=function(e,pattern)
+  return applylpath(e,pattern) 
+end
+expressions.count=function(e,pattern) 
+  local collected=applylpath(e,pattern) 
+  return pattern and (collected and #collected) or 0
+end
+expressions.oneof=function(s,...)
+  for i=1,select("#",...) do
+    if s==select(i,...) then
+      return true
+    end
+  end
+  return false
+end
+expressions.error=function(str)
+  xml.errorhandler(format("unknown function in lpath expression: %s",tostring(str or "?")))
+  return false
+end
+expressions.undefined=function(s)
+  return s==nil
+end
+expressions.quit=function(s)
+  if s or s==nil then
+    quit_expression=true
+  end
+  return true
+end
+expressions.print=function(...)
+  print(...)
+  return true
+end
+expressions.contains=find
+expressions.find=find
+expressions.upper=upper
+expressions.lower=lower
+expressions.number=tonumber
+expressions.boolean=toboolean
+function expressions.contains(str,pattern)
+  local t=type(str)
+  if t=="string" then
+    if find(str,pattern) then
+      return true
+    end
+  elseif t=="table" then
+    for i=1,#str do
+      local d=str[i]
+      if type(d)=="string" and find(d,pattern) then
+        return true
+      end
+    end
+  end
+  return false
+end
+local function traverse(root,pattern,handle)
+  local collected=applylpath(root,pattern)
+  if collected then
+    for c=1,#collected do
+      local e=collected[c]
+      local r=e.__p__
+      handle(r,r.dt,e.ni)
+    end
+  end
+end
+local function selection(root,pattern,handle)
+  local collected=applylpath(root,pattern)
+  if collected then
+    if handle then
+      for c=1,#collected do
+        handle(collected[c])
+      end
+    else
+      return collected
+    end
+  end
+end
+xml.traverse=traverse      
+xml.selection=selection
+local function dofunction(collected,fnc,...)
+  if collected then
+    local f=functions[fnc]
+    if f then
+      for c=1,#collected do
+        f(collected[c],...)
+      end
+    else
+      report_lpath("unknown function %a",fnc)
+    end
+  end
+end
+finalizers.xml["function"]=dofunction
+finalizers.tex["function"]=dofunction
+expressions.text=function(e,n)
+  local rdt=e.__p__.dt
+  return rdt and rdt[n] or ""
+end
+expressions.name=function(e,n) 
+  local found=false
+  n=tonumber(n) or 0
+  if n==0 then
+    found=type(e)=="table" and e
+  elseif n<0 then
+    local d,k=e.__p__.dt,e.ni
+    for i=k-1,1,-1 do
+      local di=d[i]
+      if type(di)=="table" then
+        if n==-1 then
+          found=di
+          break
+        else
+          n=n+1
+        end
+      end
+    end
+  else
+    local d,k=e.__p__.dt,e.ni
+    for i=k+1,#d,1 do
+      local di=d[i]
+      if type(di)=="table" then
+        if n==1 then
+          found=di
+          break
+        else
+          n=n-1
+        end
+      end
+    end
+  end
+  if found then
+    local ns,tg=found.rn or found.ns or "",found.tg
+    if ns~="" then
+      return ns..":"..tg
+    else
+      return tg
+    end
+  else
+    return ""
+  end
+end
+expressions.tag=function(e,n) 
+  if not e then
+    return ""
+  else
+    local found=false
+    n=tonumber(n) or 0
+    if n==0 then
+      found=(type(e)=="table") and e 
+    elseif n<0 then
+      local d,k=e.__p__.dt,e.ni
+      for i=k-1,1,-1 do
+        local di=d[i]
+        if type(di)=="table" then
+          if n==-1 then
+            found=di
+            break
+          else
+            n=n+1
+          end
+        end
+      end
+    else
+      local d,k=e.__p__.dt,e.ni
+      for i=k+1,#d,1 do
+        local di=d[i]
+        if type(di)=="table" then
+          if n==1 then
+            found=di
+            break
+          else
+            n=n-1
+          end
+        end
+      end
+    end
+    return (found and found.tg) or ""
+  end
+end
+local dummy=function() end
+function xml.elements(root,pattern,reverse) 
+  local collected=applylpath(root,pattern)
+  if not collected then
+    return dummy
+  elseif reverse then
+    local c=#collected+1
+    return function()
+      if c>1 then
+        c=c-1
+        local e=collected[c]
+        local r=e.__p__
+        return r,r.dt,e.ni
+      end
+    end
+  else
+    local n,c=#collected,0
+    return function()
+      if c<n then
+        c=c+1
+        local e=collected[c]
+        local r=e.__p__
+        return r,r.dt,e.ni
+      end
+    end
+  end
+end
+function xml.collected(root,pattern,reverse) 
+  local collected=applylpath(root,pattern)
+  if not collected then
+    return dummy
+  elseif reverse then
+    local c=#collected+1
+    return function()
+      if c>1 then
+        c=c-1
+        return collected[c]
+      end
+    end
+  else
+    local n,c=#collected,0
+    return function()
+      if c<n then
+        c=c+1
+        return collected[c]
+      end
+    end
+  end
+end
+function xml.inspect(collection,pattern)
+  pattern=pattern or "."
+  for e in xml.collected(collection,pattern or ".") do
+    report_lpath("pattern: %s\n\n%s\n",pattern,xml.tostring(e))
+  end
+end
+local function split(e)
+  local dt=e.dt
+  if dt then
+    for i=1,#dt do
+      local dti=dt[i]
+      if type(dti)=="string" then
+        dti=gsub(dti,"^[\n\r]*(.-)[\n\r]*","%1")
+        dti=gsub(dti,"[\n\r]+","\n\n")
+        dt[i]=dti
+      else
+        split(dti)
+      end
+    end
+  end
+  return e
+end
+function xml.finalizers.paragraphs(c)
+  for i=1,#c do
+    split(c[i])
+  end
+  return c
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["lxml-mis"] = package.loaded["lxml-mis"] or true
+
+-- original size: 3684, stripped down to: 1957
+
+if not modules then modules={} end modules ['lxml-mis']={
+  version=1.001,
+  comment="this module is the basis for the lxml-* ones",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local xml,lpeg,string=xml,lpeg,string
+local concat=table.concat
+local type,next,tonumber,tostring,setmetatable,loadstring=type,next,tonumber,tostring,setmetatable,loadstring
+local format,gsub,match=string.format,string.gsub,string.match
+local lpegmatch,lpegpatterns=lpeg.match,lpeg.patterns
+local P,S,R,C,V,Cc,Cs=lpeg.P,lpeg.S,lpeg.R,lpeg.C,lpeg.V,lpeg.Cc,lpeg.Cs
+lpegpatterns.xml=lpegpatterns.xml or {}
+local xmlpatterns=lpegpatterns.xml
+local function xmlgsub(t,old,new) 
+  local dt=t.dt
+  if dt then
+    for k=1,#dt do
+      local v=dt[k]
+      if type(v)=="string" then
+        dt[k]=gsub(v,old,new)
+      else
+        xmlgsub(v,old,new)
+      end
+    end
+  end
+end
+function xml.stripleadingspaces(dk,d,k) 
+  if d and k then
+    local dkm=d[k-1]
+    if dkm and type(dkm)=="string" then
+      local s=match(dkm,"\n(%s+)")
+      xmlgsub(dk,"\n"..rep(" ",#s),"\n")
+    end
+  end
+end
+local normal=(1-S("<&>"))^0
+local special=P("<")/"&lt;"+P(">")/"&gt;"+P("&")/"&amp;"
+local escaped=Cs(normal*(special*normal)^0)
+local normal=(1-S"&")^0
+local special=P("&lt;")/"<"+P("&gt;")/">"+P("&amp;")/"&"
+local unescaped=Cs(normal*(special*normal)^0)
+local cleansed=Cs(((P("<")*(1-P(">"))^0*P(">"))/""+1)^0)
+xmlpatterns.escaped=escaped
+xmlpatterns.unescaped=unescaped
+xmlpatterns.cleansed=cleansed
+function xml.escaped (str) return lpegmatch(escaped,str)  end
+function xml.unescaped(str) return lpegmatch(unescaped,str) end
+function xml.cleansed (str) return lpegmatch(cleansed,str) end
+function xml.fillin(root,pattern,str,check)
+  local e=xml.first(root,pattern)
+  if e then
+    local n=#e.dt
+    if not check or n==0 or (n==1 and e.dt[1]=="") then
+      e.dt={ str }
+    end
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["lxml-aux"] = package.loaded["lxml-aux"] or true
+
+-- original size: 23804, stripped down to: 16817
+
+if not modules then modules={} end modules ['lxml-aux']={
+  version=1.001,
+  comment="this module is the basis for the lxml-* ones",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local trace_manipulations=false trackers.register("lxml.manipulations",function(v) trace_manipulations=v end)
+local report_xml=logs.reporter("xml")
+local xml=xml
+local xmlconvert,xmlcopy,xmlname=xml.convert,xml.copy,xml.name
+local xmlinheritedconvert=xml.inheritedconvert
+local xmlapplylpath=xml.applylpath
+local xmlfilter=xml.filter
+local type,setmetatable,getmetatable=type,setmetatable,getmetatable
+local insert,remove,fastcopy,concat=table.insert,table.remove,table.fastcopy,table.concat
+local gmatch,gsub,format,find,strip=string.gmatch,string.gsub,string.format,string.find,string.strip
+local utfbyte=utf.byte
+local function report(what,pattern,c,e)
+  report_xml("%s element %a, root %a, position %a, index %a, pattern %a",what,xmlname(e),xmlname(e.__p__),c,e.ni,pattern)
+end
+local function withelements(e,handle,depth)
+  if e and handle then
+    local edt=e.dt
+    if edt then
+      depth=depth or 0
+      for i=1,#edt do
+        local e=edt[i]
+        if type(e)=="table" then
+          handle(e,depth)
+          withelements(e,handle,depth+1)
+        end
+      end
+    end
+  end
+end
+xml.withelements=withelements
+function xml.withelement(e,n,handle) 
+  if e and n~=0 and handle then
+    local edt=e.dt
+    if edt then
+      if n>0 then
+        for i=1,#edt do
+          local ei=edt[i]
+          if type(ei)=="table" then
+            if n==1 then
+              handle(ei)
+              return
+            else
+              n=n-1
+            end
+          end
+        end
+      elseif n<0 then
+        for i=#edt,1,-1 do
+          local ei=edt[i]
+          if type(ei)=="table" then
+            if n==-1 then
+              handle(ei)
+              return
+            else
+              n=n+1
+            end
+          end
+        end
+      end
+    end
+  end
+end
+function xml.each(root,pattern,handle,reverse)
+  local collected=xmlapplylpath(root,pattern)
+  if collected then
+    if reverse then
+      for c=#collected,1,-1 do
+        handle(collected[c])
+      end
+    else
+      for c=1,#collected do
+        handle(collected[c])
+      end
+    end
+    return collected
+  end
+end
+function xml.processattributes(root,pattern,handle)
+  local collected=xmlapplylpath(root,pattern)
+  if collected and handle then
+    for c=1,#collected do
+      handle(collected[c].at)
+    end
+  end
+  return collected
+end
+function xml.collect(root,pattern)
+  return xmlapplylpath(root,pattern)
+end
+function xml.collecttexts(root,pattern,flatten) 
+  local collected=xmlapplylpath(root,pattern)
+  if collected and flatten then
+    local xmltostring=xml.tostring
+    for c=1,#collected do
+      collected[c]=xmltostring(collected[c].dt)
+    end
+  end
+  return collected or {}
+end
+function xml.collect_tags(root,pattern,nonamespace)
+  local collected=xmlapplylpath(root,pattern)
+  if collected then
+    local t,n={},0
+    for c=1,#collected do
+      local e=collected[c]
+      local ns,tg=e.ns,e.tg
+      n=n+1
+      if nonamespace then
+        t[n]=tg
+      elseif ns=="" then
+        t[n]=tg
+      else
+        t[n]=ns..":"..tg
+      end
+    end
+    return t
+  end
+end
+local no_root={ no_root=true }
+local function redo_ni(d)
+  for k=1,#d do
+    local dk=d[k]
+    if type(dk)=="table" then
+      dk.ni=k
+    end
+  end
+end
+local function xmltoelement(whatever,root)
+  if not whatever then
+    return nil
+  end
+  local element
+  if type(whatever)=="string" then
+    element=xmlinheritedconvert(whatever,root) 
+  else
+    element=whatever 
+  end
+  if element.error then
+    return whatever 
+  end
+  if element then
+  end
+  return element
+end
+xml.toelement=xmltoelement
+local function copiedelement(element,newparent)
+  if type(element)=="string" then
+    return element
+  else
+    element=xmlcopy(element).dt
+    if newparent and type(element)=="table" then
+      element.__p__=newparent
+    end
+    return element
+  end
+end
+function xml.delete(root,pattern)
+  if not pattern or pattern=="" then
+    local p=root.__p__
+    if p then
+      if trace_manipulations then
+        report('deleting',"--",c,root)
+      end
+      local d=p.dt
+      remove(d,root.ni)
+      redo_ni(d) 
+    end
+  else
+    local collected=xmlapplylpath(root,pattern)
+    if collected then
+      for c=1,#collected do
+        local e=collected[c]
+        local p=e.__p__
+        if p then
+          if trace_manipulations then
+            report('deleting',pattern,c,e)
+          end
+          local d=p.dt
+          remove(d,e.ni)
+          redo_ni(d) 
+        end
+      end
+    end
+  end
+end
+function xml.replace(root,pattern,whatever)
+  local element=root and xmltoelement(whatever,root)
+  local collected=element and xmlapplylpath(root,pattern)
+  if collected then
+    for c=1,#collected do
+      local e=collected[c]
+      local p=e.__p__
+      if p then
+        if trace_manipulations then
+          report('replacing',pattern,c,e)
+        end
+        local d=p.dt
+        d[e.ni]=copiedelement(element,p)
+        redo_ni(d) 
+      end
+    end
+  end
+end
+local function wrap(e,wrapper)
+  local t={
+    rn=e.rn,
+    tg=e.tg,
+    ns=e.ns,
+    at=e.at,
+    dt=e.dt,
+    __p__=e,
+  }
+  setmetatable(t,getmetatable(e))
+  e.rn=wrapper.rn or e.rn or ""
+  e.tg=wrapper.tg or e.tg or ""
+  e.ns=wrapper.ns or e.ns or ""
+  e.at=fastcopy(wrapper.at)
+  e.dt={ t }
+end
+function xml.wrap(root,pattern,whatever)
+  if whatever then
+    local wrapper=xmltoelement(whatever,root)
+    local collected=xmlapplylpath(root,pattern)
+    if collected then
+      for c=1,#collected do
+        local e=collected[c]
+        if trace_manipulations then
+          report('wrapping',pattern,c,e)
+        end
+        wrap(e,wrapper)
+      end
+    end
+  else
+    wrap(root,xmltoelement(pattern))
+  end
+end
+local function inject_element(root,pattern,whatever,prepend)
+  local element=root and xmltoelement(whatever,root)
+  local collected=element and xmlapplylpath(root,pattern)
+  local function inject_e(e)
+    local r=e.__p__
+    local d,k,rri=r.dt,e.ni,r.ri
+    local edt=(rri and d[rri].dt) or (d and d[k] and d[k].dt)
+    if edt then
+      local be,af
+      local cp=copiedelement(element,e)
+      if prepend then
+        be,af=cp,edt
+      else
+        be,af=edt,cp
+      end
+      local bn=#be
+      for i=1,#af do
+        bn=bn+1
+        be[bn]=af[i]
+      end
+      if rri then
+        r.dt[rri].dt=be
+      else
+        d[k].dt=be
+      end
+      redo_ni(d)
+    end
+  end
+  if not collected then
+  elseif collected.tg then
+    inject_e(collected)
+  else
+    for c=1,#collected do
+      inject_e(collected[c])
+    end
+  end
+end
+local function insert_element(root,pattern,whatever,before) 
+  local element=root and xmltoelement(whatever,root)
+  local collected=element and xmlapplylpath(root,pattern)
+  local function insert_e(e)
+    local r=e.__p__
+    local d,k=r.dt,e.ni
+    if not before then
+      k=k+1
+    end
+    insert(d,k,copiedelement(element,r))
+    redo_ni(d)
+  end
+  if not collected then
+  elseif collected.tg then
+    insert_e(collected)
+  else
+    for c=1,#collected do
+      insert_e(collected[c])
+    end
+  end
+end
+xml.insert_element=insert_element
+xml.insertafter=insert_element
+xml.insertbefore=function(r,p,e) insert_element(r,p,e,true) end
+xml.injectafter=inject_element
+xml.injectbefore=function(r,p,e) inject_element(r,p,e,true) end
+local function include(xmldata,pattern,attribute,recursive,loaddata)
+  pattern=pattern or 'include'
+  loaddata=loaddata or io.loaddata
+  local collected=xmlapplylpath(xmldata,pattern)
+  if collected then
+    for c=1,#collected do
+      local ek=collected[c]
+      local name=nil
+      local ekdt=ek.dt
+      local ekat=ek.at
+      local epdt=ek.__p__.dt
+      if not attribute or attribute=="" then
+        name=(type(ekdt)=="table" and ekdt[1]) or ekdt 
+      end
+      if not name then
+        for a in gmatch(attribute or "href","([^|]+)") do
+          name=ekat[a]
+          if name then break end
+        end
+      end
+      local data=(name and name~="" and loaddata(name)) or ""
+      if data=="" then
+        epdt[ek.ni]="" 
+      elseif ekat["parse"]=="text" then
+        epdt[ek.ni]=xml.escaped(data) 
+      else
+        local xi=xmlinheritedconvert(data,xmldata)
+        if not xi then
+          epdt[ek.ni]="" 
+        else
+          if recursive then
+            include(xi,pattern,attribute,recursive,loaddata)
+          end
+          epdt[ek.ni]=xml.body(xi) 
+        end
+      end
+    end
+  end
+end
+xml.include=include
+local function stripelement(e,nolines,anywhere)
+  local edt=e.dt
+  if edt then
+    if anywhere then
+      local t,n={},0
+      for e=1,#edt do
+        local str=edt[e]
+        if type(str)~="string" then
+          n=n+1
+          t[n]=str
+        elseif str~="" then
+          if nolines then
+            str=gsub(str,"%s+"," ")
+          end
+          str=gsub(str,"^%s*(.-)%s*$","%1")
+          if str~="" then
+            n=n+1
+            t[n]=str
+          end
+        end
+      end
+      e.dt=t
+    else
+      if #edt>0 then
+        local str=edt[1]
+        if type(str)~="string" then
+        elseif str=="" then
+          remove(edt,1)
+        else
+          if nolines then
+            str=gsub(str,"%s+"," ")
+          end
+          str=gsub(str,"^%s+","")
+          if str=="" then
+            remove(edt,1)
+          else
+            edt[1]=str
+          end
+        end
+      end
+      local nedt=#edt
+      if nedt>0 then
+        local str=edt[nedt]
+        if type(str)~="string" then
+        elseif str=="" then
+          remove(edt)
+        else
+          if nolines then
+            str=gsub(str,"%s+"," ")
+          end
+          str=gsub(str,"%s+$","")
+          if str=="" then
+            remove(edt)
+          else
+            edt[nedt]=str
+          end
+        end
+      end
+    end
+  end
+  return e 
+end
+xml.stripelement=stripelement
+function xml.strip(root,pattern,nolines,anywhere) 
+  local collected=xmlapplylpath(root,pattern) 
+  if collected then
+    for i=1,#collected do
+      stripelement(collected[i],nolines,anywhere)
+    end
+  end
+end
+local function renamespace(root,oldspace,newspace) 
+  local ndt=#root.dt
+  for i=1,ndt or 0 do
+    local e=root[i]
+    if type(e)=="table" then
+      if e.ns==oldspace then
+        e.ns=newspace
+        if e.rn then
+          e.rn=newspace
+        end
+      end
+      local edt=e.dt
+      if edt then
+        renamespace(edt,oldspace,newspace)
+      end
+    end
+  end
+end
+xml.renamespace=renamespace
+function xml.remaptag(root,pattern,newtg)
+  local collected=xmlapplylpath(root,pattern)
+  if collected then
+    for c=1,#collected do
+      collected[c].tg=newtg
+    end
+  end
+end
+function xml.remapnamespace(root,pattern,newns)
+  local collected=xmlapplylpath(root,pattern)
+  if collected then
+    for c=1,#collected do
+      collected[c].ns=newns
+    end
+  end
+end
+function xml.checknamespace(root,pattern,newns)
+  local collected=xmlapplylpath(root,pattern)
+  if collected then
+    for c=1,#collected do
+      local e=collected[c]
+      if (not e.rn or e.rn=="") and e.ns=="" then
+        e.rn=newns
+      end
+    end
+  end
+end
+function xml.remapname(root,pattern,newtg,newns,newrn)
+  local collected=xmlapplylpath(root,pattern)
+  if collected then
+    for c=1,#collected do
+      local e=collected[c]
+      e.tg,e.ns,e.rn=newtg,newns,newrn
+    end
+  end
+end
+function xml.cdatatotext(e)
+  local dt=e.dt
+  if #dt==1 then
+    local first=dt[1]
+    if first.tg=="@cd@" then
+      e.dt=first.dt
+    end
+  else
+  end
+end
+function xml.texttocdata(e) 
+  local dt=e.dt
+  local s=xml.tostring(dt) 
+  e.tg="@cd@"
+  e.special=true
+  e.ns=""
+  e.rn=""
+  e.dt={ s }
+  e.at=nil
+end
+function xml.elementtocdata(e) 
+  local dt=e.dt
+  local s=xml.tostring(e) 
+  e.tg="@cd@"
+  e.special=true
+  e.ns=""
+  e.rn=""
+  e.dt={ s }
+  e.at=nil
+end
+xml.builtinentities=table.tohash { "amp","quot","apos","lt","gt" } 
+local entities=characters and characters.entities or nil
+local builtinentities=xml.builtinentities
+function xml.addentitiesdoctype(root,option) 
+  if not entities then
+    require("char-ent")
+    entities=characters.entities
+  end
+  if entities and root and root.tg=="@rt@" and root.statistics then
+    local list={}
+    local hexify=option=="hexadecimal"
+    for k,v in table.sortedhash(root.statistics.entities.names) do
+      if not builtinentities[k] then
+        local e=entities[k]
+        if not e then
+          e=format("[%s]",k)
+        elseif hexify then
+          e=format("&#%05X;",utfbyte(k))
+        end
+        list[#list+1]=format("  <!ENTITY %s %q >",k,e)
+      end
+    end
+    local dt=root.dt
+    local n=dt[1].tg=="@pi@" and 2 or 1
+    if #list>0 then
+      insert(dt,n,{ "\n" })
+      insert(dt,n,{
+        tg="@dt@",
+        dt={ format("Something [\n%s\n] ",concat(list)) },
+        ns="",
+        special=true,
+      })
+      insert(dt,n,{ "\n\n" })
+    else
+    end
+  end
+end
+xml.all=xml.each
+xml.insert=xml.insertafter
+xml.inject=xml.injectafter
+xml.after=xml.insertafter
+xml.before=xml.insertbefore
+xml.process=xml.each
+xml.obsolete=xml.obsolete or {}
+local obsolete=xml.obsolete
+xml.strip_whitespace=xml.strip         obsolete.strip_whitespace=xml.strip
+xml.collect_elements=xml.collect        obsolete.collect_elements=xml.collect
+xml.delete_element=xml.delete        obsolete.delete_element=xml.delete
+xml.replace_element=xml.replace        obsolete.replace_element=xml.replacet
+xml.each_element=xml.each         obsolete.each_element=xml.each
+xml.process_elements=xml.process        obsolete.process_elements=xml.process
+xml.insert_element_after=xml.insertafter      obsolete.insert_element_after=xml.insertafter
+xml.insert_element_before=xml.insertbefore     obsolete.insert_element_before=xml.insertbefore
+xml.inject_element_after=xml.injectafter      obsolete.inject_element_after=xml.injectafter
+xml.inject_element_before=xml.injectbefore     obsolete.inject_element_before=xml.injectbefore
+xml.process_attributes=xml.processattributes   obsolete.process_attributes=xml.processattributes
+xml.collect_texts=xml.collecttexts     obsolete.collect_texts=xml.collecttexts
+xml.inject_element=xml.inject        obsolete.inject_element=xml.inject
+xml.remap_tag=xml.remaptag       obsolete.remap_tag=xml.remaptag
+xml.remap_name=xml.remapname       obsolete.remap_name=xml.remapname
+xml.remap_namespace=xml.remapnamespace    obsolete.remap_namespace=xml.remapnamespace
+function xml.cdata(e)
+  if e then
+    local dt=e.dt
+    if dt and #dt==1 then
+      local first=dt[1]
+      return first.tg=="@cd@" and first.dt[1] or ""
+    end
+  end
+  return ""
+end
+function xml.finalizers.xml.cdata(collected)
+  if collected then
+    local e=collected[1]
+    if e then
+      local dt=e.dt
+      if dt and #dt==1 then
+        local first=dt[1]
+        return first.tg=="@cd@" and first.dt[1] or ""
+      end
+    end
+  end
+  return ""
+end
+function xml.insertcomment(e,str,n) 
+  table.insert(e.dt,n or 1,{
+    tg="@cm@",
+    ns="",
+    special=true,
+    at={},
+    dt={ str },
+  })
+end
+function xml.setcdata(e,str) 
+  e.dt={ {
+    tg="@cd@",
+    ns="",
+    special=true,
+    at={},
+    dt={ str },
+  } }
+end
+function xml.separate(x,pattern)
+  local collected=xmlapplylpath(x,pattern)
+  if collected then
+    for c=1,#collected do
+      local e=collected[c]
+      local d=e.dt
+      if d==x then
+        report_xml("warning: xml.separate changes root")
+        x=d
+      end
+      local t,n={ "\n" },1
+      local i,nd=1,#d
+      while i<=nd do
+        while i<=nd do
+          local di=d[i]
+          if type(di)=="string" then
+            if di=="\n" or find(di,"^%s+$") then 
+              i=i+1
+            else
+              d[i]=strip(di)
+              break
+            end
+          else
+            break
+          end
+        end
+        if i>nd then
+          break
+        end
+        t[n+1]="\n"
+        t[n+2]=d[i]
+        t[n+3]="\n"
+        n=n+3
+        i=i+1
+      end
+      t[n+1]="\n"
+      setmetatable(t,getmetatable(d))
+      e.dt=t
+    end
+  end
+  return x
+end
+local helpers=xml.helpers or {}
+xml.helpers=helpers
+local function normal(e,action)
+  local edt=e.dt
+  if edt then
+    for i=1,#edt do
+      local str=edt[i]
+      if type(str)=="string" and str~="" then
+        edt[i]=action(str)
+      end
+    end
+  end
+end
+local function recurse(e,action)
+  local edt=e.dt
+  if edt then
+    for i=1,#edt do
+      local str=edt[i]
+      if type(str)~="string" then
+        recurse(str,action,recursive)
+      elseif str~="" then
+        edt[i]=action(str)
+      end
+    end
+  end
+end
+function helpers.recursetext(collected,action,recursive)
+  if recursive then
+    for i=1,#collected do
+      recurse(collected[i],action)
+    end
+  else
+    for i=1,#collected do
+      normal(collected[i],action)
+    end
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["lxml-xml"] = package.loaded["lxml-xml"] or true
+
+-- original size: 10274, stripped down to: 7538
+
+if not modules then modules={} end modules ['lxml-xml']={
+  version=1.001,
+  comment="this module is the basis for the lxml-* ones",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local concat=table.concat
+local find,lower,upper=string.find,string.lower,string.upper
+local xml=xml
+local finalizers=xml.finalizers.xml
+local xmlfilter=xml.filter 
+local xmltostring=xml.tostring
+local xmlserialize=xml.serialize
+local xmlcollected=xml.collected
+local xmlnewhandlers=xml.newhandlers
+local function first(collected) 
+  return collected and collected[1]
+end
+local function last(collected)
+  return collected and collected[#collected]
+end
+local function all(collected)
+  return collected
+end
+local reverse=table.reversed
+local function attribute(collected,name)
+  if collected and #collected>0 then
+    local at=collected[1].at
+    return at and at[name]
+  end
+end
+local function att(id,name)
+  local at=id.at
+  return at and at[name]
+end
+local function count(collected)
+  return collected and #collected or 0
+end
+local function position(collected,n)
+  if not collected then
+    return 0
+  end
+  local nc=#collected
+  if nc==0 then
+    return 0
+  end
+  n=tonumber(n) or 0
+  if n<0 then
+    return collected[nc+n+1]
+  elseif n>0 then
+    return collected[n]
+  else
+    return collected[1].mi or 0
+  end
+end
+local function match(collected)
+  return collected and #collected>0 and collected[1].mi or 0 
+end
+local function index(collected)
+  return collected and #collected>0 and collected[1].ni or 0 
+end
+local function attributes(collected,arguments)
+  if collected and #collected>0 then
+    local at=collected[1].at
+    if arguments then
+      return at[arguments]
+    elseif next(at) then
+      return at 
+    end
+  end
+end
+local function chainattribute(collected,arguments) 
+  if collected and #collected>0 then
+    local e=collected[1]
+    while e do
+      local at=e.at
+      if at then
+        local a=at[arguments]
+        if a then
+          return a
+        end
+      else
+        break 
+      end
+      e=e.__p__
+    end
+  end
+  return ""
+end
+local function raw(collected) 
+  if collected and #collected>0 then
+    local e=collected[1] or collected
+    return e and xmltostring(e) or "" 
+  else
+    return ""
+  end
+end
+local xmltexthandler=xmlnewhandlers {
+  name="string",
+  initialize=function()
+    result={}
+    return result
+  end,
+  finalize=function()
+    return concat(result)
+  end,
+  handle=function(...)
+    result[#result+1]=concat {... }
+  end,
+  escape=false,
+}
+local function xmltotext(root)
+  local dt=root.dt
+  if not dt then
+    return ""
+  end
+  local nt=#dt 
+  if nt==0 then
+    return ""
+  elseif nt==1 and type(dt[1])=="string" then
+    return dt[1] 
+  else
+    return xmlserialize(root,xmltexthandler) or ""
+  end
+end
+local function text(collected) 
+  if collected then 
+    local e=collected[1] or collected 
+    return e and xmltotext(e) or ""
+  else
+    return ""
+  end
+end
+local function texts(collected)
+  if not collected then
+    return {} 
+  end
+  local nc=#collected
+  if nc==0 then
+    return {} 
+  end
+  local t,n={},0
+  for c=1,nc do
+    local e=collected[c]
+    if e and e.dt then
+      n=n+1
+      t[n]=e.dt
+    end
+  end
+  return t
+end
+local function tag(collected,n)
+  if not collected then
+    return
+  end
+  local nc=#collected
+  if nc==0 then
+    return
+  end
+  local c
+  if n==0 or not n then
+    c=collected[1]
+  elseif n>1 then
+    c=collected[n]
+  else
+    c=collected[nc-n+1]
+  end
+  return c and c.tg
+end
+local function name(collected,n)
+  if not collected then
+    return
+  end
+  local nc=#collected
+  if nc==0 then
+    return
+  end
+  local c
+  if n==0 or not n then
+    c=collected[1]
+  elseif n>1 then
+    c=collected[n]
+  else
+    c=collected[nc-n+1]
+  end
+  if not c then
+  elseif c.ns=="" then
+    return c.tg
+  else
+    return c.ns..":"..c.tg
+  end
+end
+local function tags(collected,nonamespace)
+  if not collected then
+    return
+  end
+  local nc=#collected
+  if nc==0 then
+    return
+  end
+  local t,n={},0
+  for c=1,nc do
+    local e=collected[c]
+    local ns,tg=e.ns,e.tg
+    n=n+1
+    if nonamespace or ns=="" then
+      t[n]=tg
+    else
+      t[n]=ns..":"..tg
+    end
+  end
+  return t
+end
+local function empty(collected,spacesonly)
+  if not collected then
+    return true
+  end
+  local nc=#collected
+  if nc==0 then
+    return true
+  end
+  for c=1,nc do
+    local e=collected[c]
+    if e then
+      local edt=e.dt
+      if edt then
+        local n=#edt
+        if n==1 then
+          local edk=edt[1]
+          local typ=type(edk)
+          if typ=="table" then
+            return false
+          elseif edk~="" then
+            return false
+          elseif spacesonly and not find(edk,"%S") then
+            return false
+          end
+        elseif n>1 then
+          return false
+        end
+      end
+    end
+  end
+  return true
+end
+finalizers.first=first
+finalizers.last=last
+finalizers.all=all
+finalizers.reverse=reverse
+finalizers.elements=all
+finalizers.default=all
+finalizers.attribute=attribute
+finalizers.att=att
+finalizers.count=count
+finalizers.position=position
+finalizers.match=match
+finalizers.index=index
+finalizers.attributes=attributes
+finalizers.chainattribute=chainattribute
+finalizers.text=text
+finalizers.texts=texts
+finalizers.tag=tag
+finalizers.name=name
+finalizers.tags=tags
+finalizers.empty=empty
+function xml.first(id,pattern)
+  return first(xmlfilter(id,pattern))
+end
+function xml.last(id,pattern)
+  return last(xmlfilter(id,pattern))
+end
+function xml.count(id,pattern)
+  return count(xmlfilter(id,pattern))
+end
+function xml.attribute(id,pattern,a,default)
+  return attribute(xmlfilter(id,pattern),a,default)
+end
+function xml.raw(id,pattern)
+  if pattern then
+    return raw(xmlfilter(id,pattern))
+  else
+    return raw(id)
+  end
+end
+function xml.text(id,pattern) 
+  if pattern then
+    local collected=xmlfilter(id,pattern)
+    return collected and #collected>0 and xmltotext(collected[1]) or ""
+  elseif id then
+    return xmltotext(id) or ""
+  else
+    return ""
+  end
+end
+xml.content=text
+function xml.position(id,pattern,n) 
+  return position(xmlfilter(id,pattern),n)
+end
+function xml.match(id,pattern) 
+  return match(xmlfilter(id,pattern))
+end
+function xml.empty(id,pattern,spacesonly)
+  return empty(xmlfilter(id,pattern),spacesonly)
+end
+xml.all=xml.filter
+xml.index=xml.position
+xml.found=xml.filter
+local function totable(x)
+  local t={}
+  for e in xmlcollected(x[1] or x,"/*") do
+    t[e.tg]=xmltostring(e.dt) or ""
+  end
