16 files changed, 72 insertions, 41 deletions
diff --git a/tex/context/base/mkii/cont-new.mkii b/tex/context/base/mkii/cont-new.mkii
index fcd325bb0..8d536ed0f 100644
--- a/tex/context/base/mkii/cont-new.mkii
+++ b/tex/context/base/mkii/cont-new.mkii
@@ -11,7 +11,7 @@
 %C therefore copyrighted by \PRAGMA. See mreadme.pdf for
 %C details.
 
-\newcontextversion{2021.06.24 18:50}
+\newcontextversion{2021.06.24 23:39}
 
 %D This file is loaded at runtime, thereby providing an
 %D excellent place for hacks, patches, extensions and new
diff --git a/tex/context/base/mkii/context.mkii b/tex/context/base/mkii/context.mkii
index 9d1f707b6..90520a150 100644
--- a/tex/context/base/mkii/context.mkii
+++ b/tex/context/base/mkii/context.mkii
@@ -20,7 +20,7 @@
 %D your styles an modules.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2021.06.24 18:50}
+\edef\contextversion{2021.06.24 23:39}
 
 %D For those who want to use this:
 
diff --git a/tex/context/base/mkiv/cont-new.mkiv b/tex/context/base/mkiv/cont-new.mkiv
index 5ae1a881c..3323fde71 100644
--- a/tex/context/base/mkiv/cont-new.mkiv
+++ b/tex/context/base/mkiv/cont-new.mkiv
@@ -13,7 +13,7 @@
 
 % \normalend % uncomment this to get the real base runtime
 
-\newcontextversion{2021.06.24 18:50}
+\newcontextversion{2021.06.24 23:39}
 
 %D This file is loaded at runtime, thereby providing an excellent place for hacks,
 %D patches, extensions and new features. There can be local overloads in cont-loc
diff --git a/tex/context/base/mkiv/context.mkiv b/tex/context/base/mkiv/context.mkiv
index 20d33af39..853812de2 100644
--- a/tex/context/base/mkiv/context.mkiv
+++ b/tex/context/base/mkiv/context.mkiv
@@ -45,7 +45,7 @@
 %D {YYYY.MM.DD HH:MM} format.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2021.06.24 18:50}
+\edef\contextversion{2021.06.24 23:39}
 
 %D Kind of special:
 
diff --git a/tex/context/base/mkiv/l-os.lua b/tex/context/base/mkiv/l-os.lua
index 06cc35a79..b46036757 100644
--- a/tex/context/base/mkiv/l-os.lua
+++ b/tex/context/base/mkiv/l-os.lua
@@ -183,11 +183,30 @@ end
 
 -- end of environment hack
 
+if not io.fileseparator then
+    if find(os.getenv("PATH"),";",1,true) then
+        io.fileseparator, io.pathseparator, os.type = "\\", ";", os.type or "windows"
+    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 execute = os.execute
 local iopopen = io.popen
+local ostype  = os.type
 
 local function resultof(command)
-    local handle = iopopen(command,"rb") -- already has flush, b is new !
+    -- already has flush, b is new and we need it to pipe xz output
+    local handle = iopopen(command,ostype == "windows" and "rb" or "r")
     if handle then
         local result = handle:read("*all") or ""
         handle:close()
@@ -203,22 +222,6 @@ function os.pipeto(command)
     return iopopen(command,"w") -- already has flush
 end
 
-if not io.fileseparator then
-    if find(os.getenv("PATH"),";",1,true) then
-        io.fileseparator, io.pathseparator, os.type = "\\", ";", os.type or "windows"
-    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",
diff --git a/tex/context/base/mkiv/status-files.pdf b/tex/context/base/mkiv/status-files.pdf
index 4c0c46993..3e3408ef5 100644
--- a/tex/context/base/mkiv/status-files.pdf
+++ b/tex/context/base/mkiv/status-files.pdf
diff --git a/tex/context/base/mkiv/status-lua.pdf b/tex/context/base/mkiv/status-lua.pdf
index ca29ed3a5..d8d7fbd47 100644
--- a/tex/context/base/mkiv/status-lua.pdf
+++ b/tex/context/base/mkiv/status-lua.pdf
diff --git a/tex/context/base/mkxl/cont-new.mkxl b/tex/context/base/mkxl/cont-new.mkxl
index caa9a866b..9e0a56317 100644
--- a/tex/context/base/mkxl/cont-new.mkxl
+++ b/tex/context/base/mkxl/cont-new.mkxl
@@ -13,7 +13,7 @@
 
 % \normalend % uncomment this to get the real base runtime
 
-\newcontextversion{2021.06.24 18:50}
+\newcontextversion{2021.06.24 23:39}
 
 %D This file is loaded at runtime, thereby providing an excellent place for hacks,
 %D patches, extensions and new features. There can be local overloads in cont-loc
diff --git a/tex/context/base/mkxl/context.mkxl b/tex/context/base/mkxl/context.mkxl
index 17c5ec38d..f26dcc6cd 100644
--- a/tex/context/base/mkxl/context.mkxl
+++ b/tex/context/base/mkxl/context.mkxl
@@ -29,7 +29,7 @@
 %D {YYYY.MM.DD HH:MM} format.
 
 \immutable\edef\contextformat {\jobname}
-\immutable\edef\contextversion{2021.06.24 18:50}
+\immutable\edef\contextversion{2021.06.24 23:39}
 
 %overloadmode 1 % check frozen / warning
 %overloadmode 2 % check frozen / error
diff --git a/tex/context/base/mkxl/font-chk.lmt b/tex/context/base/mkxl/font-chk.lmt
index b5a875261..1587919f0 100644
--- a/tex/context/base/mkxl/font-chk.lmt
+++ b/tex/context/base/mkxl/font-chk.lmt
@@ -540,7 +540,7 @@ do
     function definers.registerfallbackfont(style,list)
         local l = fallbacks[style]
         if l then
-            for s in gmatch(list,"%S+") do
+            for s in gmatch(list,"[^, ]+") do
                 if not contains(l,s) then
                     l[#l+1] = s
                 end
diff --git a/tex/context/base/mkxl/font-ctx.lmt b/tex/context/base/mkxl/font-ctx.lmt
index b735e3d2f..a6e962872 100644
--- a/tex/context/base/mkxl/font-ctx.lmt
+++ b/tex/context/base/mkxl/font-ctx.lmt
@@ -156,7 +156,8 @@ or
 -- this will move elsewhere ...
 
 local function getfontname(tfmdata)
-    return basename(type(tfmdata) == "number" and properties[tfmdata].name or tfmdata.properties.name)
+    local p = type(tfmdata) == "number" and properties[tfmdata] or tfmdata.properties
+    return basename((p and (p.name or p.fullname or p.fontname)) or "unknown")
 end
 
 helpers.name = getfontname
diff --git a/tex/context/base/mkxl/meta-ini.mkxl b/tex/context/base/mkxl/meta-ini.mkxl
index 83cf86b35..cd8f74439 100644
--- a/tex/context/base/mkxl/meta-ini.mkxl
+++ b/tex/context/base/mkxl/meta-ini.mkxl
@@ -634,9 +634,9 @@
 
 \def\meta_handle_unique_graphic#1#2#3% when there are too many, we can store data at the lua end, although,
   {\begingroup                       % when there are that many they're probably not that unique anyway
-   \edef\currentmpcategory{#1}%
-   \extendMPoverlaystamp{#2}% incl prepare
-   \ifcsname\??mpgraphic\overlaystamp:#1\endcsname
+ % \currentmpcategory