+  return next(t) and t or nil
+end
+xml.table=totable
+finalizers.table=totable
+local function textonly(e,t)
+  if e then
+    local edt=e.dt
+    if edt then
+      for i=1,#edt do
+        local e=edt[i]
+        if type(e)=="table" then
+          textonly(e,t)
+        else
+          t[#t+1]=e
+        end
+      end
+    end
+  end
+  return t
+end
+function xml.textonly(e) 
+  return concat(textonly(e,{}))
+end
+function finalizers.lowerall(collected)
+  for c=1,#collected do
+    local e=collected[c]
+    if not e.special then
+      e.tg=lower(e.tg)
+      local eat=e.at
+      if eat then
+        local t={}
+        for k,v in next,eat do
+          t[lower(k)]=v
+        end
+        e.at=t
+      end
+    end
+  end
+end
+function finalizers.upperall(collected)
+  for c=1,#collected do
+    local e=collected[c]
+    if not e.special then
+      e.tg=upper(e.tg)
+      local eat=e.at
+      if eat then
+        local t={}
+        for k,v in next,eat do
+          t[upper(k)]=v
+        end
+        e.at=t
+      end
+    end
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["trac-xml"] = package.loaded["trac-xml"] or true
+
+-- original size: 6351, stripped down to: 4919
+
+if not modules then modules={} end modules ['trac-xml']={
+  version=1.001,
+  comment="companion to trac-log.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local formatters=string.formatters
+local reporters=logs.reporters
+local xmlserialize=xml.serialize
+local xmlcollected=xml.collected
+local xmltext=xml.text
+local xmlfirst=xml.first
+local function showhelp(specification,...)
+  local root=xml.convert(specification.helpinfo or "")
+  if not root then
+    return
+  end
+  local xs=xml.gethandlers("string")
+  xml.sethandlersfunction(xs,"short",function(e,handler) xmlserialize(e.dt,handler) end)
+  xml.sethandlersfunction(xs,"ref",function(e,handler) handler.handle("--"..e.at.name) end)
+  local wantedcategories=select("#",...)==0 and true or table.tohash {... }
+  local nofcategories=xml.count(root,"/application/flags/category")
+  local report=specification.report
+  for category in xmlcollected(root,"/application/flags/category") do
+    local categoryname=category.at.name or ""
+    if wantedcategories==true or wantedcategories[categoryname] then
+      if nofcategories>1 then
+        report("%s options:",categoryname)
+        report()
+      end
+      for subcategory in xmlcollected(category,"/subcategory") do
+        for flag in xmlcollected(subcategory,"/flag") do
+          local name=flag.at.name
+          local value=flag.at.value
+          local short=xmltext(xmlfirst(flag,"/short"))
+          if value then
+            report("--%-20s %s",formatters["%s=%s"](name,value),short)
+          else
+            report("--%-20s %s",name,short)
+          end
+        end
+        report()
+      end
+    end
+  end
+  for category in xmlcollected(root,"/application/examples/category") do
+    local title=xmltext(xmlfirst(category,"/title"))
+    if title and title~="" then
+      report()
+      report(title)
+      report()
+    end
+    for subcategory in xmlcollected(category,"/subcategory") do
+      for example in xmlcollected(subcategory,"/example") do
+        local command=xmltext(xmlfirst(example,"/command"))
+        local comment=xmltext(xmlfirst(example,"/comment"))
+        report(command)
+      end
+      report()
+    end
+  end
+  for comment in xmlcollected(root,"/application/comments/comment") do
+    local comment=xmltext(comment)
+    report()
+    report(comment)
+    report()
+  end
+end
+local reporthelp=reporters.help
+local exporthelp=reporters.export
+local function xmlfound(t)
+  local helpinfo=t.helpinfo
+  if type(helpinfo)=="table" then
+    return false
+  end
+  if type(helpinfo)~="string" then
+    helpinfo="Warning: no helpinfo found."
+    t.helpinfo=helpinfo
+    return false
+  end
+  if string.find(helpinfo,".xml$") then
+    local ownscript=environment.ownscript
+    local helpdata=false
+    if ownscript then
+      local helpfile=file.join(file.pathpart(ownscript),helpinfo)
+      helpdata=io.loaddata(helpfile)
+      if helpdata=="" then
+        helpdata=false
+      end
+    end
+    if not helpdata then
+      local helpfile=resolvers.findfile(helpinfo,"tex")
+      helpdata=helpfile and io.loaddata(helpfile)
+    end
+    if helpdata and helpdata~="" then
+      helpinfo=helpdata
+    else
+      helpinfo=formatters["Warning: help file %a is not found."](helpinfo)
+    end
+  end
+  t.helpinfo=helpinfo
+  return string.find(t.helpinfo,"^<%?xml") and true or false
+end
+function reporters.help(t,...)
+  if xmlfound(t) then
+    showhelp(t,...)
+  else
+    reporthelp(t,...)
+  end
+end
+function reporters.export(t,methods,filename)
+  if not xmlfound(t) then
+    return exporthelp(t)
+  end
+  if not methods or methods=="" then
+    methods=environment.arguments["exporthelp"]
+  end
+  if not filename or filename=="" then
+    filename=environment.files[1]
+  end
+  dofile(resolvers.findfile("trac-exp.lua","tex"))
+  local exporters=logs.exporters
+  if not exporters or not methods then
+    return exporthelp(t)
+  end
+  if methods=="all" then
+    methods=table.keys(exporters)
+  elseif type(methods)=="string" then
+    methods=utilities.parsers.settings_to_array(methods)
+  else
+    return exporthelp(t)
+  end
+  if type(filename)~="string" or filename=="" then
+    filename=false
+  elseif file.pathpart(filename)=="" then
+    t.report("export file %a will not be saved on the current path (safeguard)",filename)
+    return
+  end
+  for i=1,#methods do
+    local method=methods[i]
+    local exporter=exporters[method]
+    if exporter then
+      local result=exporter(t,method)
+      if result and result~="" then
+        if filename then
+          local fullname=file.replacesuffix(filename,method)
+          t.report("saving export in %a",fullname)
+          io.savedata(fullname,result)
+        else
+          reporters.lines(t,result)
+        end
+      else
+        t.report("no output from exporter %a",method)
+      end
+    else
+      t.report("unknown exporter %a",method)
+    end
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-ini"] = package.loaded["data-ini"] or true
+
+-- original size: 7898, stripped down to: 5501
+
+if not modules then modules={} end modules ['data-ini']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files",
+}
+local gsub,find,gmatch,char=string.gsub,string.find,string.gmatch,string.char
+local next,type=next,type
+local filedirname,filebasename,filejoin=file.dirname,file.basename,file.join
+local trace_locating=false trackers.register("resolvers.locating",function(v) trace_locating=v end)
+local trace_detail=false trackers.register("resolvers.details",function(v) trace_detail=v end)
+local trace_expansions=false trackers.register("resolvers.expansions",function(v) trace_expansions=v end)
+local report_initialization=logs.reporter("resolvers","initialization")
+local ostype,osname,ossetenv,osgetenv=os.type,os.name,os.setenv,os.getenv
+resolvers=resolvers or {}
+local resolvers=resolvers
+texconfig.kpse_init=false
+texconfig.shell_escape='t'
+if not (environment and environment.default_texmfcnf) and kpse and kpse.default_texmfcnf then
+  local default_texmfcnf=kpse.default_texmfcnf()
+  default_texmfcnf=gsub(default_texmfcnf,"$SELFAUTOLOC","selfautoloc:")
+  default_texmfcnf=gsub(default_texmfcnf,"$SELFAUTODIR","selfautodir:")
+  default_texmfcnf=gsub(default_texmfcnf,"$SELFAUTOPARENT","selfautoparent:")
+  default_texmfcnf=gsub(default_texmfcnf,"$HOME","home:")
+  environment.default_texmfcnf=default_texmfcnf
+end
+kpse={ original=kpse }
+setmetatable(kpse,{
+  __index=function(kp,name)
+    report_initialization("fatal error: kpse library is accessed (key: %s)",name)
+    os.exit()
+  end
+} )
+do
+  local osfontdir=osgetenv("OSFONTDIR")
+  if osfontdir and osfontdir~="" then
+  elseif osname=="windows" then
+    ossetenv("OSFONTDIR","c:/windows/fonts//")
+  elseif osname=="macosx" then
+    ossetenv("OSFONTDIR","$HOME/Library/Fonts//;/Library/Fonts//;/System/Library/Fonts//")
+  end
+end
+do
+  local homedir=osgetenv(ostype=="windows" and 'USERPROFILE' or 'HOME') or ''
+  if not homedir or homedir=="" then
+    homedir=char(127) 
+  end
+  homedir=file.collapsepath(homedir)
+  ossetenv("HOME",homedir) 
+  ossetenv("USERPROFILE",homedir) 
+  environment.homedir=homedir
+end
+do
+  local args=environment.originalarguments or arg 
+  if not environment.ownmain then
+    environment.ownmain=status and string.match(string.lower(status.banner),"this is ([%a]+)") or "luatex"
+  end
+  local ownbin=environment.ownbin or args[-2] or arg[-2] or args[-1] or arg[-1] or arg[0] or "luatex"
+  local ownpath=environment.ownpath or os.selfdir
+  ownbin=file.collapsepath(ownbin)
+  ownpath=file.collapsepath(ownpath)
+  if not ownpath or ownpath=="" or ownpath=="unset" then
+    ownpath=args[-1] or arg[-1]
+    ownpath=ownpath and filedirname(gsub(ownpath,"\\","/"))
+    if not ownpath or ownpath=="" then
+      ownpath=args[-0] or arg[-0]
+      ownpath=ownpath and filedirname(gsub(ownpath,"\\","/"))
+    end
+    local binary=ownbin
+    if not ownpath or ownpath=="" then
+      ownpath=ownpath and filedirname(binary)
+    end
+    if not ownpath or ownpath=="" then
+      if os.binsuffix~="" then
+        binary=file.replacesuffix(binary,os.binsuffix)
+      end
+      local path=osgetenv("PATH")
+      if path then
+        for p in gmatch(path,"[^"..io.pathseparator.."]+") do
+          local b=filejoin(p,binary)
+          if lfs.isfile(b) then
+            local olddir=lfs.currentdir()
+            if lfs.chdir(p) then
+              local pp=lfs.currentdir()
+              if trace_locating and p~=pp then
+                report_initialization("following symlink %a to %a",p,pp)
+              end
+              ownpath=pp
+              lfs.chdir(olddir)
+            else
+              if trace_locating then
+                report_initialization("unable to check path %a",p)
+              end
+              ownpath=p
+            end
+            break
+          end
+        end
+      end
+    end
+    if not ownpath or ownpath=="" then
+      ownpath="."
+      report_initialization("forcing fallback to ownpath %a",ownpath)
+    elseif trace_locating then
+      report_initialization("using ownpath %a",ownpath)
+    end
+  end
+  environment.ownbin=ownbin
+  environment.ownpath=ownpath
+end
+resolvers.ownpath=environment.ownpath
+function resolvers.getownpath()
+  return environment.ownpath
+end
+do
+  local ownpath=environment.ownpath or dir.current()
+  if ownpath then
+    ossetenv('SELFAUTOLOC',file.collapsepath(ownpath))
+    ossetenv('SELFAUTODIR',file.collapsepath(ownpath.."/.."))
+    ossetenv('SELFAUTOPARENT',file.collapsepath(ownpath.."/../.."))
+  else
+    report_initialization("error: unable to locate ownpath")
+    os.exit()
+  end
+end
+local texos=environment.texos  or osgetenv("TEXOS")
+local texmfos=environment.texmfos or osgetenv('SELFAUTODIR')
+if not texos or texos=="" then
+  texos=file.basename(texmfos)
+end
+ossetenv('TEXMFOS',texmfos)   
+ossetenv('TEXOS',texos)    
+ossetenv('SELFAUTOSYSTEM',os.platform) 
+environment.texos=texos
+environment.texmfos=texmfos
+local texroot=environment.texroot or osgetenv("TEXROOT")
+if not texroot or texroot=="" then
+  texroot=osgetenv('SELFAUTOPARENT')
+  ossetenv('TEXROOT',texroot)
+end
+environment.texroot=file.collapsepath(texroot)
+if profiler then
+  directives.register("system.profile",function()
+    profiler.start("luatex-profile.log")
+  end)
+end
+if not resolvers.resolve then
+  function resolvers.resolve (s) return s end
+  function resolvers.unresolve(s) return s end
+  function resolvers.repath  (s) return s end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-exp"] = package.loaded["data-exp"] or true
+
+-- original size: 15303, stripped down to: 9716
+
+if not modules then modules={} end modules ['data-exp']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files",
+}
+local format,find,gmatch,lower,char,sub=string.format,string.find,string.gmatch,string.lower,string.char,string.sub
+local concat,sort=table.concat,table.sort
+local lpegmatch,lpegpatterns=lpeg.match,lpeg.patterns
+local Ct,Cs,Cc,Carg,P,C,S=lpeg.Ct,lpeg.Cs,lpeg.Cc,lpeg.Carg,lpeg.P,lpeg.C,lpeg.S
+local type,next=type,next
+local ostype=os.type
+local collapsepath=file.collapsepath
+local trace_locating=false trackers.register("resolvers.locating",function(v) trace_locating=v end)
+local trace_expansions=false trackers.register("resolvers.expansions",function(v) trace_expansions=v end)
+local report_expansions=logs.reporter("resolvers","expansions")
+local resolvers=resolvers
+local function f_both(a,b)
+  local t,n={},0
+  for sb in gmatch(b,"[^,]+") do       
+    for sa in gmatch(a,"[^,]+") do     
+      n=n+1;t[n]=sa..sb
+    end
+  end
+  return concat(t,",")
+end
+local comma=P(",")
+local nocomma=(1-comma)^1
+local docomma=comma^1/","
+local before=Cs((nocomma*Carg(1)+docomma)^0)
+local after=Cs((Carg(1)*nocomma+docomma)^0)
+local both=Cs(((C(nocomma)*Carg(1))/function(a,b) return lpegmatch(before,b,1,a) end+docomma)^0)
+local function f_first (a,b) return lpegmatch(after,b,1,a) end
+local function f_second(a,b) return lpegmatch(before,a,1,b) end
+local function f_both (a,b) return lpegmatch(both,b,1,a) end
+local left=P("{")
+local right=P("}")
+local var=P((1-S("{}" ))^0)
+local set=P((1-S("{},"))^0)
+local other=P(1)
+local l_first=Cs((Cc("{")*(C(set)*left*C(var)*right/f_first)*Cc("}")+other )^0 )
+local l_second=Cs((Cc("{")*(left*C(var)*right*C(set)/f_second)*Cc("}")+other )^0 )
+local l_both=Cs((Cc("{")*(left*C(var)*right*left*C(var)*right/f_both)*Cc("}")+other )^0 )
+local l_rest=Cs((left*var*(left/"")*var*(right/"")*var*right+other )^0 )
+local stripper_1=lpeg.stripper ("{}@")
+local replacer_1=lpeg.replacer { { ",}",",@}" },{ "{,","{@," },}
+local function splitpathexpr(str,newlist,validate) 
+  if trace_expansions then
+    report_expansions("expanding variable %a",str)
+  end
+  local t,ok,done=newlist or {},false,false
+  local n=#t
+  str=lpegmatch(replacer_1,str)
+  repeat
+    local old=str
+    repeat
+      local old=str
+      str=lpegmatch(l_first,str)
+    until old==str
+    repeat
+      local old=str
+      str=lpegmatch(l_second,str)
+    until old==str
+    repeat
+      local old=str
+      str=lpegmatch(l_both,str)
+    until old==str
+    repeat
+      local old=str
+      str=lpegmatch(l_rest,str)
+    until old==str
+  until old==str 
+  str=lpegmatch(stripper_1,str)
+  if validate then
+    for s in gmatch(str,"[^,]+") do
+      s=validate(s)
+      if s then
+        n=n+1
+        t[n]=s
+      end
+    end
+  else
+    for s in gmatch(str,"[^,]+") do
+      n=n+1
+      t[n]=s
+    end
+  end
+  if trace_expansions then
+    for k=1,#t do
+      report_expansions("% 4i: %s",k,t[k])
+    end
+  end
+  return t
+end
+local function validate(s)
+  s=collapsepath(s) 
+  return s~="" and not find(s,"^!*unset/*$") and s
+end
+resolvers.validatedpath=validate 
+function resolvers.expandedpathfromlist(pathlist)
+  local newlist={}
+  for k=1,#pathlist do
+    splitpathexpr(pathlist[k],newlist,validate)
+  end
+  return newlist
+end
+local cleanup=lpeg.replacer {
+  { "!","" },
+  { "\\","/" },
+}
+function resolvers.cleanpath(str) 
+  local doslashes=(P("\\")/"/"+1)^0
+  local donegation=(P("!")/""   )^0
+  local homedir=lpegmatch(Cs(donegation*doslashes),environment.homedir or "")
+  if homedir=="~" or homedir=="" or not lfs.isdir(homedir) then
+    if trace_expansions then
+      report_expansions("no home dir set, ignoring dependent paths")
+    end
+    function resolvers.cleanpath(str)
+      if not str or find(str,"~") then
+        return "" 
+      else
+        return lpegmatch(cleanup,str)
+      end
+    end
+  else
+    local dohome=((P("~")+P("$HOME"))/homedir)^0
+    local cleanup=Cs(donegation*dohome*doslashes)
+    function resolvers.cleanpath(str)
+      return str and lpegmatch(cleanup,str) or ""
+    end
+  end
+  return resolvers.cleanpath(str)
+end
+local expandhome=P("~")/"$HOME" 
+local dodouble=P('"')/""*(expandhome+(1-P('"')))^0*P('"')/""
+local dosingle=P("'")/""*(expandhome+(1-P("'")))^0*P("'")/""
+local dostring=(expandhome+1       )^0
+local stripper=Cs(
+  lpegpatterns.unspacer*(dosingle+dodouble+dostring)*lpegpatterns.unspacer
+)
+function resolvers.checkedvariable(str) 
+  return type(str)=="string" and lpegmatch(stripper,str) or str
+end
+local cache={}
+local splitter=lpeg.tsplitat(";") 
+local backslashswapper=lpeg.replacer("\\","/")
+local function splitconfigurationpath(str) 
+  if str then
+    local found=cache[str]
+    if not found then
+      if str=="" then
+        found={}
+      else
+        local split=lpegmatch(splitter,lpegmatch(backslashswapper,str)) 
+        found={}
+        local noffound=0
+        for i=1,#split do
+          local s=split[i]
+          if not find(s,"^{*unset}*") then
+            noffound=noffound+1
+            found[noffound]=s
+          end
+        end
+        if trace_expansions then
+          report_expansions("splitting path specification %a",str)
+          for k=1,noffound do
+            report_expansions("% 4i: %s",k,found[k])
+          end
+        end
+        cache[str]=found
+      end
+    end
+    return found
+  end
+end
+resolvers.splitconfigurationpath=splitconfigurationpath
+function resolvers.splitpath(str)
+  if type(str)=='table' then
+    return str
+  else
+    return splitconfigurationpath(str)
+  end
+end
+function resolvers.joinpath(str)
+  if type(str)=='table' then
+    return file.joinpath(str)
+  else
+    return str
+  end
+end
+local attributes,directory=lfs.attributes,lfs.dir
+local weird=P(".")^1+lpeg.anywhere(S("~`!#$%^&*()={}[]:;\"\'||<>,?\n\r\t"))
+local timer={}
+local scanned={}
+local nofscans=0
+local scancache={}
+local function scan(files,spec,path,n,m,r)
+  local full=(path=="" and spec) or (spec..path..'/')
+  local dirs={}
+  local nofdirs=0
+  for name in directory(full) do
+    if not lpegmatch(weird,name) then
+      local mode=attributes(full..name,'mode')
+      if mode=='file' then
+        n=n+1
+        local f=files[name]
+        if f then
+          if type(f)=='string' then
+            files[name]={ f,path }
+          else
+            f[#f+1]=path
+          end
+        else 
+          files[name]=path
+          local lower=lower(name)
+          if name~=lower then
+            files["remap:"..lower]=name
+            r=r+1
+          end
+        end
+      elseif mode=='directory' then
+        m=m+1
+        nofdirs=nofdirs+1
+        if path~="" then
+          dirs[nofdirs]=path..'/'..name
+        else
+          dirs[nofdirs]=name
+        end
+      end
+    end
+  end
+  if nofdirs>0 then
+    sort(dirs)
+    for i=1,nofdirs do
+      files,n,m,r=scan(files,spec,dirs[i],n,m,r)
+    end
+  end
+  scancache[sub(full,1,-2)]=files
+  return files,n,m,r
+end
+local fullcache={}
+function resolvers.scanfiles(path,branch,usecache)
+  statistics.starttiming(timer)
+  local realpath=resolvers.resolve(path) 
+  if usecache then
+    local files=fullcache[realpath]
+    if files then
+      if trace_locating then
+        report_expansions("using caches scan of path %a, branch %a",path,branch or path)
+      end
+      return files
+    end
+  end
+  if trace_locating then
+    report_expansions("scanning path %a, branch %a",path,branch or path)
+  end
+  local files,n,m,r=scan({},realpath..'/',"",0,0,0)
+  files.__path__=path 
+  files.__files__=n
+  files.__directories__=m
+  files.__remappings__=r
+  if trace_locating then
+    report_expansions("%s files found on %s directories with %s uppercase remappings",n,m,r)
+  end
+  if usecache then
+    scanned[#scanned+1]=realpath
+    fullcache[realpath]=files
+  end
+  nofscans=nofscans+1
+  statistics.stoptiming(timer)
+  return files
+end
+local function simplescan(files,spec,path) 
+  local full=(path=="" and spec) or (spec..path..'/')
+  local dirs={}
+  local nofdirs=0
+  for name in directory(full) do
+    if not lpegmatch(weird,name) then
+      local mode=attributes(full..name,'mode')
+      if mode=='file' then
+        if not files[name] then
+          files[name]=path
+        end
+      elseif mode=='directory' then
+        nofdirs=nofdirs+1
+        if path~="" then
+          dirs[nofdirs]=path..'/'..name
+        else
+          dirs[nofdirs]=name
+        end
+      end
+    end
+  end
+  if nofdirs>0 then
+    sort(dirs)
+    for i=1,nofdirs do
+      files=simplescan(files,spec,dirs[i])
+    end
+  end
+  return files
+end
+local simplecache={}
+local nofsharedscans=0
+function resolvers.simplescanfiles(path,branch,usecache)
+  statistics.starttiming(timer)
+  local realpath=resolvers.resolve(path) 
+  if usecache then
+    local files=simplecache[realpath]
+    if not files then
+      files=scancache[realpath]
+      if files then
+        nofsharedscans=nofsharedscans+1
+      end
+    end
+    if files then
+      if trace_locating then
+        report_expansions("using caches scan of path %a, branch %a",path,branch or path)
+      end
+      return files
+    end
+  end
+  if trace_locating then
+    report_expansions("scanning path %a, branch %a",path,branch or path)
+  end
+  local files=simplescan({},realpath..'/',"")
+  if trace_locating then
+    report_expansions("%s files found",table.count(files))
+  end
+  if usecache then
+    scanned[#scanned+1]=realpath
+    simplecache[realpath]=files
+  end
+  nofscans=nofscans+1
+  statistics.stoptiming(timer)
+  return files
+end
+function resolvers.scandata()
+  table.sort(scanned)
+  return {
+    n=nofscans,
+    shared=nofsharedscans,
+    time=statistics.elapsedtime(timer),
+    paths=scanned,
+  }
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-env"] = package.loaded["data-env"] or true
+
+-- original size: 8769, stripped down to: 6490
+
+if not modules then modules={} end modules ['data-env']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files",
+}
+local lower,gsub=string.lower,string.gsub
+local resolvers=resolvers
+local allocate=utilities.storage.allocate
+local setmetatableindex=table.setmetatableindex
+local suffixonly=file.suffixonly
+local formats=allocate()
+local suffixes=allocate()
+local dangerous=allocate()
+local suffixmap=allocate()
+resolvers.formats=formats
+resolvers.suffixes=suffixes
+resolvers.dangerous=dangerous
+resolvers.suffixmap=suffixmap
+local luasuffixes=utilities.lua.suffixes
+local relations=allocate { 
+  core={
+    ofm={ 
+      names={ "ofm","omega font metric","omega font metrics" },
+      variable='OFMFONTS',
+      suffixes={ 'ofm','tfm' },
+    },
+    ovf={ 
+      names={ "ovf","omega virtual font","omega virtual fonts" },
+      variable='OVFFONTS',
+      suffixes={ 'ovf','vf' },
+    },
+    tfm={
+      names={ "tfm","tex font metric","tex font metrics" },
+      variable='TFMFONTS',
+      suffixes={ 'tfm' },
+    },
+    vf={
+      names={ "vf","virtual font","virtual fonts" },
+      variable='VFFONTS',
+      suffixes={ 'vf' },
+    },
+    otf={
+      names={ "otf","opentype","opentype font","opentype fonts"},
+      variable='OPENTYPEFONTS',
+      suffixes={ 'otf' },
+    },
+    ttf={
+      names={ "ttf","truetype","truetype font","truetype fonts","truetype collection","truetype collections","truetype dictionary","truetype dictionaries" },
+      variable='TTFONTS',
+      suffixes={ 'ttf','ttc','dfont' },
+    },
+    afm={
+      names={ "afm","adobe font metric","adobe font metrics" },
+      variable="AFMFONTS",
+      suffixes={ "afm" },
+    },
+    pfb={
+      names={ "pfb","type1","type 1","type1 font","type 1 font","type1 fonts","type 1 fonts" },
+      variable='T1FONTS',
+      suffixes={ 'pfb','pfa' },
+    },
+    fea={
+      names={ "fea","font feature","font features","font feature file","font feature files" },
+      variable='FONTFEATURES',
+      suffixes={ 'fea' },
+    },
+    cid={
+      names={ "cid","cid map","cid maps","cid file","cid files" },
+      variable='FONTCIDMAPS',
+      suffixes={ 'cid','cidmap' },
+    },
+    fmt={
+      names={ "fmt","format","tex format" },
+      variable='TEXFORMATS',
+      suffixes={ 'fmt' },
+    },
+    mem={ 
+      names={ 'mem',"metapost format" },
+      variable='MPMEMS',
+      suffixes={ 'mem' },
+    },
+    mp={
+      names={ "mp" },
+      variable='MPINPUTS',
+      suffixes={ 'mp','mpvi','mpiv','mpii' },
+    },
+    tex={
+      names={ "tex" },
+      variable='TEXINPUTS',
+      suffixes={ 'tex',"mkvi","mkiv","mkii" },
+    },
+    icc={
+      names={ "icc","icc profile","icc profiles" },
+      variable='ICCPROFILES',
+      suffixes={ 'icc' },
+    },
+    texmfscripts={
+      names={ "texmfscript","texmfscripts","script","scripts" },
+      variable='TEXMFSCRIPTS',
+      suffixes={ 'lua','rb','pl','py' },
+    },
+    lua={
+      names={ "lua" },
+      variable='LUAINPUTS',
+      suffixes={ luasuffixes.lua,luasuffixes.luc,luasuffixes.tma,luasuffixes.tmc },
+    },
+    lib={
+      names={ "lib" },
+      variable='CLUAINPUTS',
+      suffixes=os.libsuffix and { os.libsuffix } or { 'dll','so' },
+    },
+    bib={
+      names={ 'bib' },
+      suffixes={ 'bib' },
+    },
+    bst={
+      names={ 'bst' },
+      suffixes={ 'bst' },
+    },
+    fontconfig={
+      names={ 'fontconfig','fontconfig file','fontconfig files' },
+      variable='FONTCONFIG_PATH',
+    },
+  },
+  obsolete={
+    enc={
+      names={ "enc","enc files","enc file","encoding files","encoding file" },
+      variable='ENCFONTS',
+      suffixes={ 'enc' },
+    },
+    map={
+      names={ "map","map files","map file" },
+      variable='TEXFONTMAPS',
+      suffixes={ 'map' },
+    },
+    lig={
+      names={ "lig files","lig file","ligature file","ligature files" },
+      variable='LIGFONTS',
+      suffixes={ 'lig' },
+    },
+    opl={
+      names={ "opl" },
+      variable='OPLFONTS',
+      suffixes={ 'opl' },
+    },
+    ovp={
+      names={ "ovp" },
+      variable='OVPFONTS',
+      suffixes={ 'ovp' },
+    },
+  },
+  kpse={ 
+    base={
+      names={ 'base',"metafont format" },
+      variable='MFBASES',
+      suffixes={ 'base','bas' },
+    },
+    cmap={
+      names={ 'cmap','cmap files','cmap file' },
+      variable='CMAPFONTS',
+      suffixes={ 'cmap' },
+    },
+    cnf={
+      names={ 'cnf' },
+      suffixes={ 'cnf' },
+    },
+    web={
+      names={ 'web' },
+      suffixes={ 'web','ch' }
+    },
+    cweb={
+      names={ 'cweb' },
+      suffixes={ 'w','web','ch' },
+    },
+    gf={
+      names={ 'gf' },
+      suffixes={ '<resolution>gf' },
+    },
+    mf={
+      names={ 'mf' },
+      variable='MFINPUTS',
+      suffixes={ 'mf' },
+    },
+    mft={
+      names={ 'mft' },
+      suffixes={ 'mft' },
+    },
+    pk={
+      names={ 'pk' },
+      suffixes={ '<resolution>pk' },
+    },
+  },
+}
+resolvers.relations=relations
+function resolvers.updaterelations()
+  for category,categories in next,relations do
+    for name,relation in next,categories do
+      local rn=relation.names
+      local rv=relation.variable
+      local rs=relation.suffixes
+      if rn and rv then
+        for i=1,#rn do
+          local rni=lower(gsub(rn[i]," ",""))
+          formats[rni]=rv
+          if rs then
+            suffixes[rni]=rs
+            for i=1,#rs do
+              local rsi=rs[i]
+              suffixmap[rsi]=rni
+            end
+          end
+        end
+      end
+      if rs then
+      end
+    end
+  end
+end
+resolvers.updaterelations() 
+local function simplified(t,k)
+  return k and rawget(t,lower(gsub(k," ",""))) or nil
+end
+setmetatableindex(formats,simplified)
+setmetatableindex(suffixes,simplified)
+setmetatableindex(suffixmap,simplified)
+function resolvers.suffixofformat(str)
+  local s=suffixes[str]
+  return s and s[1] or ""
+end
+function resolvers.suffixofformat(str)
+  return suffixes[str] or {}
+end
+for name,format in next,formats do
+  dangerous[name]=true 
+end
+dangerous.tex=nil
+function resolvers.formatofvariable(str)
+  return formats[str] or ''
+end
+function resolvers.formatofsuffix(str) 
+  return suffixmap[suffixonly(str)] or 'tex' 
+end
+function resolvers.variableofformat(str)
+  return formats[str] or ''
+end
+function resolvers.variableofformatorsuffix(str)
+  local v=formats[str]
+  if v then
+    return v
+  end
+  v=suffixmap[suffixonly(str)]
+  if v then
+    return formats[v]
+  end
+  return ''
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-tmp"] = package.loaded["data-tmp"] or true
+
+-- original size: 15532, stripped down to: 11648
+
+if not modules then modules={} end modules ['data-tmp']={
+  version=1.100,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local format,lower,gsub,concat=string.format,string.lower,string.gsub,table.concat
+local concat,serialize,serializetofile=table.concat,table.serialize,table.tofile
+local mkdirs,isdir,isfile=dir.mkdirs,lfs.isdir,lfs.isfile
+local addsuffix,is_writable,is_readable=file.addsuffix,file.is_writable,file.is_readable
+local formatters=string.formatters
+local trace_locating=false trackers.register("resolvers.locating",function(v) trace_locating=v end)
+local trace_cache=false trackers.register("resolvers.cache",function(v) trace_cache=v end)
+local report_caches=logs.reporter("resolvers","caches")
+local report_resolvers=logs.reporter("resolvers","caching")
+local resolvers=resolvers
+local directive_cleanup=false directives.register("system.compile.cleanup",function(v) directive_cleanup=v end)
+local directive_strip=false directives.register("system.compile.strip",function(v) directive_strip=v end)
+local compile=utilities.lua.compile
+function utilities.lua.compile(luafile,lucfile,cleanup,strip)
+  if cleanup==nil then cleanup=directive_cleanup end
+  if strip==nil then strip=directive_strip  end
+  return compile(luafile,lucfile,cleanup,strip)
+end
+caches=caches or {}
+local caches=caches
+local luasuffixes=utilities.lua.suffixes
+caches.base=caches.base or "luatex-cache"
+caches.more=caches.more or "context"
+caches.direct=false 
+caches.tree=false
+caches.force=true
+caches.ask=false
+caches.relocate=false
+caches.defaults={ "TMPDIR","TEMPDIR","TMP","TEMP","HOME","HOMEPATH" }
+local writable,readables,usedreadables=nil,{},{}
+local function identify()
+  local texmfcaches=resolvers.cleanpathlist("TEXMFCACHE")
+  if texmfcaches then
+    for k=1,#texmfcaches do
+      local cachepath=texmfcaches[k]
+      if cachepath~="" then
+        cachepath=resolvers.resolve(cachepath)
+        cachepath=resolvers.cleanpath(cachepath)
+        cachepath=file.collapsepath(cachepath)
+        local valid=isdir(cachepath)
+        if valid then
+          if is_readable(cachepath) then
+            readables[#readables+1]=cachepath
+            if not writable and is_writable(cachepath) then
+              writable=cachepath
+            end
+          end
+        elseif not writable and caches.force then
+          local cacheparent=file.dirname(cachepath)
+          if is_writable(cacheparent) and true then 
+            if not caches.ask or io.ask(format("\nShould I create the cache path %s?",cachepath),"no",{ "yes","no" })=="yes" then
+              mkdirs(cachepath)
+              if isdir(cachepath) and is_writable(cachepath) then
+                report_caches("path %a created",cachepath)
+                writable=cachepath
+                readables[#readables+1]=cachepath
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+  local texmfcaches=caches.defaults
+  if texmfcaches then
+    for k=1,#texmfcaches do
+      local cachepath=texmfcaches[k]
+      cachepath=resolvers.expansion(cachepath) 
+      if cachepath~="" then
+        cachepath=resolvers.resolve(cachepath)
+        cachepath=resolvers.cleanpath(cachepath)
+        local valid=isdir(cachepath)
+        if valid and is_readable(cachepath) then
+          if not writable and is_writable(cachepath) then
+            readables[#readables+1]=cachepath
+            writable=cachepath
+            break
+          end
+        end
+      end
+    end
+  end
+  if not writable then
+    report_caches("fatal error: there is no valid writable cache path defined")
+    os.exit()
+  elseif #readables==0 then
+    report_caches("fatal error: there is no valid readable cache path defined")
+    os.exit()
+  end
+  writable=dir.expandname(resolvers.cleanpath(writable))
+  local base,more,tree=caches.base,caches.more,caches.tree or caches.treehash() 
+  if tree then
+    caches.tree=tree
+    writable=mkdirs(writable,base,more,tree)
+    for i=1,#readables do
+      readables[i]=file.join(readables[i],base,more,tree)
+    end
+  else
+    writable=mkdirs(writable,base,more)
+    for i=1,#readables do
+      readables[i]=file.join(readables[i],base,more)
+    end
+  end
+  if trace_cache then
+    for i=1,#readables do
+      report_caches("using readable path %a (order %s)",readables[i],i)
+    end
+    report_caches("using writable path %a",writable)
+  end
+  identify=function()
+    return writable,readables
+  end
+  return writable,readables
+end
+function caches.usedpaths(separator)
+  local writable,readables=identify()
+  if #readables>1 then
+    local result={}
+    local done={}
+    for i=1,#readables do
+      local readable=readables[i]
+      if readable==writable then
+        done[readable]=true
+        result[#result+1]=formatters["readable+writable: %a"](readable)
+      elseif usedreadables[i] then
+        done[readable]=true
+        result[#result+1]=formatters["readable: %a"](readable)
+      end
+    end
+    if not done[writable] then
+      result[#result+1]=formatters["writable: %a"](writable)
+    end
+    return concat(result,separator or " | ")
+  else
+    return writable or "?"
+  end
+end
+function caches.configfiles()
+  return concat(resolvers.instance.specification,";")
+end
+function caches.hashed(tree)
+  tree=gsub(tree,"[\\/]+$","")
+  tree=lower(tree)
+  local hash=md5.hex(tree)
+  if trace_cache or trace_locating then
+    report_caches("hashing tree %a, hash %a",tree,hash)
+  end
+  return hash
+end
+function caches.treehash()
+  local tree=caches.configfiles()
+  if not tree or tree=="" then
+    return false
+  else
+    return caches.hashed(tree)
+  end
+end
+local r_cache,w_cache={},{} 
+local function getreadablepaths(...)
+  local tags={... }
+  local hash=concat(tags,"/")
+  local done=r_cache[hash]
+  if not done then
+    local writable,readables=identify() 
+    if #tags>0 then
+      done={}
+      for i=1,#readables do
+        done[i]=file.join(readables[i],...)
+      end
+    else
+      done=readables
+    end
+    r_cache[hash]=done
+  end
+  return done
+end
+local function getwritablepath(...)
+  local tags={... }
+  local hash=concat(tags,"/")
+  local done=w_cache[hash]
+  if not done then
+    local writable,readables=identify() 
+    if #tags>0 then
+      done=mkdirs(writable,...)
+    else
+      done=writable
+    end
+    w_cache[hash]=done
+  end
+  return done
+end
+caches.getreadablepaths=getreadablepaths
+caches.getwritablepath=getwritablepath
+function caches.getfirstreadablefile(filename,...)
+  local rd=getreadablepaths(...)
+  for i=1,#rd do
+    local path=rd[i]
+    local fullname=file.join(path,filename)
+    if is_readable(fullname) then
+      usedreadables[i]=true
+      return fullname,path
+    end
+  end
+  return caches.setfirstwritablefile(filename,...)
+end
+function caches.getfirstreadablefile_TEST_ME_FIRST(filename,...)
+  local fullname,path=caches.setfirstwritablefile(filename,...)
+  if is_readable(fullname) then
+    return fullname,path 
+  end
+  local rd=getreadablepaths(...)
+  for i=1,#rd do
+    local path=rd[i]
+    local fullname=file.join(path,filename)
+    if is_readable(fullname) then
+      usedreadables[i]=true
+      return fullname,path 
+    end
+  end
+  return fullname,path 
+end
+function caches.setfirstwritablefile(filename,...)
+  local wr=getwritablepath(...)
+  local fullname=file.join(wr,filename)
+  return fullname,wr
+end
+function caches.define(category,subcategory) 
+  return function()
+    return getwritablepath(category,subcategory)
+  end
+end
+function caches.setluanames(path,name)
+  return format("%s/%s.%s",path,name,luasuffixes.tma),format("%s/%s.%s",path,name,luasuffixes.tmc)
+end
+function caches.loaddata(readables,name)
+  if type(readables)=="string" then
+    readables={ readables }
+  end
+  for i=1,#readables do
+    local path=readables[i]
+    local tmaname,tmcname=caches.setluanames(path,name)
+    local loader=false
+    if isfile(tmcname) then
+      loader=loadfile(tmcname)
+    end
+    if not loader and isfile(tmaname) then
+      utilities.lua.compile(tmaname,tmcname)
+      if isfile(tmcname) then
+        loader=loadfile(tmcname)
+      end
+      if not loader then
+        loader=loadfile(tmaname)
+      end
+    end
+    if loader then
+      loader=loader()
+      collectgarbage("step")
+      return loader
+    end
+  end
+  return false
+end
+function caches.is_writable(filepath,filename)
+  local tmaname,tmcname=caches.setluanames(filepath,filename)
+  return is_writable(tmaname)
+end
+local saveoptions={ compact=true }
+function caches.savedata(filepath,filename,data,raw)
+  local tmaname,tmcname=caches.setluanames(filepath,filename)
+  local reduce,simplify=true,true
+  if raw then
+    reduce,simplify=false,false
+  end
+  data.cache_uuid=os.uuid()
+  if caches.direct then
+    file.savedata(tmaname,serialize(data,true,saveoptions))
+  else
+    serializetofile(tmaname,data,true,saveoptions)
+  end
+  utilities.lua.compile(tmaname,tmcname)
+end
+local content_state={}
+function caches.contentstate()
+  return content_state or {}
+end
+function caches.loadcontent(cachename,dataname)
+  local name=caches.hashed(cachename)
+  local full,path=caches.getfirstreadablefile(addsuffix(name,luasuffixes.lua),"trees")
+  local filename=file.join(path,name)
+  local blob=loadfile(addsuffix(filename,luasuffixes.luc)) or loadfile(addsuffix(filename,luasuffixes.lua))
+  if blob then
+    local data=blob()
+    if data and data.content then
+      if data.type==dataname then
+        if data.version==resolvers.cacheversion then
+          content_state[#content_state+1]=data.uuid
+          if trace_locating then
+            report_resolvers("loading %a for %a from %a",dataname,cachename,filename)
+          end
+          return data.content
+        else
+          report_resolvers("skipping %a for %a from %a (version mismatch)",dataname,cachename,filename)
+        end
+      else
+        report_resolvers("skipping %a for %a from %a (datatype mismatch)",dataname,cachename,filename)
+      end
+    elseif trace_locating then
+      report_resolvers("skipping %a for %a from %a (no content)",dataname,cachename,filename)
+    end
+  elseif trace_locating then
+    report_resolvers("skipping %a for %a from %a (invalid file)",dataname,cachename,filename)
+  end
+end
+function caches.collapsecontent(content)
+  for k,v in next,content do
+    if type(v)=="table" and #v==1 then
+      content[k]=v[1]
+    end
+  end
+end
+function caches.savecontent(cachename,dataname,content)
+  local name=caches.hashed(cachename)
+  local full,path=caches.setfirstwritablefile(addsuffix(name,luasuffixes.lua),"trees")
+  local filename=file.join(path,name) 
+  local luaname=addsuffix(filename,luasuffixes.lua)
+  local lucname=addsuffix(filename,luasuffixes.luc)
+  if trace_locating then
+    report_resolvers("preparing %a for %a",dataname,cachename)
+  end
+  local data={
+    type=dataname,
+    root=cachename,
+    version=resolvers.cacheversion,
+    date=os.date("%Y-%m-%d"),
+    time=os.date("%H:%M:%S"),
+    content=content,
+    uuid=os.uuid(),
+  }
+  local ok=io.savedata(luaname,serialize(data,true))
+  if ok then
+    if trace_locating then
+      report_resolvers("category %a, cachename %a saved in %a",dataname,cachename,luaname)
+    end
+    if utilities.lua.compile(luaname,lucname) then
+      if trace_locating then
+        report_resolvers("%a compiled to %a",dataname,lucname)
+      end
+      return true
+    else
+      if trace_locating then
+        report_resolvers("compiling failed for %a, deleting file %a",dataname,lucname)
+      end
+      os.remove(lucname)
+    end
+  elseif trace_locating then
+    report_resolvers("unable to save %a in %a (access error)",dataname,luaname)
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-met"] = package.loaded["data-met"] or true
+
+-- original size: 5453, stripped down to: 4007
+
+if not modules then modules={} end modules ['data-met']={
+  version=1.100,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local find,format=string.find,string.format
+local sequenced=table.sequenced
+local addurlscheme,urlhashed=url.addscheme,url.hashed
+local getcurrentdir=lfs.currentdir
+local trace_locating=false
+local trace_methods=false
+trackers.register("resolvers.locating",function(v) trace_methods=v end)
+trackers.register("resolvers.methods",function(v) trace_methods=v end)
+local report_methods=logs.reporter("resolvers","methods")
+local allocate=utilities.storage.allocate
+local resolvers=resolvers
+local registered={}
+local function splitmethod(filename) 
+  if not filename then
+    return { scheme="unknown",original=filename }
+  end
+  if type(filename)=="table" then
+    return filename 
+  end
+  filename=file.collapsepath(filename,".")
+  if not find(filename,"://") then
+    return { scheme="file",path=filename,original=filename,filename=filename }
+  end
+  local specification=url.hashed(filename)
+  if not specification.scheme or specification.scheme=="" then
+    return { scheme="file",path=filename,original=filename,filename=filename }
+  else
+    return specification
+  end
+end
+resolvers.splitmethod=splitmethod
+local function methodhandler(what,first,...) 
+  local method=registered[what]
+  if method then
+    local how,namespace=method.how,method.namespace
+    if how=="uri" or how=="url" then
+      local specification=splitmethod(first)
+      local scheme=specification.scheme
+      local resolver=namespace and namespace[scheme]
+      if resolver then
+        if trace_methods then
+          report_methods("resolving, method %a, how %a, handler %a, argument %a",what,how,scheme,first)
+        end
+        return resolver(specification,...)
+      else
+        resolver=namespace.default or namespace.file
+        if resolver then
+          if trace_methods then
+            report_methods("resolving, method %a, how %a, handler %a, argument %a",what,how,"default",first)
+          end
+          return resolver(specification,...)
+        elseif trace_methods then
+          report_methods("resolving, method %a, how %a, handler %a, argument %a",what,how,"unset")
+        end
+      end
+    elseif how=="tag" then
+      local resolver=namespace and namespace[first]
+      if resolver then
+        if trace_methods then
+          report_methods("resolving, method %a, how %a, tag %a",what,how,first)
+        end
+        return resolver(...)
+      else
+        resolver=namespace.default or namespace.file
+        if resolver then
+          if trace_methods then
+            report_methods("resolving, method %a, how %a, tag %a",what,how,"default")
+          end
+          return resolver(...)
+        elseif trace_methods then
+          report_methods("resolving, method %a, how %a, tag %a",what,how,"unset")
+        end
+      end
+    end
+  else
+    report_methods("resolving, invalid method %a")
+  end
+end
+resolvers.methodhandler=methodhandler
+function resolvers.registermethod(name,namespace,how)
+  registered[name]={ how=how or "tag",namespace=namespace }
+  namespace["byscheme"]=function(scheme,filename,...)
+    if scheme=="file" then
+      return methodhandler(name,filename,...)
+    else
+      return methodhandler(name,addurlscheme(filename,scheme),...)
+    end
+  end
+end
+local concatinators=allocate { notfound=file.join    } 
+local locators=allocate { notfound=function() end } 
+local hashers=allocate { notfound=function() end } 
+local generators=allocate { notfound=function() end } 
+resolvers.concatinators=concatinators
+resolvers.locators=locators
+resolvers.hashers=hashers
+resolvers.generators=generators
+local registermethod=resolvers.registermethod
+registermethod("concatinators",concatinators,"tag")
+registermethod("locators",locators,"uri")
+registermethod("hashers",hashers,"uri")
+registermethod("generators",generators,"uri")
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-res"] = package.loaded["data-res"] or true
+
+-- original size: 61799, stripped down to: 42957
+
+if not modules then modules={} end modules ['data-res']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files",
+}
+local gsub,find,lower,upper,match,gmatch=string.gsub,string.find,string.lower,string.upper,string.match,string.gmatch
+local concat,insert,sortedkeys=table.concat,table.insert,table.sortedkeys
+local next,type,rawget=next,type,rawget
+local os=os
+local P,S,R,C,Cc,Cs,Ct,Carg=lpeg.P,lpeg.S,lpeg.R,lpeg.C,lpeg.Cc,lpeg.Cs,lpeg.Ct,lpeg.Carg
+local lpegmatch,lpegpatterns=lpeg.match,lpeg.patterns
+local formatters=string.formatters
+local filedirname=file.dirname
+local filebasename=file.basename
+local suffixonly=file.suffixonly
+local filejoin=file.join
+local collapsepath=file.collapsepath
+local joinpath=file.joinpath
+local allocate=utilities.storage.allocate
+local settings_to_array=utilities.parsers.settings_to_array
+local setmetatableindex=table.setmetatableindex
+local luasuffixes=utilities.lua.suffixes
+local getcurrentdir=lfs.currentdir
+local trace_locating=false trackers.register("resolvers.locating",function(v) trace_locating=v end)
+local trace_detail=false trackers.register("resolvers.details",function(v) trace_detail=v end)
+local trace_expansions=false trackers.register("resolvers.expansions",function(v) trace_expansions=v end)
+local report_resolving=logs.reporter("resolvers","resolving")
+local resolvers=resolvers
+local expandedpathfromlist=resolvers.expandedpathfromlist
+local checkedvariable=resolvers.checkedvariable
+local splitconfigurationpath=resolvers.splitconfigurationpath
+local methodhandler=resolvers.methodhandler
+local initializesetter=utilities.setters.initialize
+local ostype,osname,osenv,ossetenv,osgetenv=os.type,os.name,os.env,os.setenv,os.getenv
+resolvers.cacheversion='1.0.1'
+resolvers.configbanner=''
+resolvers.homedir=environment.homedir
+resolvers.criticalvars=allocate { "SELFAUTOLOC","SELFAUTODIR","SELFAUTOPARENT","TEXMFCNF","TEXMF","TEXOS" }
+resolvers.luacnfname="texmfcnf.lua"
+resolvers.luacnfstate="unknown"
+if environment.default_texmfcnf then
+  resolvers.luacnfspec="home:texmf/web2c;"..environment.default_texmfcnf 
+else
+  resolvers.luacnfspec=concat ({
+    "home:texmf/web2c",
+    "selfautoparent:/texmf-local/web2c",
+    "selfautoparent:/texmf-context/web2c",
+    "selfautoparent:/texmf-dist/web2c",
+    "selfautoparent:/texmf/web2c",
+  },";")
+end
+local unset_variable="unset"
+local formats=resolvers.formats
+local suffixes=resolvers.suffixes
+local dangerous=resolvers.dangerous
+local suffixmap=resolvers.suffixmap
+resolvers.defaultsuffixes={ "tex" } 
+resolvers.instance=resolvers.instance or nil 
+local   instance=resolvers.instance or nil
+function resolvers.setenv(key,value,raw)
+  if instance then
+    instance.environment[key]=value
+    ossetenv(key,raw and value or resolvers.resolve(value))
+  end
+end
+local function getenv(key)
+  local value=rawget(instance.environment,key)
+  if value and value~="" then
+    return value
+  else
+    local e=osgetenv(key)
+    return e~=nil and e~="" and checkedvariable(e) or ""
+  end
+end
+resolvers.getenv=getenv
+resolvers.env=getenv
+local function resolve(k)
+  return instance.expansions[k]
+end
+local dollarstripper=lpeg.stripper("$")
+local inhibitstripper=P("!")^0*Cs(P(1)^0)
+local backslashswapper=lpeg.replacer("\\","/")
+local somevariable=P("$")/""
+local somekey=C(R("az","AZ","09","__","--")^1)
+local somethingelse=P(";")*((1-S("!{}/\\"))^1*P(";")/"")+P(";")*(P(";")/"")+P(1)
+local variableexpander=Cs((somevariable*(somekey/resolve)+somethingelse)^1 )
+local cleaner=P("\\")/"/"+P(";")*S("!{}/\\")^0*P(";")^1/";"
+local variablecleaner=Cs((cleaner+P(1))^0)
+local somevariable=R("az","AZ","09","__","--")^1/resolve
+local variable=(P("$")/"")*(somevariable+(P("{")/"")*somevariable*(P("}")/""))
+local variableresolver=Cs((variable+P(1))^0)
+local function expandedvariable(var)
+  return lpegmatch(variableexpander,var) or var
+end
+function resolvers.newinstance() 
+   if trace_locating then
+    report_resolving("creating instance")
+   end
+  local environment,variables,expansions,order=allocate(),allocate(),allocate(),allocate()
+  local newinstance={
+    environment=environment,
+    variables=variables,
+    expansions=expansions,
+    order=order,
+    files=allocate(),
+    setups=allocate(),
+    found=allocate(),
+    foundintrees=allocate(),
+    hashes=allocate(),
+    hashed=allocate(),
+    specification=allocate(),
+    lists=allocate(),
+    data=allocate(),
+    fakepaths=allocate(),
+    remember=true,
+    diskcache=true,
+    renewcache=false,
+    renewtree=false,
+    loaderror=false,
+    savelists=true,
+    pattern=nil,
+    force_suffixes=true,
+  }
+  setmetatableindex(variables,function(t,k)
+    local v
+    for i=1,#order do
+      v=order[i][k]
+      if v~=nil then
+        t[k]=v
+        return v
+      end
+    end
+    if v==nil then
+      v=""
+    end
+    t[k]=v
+    return v
+  end)
+  setmetatableindex(environment,function(t,k)
+    local v=osgetenv(k)
+    if v==nil then
+      v=variables[k]
+    end
+    if v~=nil then
+      v=checkedvariable(v) or ""
+    end
+    v=resolvers.repath(v) 
+    t[k]=v
+    return v
+  end)
+  setmetatableindex(expansions,function(t,k)
+    local v=environment[k]
+    if type(v)=="string" then
+      v=lpegmatch(variableresolver,v)
+      v=lpegmatch(variablecleaner,v)
+    end
+    t[k]=v
+    return v
+  end)
+  return newinstance
+end
+function resolvers.setinstance(someinstance) 
+  instance=someinstance
+  resolvers.instance=someinstance
+  return someinstance
+end
+function resolvers.reset()
+  return resolvers.setinstance(resolvers.newinstance())
+end
+local function reset_hashes()
+  instance.lists={}
+  instance.found={}
+end
+local slash=P("/")
+local pathexpressionpattern=Cs (
+  Cc("^")*(
+    Cc("%")*S(".-")+slash^2*P(-1)/"/.*"
++slash^2/"/"+(1-slash)*P(-1)*Cc("/")+P(1)
+  )^1*Cc("$") 
+)
+local cache={}
+local function makepathexpression(str)
+  if str=="." then
+    return "^%./$"
+  else
+    local c=cache[str]
+    if not c then
+      c=lpegmatch(pathexpressionpattern,str)
+      cache[str]=c
+    end
+    return c
+  end
+end
+local function reportcriticalvariables(cnfspec)
+  if trace_locating then
+    for i=1,#resolvers.criticalvars do
+      local k=resolvers.criticalvars[i]
+      local v=resolvers.getenv(k) or "unknown" 
+      report_resolving("variable %a set to %a",k,v)
+    end
+    report_resolving()
+    if cnfspec then
+      report_resolving("using configuration specification %a",type(cnfspec)=="table" and concat(cnfspec,",") or cnfspec)
+    end
+    report_resolving()
+  end
+  reportcriticalvariables=function() end
+end
+local function identify_configuration_files()
+  local specification=instance.specification
+  if #specification==0 then
+    local cnfspec=getenv("TEXMFCNF")
+    if cnfspec=="" then
+      cnfspec=resolvers.luacnfspec
+      resolvers.luacnfstate="default"
+    else
+      resolvers.luacnfstate="environment"
+    end
+    reportcriticalvariables(cnfspec)
+    local cnfpaths=expandedpathfromlist(resolvers.splitpath(cnfspec))
+    local luacnfname=resolvers.luacnfname
+    for i=1,#cnfpaths do
+      local filepath=cnfpaths[i]
+      local filename=collapsepath(filejoin(filepath,luacnfname))
+      local realname=resolvers.resolve(filename)
+      if trace_locating then
+        local fullpath=gsub(resolvers.resolve(collapsepath(filepath)),"//","/")
+        local weirdpath=find(fullpath,"/texmf.+/texmf") or not find(fullpath,"/web2c")
+        report_resolving("looking for %a on %s path %a from specification %a",luacnfname,weirdpath and "weird" or "given",fullpath,filepath)
+      end
+      if lfs.isfile(realname) then
+        specification[#specification+1]=filename 
+        if trace_locating then
+          report_resolving("found configuration file %a",realname)
+        end
+      end
+    end
+    if trace_locating then
+      report_resolving()
+    end
+  elseif trace_locating then
+    report_resolving("configuration files already identified")
+  end
+end
+local function load_configuration_files()
+  local specification=instance.specification
+  if #specification>0 then
+    local luacnfname=resolvers.luacnfname
+    for i=1,#specification do
+      local filename=specification[i]
+      local pathname=filedirname(filename)
+      local filename=filejoin(pathname,luacnfname)
+      local realname=resolvers.resolve(filename) 
+      local blob=loadfile(realname)
+      if blob then
+        local setups=instance.setups
+        local data=blob()
+        local parent=data and data.parent
+        if parent then
+          local filename=filejoin(pathname,parent)
+          local realname=resolvers.resolve(filename) 
+          local blob=loadfile(realname)
+          if blob then
+            local parentdata=blob()
+            if parentdata then
+              report_resolving("loading configuration file %a",filename)
+              data=table.merged(parentdata,data)
+            end
+          end
+        end
+        data=data and data.content
+        if data then
+          if trace_locating then
+            report_resolving("loading configuration file %a",filename)
+            report_resolving()
+          end
+          local variables=data.variables or {}
+          local warning=false
+          for k,v in next,data do
+            local variant=type(v)
+            if variant=="table" then
+              initializesetter(filename,k,v)
+            elseif variables[k]==nil then
+              if trace_locating and not warning then
+                report_resolving("variables like %a in configuration file %a should move to the 'variables' subtable",
+                  k,resolvers.resolve(filename))
+                warning=true
+              end
+              variables[k]=v
+            end
+          end
+          setups[pathname]=variables
+          if resolvers.luacnfstate=="default" then
+            local cnfspec=variables["TEXMFCNF"]
+            if cnfspec then
+              if trace_locating then
+                report_resolving("reloading configuration due to TEXMF redefinition")
+              end
+              resolvers.setenv("TEXMFCNF",cnfspec)
+              instance.specification={}
+              identify_configuration_files()
+              load_configuration_files()
+              resolvers.luacnfstate="configuration"
+              break
+            end
+          end
+        else
+          if trace_locating then
+            report_resolving("skipping configuration file %a (no content)",filename)
+          end
+          setups[pathname]={}
+          instance.loaderror=true
+        end
+      elseif trace_locating then
+        report_resolving("skipping configuration file %a (no valid format)",filename)
+      end
+      instance.order[#instance.order+1]=instance.setups[pathname]
+      if instance.loaderror then
+        break
+      end
+    end
+  elseif trace_locating then
+    report_resolving("warning: no lua configuration files found")
+  end
+end
+local function load_file_databases()
+  instance.loaderror,instance.files=false,allocate()
+  if not instance.renewcache then
+    local hashes=instance.hashes
+    for k=1,#hashes do
+      local hash=hashes[k]
+      resolvers.hashers.byscheme(hash.type,hash.name)
+      if instance.loaderror then break end
+    end
+  end
+end
+local function locate_file_databases()
+  local texmfpaths=resolvers.expandedpathlist("TEXMF")
+  if #texmfpaths>0 then
+    for i=1,#texmfpaths do
+      local path=collapsepath(texmfpaths[i])
+      path=gsub(path,"/+$","") 
+      local stripped=lpegmatch(inhibitstripper,path) 
+      if stripped~="" then
+        local runtime=stripped==path
+        path=resolvers.cleanpath(path)
+        local spec=resolvers.splitmethod(stripped)
+        if runtime and (spec.noscheme or spec.scheme=="file") then
+          stripped="tree:///"..stripped
+        elseif spec.scheme=="cache" or spec.scheme=="file" then
+          stripped=spec.path
+        end
+        if trace_locating then
+          if runtime then
+            report_resolving("locating list of %a (runtime) (%s)",path,stripped)
+          else
+            report_resolving("locating list of %a (cached)",path)
+          end
+        end
+        methodhandler('locators',stripped)
+      end
+    end
+    if trace_locating then
+      report_resolving()
+    end
+  elseif trace_locating then
+    report_resolving("no texmf paths are defined (using TEXMF)")
+  end
+end
+local function generate_file_databases()
+  local hashes=instance.hashes
+  for k=1,#hashes do
+    local hash=hashes[k]
+    methodhandler('generators',hash.name)
+  end
+  if trace_locating then
+    report_resolving()
+  end
+end
+local function save_file_databases() 
+  for i=1,#instance.hashes do
+    local hash=instance.hashes[i]
+    local cachename=hash.name
+    if hash.cache then
+      local content=instance.files[cachename]
+      caches.collapsecontent(content)
+      if trace_locating then
+        report_resolving("saving tree %a",cachename)
+      end
+      caches.savecontent(cachename,"files",content)
+    elseif trace_locating then
+      report_resolving("not saving runtime tree %a",cachename)
+    end
+  end
+end
+function resolvers.renew(hashname)
+  if hashname and hashname~="" then
+    local expanded=resolvers.expansion(hashname) or ""
+    if expanded~="" then
+      if trace_locating then
+        report_resolving("identifying tree %a from %a",expanded,hashname)
+      end
+      hashname=expanded
+    else
+      if trace_locating then
+        report_resolving("identifying tree %a",hashname)
+      end
+    end
+    local realpath=resolvers.resolve(hashname)
+    if lfs.isdir(realpath) then
+      if trace_locating then
+        report_resolving("using path %a",realpath)
+      end
+      methodhandler('generators',hashname)
+      local content=instance.files[hashname]
+      caches.collapsecontent(content)
+      if trace_locating then
+        report_resolving("saving tree %a",hashname)
+      end
+      caches.savecontent(hashname,"files",content)
+    else
+      report_resolving("invalid path %a",realpath)
+    end
+  end
+end
+local function load_databases()
+  locate_file_databases()
+  if instance.diskcache and not instance.renewcache then
+    load_file_databases()
+    if instance.loaderror then
+      generate_file_databases()
+      save_file_databases()
+    end
+  else
+    generate_file_databases()
+    if instance.renewcache then
+      save_file_databases()
+    end
+  end
+end
+function resolvers.appendhash(type,name,cache)
+  if not instance.hashed[name] then
+    if trace_locating then
+      report_resolving("hash %a appended",name)
+    end
+    insert(instance.hashes,{ type=type,name=name,cache=cache } )
+    instance.hashed[name]=cache
+  end
+end
+function resolvers.prependhash(type,name,cache)
+  if not instance.hashed[name] then
+    if trace_locating then
+      report_resolving("hash %a prepended",name)
+    end
+    insert(instance.hashes,1,{ type=type,name=name,cache=cache } )
+    instance.hashed[name]=cache
+  end
+end
+function resolvers.extendtexmfvariable(specification) 
+  local t=resolvers.splitpath(getenv("TEXMF")) 
+  insert(t,1,specification)
+  local newspec=concat(t,",") 
+  if instance.environment["TEXMF"] then
+    instance.environment["TEXMF"]=newspec
+  elseif instance.variables["TEXMF"] then
+    instance.variables["TEXMF"]=newspec
+  else
+  end
+  reset_hashes()
+end
+function resolvers.splitexpansions()
+  local ie=instance.expansions
+  for k,v in next,ie do
+    local t,tn,h,p={},0,{},splitconfigurationpath(v)
+    for kk=1,#p do
+      local vv=p[kk]
+      if vv~="" and not h[vv] then
+        tn=tn+1
+        t[tn]=vv
+        h[vv]=true
+      end
+    end
+    if #t>1 then
+      ie[k]=t
+    else
+      ie[k]=t[1]
+    end
+  end
+end
+function resolvers.datastate()
+  return caches.contentstate()
+end
+function resolvers.variable(name)
+  local name=name and lpegmatch(dollarstripper,name)
+  local result=name and instance.variables[name]
+  return result~=nil and result or ""
+end
+function resolvers.expansion(name)
+  local name=name and lpegmatch(dollarstripper,name)
+  local result=name and instance.expansions[name]
+  return result~=nil and result or ""
+end
+function resolvers.unexpandedpathlist(str)
+  local pth=resolvers.variable(str)
+  local lst=resolvers.splitpath(pth)
+  return expandedpathfromlist(lst)
+end
+function resolvers.unexpandedpath(str)
+  return joinpath(resolvers.unexpandedpathlist(str))
+end
+local done={}
+function resolvers.resetextrapath()
+  local ep=instance.extra_paths
+  if not ep then
+    ep,done={},{}
+    instance.extra_paths=ep
+  elseif #ep>0 then
+    instance.lists,done={},{}
+  end
+end
+function resolvers.registerextrapath(paths,subpaths)
+  paths=settings_to_array(paths)
+  subpaths=settings_to_array(subpaths)
+  local ep=instance.extra_paths or {}
+  local oldn=#ep
+  local newn=oldn
+  local nofpaths=#paths
+  local nofsubpaths=#subpaths
+  if nofpaths>0 then
+    if nofsubpaths>0 then
+      for i=1,nofpaths do
+        local p=paths[i]
+        for j=1,nofsubpaths do
+          local s=subpaths[j]
+          local ps=p.."/"..s
+          if not done[ps] then
+            newn=newn+1
+            ep[newn]=resolvers.cleanpath(ps)
+            done[ps]=true
+          end
+        end
+      end
+    else
+      for i=1,nofpaths do
+        local p=paths[i]
+        if not done[p] then
+          newn=newn+1
+          ep[newn]=resolvers.cleanpath(p)
+          done[p]=true
+        end
+      end
+    end
+  elseif nofsubpaths>0 then
+    for i=1,oldn do
+      for j=1,nofsubpaths do
+        local s=subpaths[j]
+        local ps=ep[i].."/"..s
+        if not done[ps] then
+          newn=newn+1
+          ep[newn]=resolvers.cleanpath(ps)
+          done[ps]=true
+        end
+      end
+    end
+  end
+  if newn>0 then
+    instance.extra_paths=ep 
+  end
+  if newn>oldn then
+    instance.lists={} 
+  end
+end
+local function made_list(instance,list)
+  local ep=instance.extra_paths
+  if not ep or #ep==0 then
+    return list
+  else
+    local done,new,newn={},{},0
+    for k=1,#list do
+      local v=list[k]
+      if not done[v] then
+        if find(v,"^[%.%/]$") then
+          done[v]=true
+          newn=newn+1
+          new[newn]=v
+        else
+          break
+        end
+      end
+    end
+    for k=1,#ep do
+      local v=ep[k]
+      if not done[v] then
+        done[v]=true
+        newn=newn+1
+        new[newn]=v
+      end
+    end
+    for k=1,#list do
+      local v=list[k]
+      if not done[v] then
+        done[v]=true
+        newn=newn+1
+        new[newn]=v
+      end
+    end
+    return new
+  end
+end
+function resolvers.cleanpathlist(str)
+  local t=resolvers.expandedpathlist(str)
+  if t then
+    for i=1,#t do
+      t[i]=collapsepath(resolvers.cleanpath(t[i]))
+    end
+  end
+  return t
+end
+function resolvers.expandpath(str)
+  return joinpath(resolvers.expandedpathlist(str))
+end
+function resolvers.expandedpathlist(str)
+  if not str then
+    return {}
+  elseif instance.savelists then
+    str=lpegmatch(dollarstripper,str)
+    local lists=instance.lists
+    local lst=lists[str]
+    if not lst then
+      local l=made_list(instance,resolvers.splitpath(resolvers.expansion(str)))
+      lst=expandedpathfromlist(l)
+      lists[str]=lst
+    end
+    return lst
+  else
+    local lst=resolvers.splitpath(resolvers.expansion(str))
+    return made_list(instance,expandedpathfromlist(lst))
+  end
+end
+function resolvers.expandedpathlistfromvariable(str) 
+  str=lpegmatch(dollarstripper,str)
+  local tmp=resolvers.variableofformatorsuffix(str)
+  return resolvers.expandedpathlist(tmp~="" and tmp or str)
+end
+function resolvers.expandpathfromvariable(str)
+  return joinpath(resolvers.expandedpathlistfromvariable(str))
+end
+function resolvers.expandbraces(str)
+    local ori=str
+  local pth=expandedpathfromlist(resolvers.splitpath(ori))
+  return joinpath(pth)
+end
+function resolvers.registerfilehash(name,content,someerror)
+  if content then
+    instance.files[name]=content
+  else
+    instance.files[name]={}
+    if somerror==true then 
+      instance.loaderror=someerror
+    end
+  end
+end
+local function isreadable(name)
+  local readable=lfs.isfile(name) 
+  if trace_detail then
+    if readable then
+      report_resolving("file %a is readable",name)
+    else
+      report_resolving("file %a is not readable",name)
+    end
+  end
+  return readable
+end
+local function collect_files(names)
+  local filelist,noffiles={},0
+  for k=1,#names do
+    local fname=names[k]
+    if trace_detail then
+      report_resolving("checking name %a",fname)
+    end
+    local bname=filebasename(fname)
+    local dname=filedirname(fname)
+    if dname=="" or find(dname,"^%.") then
+      dname=false
+    else
+      dname=gsub(dname,"%*",".*")
+      dname="/"..dname.."$"
+    end
+    local hashes=instance.hashes
+    for h=1,#hashes do
+      local hash=hashes[h]
+      local blobpath=hash.name
+      local files=blobpath and instance.files[blobpath]
+      if files then
+        if trace_detail then
+          report_resolving("deep checking %a, base %a, pattern %a",blobpath,bname,dname)
+        end
+        local blobfile=files[bname]
+        if not blobfile then
+          local rname="remap:"..bname
+          blobfile=files[rname]
+          if blobfile then
+            bname=files[rname]
+            blobfile=files[bname]
+          end
+        end
+        if blobfile then
+          local blobroot=files.__path__ or blobpath
+          if type(blobfile)=='string' then
+            if not dname or find(blobfile,dname) then
+              local variant=hash.type
+              local search=filejoin(blobroot,blobfile,bname)
+              local result=methodhandler('concatinators',hash.type,blobroot,blobfile,bname)
+              if trace_detail then
+                report_resolving("match: variant %a, search %a, result %a",variant,search,result)
+              end
+              noffiles=noffiles+1
+              filelist[noffiles]={ variant,search,result }
+            end
+          else
+            for kk=1,#blobfile do
+              local vv=blobfile[kk]
+              if not dname or find(vv,dname) then
+                local variant=hash.type
+                local search=filejoin(blobroot,vv,bname)
+                local result=methodhandler('concatinators',hash.type,blobroot,vv,bname)
+                if trace_detail then
+                  report_resolving("match: variant %a, search %a, result %a",variant,search,result)
+                end
+                noffiles=noffiles+1
+                filelist[noffiles]={ variant,search,result }
+              end
+            end
+          end
+        end
+      elseif trace_locating then
+        report_resolving("no match in %a (%s)",blobpath,bname)
+      end
+    end
+  end
+  return noffiles>0 and filelist or nil
+end
+local fit={}
+function resolvers.registerintrees(filename,format,filetype,usedmethod,foundname)
+  local foundintrees=instance.foundintrees
+  if usedmethod=="direct" and filename==foundname and fit[foundname] then
+  else
+    local t={
+      filename=filename,
+      format=format~="" and format or nil,
+      filetype=filetype~="" and filetype or nil,
+      usedmethod=usedmethod,
+      foundname=foundname,
+    }
+    fit[foundname]=t
+    foundintrees[#foundintrees+1]=t
+  end
+end
+local function can_be_dir(name) 
+  local fakepaths=instance.fakepaths
+  if not fakepaths[name] then
+    if lfs.isdir(name) then
+      fakepaths[name]=1 
+    else
+      fakepaths[name]=2 
+    end
+  end
+  return fakepaths[name]==1
+end
+local preparetreepattern=Cs((P(".")/"%%."+P("-")/"%%-"+P(1))^0*Cc("$"))
+local collect_instance_files
+local function find_analyze(filename,askedformat,allresults)
+  local filetype,wantedfiles,ext='',{},suffixonly(filename)
+  wantedfiles[#wantedfiles+1]=filename
+  if askedformat=="" then
+    if ext=="" or not suffixmap[ext] then
+      local defaultsuffixes=resolvers.defaultsuffixes
+      for i=1,#defaultsuffixes do
+        local forcedname=filename..'.'..defaultsuffixes[i]
+        wantedfiles[#wantedfiles+1]=forcedname
+        filetype=resolvers.formatofsuffix(forcedname)
+        if trace_locating then
+          report_resolving("forcing filetype %a",filetype)
+        end
+      end
+    else
+      filetype=resolvers.formatofsuffix(filename)
+      if trace_locating then
+        report_resolving("using suffix based filetype %a",filetype)
+      end
+    end
+  else
+    if ext=="" or not suffixmap[ext] then
+      local format_suffixes=suffixes[askedformat]
+      if format_suffixes then
+        for i=1,#format_suffixes do
+          wantedfiles[#wantedfiles+1]=filename.."."..format_suffixes[i]
+        end
+      end
+    end
+    filetype=askedformat
+    if trace_locating then
+      report_resolving("using given filetype %a",filetype)
+    end
+  end
+  return filetype,wantedfiles
+end
+local function find_direct(filename,allresults)
+  if not dangerous[askedformat] and isreadable(filename) then
+    if trace_detail then
+      report_resolving("file %a found directly",filename)
+    end
+    return "direct",{ filename }
+  end
+end
+local function find_wildcard(filename,allresults)
+  if find(filename,'%*') then
+    if trace_locating then
+      report_resolving("checking wildcard %a",filename)
+    end
+    local method,result=resolvers.findwildcardfiles(filename)
+    if result then
+      return "wildcard",result
+    end
+  end
+end
+local function find_qualified(filename,allresults,askedformat,alsostripped) 
+  if not file.is_qualified_path(filename) then
+    return
+  end
+  if trace_locating then
+    report_resolving("checking qualified name %a",filename)
+  end
+  if isreadable(filename) then
+    if trace_detail then
+      report_resolving("qualified file %a found",filename)
+    end
+    return "qualified",{ filename }
+  end
+  if trace_detail then
+    report_resolving("locating qualified file %a",filename)
+  end
+  local forcedname,suffix="",suffixonly(filename)
+  if suffix=="" then 
+    local format_suffixes=askedformat=="" and resolvers.defaultsuffixes or suffixes[askedformat]
+    if format_suffixes then
+      for i=1,#format_suffixes do
+        local s=format_suffixes[i]
+        forcedname=filename.."."..s
+        if isreadable(forcedname) then
+          if trace_locating then
+            report_resolving("no suffix, forcing format filetype %a",s)
+          end
+          return "qualified",{ forcedname }
+        end
+      end
+    end
+  end
+  if alsostripped and suffix and suffix~="" then
+    local basename=filebasename(filename)
+    local pattern=lpegmatch(preparetreepattern,filename)
+    local savedformat=askedformat
+    local format=savedformat or ""
+    if format=="" then
+      askedformat=resolvers.formatofsuffix(suffix)
+    end
+    if not format then
+      askedformat="othertextfiles" 
+    end
+    if basename~=filename then
+      local resolved=collect_instance_files(basename,askedformat,allresults)
+      if #resolved==0 then
+        local lowered=lower(basename)
+        if filename~=lowered then
+          resolved=collect_instance_files(lowered,askedformat,allresults)
+        end
+      end
+      resolvers.format=savedformat
+      if #resolved>0 then
+        local result={}
+        for r=1,#resolved do
+          local rr=resolved[r]
+          if find(rr,pattern) then
+            result[#result+1]=rr
+          end
+        end
+        if #result>0 then
+          return "qualified",result
+        end
+      end
+    end
+  end
+end
+local function check_subpath(fname)
+  if isreadable(fname) then
+    if trace_detail then
+      report_resolving("found %a by deep scanning",fname)
+    end
+    return fname
+  end
+end
+local function find_intree(filename,filetype,wantedfiles,allresults)
+  local typespec=resolvers.variableofformat(filetype)
+  local pathlist=resolvers.expandedpathlist(typespec)
+  local method="intree"
+  if pathlist and #pathlist>0 then
+    local filelist=collect_files(wantedfiles)
+    local dirlist={}
+    if filelist then
+      for i=1,#filelist do
+        dirlist[i]=filedirname(filelist[i][3]).."/" 
+      end
+    end
+    if trace_detail then
+      report_resolving("checking filename %a",filename)
+    end
+    local resolve=resolvers.resolve
+    local result={}
+    for k=1,#pathlist do
+      local path=pathlist[k]
+      local pathname=lpegmatch(inhibitstripper,path)
+      local doscan=path==pathname 
+      if not find (pathname,'//$') then
+        doscan=false 
+      end
+      local done=false
+      if filelist then
+        local expression=makepathexpression(pathname)
+        if trace_detail then
+          report_resolving("using pattern %a for path %a",expression,pathname)
+        end
+        for k=1,#filelist do
+          local fl=filelist[k]
+          local f=fl[2]
+          local d=dirlist[k]
+          if find(d,expression) or find(resolve(d),expression) then
+            result[#result+1]=resolve(fl[3]) 
+            done=true
+            if allresults then
+              if trace_detail then
+                report_resolving("match to %a in hash for file %a and path %a, continue scanning",expression,f,d)
+              end
+            else
+              if trace_detail then
+                report_resolving("match to %a in hash for file %a and path %a, quit scanning",expression,f,d)
+              end
+              break
+            end
+          elseif trace_detail then
+            report_resolving("no match to %a in hash for file %a and path %a",expression,f,d)
+          end
+        end
+      end
+      if done then
+        method="database"
+      else
+        method="filesystem" 
+        pathname=gsub(pathname,"/+$","")
+        pathname=resolve(pathname)
+        local scheme=url.hasscheme(pathname)
+        if not scheme or scheme=="file" then
+          local pname=gsub(pathname,"%.%*$",'')
+          if not find(pname,"%*") then
+            if can_be_dir(pname) then
+              for k=1,#wantedfiles do
+                local w=wantedfiles[k]
+                local fname=check_subpath(filejoin(pname,w))
+                if fname then
+                  result[#result+1]=fname
+                  done=true
+                  if not allresults then
+                    break
+                  end
+                end
+              end
+              if not done and doscan then
+                local files=resolvers.simplescanfiles(pname,false,true)
+                for k=1,#wantedfiles do
+                  local w=wantedfiles[k]
+                  local subpath=files[w]
+                  if not subpath or subpath=="" then
+                  elseif type(subpath)=="string" then
+                    local fname=check_subpath(filejoin(pname,subpath,w))
+                    if fname then
+                      result[#result+1]=fname
+                      done=true
+                      if not allresults then
+                        break
+                      end
+                    end
+                  else
+                    for i=1,#subpath do
+                      local sp=subpath[i]
+                      if sp=="" then
+                      else
+                        local fname=check_subpath(filejoin(pname,sp,w))
+                        if fname then
+                          result[#result+1]=fname
+                          done=true
+                          if not allresults then
+                            break
+                          end
+                        end
+                      end
+                    end
+                    if done and not allresults then
+                      break
+                    end
+                  end
+                end
+              end
+            end
+          else
+          end
+        end
+      end
+      if done and not allresults then
+        break
+      end
+    end
+    if #result>0 then
+      return method,result
+    end
+  end
+end
+local function find_onpath(filename,filetype,wantedfiles,allresults)
+  if trace_detail then
+    report_resolving("checking filename %a, filetype %a, wanted files %a",filename,filetype,concat(wantedfiles," | "))
+  end
+  local result={}
+  for k=1,#wantedfiles do
+    local fname=wantedfiles[k]
+    if fname and isreadable(fname) then
+      filename=fname
+      result[#result+1]=filejoin('.',fname)
+      if not allresults then
+        break
+      end
+    end
+  end
+  if #result>0 then
+    return "onpath",result
+  end
+end
+local function find_otherwise(filename,filetype,wantedfiles,allresults) 
+  local filelist=collect_files(wantedfiles)
+  local fl=filelist and filelist[1]
+  if fl then
+    return "otherwise",{ resolvers.resolve(fl[3]) } 
+  end
+end
+collect_instance_files=function(filename,askedformat,allresults) 
+  askedformat=askedformat or ""
+  filename=collapsepath(filename,".")
+  filename=gsub(filename,"^%./",getcurrentdir().."/") 
+  if allresults then
+    local filetype,wantedfiles=find_analyze(filename,askedformat)
+    local results={
+      { find_direct  (filename,true) },
+      { find_wildcard (filename,true) },
+      { find_qualified(filename,true,askedformat) },
+      { find_intree  (filename,filetype,wantedfiles,true) },
+      { find_onpath  (filename,filetype,wantedfiles,true) },
+      { find_otherwise(filename,filetype,wantedfiles,true) },
+    }
+    local result,status,done={},{},{}
+    for k,r in next,results do
+      local method,list=r[1],r[2]
+      if method and list then
+        for i=1,#list do
+          local c=collapsepath(list[i])
+          if not done[c] then
+            result[#result+1]=c
+            done[c]=true
+          end
+          status[#status+1]=formatters["%-10s: %s"](method,c)
+        end
+      end
+    end
+    if trace_detail then
+      report_resolving("lookup status: %s",table.serialize(status,filename))
+    end
+    return result,status
+  else
+    local method,result,stamp,filetype,wantedfiles
+    if instance.remember then
+      stamp=formatters["%s--%s"](filename,askedformat)
+      result=stamp and instance.found[stamp]
+      if result then
+        if trace_locating then
+          report_resolving("remembered file %a",filename)
+        end
+        return result
+      end
+    end
+    method,result=find_direct(filename)
+    if not result then
+      method,result=find_wildcard(filename)
+      if not result then
+        method,result=find_qualified(filename,false,askedformat)
+        if not result then
+          filetype,wantedfiles=find_analyze(filename,askedformat)
+          method,result=find_intree(filename,filetype,wantedfiles)
+          if not result then
+            method,result=find_onpath(filename,filetype,wantedfiles)
+            if not result then
+              method,result=find_otherwise(filename,filetype,wantedfiles)
+            end
+          end
+        end
+      end
+    end
+    if result and #result>0 then
+      local foundname=collapsepath(result[1])
+      resolvers.registerintrees(filename,askedformat,filetype,method,foundname)
+      result={ foundname }
+    else
+      result={} 
+    end
+    if stamp then
+      if trace_locating then
+        report_resolving("remembering file %a",filename)
+      end
+      instance.found[stamp]=result
+    end
+    return result
+  end
+end
+local function findfiles(filename,filetype,allresults)
+  local result,status=collect_instance_files(filename,filetype or "",allresults)
+  if not result or #result==0 then
+    local lowered=lower(filename)
+    if filename~=lowered then
+      result,status=collect_instance_files(lowered,filetype or "",allresults)
+    end
+  end
+  return result or {},status
+end
+function resolvers.findfiles(filename,filetype)
+  return findfiles(filename,filetype,true)
+end
+function resolvers.findfile(filename,filetype)
+  return findfiles(filename,filetype,false)[1] or ""
+end
+function resolvers.findpath(filename,filetype)
+  return filedirname(findfiles(filename,filetype,false)[1] or "")
+end
+local function findgivenfiles(filename,allresults)
+  local bname,result=filebasename(filename),{}
+  local hashes=instance.hashes
+  local noffound=0
+  for k=1,#hashes do
+    local hash=hashes[k]
+    local files=instance.files[hash.name] or {}
+    local blist=files[bname]
+    if not blist then
+      local rname="remap:"..bname
+      blist=files[rname]
+      if blist then
+        bname=files[rname]
+        blist=files[bname]
+      end
+    end
+    if blist then
+      if type(blist)=='string' then
+        local found=methodhandler('concatinators',hash.type,hash.name,blist,bname) or ""
+        if found~="" then
+          noffound=noffound+1
+          result[noffound]=resolvers.resolve(found)
+          if not allresults then
+            break
+          end
+        end
+      else
+        for kk=1,#blist do
+          local vv=blist[kk]
+          local found=methodhandler('concatinators',hash.type,hash.name,vv,bname) or ""
+          if found~="" then
+            noffound=noffound+1
+            result[noffound]=resolvers.resolve(found)
+            if not allresults then break end
+          end
+        end
+      end
+    end
+  end
+  return result
+end
+function resolvers.findgivenfiles(filename)
+  return findgivenfiles(filename,true)
+end
+function resolvers.findgivenfile(filename)
+  return findgivenfiles(filename,false)[1] or ""
+end
+local function doit(path,blist,bname,tag,variant,result,allresults)
+  local done=false
+  if blist and variant then
+    local resolve=resolvers.resolve 
+    if type(blist)=='string' then
+      if find(lower(blist),path) then
+        local full=methodhandler('concatinators',variant,tag,blist,bname) or ""
+        result[#result+1]=resolve(full)
+        done=true
+      end
+    else
+      for kk=1,#blist do
+        local vv=blist[kk]
+        if find(lower(vv),path) then
+          local full=methodhandler('concatinators',variant,tag,vv,bname) or ""
+          result[#result+1]=resolve(full)
+          done=true
+          if not allresults then break end
+        end
+      end
+    end
+  end
+  return done
+end
+local makewildcard=Cs(
+  (P("^")^0*P("/")*P(-1)+P(-1))/".*"+(P("^")^0*P("/")/"")^0*(P("*")/".*"+P("-")/"%%-"+P(".")/"%%."+P("?")/"."+P("\\")/"/"+P(1))^0
+)
+function resolvers.wildcardpattern(pattern)
+  return lpegmatch(makewildcard,pattern) or pattern
+end
+local function findwildcardfiles(filename,allresults,result) 
+  result=result or {}
+  local base=filebasename(filename)
+  local dirn=filedirname(filename)
+  local path=lower(lpegmatch(makewildcard,dirn) or dirn)
+  local name=lower(lpegmatch(makewildcard,base) or base)
+  local files,done=instance.files,false
+  if find(name,"%*") then
+    local hashes=instance.hashes
+    for k=1,#hashes do
+      local hash=hashes[k]
+      local hashname,hashtype=hash.name,hash.type
+      for kk,hh in next,files[hashname] do
+        if not find(kk,"^remap:") then
+          if find(lower(kk),name) then
+            if doit(path,hh,kk,hashname,hashtype,result,allresults) then done=true end
+            if done and not allresults then break end
+          end
+        end
+      end
+    end
+  else
+    local hashes=instance.hashes
+    for k=1,#hashes do
+      local hash=hashes[k]
+      local hashname,hashtype=hash.name,hash.type
+      if doit(path,files[hashname][base],base,hashname,hashtype,result,allresults) then done=true end
+      if done and not allresults then break end
+    end
+  end
+  return result
+end
+function resolvers.findwildcardfiles(filename,result)
+  return findwildcardfiles(filename,true,result)
+end
+function resolvers.findwildcardfile(filename)
+  return findwildcardfiles(filename,false)[1] or ""
+end
+function resolvers.automount()
+end
+function resolvers.load(option)
+  statistics.starttiming(instance)
+  identify_configuration_files()
+  load_configuration_files()
+  if option~="nofiles" then
+    load_databases()
+    resolvers.automount()
+  end
+  statistics.stoptiming(instance)
+  local files=instance.files
+  return files and next(files) and true
+end
+function resolvers.loadtime()
+  return statistics.elapsedtime(instance)
+end
+local function report(str)
+  if trace_locating then
+    report_resolving(str) 
+  else
+    print(str)
+  end
+end
+function resolvers.dowithfilesandreport(command,files,...) 
+  if files and #files>0 then
+    if trace_locating then
+      report('') 
+    end
+    if type(files)=="string" then
+      files={ files }
+    end
+    for f=1,#files do
+      local file=files[f]
+      local result=command(file,...)
+      if type(result)=='string' then
+        report(result)
+      else
+        for i=1,#result do
+          report(result[i]) 
+        end
+      end
+    end
+  end
+end
+function resolvers.showpath(str)   
+  return joinpath(resolvers.expandedpathlist(resolvers.formatofvariable(str)))
+end
+function resolvers.registerfile(files,name,path)
+  if files[name] then
+    if type(files[name])=='string' then
+      files[name]={ files[name],path }
+    else
+      files[name]=path
+    end
+  else
+    files[name]=path
+  end
+end
+function resolvers.dowithpath(name,func)
+  local pathlist=resolvers.expandedpathlist(name)
+  for i=1,#pathlist do
+    func("^"..resolvers.cleanpath(pathlist[i]))
+  end
+end
+function resolvers.dowithvariable(name,func)
+  func(expandedvariable(name))
+end
+function resolvers.locateformat(name)
+  local engine=environment.ownmain or "luatex"
+  local barename=file.removesuffix(name)
+  local fullname=file.addsuffix(barename,"fmt")
+  local fmtname=caches.getfirstreadablefile(fullname,"formats",engine) or ""
+  if fmtname=="" then
+    fmtname=resolvers.findfile(fullname)
+    fmtname=resolvers.cleanpath(fmtname)
+  end
+  if fmtname~="" then
+    local barename=file.removesuffix(fmtname)
+    local luaname=file.addsuffix(barename,luasuffixes.lua)
+    local lucname=file.addsuffix(barename,luasuffixes.luc)
+    local luiname=file.addsuffix(barename,luasuffixes.lui)
+    if lfs.isfile(luiname) then
+      return barename,luiname
+    elseif lfs.isfile(lucname) then
+      return barename,lucname
+    elseif lfs.isfile(luaname) then
+      return barename,luaname
+    end
+  end
+  return nil,nil
+end
+function resolvers.booleanvariable(str,default)
+  local b=resolvers.expansion(str)
+  if b=="" then
+    return default
+  else
+    b=toboolean(b)
+    return (b==nil and default) or b
+  end
+end
+function resolvers.dowithfilesintree(pattern,handle,before,after) 
+  local instance=resolvers.instance
+  local hashes=instance.hashes
+  for i=1,#hashes do
+    local hash=hashes[i]
+    local blobtype=hash.type
+    local blobpath=hash.name
+    if blobpath then
+      if before then
+        before(blobtype,blobpath,pattern)
+      end
+      local files=instance.files[blobpath]
+      local total,checked,done=0,0,0
+      if files then
+        for k,v in table.sortedhash(files) do 
+          total=total+1
+          if find(k,"^remap:") then
+          elseif find(k,pattern) then
+            if type(v)=="string" then
+              checked=checked+1
+              if handle(blobtype,blobpath,v,k) then
+                done=done+1
+              end
+            else
+              checked=checked+#v
+              for i=1,#v do
+                if handle(blobtype,blobpath,v[i],k) then
+                  done=done+1
+                end
+              end
+            end
+          end
+        end
+      end
+      if after then
+        after(blobtype,blobpath,pattern,total,checked,done)
+      end
+    end
+  end
+end
+resolvers.obsolete=resolvers.obsolete or {}
+local obsolete=resolvers.obsolete
+resolvers.find_file=resolvers.findfile  obsolete.find_file=resolvers.findfile
+resolvers.find_files=resolvers.findfiles  obsolete.find_files=resolvers.findfiles
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-pre"] = package.loaded["data-pre"] or true
+
+-- original size: 6643, stripped down to: 4401
+
+if not modules then modules={} end modules ['data-pre']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local resolvers=resolvers
+local prefixes=utilities.storage.allocate()
+resolvers.prefixes=prefixes
+local cleanpath,findgivenfile,expansion=resolvers.cleanpath,resolvers.findgivenfile,resolvers.expansion
+local getenv=resolvers.getenv 
+local P,S,R,C,Cs,Cc,lpegmatch=lpeg.P,lpeg.S,lpeg.R,lpeg.C,lpeg.Cs,lpeg.Cc,lpeg.match
+local joinpath,basename,dirname=file.join,file.basename,file.dirname
+local getmetatable,rawset,type=getmetatable,rawset,type
+prefixes.environment=function(str)
+  return cleanpath(expansion(str))
+end
+prefixes.relative=function(str,n) 
+  if io.exists(str) then
+  elseif io.exists("./"..str) then
+    str="./"..str
+  else
+    local p="../"
+    for i=1,n or 2 do
+      if io.exists(p..str) then
+        str=p..str
+        break
+      else
+        p=p.."../"
+      end
+    end
+  end
+  return cleanpath(str)
+end
+prefixes.auto=function(str)
+  local fullname=prefixes.relative(str)
+  if not lfs.isfile(fullname) then
+    fullname=prefixes.locate(str)
+  end
+  return fullname
+end
+prefixes.locate=function(str)
+  local fullname=findgivenfile(str) or ""
+  return cleanpath((fullname~="" and fullname) or str)
+end
+prefixes.filename=function(str)
+  local fullname=findgivenfile(str) or ""
+  return cleanpath(basename((fullname~="" and fullname) or str)) 
+end
+prefixes.pathname=function(str)
+  local fullname=findgivenfile(str) or ""
+  return cleanpath(dirname((fullname~="" and fullname) or str))
+end
+prefixes.selfautoloc=function(str)
+  return cleanpath(joinpath(getenv('SELFAUTOLOC'),str))
+end
+prefixes.selfautoparent=function(str)
+  return cleanpath(joinpath(getenv('SELFAUTOPARENT'),str))
+end
+prefixes.selfautodir=function(str)
+  return cleanpath(joinpath(getenv('SELFAUTODIR'),str))
+end
+prefixes.home=function(str)
+  return cleanpath(joinpath(getenv('HOME'),str))
+end
+local function toppath()
+  local inputstack=resolvers.inputstack 
+  if not inputstack then         
+    return "."
+  end
+  local pathname=dirname(inputstack[#inputstack] or "")
+  if pathname=="" then
+    return "."
+  else
+    return pathname
+  end
+end
+resolvers.toppath=toppath
+prefixes.toppath=function(str)
+  return cleanpath(joinpath(toppath(),str))
+end
+prefixes.env=prefixes.environment
+prefixes.rel=prefixes.relative
+prefixes.loc=prefixes.locate
+prefixes.kpse=prefixes.locate
+prefixes.full=prefixes.locate
+prefixes.file=prefixes.filename
+prefixes.path=prefixes.pathname
+function resolvers.allprefixes(separator)
+  local all=table.sortedkeys(prefixes)
+  if separator then
+    for i=1,#all do
+      all[i]=all[i]..":"
+    end
+  end
+  return all
+end
+local function _resolve_(method,target)
+  local action=prefixes[method]
+  if action then
+    return action(target)
+  else
+    return method..":"..target
+  end
+end
+local resolved,abstract={},{}
+function resolvers.resetresolve(str)
+  resolved,abstract={},{}
+end
+local pattern=Cs((C(R("az")^2)*P(":")*C((1-S(" \"\';,"))^1)/_resolve_+P(1))^0)
+local prefix=C(R("az")^2)*P(":")
+local target=C((1-S(" \"\';,"))^1)
+local notarget=(#S(";,")+P(-1))*Cc("")
+local pattern=Cs(((prefix*(target+notarget))/_resolve_+P(1))^0)
+local function resolve(str) 
+  if type(str)=="table" then
+    local t={}
+    for i=1,#str do
+      t[i]=resolve(str[i])
+    end
+    return t
+  else
+    local res=resolved[str]
+    if not res then
+      res=lpegmatch(pattern,str)
+      resolved[str]=res
+      abstract[res]=str
+    end
+    return res
+  end
+end
+local function unresolve(str)
+  return abstract[str] or str
+end
+resolvers.resolve=resolve
+resolvers.unresolve=unresolve
+if type(os.uname)=="function" then
+  for k,v in next,os.uname() do
+    if not prefixes[k] then
+      prefixes[k]=function() return v end
+    end
+  end
+end
+if os.type=="unix" then
+  local pattern
+  local function makepattern(t,k,v)
+    if t then
+      rawset(t,k,v)
+    end
+    local colon=P(":")
+    for k,v in table.sortedpairs(prefixes) do
+      if p then
+        p=P(k)+p
+      else
+        p=P(k)
+      end
+    end
+    pattern=Cs((p*colon+colon/";"+P(1))^0)
+  end
+  makepattern()
+  getmetatable(prefixes).__newindex=makepattern
+  function resolvers.repath(str)
+    return lpegmatch(pattern,str)
+  end
+else 
+  function resolvers.repath(str)
+    return str
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-inp"] = package.loaded["data-inp"] or true
+
+-- original size: 910, stripped down to: 823
+
+if not modules then modules={} end modules ['data-inp']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local allocate=utilities.storage.allocate
+local resolvers=resolvers
+local methodhandler=resolvers.methodhandler
+local registermethod=resolvers.registermethod
+local finders=allocate { helpers={},notfound=function() end }
+local openers=allocate { helpers={},notfound=function() end }
+local loaders=allocate { helpers={},notfound=function() return false,nil,0 end }
+registermethod("finders",finders,"uri")
+registermethod("openers",openers,"uri")
+registermethod("loaders",loaders,"uri")
+resolvers.finders=finders
+resolvers.openers=openers
+resolvers.loaders=loaders
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-out"] = package.loaded["data-out"] or true
+
+-- original size: 530, stripped down to: 475
+
+if not modules then modules={} end modules ['data-out']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local allocate=utilities.storage.allocate
+local resolvers=resolvers
+local registermethod=resolvers.registermethod
+local savers=allocate { helpers={} }
+resolvers.savers=savers
+registermethod("savers",savers,"uri")
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-fil"] = package.loaded["data-fil"] or true
+
+-- original size: 3801, stripped down to: 3231
+
+if not modules then modules={} end modules ['data-fil']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local trace_locating=false trackers.register("resolvers.locating",function(v) trace_locating=v end)
+local report_files=logs.reporter("resolvers","files")
+local resolvers=resolvers
+local finders,openers,loaders,savers=resolvers.finders,resolvers.openers,resolvers.loaders,resolvers.savers
+local locators,hashers,generators,concatinators=resolvers.locators,resolvers.hashers,resolvers.generators,resolvers.concatinators
+local checkgarbage=utilities.garbagecollector and utilities.garbagecollector.check
+function locators.file(specification)
+  local name=specification.filename
+  local realname=resolvers.resolve(name) 
+  if realname and realname~='' and lfs.isdir(realname) then
+    if trace_locating then
+      report_files("file locator %a found as %a",name,realname)
+    end
+    resolvers.appendhash('file',name,true) 
+  elseif trace_locating then
+    report_files("file locator %a not found",name)
+  end
+end
+function hashers.file(specification)
+  local name=specification.filename
+  local content=caches.loadcontent(name,'files')
+  resolvers.registerfilehash(name,content,content==nil)
+end
+function generators.file(specification)
+  local path=specification.filename
+  local content=resolvers.scanfiles(path,false,true)
+  resolvers.registerfilehash(path,content,true)
+end
+concatinators.file=file.join
+function finders.file(specification,filetype)
+  local filename=specification.filename
+  local foundname=resolvers.findfile(filename,filetype)
+  if foundname and foundname~="" then
+    if trace_locating then
+      report_files("file finder: %a found",filename)
+    end
+    return foundname
+  else
+    if trace_locating then
+      report_files("file finder: %a not found",filename)
+    end
+    return finders.notfound()
+  end
+end
+function openers.helpers.textopener(tag,filename,f)
+  return {
+    reader=function()              return f:read () end,
+    close=function() logs.show_close(filename) return f:close() end,
+  }
+end
+function openers.file(specification,filetype)
+  local filename=specification.filename
+  if filename and filename~="" then
+    local f=io.open(filename,"r")
+    if f then
+      if trace_locating then
+        report_files("file opener: %a opened",filename)
+      end
+      return openers.helpers.textopener("file",filename,f)
+    end
+  end
+  if trace_locating then
+    report_files("file opener: %a not found",filename)
+  end
+  return openers.notfound()
+end
+function loaders.file(specification,filetype)
+  local filename=specification.filename
+  if filename and filename~="" then
+    local f=io.open(filename,"rb")
+    if f then
+      logs.show_load(filename)
+      if trace_locating then
+        report_files("file loader: %a loaded",filename)
+      end
+      local s=f:read("*a") 
+      if checkgarbage then
+        checkgarbage(#s)
+      end
+      f:close()
+      if s then
+        return true,s,#s
+      end
+    end
+  end
+  if trace_locating then
+    report_files("file loader: %a not found",filename)
+  end
+  return loaders.notfound()
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-con"] = package.loaded["data-con"] or true
+
+-- original size: 5010, stripped down to: 3588
+
+if not modules then modules={} end modules ['data-con']={
+  version=1.100,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local format,lower,gsub=string.format,string.lower,string.gsub
+local trace_cache=false trackers.register("resolvers.cache",function(v) trace_cache=v end)
+local trace_containers=false trackers.register("resolvers.containers",function(v) trace_containers=v end)
+local trace_storage=false trackers.register("resolvers.storage",function(v) trace_storage=v end)
+containers=containers or {}
+local containers=containers
+containers.usecache=true
+local report_containers=logs.reporter("resolvers","containers")
+local allocated={}
+local mt={
+  __index=function(t,k)
+    if k=="writable" then
+      local writable=caches.getwritablepath(t.category,t.subcategory) or { "." }
+      t.writable=writable
+      return writable
+    elseif k=="readables" then
+      local readables=caches.getreadablepaths(t.category,t.subcategory) or { "." }
+      t.readables=readables
+      return readables
+    end
+  end,
+  __storage__=true
+}
+function containers.define(category,subcategory,version,enabled)
+  if category and subcategory then
+    local c=allocated[category]
+    if not c then
+      c={}
+      allocated[category]=c
+    end
+    local s=c[subcategory]
+    if not s then
+      s={
+        category=category,
+        subcategory=subcategory,
+        storage={},
+        enabled=enabled,
+        version=version or math.pi,
+        trace=false,
+      }
+      setmetatable(s,mt)
+      c[subcategory]=s
+    end
+    return s
+  end
+end
+function containers.is_usable(container,name)
+  return container.enabled and caches and caches.is_writable(container.writable,name)
+end
+function containers.is_valid(container,name)
+  if name and name~="" then
+    local storage=container.storage[name]
+    return storage and storage.cache_version==container.version
+  else
+    return false
+  end
+end
+function containers.read(container,name)
+  local storage=container.storage
+  local stored=storage[name]
+  if not stored and container.enabled and caches and containers.usecache then
+    stored=caches.loaddata(container.readables,name)
+    if stored and stored.cache_version==container.version then
+      if trace_cache or trace_containers then
+        report_containers("action %a, category %a, name %a","load",container.subcategory,name)
+      end
+    else
+      stored=nil
+    end
+    storage[name]=stored
+  elseif stored then
+    if trace_cache or trace_containers then
+      report_containers("action %a, category %a, name %a","reuse",container.subcategory,name)
+    end
+  end
+  return stored
+end
+function containers.write(container,name,data)
+  if data then
+    data.cache_version=container.version
+    if container.enabled and caches then
+      local unique,shared=data.unique,data.shared
+      data.unique,data.shared=nil,nil
+      caches.savedata(container.writable,name,data)
+      if trace_cache or trace_containers then
+        report_containers("action %a, category %a, name %a","save",container.subcategory,name)
+      end
+      data.unique,data.shared=unique,shared
+    end
+    if trace_cache or trace_containers then
+      report_containers("action %a, category %a, name %a","store",container.subcategory,name)
+    end
+    container.storage[name]=data
+  end
+  return data
+end
+function containers.content(container,name)
+  return container.storage[name]
+end
+function containers.cleanname(name)
+  return (gsub(lower(name),"[^%w\128-\255]+","-")) 
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-use"] = package.loaded["data-use"] or true
+
+-- original size: 3899, stripped down to: 2984
+
+if not modules then modules={} end modules ['data-use']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local format,lower,gsub,find=string.format,string.lower,string.gsub,string.find
+local trace_locating=false trackers.register("resolvers.locating",function(v) trace_locating=v end)
+local report_mounts=logs.reporter("resolvers","mounts")
+local resolvers=resolvers
+resolvers.automounted=resolvers.automounted or {}
+function resolvers.automount(usecache)
+  local mountpaths=resolvers.cleanpathlist(resolvers.expansion('TEXMFMOUNT'))
+  if (not mountpaths or #mountpaths==0) and usecache then
+    mountpaths=caches.getreadablepaths("mount")
+  end
+  if mountpaths and #mountpaths>0 then
+    statistics.starttiming(resolvers.instance)
+    for k=1,#mountpaths do
+      local root=mountpaths[k]
+      local f=io.open(root.."/url.tmi")
+      if f then
+        for line in f:lines() do
+          if line then
+            if find(line,"^[%%#%-]") then
+            elseif find(line,"^zip://") then
+              if trace_locating then
+                report_mounts("mounting %a",line)
+              end
+              table.insert(resolvers.automounted,line)
+              resolvers.usezipfile(line)
+            end
+          end
+        end
+        f:close()
+      end
+    end
+    statistics.stoptiming(resolvers.instance)
+  end
+end
+statistics.register("used config file",function() return caches.configfiles() end)
+statistics.register("used cache path",function() return caches.usedpaths() end)
+function statistics.savefmtstatus(texname,formatbanner,sourcefile) 
+  local enginebanner=status.banner
+  if formatbanner and enginebanner and sourcefile then
+    local luvname=file.replacesuffix(texname,"luv") 
+    local luvdata={
+      enginebanner=enginebanner,
+      formatbanner=formatbanner,
+      sourcehash=md5.hex(io.loaddata(resolvers.findfile(sourcefile)) or "unknown"),
+      sourcefile=sourcefile,
+    }
+    io.savedata(luvname,table.serialize(luvdata,true))
+  end
+end
+function statistics.checkfmtstatus(texname)
+  local enginebanner=status.banner
+  if enginebanner and texname then
+    local luvname=file.replacesuffix(texname,"luv") 
+    if lfs.isfile(luvname) then
+      local luv=dofile(luvname)
+      if luv and luv.sourcefile then
+        local sourcehash=md5.hex(io.loaddata(resolvers.findfile(luv.sourcefile)) or "unknown")
+        local luvbanner=luv.enginebanner or "?"
+        if luvbanner~=enginebanner then
+          return format("engine mismatch (luv: %s <> bin: %s)",luvbanner,enginebanner)
+        end
+        local luvhash=luv.sourcehash or "?"
+        if luvhash~=sourcehash then
+          return format("source mismatch (luv: %s <> bin: %s)",luvhash,sourcehash)
+        end
+      else
+        return "invalid status file"
+      end
+    else
+      return "missing status file"
+    end
+  end
+  return true
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-zip"] = package.loaded["data-zip"] or true
+
+-- original size: 8489, stripped down to: 6757
+
+if not modules then modules={} end modules ['data-zip']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local format,find,match=string.format,string.find,string.match
+local trace_locating=false trackers.register("resolvers.locating",function(v) trace_locating=v end)
+local report_zip=logs.reporter("resolvers","zip")
+local resolvers=resolvers
+zip=zip or {}
+local zip=zip
+zip.archives=zip.archives or {}
+local archives=zip.archives
+zip.registeredfiles=zip.registeredfiles or {}
+local registeredfiles=zip.registeredfiles
+local limited=false
+directives.register("system.inputmode",function(v)
+  if not limited then
+    local i_limiter=io.i_limiter(v)
+    if i_limiter then
+      zip.open=i_limiter.protect(zip.open)
+      limited=true
+    end
+  end
+end)
+local function validzip(str) 
+  if not find(str,"^zip://") then
+    return "zip:///"..str
+  else
+    return str
+  end
+end
+function zip.openarchive(name)
+  if not name or name=="" then
+    return nil
+  else
+    local arch=archives[name]
+    if not arch then
+      local full=resolvers.findfile(name) or ""
+      arch=(full~="" and zip.open(full)) or false
+      archives[name]=arch
+    end
+    return arch
+  end
+end
+function zip.closearchive(name)
+  if not name or (name=="" and archives[name]) then
+    zip.close(archives[name])
+    archives[name]=nil
+  end
+end
+function resolvers.locators.zip(specification)
+  local archive=specification.filename
+  local zipfile=archive and archive~="" and zip.openarchive(archive) 
+  if trace_locating then
+    if zipfile then
+      report_zip("locator: archive %a found",archive)
+    else
+      report_zip("locator: archive %a not found",archive)
+    end
+  end
+end
+function resolvers.hashers.zip(specification)
+  local archive=specification.filename
+  if trace_locating then
+    report_zip("loading file %a",archive)
+  end
+  resolvers.usezipfile(specification.original)
+end
+function resolvers.concatinators.zip(zipfile,path,name) 
+  if not path or path=="" then
+    return format('%s?name=%s',zipfile,name)
+  else
+    return format('%s?name=%s/%s',zipfile,path,name)
+  end
+end
+function resolvers.finders.zip(specification)
+  local original=specification.original
+  local archive=specification.filename
+  if archive then
+    local query=url.query(specification.query)
+    local queryname=query.name
+    if queryname then
+      local zfile=zip.openarchive(archive)
+      if zfile then
+        if trace_locating then
+          report_zip("finder: archive %a found",archive)
+        end
+        local dfile=zfile:open(queryname)
+        if dfile then
+          dfile=zfile:close()
+          if trace_locating then
+            report_zip("finder: file %a found",queryname)
+          end
+          return specification.original
+        elseif trace_locating then
+          report_zip("finder: file %a not found",queryname)
+        end
+      elseif trace_locating then
+        report_zip("finder: unknown archive %a",archive)
+      end
+    end
+  end
+  if trace_locating then
+    report_zip("finder: %a not found",original)
+  end
+  return resolvers.finders.notfound()
+end
+function resolvers.openers.zip(specification)
+  local original=specification.original
+  local archive=specification.filename
+  if archive then
+    local query=url.query(specification.query)
+    local queryname=query.name
+    if queryname then
+      local zfile=zip.openarchive(archive)
+      if zfile then
+        if trace_locating then
+          report_zip("opener; archive %a opened",archive)
+        end
+        local dfile=zfile:open(queryname)
+        if dfile then
+          if trace_locating then
+            report_zip("opener: file %a found",queryname)
+          end
+          return resolvers.openers.helpers.textopener('zip',original,dfile)
+        elseif trace_locating then
+          report_zip("opener: file %a not found",queryname)
+        end
+      elseif trace_locating then
+        report_zip("opener: unknown archive %a",archive)
+      end
+    end
+  end
+  if trace_locating then
+    report_zip("opener: %a not found",original)
+  end
+  return resolvers.openers.notfound()
+end
+function resolvers.loaders.zip(specification)
+  local original=specification.original
+  local archive=specification.filename
+  if archive then
+    local query=url.query(specification.query)
+    local queryname=query.name
+    if queryname then
+      local zfile=zip.openarchive(archive)
+      if zfile then
+        if trace_locating then
+          report_zip("loader: archive %a opened",archive)
+        end
+        local dfile=zfile:open(queryname)
+        if dfile then
+          logs.show_load(original)
+          if trace_locating then
+            report_zip("loader; file %a loaded",original)
+          end
+          local s=dfile:read("*all")
+          dfile:close()
+          return true,s,#s
+        elseif trace_locating then
+          report_zip("loader: file %a not found",queryname)
+        end
+      elseif trace_locating then
+        report_zip("loader; unknown archive %a",archive)
+      end
+    end
+  end
+  if trace_locating then
+    report_zip("loader: %a not found",original)
+  end
+  return resolvers.openers.notfound()
+end
+function resolvers.usezipfile(archive)
+  local specification=resolvers.splitmethod(archive) 
+  local archive=specification.filename
+  if archive and not registeredfiles[archive] then
+    local z=zip.openarchive(archive)
+    if z then
+      local instance=resolvers.instance
+      local tree=url.query(specification.query).tree or ""
+      if trace_locating then
+        report_zip("registering: archive %a",archive)
+      end
+      statistics.starttiming(instance)
+      resolvers.prependhash('zip',archive)
+      resolvers.extendtexmfvariable(archive) 
+      registeredfiles[archive]=z
+      instance.files[archive]=resolvers.registerzipfile(z,tree)
+      statistics.stoptiming(instance)
+    elseif trace_locating then
+      report_zip("registering: unknown archive %a",archive)
+    end
+  elseif trace_locating then
+    report_zip("registering: archive %a not found",archive)
+  end
+end
+function resolvers.registerzipfile(z,tree)
+  local files,filter={},""
+  if tree=="" then
+    filter="^(.+)/(.-)$"
+  else
+    filter=format("^%s/(.+)/(.-)$",tree)
+  end
+  if trace_locating then
+    report_zip("registering: using filter %a",filter)
+  end
+  local register,n=resolvers.registerfile,0
+  for i in z:files() do
+    local path,name=match(i.filename,filter)
+    if path then
+      if name and name~='' then
+        register(files,name,path)
+        n=n+1
+      else
+      end
+    else
+      register(files,i.filename,'')
+      n=n+1
+    end
+  end
+  report_zip("registering: %s files registered",n)
+  return files
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-tre"] = package.loaded["data-tre"] or true
+
+-- original size: 2508, stripped down to: 2074
+
+if not modules then modules={} end modules ['data-tre']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local find,gsub,format=string.find,string.gsub,string.format
+local trace_locating=false trackers.register("resolvers.locating",function(v) trace_locating=v end)
+local report_trees=logs.reporter("resolvers","trees")
+local resolvers=resolvers
+local done,found,notfound={},{},resolvers.finders.notfound
+function resolvers.finders.tree(specification)
+  local spec=specification.filename
+  local fnd=found[spec]
+  if fnd==nil then
+    if spec~="" then
+      local path,name=file.dirname(spec),file.basename(spec)
+      if path=="" then path="." end
+      local hash=done[path]
+      if not hash then
+        local pattern=path.."/*" 
+        hash=dir.glob(pattern)
+        done[path]=hash
+      end
+      local pattern="/"..gsub(name,"([%.%-%+])","%%%1").."$"
+      for k=1,#hash do
+        local v=hash[k]
+        if find(v,pattern) then
+          found[spec]=v
+          return v
+        end
+      end
+    end
+    fnd=notfound() 
+    found[spec]=fnd
+  end
+  return fnd
+end
+function resolvers.locators.tree(specification)
+  local name=specification.filename
+  local realname=resolvers.resolve(name) 
+  if realname and realname~='' and lfs.isdir(realname) then
+    if trace_locating then
+      report_trees("locator %a found",realname)
+    end
+    resolvers.appendhash('tree',name,false) 
+  elseif trace_locating then
+    report_trees("locator %a not found",name)
+  end
+end
+function resolvers.hashers.tree(specification)
+  local name=specification.filename
+  if trace_locating then
+    report_trees("analysing %a",name)
+  end
+  resolvers.methodhandler("hashers",name)
+  resolvers.generators.file(specification)
+end
+resolvers.concatinators.tree=resolvers.concatinators.file
+resolvers.generators.tree=resolvers.generators.file
+resolvers.openers.tree=resolvers.openers.file
+resolvers.loaders.tree=resolvers.loaders.file
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-sch"] = package.loaded["data-sch"] or true
+
+-- original size: 6202, stripped down to: 5149
+
+if not modules then modules={} end modules ['data-sch']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local load=load
+local gsub,concat,format=string.gsub,table.concat,string.format
+local finders,openers,loaders=resolvers.finders,resolvers.openers,resolvers.loaders
+local trace_schemes=false trackers.register("resolvers.schemes",function(v) trace_schemes=v end)
+local report_schemes=logs.reporter("resolvers","schemes")
+local http=require("socket.http")
+local ltn12=require("ltn12")
+local resolvers=resolvers
+local schemes=resolvers.schemes or {}
+resolvers.schemes=schemes
+local cleaners={}
+schemes.cleaners=cleaners
+local threshold=24*60*60
+directives.register("schemes.threshold",function(v) threshold=tonumber(v) or threshold end)
+function cleaners.none(specification)
+  return specification.original
+end
+function cleaners.strip(specification)
+  return (gsub(specification.original,"[^%a%d%.]+","-")) 
+end
+function cleaners.md5(specification)
+  return file.addsuffix(md5.hex(specification.original),file.suffix(specification.path))
+end
+local cleaner=cleaners.strip
+directives.register("schemes.cleanmethod",function(v) cleaner=cleaners[v] or cleaners.strip end)
+function resolvers.schemes.cleanname(specification)
+  local hash=cleaner(specification)
+  if trace_schemes then
+    report_schemes("hashing %a to %a",specification.original,hash)
+  end
+  return hash
+end
+local cached,loaded,reused,thresholds,handlers={},{},{},{},{}
+local function runcurl(name,cachename) 
+  local command="curl --silent --create-dirs --output "..cachename.." "..name
+  os.spawn(command)
+end
+local function fetch(specification)
+  local original=specification.original
+  local scheme=specification.scheme
+  local cleanname=schemes.cleanname(specification)
+  local cachename=caches.setfirstwritablefile(cleanname,"schemes")
+  if not cached[original] then
+    statistics.starttiming(schemes)
+    if not io.exists(cachename) or (os.difftime(os.time(),lfs.attributes(cachename).modification)>(thresholds[protocol] or threshold)) then
+      cached[original]=cachename
+      local handler=handlers[scheme]
+      if handler then
+        if trace_schemes then
+          report_schemes("fetching %a, protocol %a, method %a",original,scheme,"built-in")
+        end
+        logs.flush()
+        handler(specification,cachename)
+      else
+        if trace_schemes then
+          report_schemes("fetching %a, protocol %a, method %a",original,scheme,"curl")
+        end
+        logs.flush()
+        runcurl(original,cachename)
+      end
+    end
+    if io.exists(cachename) then
+      cached[original]=cachename
+      if trace_schemes then
+        report_schemes("using cached %a, protocol %a, cachename %a",original,scheme,cachename)
+      end
+    else
+      cached[original]=""
+      if trace_schemes then
+        report_schemes("using missing %a, protocol %a",original,scheme)
+      end
+    end
+    loaded[scheme]=loaded[scheme]+1
+    statistics.stoptiming(schemes)
+  else
+    if trace_schemes then
+      report_schemes("reusing %a, protocol %a",original,scheme)
+    end
+    reused[scheme]=reused[scheme]+1
+  end
+  return cached[original]
+end
+local function finder(specification,filetype)
+  return resolvers.methodhandler("finders",fetch(specification),filetype)
+end
+local opener=openers.file
+local loader=loaders.file
+local function install(scheme,handler,newthreshold)
+  handlers [scheme]=handler
+  loaded  [scheme]=0
+  reused  [scheme]=0
+  finders  [scheme]=finder
+  openers  [scheme]=opener
+  loaders  [scheme]=loader
+  thresholds[scheme]=newthreshold or threshold
+end
+schemes.install=install
+local function http_handler(specification,cachename)
+  local tempname=cachename..".tmp"
+  local f=io.open(tempname,"wb")
+  local status,message=http.request {
+    url=specification.original,
+    sink=ltn12.sink.file(f)
+  }
+  if not status then
+    os.remove(tempname)
+  else
+    os.remove(cachename)
+    os.rename(tempname,cachename)
+  end
+  return cachename
+end
+install('http',http_handler)
+install('https') 
+install('ftp')
+statistics.register("scheme handling time",function()
+  local l,r,nl,nr={},{},0,0
+  for k,v in table.sortedhash(loaded) do
+    if v>0 then
+      nl=nl+1
+      l[nl]=k..":"..v
+    end
+  end
+  for k,v in table.sortedhash(reused) do
+    if v>0 then
+      nr=nr+1
+      r[nr]=k..":"..v
+    end
+  end
+  local n=nl+nr
+  if n>0 then
+    l=nl>0 and concat(l) or "none"
+    r=nr>0 and concat(r) or "none"
+    return format("%s seconds, %s processed, threshold %s seconds, loaded: %s, reused: %s",
+      statistics.elapsedtime(schemes),n,threshold,l,r)
+  else
+    return nil
+  end
+end)
+local httprequest=http.request
+local toquery=url.toquery
+local function fetchstring(url,data)
+  local q=data and toquery(data)
+  if q then
+    url=url.."?"..q
+  end
+  local reply=httprequest(url)
+  return reply 
+end
+schemes.fetchstring=fetchstring
+function schemes.fetchtable(url,data)
+  local reply=fetchstring(url,data)
+  if reply then
+    local s=load("return "..reply)
+    if s then
+      return s()
+    end
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-lua"] = package.loaded["data-lua"] or true
+
+-- original size: 4237, stripped down to: 3177
+
+if not modules then modules={} end modules ['data-lua']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local resolvers,package=resolvers,package
+local gsub=string.gsub
+local concat=table.concat
+local addsuffix=file.addsuffix
+local P,S,Cs,lpegmatch=lpeg.P,lpeg.S,lpeg.Cs,lpeg.match
+local luasuffixes={ 'tex','lua' }
+local libsuffixes={ 'lib' }
+local luaformats={ 'TEXINPUTS','LUAINPUTS' }
+local libformats={ 'CLUAINPUTS' }
+local helpers=package.helpers or {}
+local methods=helpers.methods or {}
+trackers.register("resolvers.libraries",function(v) helpers.trace=v end)
+trackers.register("resolvers.locating",function(v) helpers.trace=v end)
+helpers.report=logs.reporter("resolvers","libraries")
+helpers.sequence={
+  "already loaded",
+  "preload table",
+  "lua variable format",
+  "lib variable format",
+  "lua extra list",
+  "lib extra list",
+  "path specification",
+  "cpath specification",
+  "all in one fallback",
+  "not loaded",
+}
+local pattern=Cs(P("!")^0/""*(P("/")*P(-1)/"/"+P("/")^1/"/"+1)^0)
+function helpers.cleanpath(path) 
+  return resolvers.resolve(lpegmatch(pattern,path))
+end
+local loadedaslib=helpers.loadedaslib
+local getextraluapaths=package.extraluapaths
+local getextralibpaths=package.extralibpaths
+local registerpath=helpers.registerpath
+local lualibfile=helpers.lualibfile
+local luaformatpaths
+local libformatpaths
+local function getluaformatpaths()
+  if not luaformatpaths then
+    luaformatpaths={}
+    for i=1,#luaformats do
+      registerpath("lua format","lua",luaformatpaths,resolvers.expandedpathlistfromvariable(luaformats[i]))
+    end
+  end
+  return luaformatpaths
+end
+local function getlibformatpaths()
+  if not libformatpaths then
+    libformatpaths={}
+    for i=1,#libformats do
+      registerpath("lib format","lib",libformatpaths,resolvers.expandedpathlistfromvariable(libformats[i]))
+    end
+  end
+  return libformatpaths
+end
+local function loadedbyformat(name,rawname,suffixes,islib,what)
+  local trace=helpers.trace
+  local report=helpers.report
+  for i=1,#suffixes do 
+    local format=suffixes[i]
+    local resolved=resolvers.findfile(name,format) or ""
+    if trace then
+      report("%s format, identifying %a using format %a",what,name,format)
+    end
+    if resolved~="" then
+      if trace then
+        report("%s format, %a found on %a",what,name,resolved)
+      end
+      if islib then
+        return loadedaslib(resolved,rawname)
+      else
+        return loadfile(resolved)
+      end
+    end
+  end
+end
+helpers.loadedbyformat=loadedbyformat
+methods["lua variable format"]=function(name)
+  if helpers.trace then
+    helpers.report("%s format, checking %s paths","lua",#getluaformatpaths()) 
+  end
+  return loadedbyformat(addsuffix(lualibfile(name),"lua"),name,luasuffixes,false,"lua")
+end
+methods["lib variable format"]=function(name)
+  if helpers.trace then
+    helpers.report("%s format, checking %s paths","lib",#getlibformatpaths()) 
+  end
+  return loadedbyformat(addsuffix(lualibfile(name),os.libsuffix),name,libsuffixes,true,"lib")
+end
+resolvers.loadlualib=require 
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-aux"] = package.loaded["data-aux"] or true
+
+-- original size: 2394, stripped down to: 2005
+
+if not modules then modules={} end modules ['data-aux']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local find=string.find
+local type,next=type,next
+local trace_locating=false trackers.register("resolvers.locating",function(v) trace_locating=v end)
+local resolvers=resolvers
+local report_scripts=logs.reporter("resolvers","scripts")
+function resolvers.updatescript(oldname,newname) 
+  local scriptpath="scripts/context/lua"
+  newname=file.addsuffix(newname,"lua")
+  local oldscript=resolvers.cleanpath(oldname)
+  if trace_locating then
+    report_scripts("to be replaced old script %a",oldscript)
+  end
+  local newscripts=resolvers.findfiles(newname) or {}
+  if #newscripts==0 then
+    if trace_locating then
+      report_scripts("unable to locate new script")
+    end
+  else
+    for i=1,#newscripts do
+      local newscript=resolvers.cleanpath(newscripts[i])
+      if trace_locating then
+        report_scripts("checking new script %a",newscript)
+      end
+      if oldscript==newscript then
+        if trace_locating then
+          report_scripts("old and new script are the same")
+        end
+      elseif not find(newscript,scriptpath) then
+        if trace_locating then
+          report_scripts("new script should come from %a",scriptpath)
+        end
+      elseif not (find(oldscript,file.removesuffix(newname).."$") or find(oldscript,newname.."$")) then
+        if trace_locating then
+          report_scripts("invalid new script name")
+        end
+      else
+        local newdata=io.loaddata(newscript)
+        if newdata then
+          if trace_locating then
+            report_scripts("old script content replaced by new content")
+          end
+          io.savedata(oldscript,newdata)
+          break
+        elseif trace_locating then
+          report_scripts("unable to load new script")
+        end
+      end
+    end
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-tmf"] = package.loaded["data-tmf"] or true
+
+-- original size: 2600, stripped down to: 1627
+
+if not modules then modules={} end modules ['data-tmf']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local resolvers=resolvers
+local report_tds=logs.reporter("resolvers","tds")
+function resolvers.load_tree(tree,resolve)
+  if type(tree)=="string" and tree~="" then
+    local getenv,setenv=resolvers.getenv,resolvers.setenv
+    local texos="texmf-"..os.platform
+    local oldroot=environment.texroot
+    local newroot=file.collapsepath(tree)
+    local newtree=file.join(newroot,texos)
+    local newpath=file.join(newtree,"bin")
+    if not lfs.isdir(newtree) then
+      report_tds("no %a under tree %a",texos,tree)
+      os.exit()
+    end
+    if not lfs.isdir(newpath) then
+      report_tds("no '%s/bin' under tree %a",texos,tree)
+      os.exit()
+    end
+    local texmfos=newtree
+    environment.texroot=newroot
+    environment.texos=texos
+    environment.texmfos=texmfos
+    if resolve then
+      resolvers.luacnfspec=resolvers.resolve(resolvers.luacnfspec)
+    end
+    setenv('SELFAUTOPARENT',newroot)
+    setenv('SELFAUTODIR',newtree)
+    setenv('SELFAUTOLOC',newpath)
+    setenv('TEXROOT',newroot)
+    setenv('TEXOS',texos)
+    setenv('TEXMFOS',texmfos)
+    setenv('TEXMFCNF',resolvers.luacnfspec,true) 
+    setenv('PATH',newpath..io.pathseparator..getenv('PATH'))
+    report_tds("changing from root %a to %a",oldroot,newroot)
+    report_tds("prepending %a to PATH",newpath)
+    report_tds("setting TEXMFCNF to %a",resolvers.luacnfspec)
+    report_tds()
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["data-lst"] = package.loaded["data-lst"] or true
+
+-- original size: 2654, stripped down to: 2301
+
+if not modules then modules={} end modules ['data-lst']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local find,concat,upper,format=string.find,table.concat,string.upper,string.format
+local fastcopy,sortedpairs=table.fastcopy,table.sortedpairs
+resolvers.listers=resolvers.listers or {}
+local resolvers=resolvers
+local report_lists=logs.reporter("resolvers","lists")
+local function tabstr(str)
+  if type(str)=='table' then
+    return concat(str," | ")
+  else
+    return str
+  end
+end
+function resolvers.listers.variables(pattern)
+  local instance=resolvers.instance
+  local environment=instance.environment
+  local variables=instance.variables
+  local expansions=instance.expansions
+  local pattern=upper(pattern or "")
+  local configured={}
+  local order=instance.order
+  for i=1,#order do
+    for k,v in next,order[i] do
+      if v~=nil and configured[k]==nil then
+        configured[k]=v
+      end
+    end
+  end
+  local env=fastcopy(environment)
+  local var=fastcopy(variables)
+  local exp=fastcopy(expansions)
+  for key,value in sortedpairs(configured) do
+    if key~="" and (pattern=="" or find(upper(key),pattern)) then
+      report_lists(key)
+      report_lists("  env: %s",tabstr(rawget(environment,key))  or "unset")
+      report_lists("  var: %s",tabstr(configured[key])      or "unset")
+      report_lists("  exp: %s",tabstr(expansions[key])      or "unset")
+      report_lists("  res: %s",tabstr(resolvers.resolve(expansions[key])) or "unset")
+    end
+  end
+  instance.environment=fastcopy(env)
+  instance.variables=fastcopy(var)
+  instance.expansions=fastcopy(exp)
+end
+local report_resolved=logs.reporter("system","resolved")
+function resolvers.listers.configurations()
+  local configurations=resolvers.instance.specification
+  for i=1,#configurations do
+    report_resolved("file : %s",resolvers.resolve(configurations[i]))
+  end
+  report_resolved("")
+  local list=resolvers.expandedpathfromlist(resolvers.splitpath(resolvers.luacnfspec))
+  for i=1,#list do
+    local li=resolvers.resolve(list[i])
+    if lfs.isdir(li) then
+      report_resolved("path - %s",li)
+    else
+      report_resolved("path + %s",li)
+    end
+  end
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["util-lib"] = package.loaded["util-lib"] or true
+
+-- original size: 11549, stripped down to: 5905
+
+if not modules then modules={} end modules ['util-lib']={
+  version=1.001,
+  comment="companion to luat-lib.mkiv",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files",
+}
+local gsub,find=string.gsub,string.find
+local pathpart,nameonly,joinfile=file.pathpart,file.nameonly,file.join
+local findfile,findfiles=resolvers and resolvers.findfile,resolvers and resolvers.findfiles
+local loaded=package.loaded
+local report_swiglib=logs.reporter("swiglib")
+local trace_swiglib=false trackers.register("resolvers.swiglib",function(v) trace_swiglib=v end)
+local done=false
+local function requireswiglib(required,version)
+  local trace_swiglib=trace_swiglib or package.helpers.trace
+  local library=loaded[required]
+  if library==nil then
+    if trace_swiglib then
+      report_swiglib("requiring library %a with version %a",required,version or "any")
+    end
+    local required_full=gsub(required,"%.","/") 
+    local required_path=pathpart(required_full)
+    local required_base=nameonly(required_full)
+    local required_name=required_base.."."..os.libsuffix
+    local version=type(version)=="string" and version~="" and version or false
+    local engine=environment.ownmain or false
+    if trace_swiglib and not done then
+      local list=resolvers.expandedpathlistfromvariable("lib") 
+      for i=1,#list do
+        report_swiglib("tds path %i: %s",i,list[i])
+      end
+    end
+    local function found(locate,asked_library,how,...)
+      if trace_swiglib then
+        report_swiglib("checking %s: %a",how,asked_library)
+      end
+      return locate(asked_library,...)
+    end
+    local function check(locate,...)
+      local found=nil
+      if version then
+        local asked_library=joinfile(required_path,version,required_name)
+        if trace_swiglib then
+          report_swiglib("checking %s: %a","with version",asked_library)
+        end
+        found=locate(asked_library,...)
+      end
+      if not found or found=="" then
+        local asked_library=joinfile(required_path,required_name)
+        if trace_swiglib then
+          report_swiglib("checking %s: %a","with version",asked_library)
+        end
+        found=locate(asked_library,...)
+      end
+      return found and found~="" and found or false
+    end
+    local function attempt(checkpattern)
+      if trace_swiglib then
+        report_swiglib("checking tds lib paths strictly")
+      end
+      local found=findfile and check(findfile,"lib")
+      if found and (not checkpattern or find(found,checkpattern)) then
+        return found
+      end
+      if trace_swiglib then
+        report_swiglib("checking tds lib paths with wildcard")
+      end
+      local asked_library=joinfile(required_path,".*",required_name)
+      if trace_swiglib then
+        report_swiglib("checking %s: %a","latest version",asked_library)
+      end
+      local list=findfiles(asked_library,"lib",true)
+      if list and #list>0 then
+        table.sort(list)
+        local found=list[#list]
+        if found and (not checkpattern or find(found,checkpattern)) then
+          return found
+        end
+      end
+      if trace_swiglib then
+        report_swiglib("checking lib paths")
+      end
+      package.extralibpath(environment.ownpath)
+      local paths=package.libpaths()
+      for i=1,#paths do
+        local found=check(lfs.isfile)
+        if found and (not checkpattern or find(found,checkpattern)) then
+          return found
+        end
+      end
+      return false
+    end
+    local found_library=nil
+    if engine then
+      if trace_swiglib then
+        report_swiglib("attemp 1, engine %a",engine)
+      end
+      found_library=attempt("/"..engine.."/")
+      if not found_library then
+        if trace_swiglib then
+          report_swiglib("attemp 2, no engine",asked_library)
+        end
+        found_library=attempt()
+      end
+    else
+      found_library=attempt()
+    end
+    if not found_library then
+      if trace_swiglib then
+        report_swiglib("not found: %a",required)
+      end
+      library=false
+    else
+      local path=pathpart(found_library)
+      local base=nameonly(found_library)
+      dir.push(path)
+      if trace_swiglib then
+        report_swiglib("found: %a",found_library)
+      end
+      local message=nil
+      local opener="luaopen_"..required_base
+      library,message=package.loadlib(found_library,opener)
+      local libtype=type(library)
+      if libtype=="function" then
+        library=library()
+      else
+        report_swiglib("load error: %a returns %a, message %a, library %a",opener,libtype,(string.gsub(message or "no message","[%s]+$","")),found_library or "no library")
+        library=false
+      end
+      dir.pop()
+    end
+    if not library then
+      report_swiglib("unknown: %a",required)
+    elseif trace_swiglib then
+      report_swiglib("stored: %a",required)
+    end
+    loaded[required]=library
+  else
+    report_swiglib("reused: %a",required)
+  end
+  return library
+end
+local savedrequire=require
+function require(name,version)
+  if find(name,"^swiglib%.") then
+    return requireswiglib(name,version)
+  else
+    return savedrequire(name)
+  end
+end
+local swiglibs={}
+local initializer="core"
+function swiglib(name,version)
+  local library=swiglibs[name]
+  if not library then
+    statistics.starttiming(swiglibs)
+    if trace_swiglib then
+      report_swiglib("loading %a",name)
+    end
+    if not find(name,"%."..initializer.."$") then
+      fullname="swiglib."..name.."."..initializer
+    else
+      fullname="swiglib."..name
+    end
+    library=requireswiglib(fullname,version)
+    swiglibs[name]=library
+    statistics.stoptiming(swiglibs)
+  end
+  return library
+end
+statistics.register("used swiglibs",function()
+  if next(swiglibs) then
+    return string.format("%s, initial load time %s seconds",table.concat(table.sortedkeys(swiglibs)," "),statistics.elapsedtime(swiglibs))
+  end
+end)
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["luat-sta"] = package.loaded["luat-sta"] or true
+
+-- original size: 5703, stripped down to: 2507
+
+if not modules then modules={} end modules ['luat-sta']={
+  version=1.001,
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local gmatch,match=string.gmatch,string.match
+local type=type
+states=states or {}
+local states=states
+states.data=states.data or {}
+local data=states.data
+states.hash=states.hash or {}
+local hash=states.hash
+states.tag=states.tag   or ""
+states.filename=states.filename or ""
+function states.save(filename,tag)
+  tag=tag or states.tag
+  filename=file.addsuffix(filename or states.filename,'lus')
+  io.savedata(filename,
+    "-- generator : luat-sta.lua\n".."-- state tag : "..tag.."\n\n"..table.serialize(data[tag or states.tag] or {},true)
+  )
+end
+function states.load(filename,tag)
+  states.filename=filename
+  states.tag=tag or "whatever"
+  states.filename=file.addsuffix(states.filename,'lus')
+  data[states.tag],hash[states.tag]=(io.exists(filename) and dofile(filename)) or {},{}
+end
+local function set_by_tag(tag,key,value,default,persistent)
+  local d,h=data[tag],hash[tag]
+  if d then
+    if type(d)=="table" then
+      local dkey,hkey=key,key
+      local pre,post=match(key,"(.+)%.([^%.]+)$")
+      if pre and post then
+        for k in gmatch(pre,"[^%.]+") do
+          local dk=d[k]
+          if not dk then
+            dk={}
+            d[k]=dk
+          elseif type(dk)=="string" then
+            break
+          end
+          d=dk
+        end
+        dkey,hkey=post,key
+      end
+      if value==nil then
+        value=default
+      elseif value==false then
+      elseif persistent then
+        value=value or d[dkey] or default
+      else
+        value=value or default
+      end
+      d[dkey],h[hkey]=value,value
+    elseif type(d)=="string" then
+      data[tag],hash[tag]=value,value
+    end
+  end
+end
+local function get_by_tag(tag,key,default)
+  local h=hash[tag]
+  if h and h[key] then
+    return h[key]
+  else
+    local d=data[tag]
+    if d then
+      for k in gmatch(key,"[^%.]+") do
+        local dk=d[k]
+        if dk~=nil then
+          d=dk
+        else
+          return default
+        end
+      end
+      if d==false then
+        return false
+      else
+        return d or default
+      end
+    end
+  end
+end
+states.set_by_tag=set_by_tag
+states.get_by_tag=get_by_tag
+function states.set(key,value,default,persistent)
+  set_by_tag(states.tag,key,value,default,persistent)
+end
+function states.get(key,default)
+  return get_by_tag(states.tag,key,default)
+end
+
+
+end -- of closure
+
+do -- create closure to overcome 200 locals limit
+
+package.loaded["luat-fmt"] = package.loaded["luat-fmt"] or true
+
+-- original size: 5951, stripped down to: 4922
+
+if not modules then modules={} end modules ['luat-fmt']={
+  version=1.001,
+  comment="companion to mtxrun",
+  author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
+  copyright="PRAGMA ADE / ConTeXt Development Team",
+  license="see context related readme files"
+}
+local format=string.format
+local concat=table.concat
+local quoted=string.quoted
+local luasuffixes=utilities.lua.suffixes
+local report_format=logs.reporter("resolvers","formats")
+local function primaryflags() 
+  local trackers=environment.argument("trackers")
+  local directives=environment.argument("directives")
+  local flags={}
+  if trackers and trackers~="" then
+    flags={ "--trackers="..quoted(trackers) }
+  end
+  if directives and directives~="" then
+    flags={ "--directives="..quoted(directives) }
+  end
+  if environment.argument("jit") then
+    flags={ "--jiton" }
+  end
+  return concat(flags," ")
+end
+function environment.make_format(name)
+  local engine=environment.ownmain or "luatex"
+  local olddir=dir.current()
+  local path=caches.getwritablepath("formats",engine) or "" 
+  if path~="" then
+    lfs.chdir(path)
+  end
+  report_format("using format path %a",dir.current())
+  local texsourcename=file.addsuffix(name,"mkiv")
+  local fulltexsourcename=resolvers.findfile(texsourcename,"tex") or ""
+  if fulltexsourcename=="" then
+    texsourcename=file.addsuffix(name,"tex")
+    fulltexsourcename=resolvers.findfile(texsourcename,"tex") or ""
+  end
+  if fulltexsourcename=="" then
+    report_format("no tex source file with name %a (mkiv or tex)",name)
+    lfs.chdir(olddir)
+    return
+  else
+    report_format("using tex source file %a",fulltexsourcename)
+  end
+  local texsourcepath=dir.expandname(file.dirname(fulltexsourcename))
+  local specificationname=file.replacesuffix(fulltexsourcename,"lus")
+  local fullspecificationname=resolvers.findfile(specificationname,"tex") or ""
+  if fullspecificationname=="" then
+    specificationname=file.join(texsourcepath,"context.lus")
+    fullspecificationname=resolvers.findfile(specificationname,"tex") or ""
+  end
+  if fullspecificationname=="" then
+    report_format("unknown stub specification %a",specificationname)
+    lfs.chdir(olddir)
+    return
+  end
+  local specificationpath=file.dirname(fullspecificationname)
+  local usedluastub=nil
+  local usedlualibs=dofile(fullspecificationname)
+  if type(usedlualibs)=="string" then
+    usedluastub=file.join(file.dirname(fullspecificationname),usedlualibs)
+  elseif type(usedlualibs)=="table" then
+    report_format("using stub specification %a",fullspecificationname)
+    local texbasename=file.basename(name)
+    local luastubname=file.addsuffix(texbasename,luasuffixes.lua)
+    local lucstubname=file.addsuffix(texbasename,luasuffixes.luc)
+    report_format("creating initialization file %a",luastubname)
+    utilities.merger.selfcreate(usedlualibs,specificationpath,luastubname)
+    if utilities.lua.compile(luastubname,lucstubname) and lfs.isfile(lucstubname) then
+      report_format("using compiled initialization file %a",lucstubname)
+      usedluastub=lucstubname
+    else
+      report_format("using uncompiled initialization file %a",luastubname)
+      usedluastub=luastubname
+    end
+  else
+    report_format("invalid stub specification %a",fullspecificationname)
+    lfs.chdir(olddir)
+    return
+  end
+  local command=format("%s --ini %s --lua=%s %s %sdump",engine,primaryflags(),quoted(usedluastub),quoted(fulltexsourcename),os.platform=="unix" and "\\\\" or "\\")
+  report_format("running command: %s\n",command)
+  os.spawn(command)
+  local pattern=file.removesuffix(file.basename(usedluastub)).."-*.mem"
+  local mp=dir.glob(pattern)
+  if mp then
+    for i=1,#mp do
+      local name=mp[i]
+      report_format("removing related mplib format %a",file.basename(name))
+      os.remove(name)
+    end
+  end
+  lfs.chdir(olddir)
+end
+function environment.run_format(name,data,more)
+  if name and name~="" then
+    local engine=environment.ownmain or "luatex"
+    local barename=file.removesuffix(name)
+    local fmtname=caches.getfirstreadablefile(file.addsuffix(barename,"fmt"),"formats",engine)
+    if fmtname=="" then
+      fmtname=resolvers.findfile(file.addsuffix(barename,"fmt")) or ""
+    end
+    fmtname=resolvers.cleanpath(fmtname)
+    if fmtname=="" then
+      report_format("no format with name %a",name)
+    else
+      local barename=file.removesuffix(name) 
+      local luaname=file.addsuffix(barename,"luc")
+      if not lfs.isfile(luaname) then
+        luaname=file.addsuffix(barename,"lua")
+      end
+      if not lfs.isfile(luaname) then
+        report_format("using format name %a",fmtname)
+        report_format("no luc/lua file with name %a",barename)
+      else
+        local command=format("%s %s --fmt=%s --lua=%s %s %s",engine,primaryflags(),quoted(barename),quoted(luaname),quoted(data),more~="" and quoted(more) or "")
+        report_format("running command: %s",command)
+        os.spawn(command)
+      end
+    end
+  end
+end
+
+
+end -- of closure
+
+-- used libraries    : l-lua.lua l-package.lua l-lpeg.lua l-function.lua l-string.lua l-table.lua l-io.lua l-number.lua l-set.lua l-os.lua l-file.lua l-gzip.lua l-md5.lua l-url.lua l-dir.lua l-boolean.lua l-unicode.lua l-math.lua util-str.lua util-tab.lua util-sto.lua util-prs.lua util-fmt.lua trac-set.lua trac-log.lua trac-inf.lua trac-pro.lua util-lua.lua util-deb.lua util-mrg.lua util-tpl.lua util-env.lua luat-env.lua lxml-tab.lua lxml-lpt.lua lxml-mis.lua lxml-aux.lua lxml-xml.lua trac-xml.lua data-ini.lua data-exp.lua data-env.lua data-tmp.lua data-met.lua data-res.lua data-pre.lua data-inp.lua data-out.lua data-fil.lua data-con.lua data-use.lua data-zip.lua data-tre.lua data-sch.lua data-lua.lua data-aux.lua data-tmf.lua data-lst.lua util-lib.lua luat-sta.lua luat-fmt.lua
+-- skipped libraries : -
+-- original bytes    : 687882
+-- stripped bytes    : 244794
+
+-- end library merge
+
+-- We need this hack till luatex is fixed.
+--
+-- for k,v in pairs(arg) do print(k,v) end
+
+if arg and (arg[0] == 'luatex' or arg[0] == 'luatex.exe') and arg[1] == "--luaonly" then
+    arg[-1]=arg[0] arg[0]=arg[2] for k=3,#arg do arg[k-2]=arg[k] end arg[#arg]=nil arg[#arg]=nil
+end
+
+-- End of hack.
+
+local format, gsub, gmatch, match, find = string.format, string.gsub, string.gmatch, string.match, string.find
+local concat = table.concat
+
+local ownname = environment and environment.ownname or arg[0] or 'mtxrun.lua'
+local ownpath = gsub(match(ownname,"^(.+)[\\/].-$") or ".","\\","/")
+local owntree = environment and environment.ownpath or ownpath
+
+local ownlibs = { -- order can be made better
+
+    'l-lua.lua',
+    'l-package.lua',
+    'l-lpeg.lua',
+    'l-function.lua',
+    'l-string.lua',
+    'l-table.lua',
+    'l-io.lua',
+    'l-number.lua',
+    'l-set.lua',
+    'l-os.lua',
+    'l-file.lua',
+    'l-gzip.lua',
+    'l-md5.lua',
+    'l-url.lua',
+    'l-dir.lua',
+    'l-boolean.lua',
+    'l-unicode.lua',
+    'l-math.lua',
+
+    'util-str.lua', -- code might move to l-string
+    'util-tab.lua',
+    'util-sto.lua',
+    'util-prs.lua',
+    'util-fmt.lua',
+
+    'trac-set.lua',
+    'trac-log.lua',
+    'trac-inf.lua', -- was before trac-set
+    'trac-pro.lua', -- not really needed
+    'util-lua.lua', -- indeed here?
+    'util-deb.lua',
+
+    'util-mrg.lua',
+    'util-tpl.lua',
+
+    'util-env.lua',
+    'luat-env.lua', -- can come before inf (as in mkiv)
+
+    'lxml-tab.lua',
+    'lxml-lpt.lua',
+ -- 'lxml-ent.lua',
+    'lxml-mis.lua',
+    'lxml-aux.lua',
+    'lxml-xml.lua',
+
+    'trac-xml.lua',
+
+    'data-ini.lua',
+    'data-exp.lua',
+    'data-env.lua',
+    'data-tmp.lua',
+    'data-met.lua',
+    'data-res.lua',
+    'data-pre.lua',
+    'data-inp.lua',
+    'data-out.lua',
+    'data-fil.lua',
+    'data-con.lua',
+    'data-use.lua',
+--  'data-tex.lua',
+--  'data-bin.lua',
+    'data-zip.lua',
+    'data-tre.lua',
+    'data-sch.lua',
+    'data-lua.lua',
+    'data-aux.lua', -- updater
+    'data-tmf.lua',
+    'data-lst.lua',
+
+    'util-lib.lua', -- swiglib
+
+    'luat-sta.lua',
+    'luat-fmt.lua',
+
+}
+
+-- c:/data/develop/tex-context/tex/texmf-win64/bin/../../texmf-context/tex/context/base/data-tmf.lua
+-- c:/data/develop/context/sources/data-tmf.lua
+
+local ownlist = {
+ -- '.',
+ -- ownpath ,
+    owntree .. "/../../../../context/sources", -- HH's development path
+    owntree .. "/../../texmf-local/tex/context/base",
+    owntree .. "/../../texmf-context/tex/context/base",
+    owntree .. "/../../texmf/tex/context/base",
+    owntree .. "/../../../texmf-local/tex/context/base",
+    owntree .. "/../../../texmf-context/tex/context/base",
+    owntree .. "/../../../texmf/tex/context/base",
+}
+
+if ownpath == "." then table.remove(ownlist,1) end
+
+own = {
+    name = ownname,
+    path = ownpath,
+    tree = owntree,
+    list = ownlist,
+    libs = ownlibs,
+}
+
+local function locate_libs()
+    for l=1,#ownlibs do
+        local lib = ownlibs[l]
+        for p =1,#ownlist do
+            local pth = ownlist[p]
+            local filename = pth .. "/" .. lib
+            local found = lfs.isfile(filename)
+            if found then
+                package.path = package.path .. ";" .. pth .. "/?.lua" -- in case l-* does a require
+                return pth
+            end
+        end
+    end
+end
+
+local function load_libs()
+    local found = locate_libs()
+    if found then
+        for l=1,#ownlibs do
+            local filename = found .. "/" .. ownlibs[l]
+            local codeblob = loadfile(filename)
+            if codeblob then
+                codeblob()
+            end
+        end
+    else
+        resolvers = nil
+    end
+end
+
+if not resolvers then
+    load_libs()
+end
+
+if not resolvers then
+    print("")
+    print("Mtxrun is unable to start up due to lack of libraries. You may")
+    print("try to run 'lua mtxrun.lua --selfmerge' in the path where this")
+    print("script is located (normally under ..../scripts/context/lua) which")
+    print("will make this script library independent.")
+    os.exit()
+end
+
+-- verbosity
+
+----- e_verbose = environment.arguments["verbose"]
+
+local e_verbose = false
+
+-- some common flags (also passed through environment)
+
+local e_silent       = environment.argument("silent")
+local e_noconsole    = environment.argument("noconsole")
+
+local e_trackers     = environment.argument("trackers")
+local e_directives   = environment.argument("directives")
+local e_experiments  = environment.argument("experiments")
+
+if e_silent == true then
+    e_silent = "*"
+end
+
+if type(e_silent) == "string" then
+    if type(e_directives) == "string" then
+        e_directives = format("%s,logs.blocked={%s}",e_directives,e_silent)
+    else
+        e_directives = format("logs.blocked={%s}",e_silent)
+    end
+end
+
+if e_noconsole then
+    if type(e_directives) == "string" then
+        e_directives = format("%s,logs.target=file",e_directives)
+    else
+        e_directives = format("logs.target=file")
+    end
+end
+
+if e_trackers    then trackers   .enable(e_trackers)    end
+if e_directives  then directives .enable(e_directives)  end
+if e_experiments then experiments.enable(e_experiments) end
+
+if not environment.trackers    then environment.trackers    = e_trackers    end
+if not environment.directives  then environment.directives  = e_directives  end
+if not environment.experiments then environment.experiments = e_experiments end
+
+--
+
+local instance = resolvers.reset()
+
+local helpinfo = [[
+<?xml version="1.0" ?>
+<application>
+ <metadata>
+  <entry name="name">mtxrun</entry>
+  <entry name="detail">ConTeXt TDS Runner Tool</entry>
+  <entry name="version">1.31</entry>
+ </metadata>
+ <flags>
+  <category name="basic">
+   <subcategory>
+    <flag name="script"><short>run an mtx script (lua prefered method) (<ref name="noquotes"/>), no script gives list</short></flag>
+    <flag name="execute"><short>run a script or program (texmfstart method) (<ref name="noquotes"/>)</short></flag>
+    <flag name="resolve"><short>resolve prefixed arguments</short></flag>
+    <flag name="ctxlua"><short>run internally (using preloaded libs)</short></flag>
+    <flag name="internal"><short>run script using built in libraries (same as <ref name="ctxlua"/>)</short></flag>
+    <flag name="locate"><short>locate given filename in database (default) or system (<ref name="first"/> <ref name="all"/> <ref name="detail"/>)</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="autotree"><short>use texmf tree cf. env texmfstart_tree or texmfstarttree</short></flag>
+    <flag name="tree" value="pathtotree"><short>use given texmf tree (default file: setuptex.tmf)</short></flag>
+    <flag name="environment" value="name"><short>use given (tmf) environment file</short></flag>
+    <flag name="path" value="runpath"><short>go to given path before execution</short></flag>
+    <flag name="ifchanged" value="filename"><short>only execute when given file has changed (md checksum)</short></flag>
+    <flag name="iftouched" value="old,new"><short>only execute when given file has changed (time stamp)</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="makestubs"><short>create stubs for (context related) scripts</short></flag>
+    <flag name="removestubs"><short>remove stubs (context related) scripts</short></flag>
+    <flag name="stubpath" value="binpath"><short>paths where stubs wil be written</short></flag>
+    <flag name="windows"><short>create windows (mswin) stubs</short></flag>
+    <flag name="unix"><short>create unix (linux) stubs</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="verbose"><short>give a bit more info</short></flag>
+    <flag name="trackers" value="list"><short>enable given trackers</short></flag>
+    <flag name="progname" value="str"><short>format or backend</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="edit"><short>launch editor with found file</short></flag>
+    <flag name="launch"><short>launch files like manuals, assumes os support (<ref name="all"/>)</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="timedrun"><short>run a script and time its run</short></flag>
+    <flag name="autogenerate"><short>regenerate databases if needed (handy when used to run context in an editor)</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="usekpse"><short>use kpse as fallback (when no mkiv and cache installed, often slower)</short></flag>
+    <flag name="forcekpse"><short>force using kpse (handy when no mkiv and cache installed but less functionality)</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="prefixes"><short>show supported prefixes</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="generate"><short>generate file database</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="variables"><short>show configuration variables</short></flag>
+    <flag name="configurations"><short>show configuration order</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="directives"><short>show (known) directives</short></flag>
+    <flag name="trackers"><short>show (known) trackers</short></flag>
+    <flag name="experiments"><short>show (known) experiments</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="expand-braces"><short>expand complex variable</short></flag>
+    <flag name="expand-path"><short>expand variable (resolve paths)</short></flag>
+    <flag name="expand-var"><short>expand variable (resolve references)</short></flag>
+    <flag name="show-path"><short>show path expansion of ...</short></flag>
+    <flag name="var-value"><short>report value of variable</short></flag>
+    <flag name="find-file"><short>report file location</short></flag>
+    <flag name="find-path"><short>report path of file</short></flag>
+   </subcategory>
+   <subcategory>
+    <flag name="pattern" value="string"><short>filter variables</short></flag>
+   </subcategory>
+  </category>
+ </flags>
+</application>
+]]
+
+local application = logs.application {
+    name     = "mtxrun",
+    banner   = "ConTeXt TDS Runner Tool 1.31",
+    helpinfo = helpinfo,
+}
+
+local report = application.report
+
+messages = messages or { } -- for the moment
+
+runners = runners  or { } -- global (might become local)
+
+runners.applications = {
+    ["lua"] = "luatex --luaonly",
+    ["luc"] = "luatex --luaonly",
+    ["pl"] = "perl",
+    ["py"] = "python",
+    ["rb"] = "ruby",
+}
+
+runners.suffixes = {
+    'rb', 'lua', 'py', 'pl'
+}
+
+runners.registered = {
+    texexec      = { 'texexec.rb',      false },  -- context mkii runner (only tool not to be luafied)
+    texutil      = { 'texutil.rb',      true  },  -- old perl based index sorter for mkii (old versions need it)
+    texfont      = { 'texfont.pl',      true  },  -- perl script that makes mkii font metric files
+    texfind      = { 'texfind.pl',      false },  -- perltk based tex searching tool, mostly used at pragma
+    texshow      = { 'texshow.pl',      false },  -- perltk based context help system, will be luafied
+ -- texwork      = { 'texwork.pl',      false },  -- perltk based editing environment, only used at pragma
+    makempy      = { 'makempy.pl',      true  },
+    mptopdf      = { 'mptopdf.pl',      true  },
+    pstopdf      = { 'pstopdf.rb',      true  },  -- converts ps (and some more) images, does some cleaning (replaced)
+ -- examplex     = { 'examplex.rb',     false },
+    concheck     = { 'concheck.rb',     false },
+    runtools     = { 'runtools.rb',     true  },
+    textools     = { 'textools.rb',     true  },
+    tmftools     = { 'tmftools.rb',     true  },
+    ctxtools     = { 'ctxtools.rb',     true  },
+    rlxtools     = { 'rlxtools.rb',     true  },
+    pdftools     = { 'pdftools.rb',     true  },
+    mpstools     = { 'mpstools.rb',     true  },
+ -- exatools     = { 'exatools.rb',     true  },
+    xmltools     = { 'xmltools.rb',     true  },
+ -- luatools     = { 'luatools.lua',    true  },
+    mtxtools     = { 'mtxtools.rb',     true  },
+    pdftrimwhite = { 'pdftrimwhite.pl', false },
+}
+
+runners.launchers = {
+    windows = { },
+    unix    = { },
+}
+
+-- like runners.libpath("framework"): looks on script's subpath
+
+function runners.libpath(...)
+    package.prepend_libpath(file.dirname(environment.ownscript),...)
+    package.prepend_libpath(file.dirname(environment.ownname)  ,...)
+end
+
+function runners.prepare()
+    local checkname = environment.argument("ifchanged")
+    if type(checkname) == "string" and checkname ~= "" then
+        local oldchecksum = file.loadchecksum(checkname)
+        local newchecksum = file.checksum(checkname)
+        if oldchecksum == newchecksum then
+            if e_verbose then
+                report("file '%s' is unchanged",checkname)
+            end
+            return "skip"
+        elseif e_verbose then
+            report("file '%s' is changed, processing started",checkname)
+        end
+        file.savechecksum(checkname)
+    end
+    local touchname = environment.argument("iftouched")
+    if type(touchname) == "string" and touchname ~= "" then
+        local oldname, newname = string.splitup(touchname, ",")
+        if oldname and newname and oldname ~= "" and newname ~= "" then
+            if not file.needs_updating(oldname,newname) then
+                if e_verbose then
+                    report("file '%s' and '%s' have same age",oldname,newname)
+                end
+                return "skip"
+            elseif e_verbose then
+                report("file '%s' is older than '%s'",oldname,newname)
+            end
+        end
+    end
+    local runpath = environment.argument("path")
+    if type(runpath) == "string" and not lfs.chdir(runpath) then
+        report("unable to change to path '%s'",runpath)
+        return "error"
+    end
+    runners.prepare = function() end
+    return "run"
+end
+
+function runners.execute_script(fullname,internal,nosplit)
+    local noquote = environment.argument("noquotes")
+    if fullname and fullname ~= "" then
+        local state = runners.prepare()
+        if state == 'error' then
+            return false
+        elseif state == 'skip' then
+            return true
+        elseif state == "run" then
+            local path, name, suffix = file.splitname(fullname)
+            local result = ""
+            if path ~= "" then
+                result = fullname
+            elseif name then
+                name = gsub(name,"^int[%a]*:",function()
+                    internal = true
+                    return ""
+                end )
+                name = gsub(name,"^script:","")
+                if suffix == "" and runners.registered[name] and runners.registered[name][1] then
+                    name = runners.registered[name][1]
+                    suffix = file.suffix(name)
+                end
+                if suffix == "" then
+                    -- loop over known suffixes
+                    for _,s in pairs(runners.suffixes) do
+                        result = resolvers.findfile(name .. "." .. s, 'texmfscripts')
+                        if result ~= "" then
+                            break
+                        end
+                    end
+                elseif runners.applications[suffix] then
+                    result = resolvers.findfile(name, 'texmfscripts')
+                else
+                    -- maybe look on path
+                    result = resolvers.findfile(name, 'other text files')
+                end
+            end
+            if result and result ~= "" then
+                if not no_split then
+                    local before, after = environment.splitarguments(fullname) -- already done
+                    environment.arguments_before, environment.arguments_after = before, after
+                end
+                if internal then
+                    arg = { } for _,v in pairs(environment.arguments_after) do arg[#arg+1] = v end
+                    environment.ownscript = result
+                    dofile(result)
+                else
+local texmfcnf =  resolvers.getenv("TEXMFCNF")
+if not texmfcnf or texmfcnf == "" then
+    texmfcnf = resolvers.expandedpathfromlist(resolvers.splitpath(resolvers.resolve(resolvers.luacnfspec)))
+    resolvers.setenv("TEXMFCNF",table.concat(texmfcnf,";")) -- for running texexec etc (after tl change to texmf-dist)
+end
+                    local binary = runners.applications[file.suffix(result)]
+                    result = string.quoted(string.unquoted(result))
+                 -- if string.match(result,' ') and not string.match(result,"^\".*\"$") then
+                 --     result = '"' .. result .. '"'
+                 -- end
+                    if binary and binary ~= "" then
+                        result = binary .. " " .. result
+                    end
+                    local command = result .. " " .. environment.reconstructcommandline(environment.arguments_after,noquote)
+                    if e_verbose then
+                        report()
+                        report("executing: %s",command)
+                        report()
+                        report()
+                        io.flush()
+                    end
+                    -- no os.exec because otherwise we get the wrong return value
+                    local code = os.execute(command) -- maybe spawn
+                    if code == 0 then
+                        return true
+                    else
+                        if binary then
+                            binary = file.addsuffix(binary,os.binsuffix)
+                            for p in gmatch(os.getenv("PATH"),"[^"..io.pathseparator.."]+") do
+                                if lfs.isfile(file.join(p,binary)) then
+                                    return false
+                                end
+                            end
+                            report()
+                            report("This script needs '%s' which seems not to be installed.",binary)
+                            report()
+                        end
+                        return false
+                    end
+                end
+            end
+        end
+    end
+    return false
+end
+
+function runners.execute_program(fullname)
+    local noquote = environment.argument("noquotes")
+    if fullname and fullname ~= "" then
+        local state = runners.prepare()
+        if state == 'error' then
+            return false
+        elseif state == 'skip' then
+            return true
+        elseif state == "run" then
+            local before, after = environment.splitarguments(fullname)
+            for k=1,#after do after[k] = resolvers.resolve(after[k]) end
+            environment.initializearguments(after)
+            fullname = gsub(fullname,"^bin:","")
+            local command = fullname .. " " .. (environment.reconstructcommandline(after or "",noquote) or "")
+            report()
+            report("executing: %s",command)
+            report()
+            report()
+            io.flush()
+            local code = os.exec(command) -- (fullname,unpack(after)) does not work / maybe spawn
+            return code == 0
+        end
+    end
+    return false
+end
+
+-- the --usekpse flag will fallback (not default) on kpse (hm, we can better update mtx-stubs)
+
+local windows_stub = '@echo off\013\010setlocal\013\010set ownpath=%%~dp0%%\013\010texlua "%%ownpath%%mtxrun.lua" --usekpse --execute %s %%*\013\010endlocal\013\010'
+local unix_stub    = '#!/bin/sh\010mtxrun --usekpse --execute %s \"$@\"\010'
+
+function runners.handle_stubs(create)
+    local stubpath = environment.argument('stubpath') or '.' -- 'auto' no longer subpathssupported
+    local windows  = environment.argument('windows') or environment.argument('mswin') or false
+    local unix     = environment.argument('unix') or environment.argument('linux') or false
+    if not windows and not unix then
+        if os.platform == "unix" then
+            unix = true
+        else
+            windows = true
+        end
+    end
+    for _,v in pairs(runners.registered) do
+        local name, doit = v[1], v[2]
+        if doit then
+            local base = gsub(file.basename(name), "%.(.-)$", "")
+            if create then
+                if windows then
+                    io.savedata(file.join(stubpath,base..".bat"),format(windows_stub,name))
+                    report("windows stub for '%s' created",base)
+                end
+                if unix then
+                    io.savedata(file.join(stubpath,base),format(unix_stub,name))
+                    report("unix stub for '%s' created",base)
+                end
+            else
+                if windows and (os.remove(file.join(stubpath,base..'.bat')) or os.remove(file.join(stubpath,base..'.cmd'))) then
+                    report("windows stub for '%s' removed", base)
+                end
+                if unix and (os.remove(file.join(stubpath,base)) or os.remove(file.join(stubpath,base..'.sh'))) then
+                    report("unix stub for '%s' removed",base)
+                end
+            end
+        end
+    end
+end
+
+function runners.resolve_string(filename)
+    if filename and filename ~= "" then
+        runners.report_location(resolvers.resolve(filename))
+    end
+end
+
+-- differs from texmfstart where locate appends .com .exe .bat ... todo
+
+function runners.locate_file(filename) -- was given file but only searches in tree
+    if filename and filename ~= "" then
+        if environment.argument("first") then
+            runners.report_location(resolvers.findfile(filename))
+         -- resolvers.dowithfilesandreport(resolvers.findfile,filename)
+        elseif environment.argument("all") then
+            local result, status = resolvers.findfiles(filename)
+            if status and environment.argument("detail") then
+                runners.report_location(status)
+            else
+                runners.report_location(result)
+            end
+        else
+            runners.report_location(resolvers.findgivenfile(filename))
+         -- resolvers.dowithfilesandreport(resolvers.findgivenfile,filename)
+        end
+    end
+end
+
+function runners.locate_platform()
+    runners.report_location(os.platform)
+end
+
+function runners.report_location(result)
+    if type(result) == "table" then
+        for i=1,#result do
+            if i > 1 then
+                io.write("\n")
+            end
+            io.write(result[i])
+        end
+    else
+        io.write(result)
+    end
+end
+
+function runners.edit_script(filename) -- we assume that gvim is present on most systems (todo: also in cnf file)
+    local editor = os.getenv("MTXRUN_EDITOR") or os.getenv("TEXMFSTART_EDITOR") or os.getenv("EDITOR") or 'gvim'
+    local rest = resolvers.resolve(filename)
+    if rest ~= "" then
+        local command = editor .. " " .. rest
+        if e_verbose then
+            report()
+            report("starting editor: %s",command)
+            report()
+            report()
+        end
+        os.launch(command)
+    end
+end
+
+function runners.save_script_session(filename, list)
+    local t = { }
+    for i=1,#list do
+        local key = list[i]
+        t[key] = environment.arguments[key]
+    end
+    io.savedata(filename,table.serialize(t,true))
+end
+
+function runners.load_script_session(filename)
+    if lfs.isfile(filename) then
+        local t = io.loaddata(filename)
+        if t then
+            t = loadstring(t)
+            if t then t = t() end
+            for key, value in pairs(t) do
+                environment.arguments[key] = value
+            end
+        end
+    end
+end
+
+function resolvers.launch(str)
+    -- maybe we also need to test on mtxrun.launcher.suffix environment
+    -- variable or on windows consult the assoc and ftype vars and such
+    local launchers = runners.launchers[os.platform] if launchers then
+        local suffix = file.suffix(str) if suffix then
+            local runner = launchers[suffix] if runner then
+                str = runner .. " " .. str
+            end
+        end
+    end
+    os.launch(str)
+end
+
+function runners.launch_file(filename)
+    trackers.enable("resolvers.locating")
+    local allresults = environment.arguments["all"]
+    local pattern = environment.arguments["pattern"]
+    if not pattern or pattern == "" then
+        pattern = filename
+    end
+    if not pattern or pattern == "" then
+        report("provide name or --pattern=")
+    else
+        local t = resolvers.findfiles(pattern,nil,allresults)
+        if not t or #t == 0 then
+            t = resolvers.findfiles("*/" .. pattern,nil,allresults)
+        end
+        if not t or #t == 0 then
+            t = resolvers.findfiles("*/" .. pattern .. "*",nil,allresults)
+        end
+        if t and #t > 0 then
+            if allresults then
+                for _, v in pairs(t) do
+                    report("launching %s", v)
+                    resolvers.launch(v)
+                end
+            else
+                report("launching %s", t[1])
+                resolvers.launch(t[1])
+            end
+        else
+            report("no match for %s", pattern)
+        end
+    end
+end
+
+local mtxprefixes = {
+    { "^mtx%-",    "mtx-"  },
+    { "^mtx%-t%-", "mtx-t-" },
+}
+
+function runners.find_mtx_script(filename)
+    local function found(name)
+        local path = file.dirname(name)
+        if path and path ~= "" then
+            return false
+        else
+            local fullname = own and own.path and file.join(own.path,name)
+            return io.exists(fullname) and fullname
+        end
+    end
+    filename = file.addsuffix(filename,"lua")
+    local basename = file.removesuffix(file.basename(filename))
+    local suffix = file.suffix(filename)
+    -- qualified path, raw name
+    local fullname = file.is_qualified_path(filename) and io.exists(filename) and filename
+    if fullname and fullname ~= "" then
+        return fullname
+    end
+    -- current path, raw name
+    fullname = "./" .. filename
+    fullname = io.exists(fullname) and fullname
+    if fullname and fullname ~= "" then
+        return fullname
+    end
+    -- mtx- prefix checking
+    for i=1,#mtxprefixes do
+        local mtxprefix = mtxprefixes[i]
+        mtxprefix = find(filename,mtxprefix[1]) and "" or mtxprefix[2]
+        -- context namespace, mtx-<filename>
+        fullname = mtxprefix .. filename
+        fullname = found(fullname) or resolvers.findfile(fullname)
+        if fullname and fullname ~= "" then
+            return fullname
+        end
+        -- context namespace, mtx-<filename>s
+        fullname = mtxprefix .. basename .. "s" .. "." .. suffix
+        fullname = found(fullname) or resolvers.findfile(fullname)
+        if fullname and fullname ~= "" then
+            return fullname
+        end
+        -- context namespace, mtx-<filename minus trailing s>
+        fullname = mtxprefix .. gsub(basename,"s$","") .. "." .. suffix
+        fullname = found(fullname) or resolvers.findfile(fullname)
+        if fullname and fullname ~= "" then
+            return fullname
+        end
+    end
+    -- context namespace, just <filename>
+    fullname = resolvers.findfile(filename)
+    return fullname
+end
+
+function runners.register_arguments(...)
+    local arguments = environment.arguments_after
+    local passedon = { ... }
+    for i=#passedon,1,-1 do
+        local pi = passedon[i]
+        if pi then
+            table.insert(arguments,1,pi)
+        end
+    end
+end
+
+function runners.execute_ctx_script(filename,...)
+    runners.register_arguments(...)
+    local arguments = environment.arguments_after
+    local fullname = runners.find_mtx_script(filename) or ""
+    if file.suffix(fullname) == "cld" then
+        -- handy in editors where we force --autopdf
+        report("running cld script: %s",filename)
+        table.insert(arguments,1,fullname)
+        table.insert(arguments,"--autopdf")
+        fullname = runners.find_mtx_script("context") or ""
+    end
+    -- retry after generate but only if --autogenerate
+    if fullname == "" and environment.argument("autogenerate") then -- might become the default
+        instance.renewcache = true
+        trackers.enable("resolvers.locating")
+        resolvers.load()
+        --
+        fullname = runners.find_mtx_script(filename) or ""
+    end
+    -- that should do it
+    if fullname ~= "" then
+        local state = runners.prepare()
+        if state == 'error' then
+            return false
+        elseif state == 'skip' then
+            return true
+        elseif state == "run" then
+            -- load and save ... kind of undocumented
+            arg = { } for _,v in pairs(arguments) do arg[#arg+1] = resolvers.resolve(v) end
+            environment.initializearguments(arg)
+            local loadname = environment.arguments['load']
+            if loadname then
+                if type(loadname) ~= "string" then loadname = file.basename(fullname) end
+                loadname = file.replacesuffix(loadname,"cfg")
+                runners.load_script_session(loadname)
+            end
+            filename = environment.files[1]
+            if e_verbose then
+                report("using script: %s\n",fullname)
+            end
+            environment.ownscript = fullname
+            dofile(fullname)
+            local savename = environment.arguments['save']
+            if savename then
+                local save_list = runners.save_list
+                if save_list and next(save_list) then
+                    if type(savename) ~= "string" then savename = file.basename(fullname) end
+                    savename = file.replacesuffix(savename,"cfg")
+                    runners.save_script_session(savename,save_list)
+                end
+            end
+            return true
+        end
+    else
+        if filename == "" or filename == "help" then
+            local context = resolvers.findfile("mtx-context.lua")
+            trackers.enable("resolvers.locating")
+            if context ~= "" then
+                local result = dir.glob((gsub(context,"mtx%-context","mtx-*"))) -- () needed
+                local valid = { }
+                table.sort(result)
+                for i=1,#result do
+                    local scriptname = result[i]
+                    local scriptbase = match(scriptname,".*mtx%-([^%-]-)%.lua")
+                    if scriptbase then
+                        local data = io.loaddata(scriptname)
+local application = match(data,"local application.-=.-(%{.-%})")
+if application then
+    application = loadstring("return " .. application)
+    if application then
+        application = application()
+        local banner = application.banner
+        if banner then
+            local description, version = match(banner,"^(.-) ([%d.]+)$")
+            if description then
+                valid[#valid+1] = { scriptbase, version, description }
+            else
+                valid[#valid+1] = { scriptbase, "", banner }
+            end
+        end
+    end
+end
+                    end
+                end
+                if #valid > 0 then
+                    application.identify()
+                    report("no script name given, known scripts:")
+                    report()
+                    for k=1,#valid do
+                        local v = valid[k]
+                        report("%-12s  %4s  %s",v[1],v[2],v[3])
+                    end
+                end
+            else
+                report("no script name given")
+            end
+        else
+            filename = file.addsuffix(filename,"lua")
+            if file.is_qualified_path(filename) then
+                report("unknown script '%s'",filename)
+            else
+                report("unknown script '%s' or 'mtx-%s'",filename,filename)
+            end
+        end
+        return false
+    end
+end
+
+function runners.prefixes()
+    application.identify()
+    report()
+    report(concat(resolvers.allprefixes(true)," "))
+end
+
+function runners.timedrun(filename) -- just for me
+    if filename and filename ~= "" then
+        runners.timed(function() os.execute(filename) end)
+    end
+end
+
+function runners.timed(action)
+    statistics.timed(action)
+end
+
+function runners.associate(filename)
+    os.launch(filename)
+end
+
+function runners.gethelp(filename)
+    local url = environment.argument("url")
+    if url and url ~= "" then
+        local command = string.gsub(environment.argument("command") or "unknown","^%s*\\*(.-)%s*$","%1")
+        url = utilities.templates.replace(url,{ command = command })
+        os.launch(url)
+    else
+        report("no --url given")
+    end
+end
+
+-- this is a bit dirty ... first we store the first filename and next we
+-- split the arguments so that we only see the ones meant for this script
+-- ... later we will use the second half
+
+local filename = environment.files[1] or ""
+local ok      = true
+
+local before, after = environment.splitarguments(filename)
+environment.arguments_before, environment.arguments_after = before, after
+environment.initializearguments(before)
+
+instance.lsrmode  = environment.argument("lsr") or false
+
+e_verbose = environment.arguments["verbose"] -- delayed till here (we need the ones before script)
+
+if e_verbose then
+    trackers.enable("resolvers.locating")
+end
+
+-- maybe the unset has to go to this level
+
+local is_mkii_stub = runners.registered[file.removesuffix(file.basename(filename))]
+
+local e_argument = environment.argument
+
+if e_argument("timedlog") then
+    logs.settimedlog()
+end
+
+if e_argument("usekpse") or e_argument("forcekpse") or is_mkii_stub then
+
+    resolvers.load_tree(e_argument('tree'),true) -- force resolve of TEXMFCNF
+
+    os.setenv("engine","")
+    os.setenv("progname","")
+
+    local remapper = {
+        otf   = "opentype fonts",
+        ttf   = "truetype fonts",
+        ttc   = "truetype fonts",
+        pfb   = "type1 fonts",
+        other = "other text files",
+    }
+
+    local progname = e_argument("progname") or 'context'
+
+    local function kpse_initialized()
+        texconfig.kpse_init = true
+        local t = os.clock()
+        local k = kpse.original.new("luatex",progname)
+        local dummy = k:find_file("mtxrun.lua") -- so that we're initialized
+        report("kpse fallback with progname '%s' initialized in %s seconds",progname,os.clock()-t)
+        kpse_initialized = function() return k end
+        return k
+    end
+
+    local findfile = resolvers.findfile
+    local showpath = resolvers.showpath
+
+    if e_argument("forcekpse") then
+
+        function resolvers.findfile(name,kind)
+            return (kpse_initialized():find_file(resolvers.cleanpath(name),(kind ~= "" and (remapper[kind] or kind)) or "tex") or "") or ""
+        end
+        function resolvers.showpath(name)
+            return (kpse_initialized():show_path(name)) or ""
+        end
+
+    elseif e_argument("usekpse") or is_mkii_stub then
+
+        resolvers.load()
+
+        function resolvers.findfile(name,kind)
+            local found = findfile(name,kind) or ""
+            if found ~= "" then
+                return found
+            else
+                return (kpse_initialized():find_file(resolvers.cleanpath(name),(kind ~= "" and (remapper[kind] or kind)) or "tex") or "") or ""
+            end
+        end
+        function resolvers.showpath(name)
+            local found = showpath(name) or ""
+            if found ~= "" then
+                return found
+            else
+                return (kpse_initialized():show_path(name)) or ""
+            end
+        end
+
+    end
+
+    function runners.loadbase()
+    end
+
+else
+
+    function runners.loadbase(...)
+        if not resolvers.load(...) then
+            report("forcing cache reload")
+            instance.renewcache = true
+            trackers.enable("resolvers.locating")
+            if not resolvers.load(...) then
+                report("the resolver databases are not present or outdated")
+            end
+        end
+    end
+
+    resolvers.load_tree(e_argument('tree'),e_argument("resolve"))
+
+end
+
+-- joke .. reminds me of messing with gigi terminals
+
+if e_argument("ansi") then
+
+    local formatters = string.formatters
+
+    logs.setformatters {
+        report_yes    = formatters["%-15s | %s"],
+        report_nop    = formatters["%-15s |"],
+        subreport_yes = formatters["%-15s | %s | %s"],
+        subreport_nop = formatters["%-15s | %s |"],
+        status_yes    = formatters["%-15s : %s\n"],
+        status_nop    = formatters["%-15s :\n"],
+    }
+
+end
+
+if e_argument("script") or e_argument("scripts") then
+
+    -- run a script by loading it (using libs), pass args
+
+    if e_argument("nofiledatabase") then
+        -- handy for mtx-update
+    else
+        runners.loadbase()
+    end
+    if is_mkii_stub then
+        ok = runners.execute_script(filename,false,true)
+    else
+        ok = runners.execute_ctx_script(filename)
+    end
+
+elseif e_argument("selfmerge") then
+
+    -- embed used libraries
+
+    runners.loadbase()
+    local found = locate_libs()
+
+    if found then
+        local mtxrun = resolvers.findfile("mtxrun.lua") -- includes local name
+        if lfs.isfile(mtxrun) then
+            utilities.merger.selfmerge(mtxrun,own.libs,{ found })
+            application.report("runner updated on resolved path: %s",mtxrun)
+        else
+            utilities.merger.selfmerge(own.name,own.libs,{ found })
+            application.report("runner updated on relative path: %s",own.name)
+        end
+    end
+
+elseif e_argument("selfclean") then
+
+    -- remove embedded libraries
+
+    runners.loadbase()
+
+    local mtxrun = resolvers.findfile("mtxrun.lua") -- includes local name
+    if lfs.isfile(mtxrun) then
+        utilities.merger.selfclean(mtxrun)
+        application.report("runner cleaned on resolved path: %s",mtxrun)
+    else
+        utilities.merger.selfclean(own.name)
+        application.report("runner cleaned on relative path: %s",own.name)
+    end
+
+elseif e_argument("selfupdate") then
+
+    runners.loadbase()
+    trackers.enable("resolvers.locating")
+    resolvers.updatescript(own.name,"mtxrun")
+
+elseif e_argument("ctxlua") or e_argument("internal") then
+
+    -- run a script by loading it (using libs)
+
+    runners.loadbase()
+    ok = runners.execute_script(filename,true)
+
+elseif e_argument("execute") then
+
+    -- execute script
+
+    runners.loadbase()
+    ok = runners.execute_script(filename)
+
+elseif e_argument("direct") then
+
+    -- equals bin:
+
+    runners.loadbase()
+    ok = runners.execute_program(filename)
+
+elseif e_argument("edit") then
+
+    -- edit file
+
+    runners.loadbase()
+    runners.edit_script(filename)
+
+elseif e_argument("launch") then
+
+    runners.loadbase()
+    runners.launch_file(filename)
+
+elseif e_argument("associate") then
+
+    runners.associate(filename)
+
+elseif e_argument("gethelp") then
+
+    runners.gethelp()
+
+elseif e_argument("makestubs") then
+
+    -- make stubs (depricated)
+
+    runners.handle_stubs(true)
+
+elseif e_argument("removestubs") then
+
+    -- remove stub (depricated)
+
+    runners.loadbase()
+    runners.handle_stubs(false)
+
+elseif e_argument("resolve") then
+
+    -- resolve string
+
+    runners.loadbase()
+    runners.resolve_string(filename)
+
+elseif e_argument("locate") then
+
+    -- locate file (only database)
+
+    runners.loadbase()
+    runners.locate_file(filename)
+
+elseif e_argument("platform") or e_argument("show-platform") then
+
+    -- locate platform
+
+    runners.loadbase()
+    runners.locate_platform()
+
+elseif e_argument("prefixes") then
+
+    runners.loadbase()
+    runners.prefixes()
+
+elseif e_argument("timedrun") then
+
+    -- locate platform
+
+    runners.loadbase()
+    runners.timedrun(filename)
+
+elseif e_argument("variables") or e_argument("show-variables") or e_argument("expansions") or e_argument("show-expansions") then
+
+    -- luatools: runners.execute_ctx_script("mtx-base","--expansions",filename)
+
+    resolvers.load("nofiles")
+    resolvers.listers.variables(e_argument("pattern"))
+
+elseif e_argument("configurations") or e_argument("show-configurations") then
+
+    -- luatools: runners.execute_ctx_script("mtx-base","--configurations",filename)
+
+    resolvers.load("nofiles")
+    resolvers.listers.configurations()
+
+elseif e_argument("find-file") then
+
+    -- luatools: runners.execute_ctx_script("mtx-base","--find-file",filename)
+
+    resolvers.load()
+    local e_all     = e_argument("all")
+    local e_pattern = e_argument("pattern")
+    local e_format  = e_argument("format")
+    local finder    = e_all and resolvers.findfiles or resolvers.findfile
+    if not e_pattern then
+        runners.register_arguments(filename)
+        environment.initializearguments(environment.arguments_after)
+        resolvers.dowithfilesandreport(finder,environment.files,e_format)
+    elseif type(e_pattern) == "string" then
+        resolvers.dowithfilesandreport(finder,{ e_pattern },e_format)
+    end
+
+elseif e_argument("find-path") then
+
+    -- luatools: runners.execute_ctx_script("mtx-base","--find-path",filename)
+
+    resolvers.load()
+    local path = resolvers.findpath(filename, instance.my_format)
+    if e_verbose then
+        report(path)
+    else
+        print(path)
+    end
+
+elseif e_argument("expand-braces") then
+
+    -- luatools: runners.execute_ctx_script("mtx-base","--expand-braces",filename)
+
+    resolvers.load("nofiles")
+    runners.register_arguments(filename)
+    environment.initializearguments(environment.arguments_after)
+    resolvers.dowithfilesandreport(resolvers.expandbraces, environment.files)
+
+elseif e_argument("expand-path") then
+
+    -- luatools: runners.execute_ctx_script("mtx-base","--expand-path",filename)
+
+    resolvers.load("nofiles")
+    runners.register_arguments(filename)
+    environment.initializearguments(environment.arguments_after)
+    resolvers.dowithfilesandreport(resolvers.expandpath, environment.files)
+
+elseif e_argument("expand-var") or e_argument("expand-variable") then
+
+    -- luatools: runners.execute_ctx_script("mtx-base","--expand-var",filename)
+
+    resolvers.load("nofiles")
+    runners.register_arguments(filename)
+    environment.initializearguments(environment.arguments_after)
+    resolvers.dowithfilesandreport(resolvers.expansion, environment.files)
+
+elseif e_argument("show-path") or e_argument("path-value") then
+
+    -- luatools: runners.execute_ctx_script("mtx-base","--show-path",filename)
+
+    resolvers.load("nofiles")
+    runners.register_arguments(filename)
+    environment.initializearguments(environment.arguments_after)
+    resolvers.dowithfilesandreport(resolvers.showpath, environment.files)
+
+elseif e_argument("var-value") or e_argument("show-value") then
+
+    -- luatools: runners.execute_ctx_script("mtx-base","--show-value",filename)
+
+    resolvers.load("nofiles")
+    runners.register_arguments(filename)
+    environment.initializearguments(environment.arguments_after)
+    resolvers.dowithfilesandreport(resolvers.variable,environment.files)
+
+elseif e_argument("format-path") then
+
+    -- luatools: runners.execute_ctx_script("mtx-base","--format-path",filename)
+
+    resolvers.load()
+    report(caches.getwritablepath("format"))
+
+elseif e_argument("pattern") then
+
+    -- luatools
+
+    runners.execute_ctx_script("mtx-base","--pattern='" .. e_argument("pattern") .. "'",filename)
+
+elseif e_argument("generate") then
+
+    -- luatools
+
+    if filename and filename ~= "" then
+        resolvers.load("nofiles")
+        trackers.enable("resolvers.locating")
+        resolvers.renew(filename)
+    else
+        instance.renewcache = true
+        trackers.enable("resolvers.locating")
+        resolvers.load()
+    end
+
+    e_verbose = true
+
+elseif e_argument("make") or e_argument("ini") or e_argument("compile") then
+
+    -- luatools: runners.execute_ctx_script("mtx-base","--make",filename)
+
+    resolvers.load()
+    trackers.enable("resolvers.locating")
+    environment.make_format(filename)
+
+elseif e_argument("run") then
+
+    -- luatools
+
+    runners.execute_ctx_script("mtx-base","--run",filename)
+
+elseif e_argument("fmt") then
+
+    -- luatools
+
+    runners.execute_ctx_script("mtx-base","--fmt",filename)
+
+elseif e_argument("help") and filename=='base' then
+
+    -- luatools
+
+    runners.execute_ctx_script("mtx-base","--help")
+
+elseif e_argument("version") then
+
+    application.version()
+
+    application.report("source path",environment.ownbin)
+
+elseif e_argument("directives") then
+
+    directives.show()
+
+elseif e_argument("trackers") then
+
+    trackers.show()
+
+elseif e_argument("experiments") then
+
+    experiments.show()
+
+elseif e_argument("exporthelp") then
+
+    runners.loadbase()
+    application.export(e_argument("exporthelp"),filename)
+
+elseif e_argument("help") or filename=='help' or filename == "" then
+
+    application.help()
+
+elseif find(filename,"^bin:") then
+
+    runners.loadbase()
+    ok = runners.execute_program(filename)
+
+elseif is_mkii_stub then
+
+    -- execute mkii script
+
+    runners.loadbase()
+    ok = runners.execute_script(filename,false,true)
+
+elseif false then
+
+    runners.loadbase()
+    ok = runners.execute_ctx_script(filename)
+    if not ok then
+        ok = runners.execute_script(filename)
+    end
+
+elseif environment.files[1] == 'texmfcnf.lua' then -- so that we don't need to load mtx-base
+
+    resolvers.load("nofiles")
+    resolvers.listers.configurations()
+
+else
+    runners.loadbase()
+    runners.execute_ctx_script("mtx-base",filename)
+
+end
+
+if e_verbose then
+    report()
+    report("elapsed lua time: %0.3f seconds",os.runtime())
+end
+
+if os.type ~= "windows" then
+    texio.write("\n") -- is this still valid?
+end
+
+if ok == false then ok = 1 elseif ok == true or ok == nil then ok = 0 end
+
+-- os.exit(ok,true) -- true forces a cleanup in 5.2+
+
+os.exit(ok)         -- true forces a cleanup in 5.2+ but reports a wrong number then
diff --git a/scripts/context/stubs/win64/mtxrunjit.exe b/scripts/context/stubs/win64/mtxrunjit.exe
new file mode 100755
index 000000000..93290a6e0
--- /dev/null
+++ b/scripts/context/stubs/win64/mtxrunjit.exe
diff --git a/scripts/context/stubs/win64/mtxworks.exe b/scripts/context/stubs/win64/mtxworks.exe
new file mode 100755
index 000000000..93290a6e0
--- /dev/null
+++ b/scripts/context/stubs/win64/mtxworks.exe
diff --git a/scripts/context/stubs/win64/pstopdf.exe b/scripts/context/stubs/win64/pstopdf.exe
new file mode 100755
index 000000000..93290a6e0
--- /dev/null
+++ b/scripts/context/stubs/win64/pstopdf.exe
diff --git a/scripts/context/stubs/win64/texexec.exe b/scripts/context/stubs/win64/texexec.exe
new file mode 100755
index 000000000..93290a6e0
--- /dev/null
+++ b/scripts/context/stubs/win64/texexec.exe
diff --git a/scripts/context/stubs/win64/texmfstart.exe b/scripts/context/stubs/win64/texmfstart.exe
new file mode 100755
index 000000000..93290a6e0
--- /dev/null
+++ b/scripts/context/stubs/win64/texmfstart.exe
diff --git a/tex/context/base/cont-new.mkiv b/tex/context/base/cont-new.mkiv
index 81839f452..b5cd9b9fc 100644
--- a/tex/context/base/cont-new.mkiv
+++ b/tex/context/base/cont-new.mkiv
@@ -11,7 +11,7 @@
 %C therefore copyrighted by \PRAGMA. See mreadme.pdf for
 %C details.
 
-\newcontextversion{2014.01.23 01:55}
+\newcontextversion{2014.01.24 10:20}
 
 %D This file is loaded at runtime, thereby providing an excellent place for
 %D hacks, patches, extensions and new features.
diff --git a/tex/context/base/context-version.pdf b/tex/context/base/context-version.pdf
index a64d902fc..c1a798a5a 100644
--- a/tex/context/base/context-version.pdf
+++ b/tex/context/base/context-version.pdf
diff --git a/tex/context/base/context.mkiv b/tex/context/base/context.mkiv
index b32173e24..23147890f 100644
--- a/tex/context/base/context.mkiv
+++ b/tex/context/base/context.mkiv
@@ -28,7 +28,7 @@
 %D up and the dependencies are more consistent.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2014.01.23 01:55}
+\edef\contextversion{2014.01.24 10:20}
 \edef\contextkind   {beta}
 
 %D For those who want to use this:
diff --git a/tex/context/base/math-fbk.lua b/tex/context/base/math-fbk.lua
index 335e83a20..f4bd1348a 100644
--- a/tex/context/base/math-fbk.lua
+++ b/tex/context/base/math-fbk.lua
@@ -398,9 +398,9 @@ local function accent_to_extensible(target,newchr,original,oldchr,height,depth,s
                 end
             end
         end
-        return glyphdata
+        return glyphdata, true
     else
-        return olddata
+        return olddata, false
     end
 end
 
@@ -456,8 +456,10 @@ addextra(0xFE303, { description="EXTENSIBLE OF 0x0303", unicodeslot=0xFE303, mat
 local function smashed(data,unicode,private)
     local target = data.target
     local height = target.parameters.xheight / 2
-    local c = accent_to_extensible(target,private,data.original,unicode,height,0,nil,-height)
-    c.top_accent = nil
+    local c, done = accent_to_extensible(target,private,data.original,unicode,height,0,nil,-height)
+    if done then
+        c.top_accent = nil -- or maybe also all the others
+    end
     return c
 end
 
diff --git a/tex/context/base/publ-ini.mkiv b/tex/context/base/publ-ini.mkiv
index bf249991a..d74e76aee 100644
--- a/tex/context/base/publ-ini.mkiv
+++ b/tex/context/base/publ-ini.mkiv
@@ -45,6 +45,80 @@
 
 \unprotect
 
+% a dedicated construction mechanism
+
+\installcorenamespace {btxlist}
+
+\installcommandhandler \??btxlist {btxlist} \??btxlist
+
+\def\v!btxlist{btxlist}
+
+\unexpanded\setvalue{\??constructioninitializer\v!btxlist}%
+  {\let\currentbtxlist                  \currentconstruction
+   \let\constructionparameter           \btxlistparameter
+   \let\detokenizedconstructionparameter\detokenizedbtxlistparameter
+   \let\letconstructionparameter        \letbtxlistparameter
+   \let\useconstructionstyleandcolor    \usebtxliststyleandcolor
+   \let\setupcurrentconstruction        \setupcurrentbtxlist}
+
+\expandafter\let\csname\??constructionmainhandler   \v!btxlist\expandafter\endcsname\csname\??constructionmainhandler   \v!construction\endcsname
+\expandafter\let\csname\??constructioncommandhandler\v!btxlist\expandafter\endcsname\csname\??constructioncommandhandler\v!construction\endcsname
+\expandafter\let\csname\??constructiontexthandler   \v!btxlist\expandafter\endcsname\csname\??constructiontexthandler   \v!construction\endcsname
+
+\unexpanded\setvalue{\??constructioncommandhandler\v!btxlist}%
+  {\csname\??constructionstarthandler\v!construction\endcsname
+   \csname\??constructionstophandler \v!construction\endcsname
+   \endgroup}
+
+\unexpanded\setvalue{\??constructionstarthandler\v!btxlist}%
+  {\csname\??constructionstarthandler\v!construction\endcsname}
+
+\unexpanded\setvalue{\??constructionstophandler\v!btxlist}%
+  {\csname\??constructionstophandler\v!construction\endcsname
+   \endgroup}
+
+\unexpanded\def\startbtxlistentry#1%
+  {\begingroup
+  %\the\everybtxlistentry
+   \strc_constructions_initialize{#1}%
+   \csname\??constructionstarthandler\currentconstructionhandler\endcsname}
+
+\unexpanded\def\stopbtxlistentry
+  {\csname\??constructionstophandler\currentconstructionhandler\endcsname}
+
+\unexpanded\def\strc_constructions_initialize#1% class instance
+  {\edef\currentconstruction{#1}%
+   \let\currentconstructionlistentry\!!zerocount
+   \expandafter\let\expandafter\currentconstructionmain   \csname\??constructionmain \currentconstruction\endcsname
+   \expandafter\let\expandafter\currentconstructionlevel  \csname\??constructionlevel\currentconstruction\endcsname
+   \expandafter\let\expandafter\currentconstructionhandler\csname\??constructionclass\currentconstruction\endcsname
+   \csname\??constructioninitializer\currentconstructionhandler\endcsname}
+
+\appendtoks
+%     \ifx\currentbtxlistparent\empty
+%         \defineconstruction[\currentbtxlist][\currentbtxlistparent][\s!handler=\v!btxlist,\c!level=1]%
+%     \else
+%         \defineconstruction[\currentbtxlist][\s!handler=\v!btxlist,\c!level=1]%
+%     \fi
+    \ifx\currentbtxlistparent\empty
+        \letvalue{\??constructionmain\currentbtxlist}\currentbtx
+    \else
+        \letvalue{\??constructionmain\currentbtxlist}\currentbtxparent
+    \fi
+    \setevalue{\??constructionlevel\currentbtxlist}{\number\btxlistparameter\c!level}%
+    \setevalue{\??constructionclass\currentbtxlist}{\btxlistparameter\s!handler}%
+%      \settrue\c_strc_constructions_title_state
+\to \everydefinebtxlist
+
+\setupbtxlist
+  [\s!handler=\v!btxlist,
+   \c!level=1,
+%    \c!alternative=\v!left,
+%    \c!distance=\emwidth]
+]
+
+% here starts the bib stuff
+
 \installcorenamespace {btxdataset}
 \installcorenamespace {btxlistvariant}
 \installcorenamespace {btxcitevariant}
@@ -217,22 +291,22 @@
 % \def\publ_list_processor % bibref -> btx (old method, keep as reference)
 %   {\ctxcommand{btxaddtolist("\currentbtxrendering",\currentlistindex,"btxref")}}
 
-\definelist
+\definelist % only used for selecting
   [btx]
-  [\c!before=,
-  %\c!inbetween=,
-   \c!after=]
+
+\setuplist
+  [btx]%
+  [\c!state=\v!start]%
+
+% \definedescription
+%   [btx]
+%   [\c!before=,
+%   %\c!inbetween=,
+%    \c!after=]
 
 \appendtoks
-    \definelist
-      [btx:\currentbtxrendering]%
-      [btx]
-    \setuplist
-      [btx:\currentbtxrendering]%
-      [\c!state=\v!start]%
-   % \installstructurelistprocessor
-   %   {\currentbtxrendering:userdata}%
-   %   {\publ_list_processor}%
+    \definebtxlist
+      [\currentbtxrendering]%
 \to \everydefinebtxrendering
 
 \unexpanded\def\btx_entry_inject
@@ -264,6 +338,7 @@
    \edef\currentbtxrendering{#1}%
    \setupcurrentbtxrendering[#2]%
    \edef\currentlist{btx:\currentbtxrendering}%
+   \let\currentbtxlist\currentbtxrendering
    \publ_place_list_check_criterium
    \edef\currentbtxrenderingtitle{\btxrenderingparameter\c!title}%
    \ifx\currentbtxrenderingtitle\empty
@@ -279,7 +354,8 @@
   {\begingroup
    \edef\currentbtxrendering{#1}%
    \setupcurrentbtxrendering[#2]%
-   \edef\currentlist{btx:\currentbtxrendering}%
+   \edef\currentlist{btx}%
+   \let\currentbtxlist\currentbtxrendering
    \publ_place_list_check_criterium
    \publ_place_list_indeed
    \endgroup}
@@ -296,25 +372,19 @@
    \fi
 \to \everysetupbtxlistplacement
 
-% use description instead of list ... more flexible .. but then not via
-% a real description in the tuc but directly
-
 \def\publ_place_list_indeed
   {\startbtxrendering[\currentbtxrendering]%
      \directsetup{\btxrenderingparameter\c!setups}%
    % \determinelistcharacteristics[\currentbtxrendering]%
      \edef\currentbtxalternative{\btxrenderingparameter\c!alternative}%
      \edef\currentbtxdataset{\btxrenderingparameter\c!dataset}%
-     \edef\currentlist{btx:\currentbtxrendering}%
+     \edef\currentlist{btx}%
+     \let\currentbtxlist\currentbtxrendering
      \the\everysetupbtxlistplacement
      \forgetall
      \ctxcommand{btxsetlistmethod("\currentbtxdataset","\btxrenderingparameter\c!method")}%
      \startpacked[\v!blank]%
        % here we just collect items
-     % \strc_lists_analyze
-     %   {btx}%
-     %   {\currentbtxcriterium}%
-     %   {\namedlistparameter\currentbtxrendering\c!number}%
        \ctxcommand{btxcollectlistentries {
            names        = "btx",
            criterium    = "\currentbtxcriterium",
@@ -337,10 +407,10 @@
          \fi
          \d_publ_number_distance\btxrenderingparameter\c!distance
        \fi
-       \letlistparameter\c!width   \d_publ_number_width
-       \letlistparameter\c!distance\d_publ_number_distance
+       % only when authomatic
+       \letbtxlistparameter\c!width   \d_publ_number_width
+       \letbtxlistparameter\c!distance\d_publ_number_distance
        % this actually typesets them
-       \letlistparameter\c!interaction\v!none
        \ctxcommand{btxflushlistentries("\currentbtxdataset","\btxrenderingparameter\c!sorttype")}%
      \stoppacked
    \stopbtxrendering
@@ -373,11 +443,12 @@
    \ifconditional\c_publ_place_register
      \publ_place_list_entry_register
    \fi
-   \edef\currentlist              {btx:\currentbtxrendering}%
-   \let\currentlistentrynumber    \btx_reference_inject
-   \let\currentlistentrytitle     \btx_entry_inject
-   \let\currentlistentrypagenumber\empty
-   \strc_lists_apply_renderingsetup
+   \edef\currentlist  {btx}%
+%    \let\currentbtxlist\currentbtxrendering
+   \let\currentconstructiontext\btx_reference_inject
+   \startbtxlistentry\currentbtxrendering
+     \btx_entry_inject
+   \stopbtxlistentry
    }%\endstrut}
 
 \unexpanded\def\btxchecklistentry#1% called at the lua end
diff --git a/tex/context/base/publ-tra.lua b/tex/context/base/publ-tra.lua
index 0b9c0525c..98c81d800 100644
--- a/tex/context/base/publ-tra.lua
+++ b/tex/context/base/publ-tra.lua
@@ -7,8 +7,6 @@ if not modules then modules = { } end modules ['publ-tra'] = {
 }
 
 local sortedhash = table.sortedhash
-local sorted     = table.sorted
-local allocate   = utilities.storage.allocate
 
 local tracers        = { }
 publications.tracers = tracers
@@ -19,7 +17,7 @@ local NC, NR = context.NC, context.NR
 local bold = context.bold
 local darkgreen, darkred, darkblue = context.darkgreen, context.darkred, context.darkblue
 
-local fields = allocate ( table.sorted {
+local fields = table.sorted {
     "abstract",
     "address",
     "annotate",
@@ -66,9 +64,9 @@ local fields = allocate ( table.sorted {
     "monthfiled",
     "yearfiled",
     "revision",
-} )
+}
 
-local citevariants = allocate ( table.sorted {
+local citevariants = table.sorted {
     "author",
     "authoryear",
     "authoryears",
@@ -83,13 +81,13 @@ local citevariants = allocate ( table.sorted {
     "page",
     "none",
     "num",
-} )
+}
 
-local listvariants = allocate ( table.sorted {
+local listvariants = table.sorted {
     "author",
     "editor",
     "artauthor",
-} )
+}
 
 -- local categories = table.sorted {
 --     "article",
@@ -108,7 +106,7 @@ local listvariants = allocate ( table.sorted {
 --     "unpublished",
 -- }
 
-local categories = allocate {
+local categories = {
     article = {
         required = { "author", "title", "journal", "year" },
         optional = { "volume", "number", "pages", "month", "note" },
@@ -234,7 +232,7 @@ function tracers.showdatasetcompleteness(dataset)
     local luadata = datasets[dataset].luadata
 
     if next(luadata) then
-        for tag, entry in sortedhash(luadata) do
+        for tag, entry in table.sortedhash(luadata) do
             local category = entry.category
             local fields = categories[category]
             if fields then
diff --git a/tex/context/base/status-files.pdf b/tex/context/base/status-files.pdf
index 9866327f9..7fecea456 100644
--- a/tex/context/base/status-files.pdf
+++ b/tex/context/base/status-files.pdf
diff --git a/tex/context/base/status-lua.pdf b/tex/context/base/status-lua.pdf
index 121127e94..32b02d0ce 100644
--- a/tex/context/base/status-lua.pdf
+++ b/tex/context/base/status-lua.pdf
diff --git a/tex/context/base/strc-lst.mkvi b/tex/context/base/strc-lst.mkvi
index 63c3e030a..f78881221 100644
--- a/tex/context/base/strc-lst.mkvi
+++ b/tex/context/base/strc-lst.mkvi
@@ -889,6 +889,7 @@
 
 \startsetups[\??listrenderings:abc]
     \endgraf % are we grouped?
+% \advance % yes or no ... \rightskip is also honored
     \leftskip\listparameter\c!margin % after \endgraf !
     \listparameter\c!before
     \endgraf
diff --git a/tex/generic/context/luatex/luatex-fonts-merged.lua b/tex/generic/context/luatex/luatex-fonts-merged.lua
index 45d810517..65746de04 100644
--- a/tex/generic/context/luatex/luatex-fonts-merged.lua
+++ b/tex/generic/context/luatex/luatex-fonts-merged.lua
@@ -1,6 +1,6 @@
 -- merged file : luatex-fonts-merged.lua
 -- parent file : luatex-fonts.lua
--- merge date  : 01/23/14 01:55:54
+-- merge date  : 01/24/14 10:20:14
 
 do -- begin closure to overcome local limits and interference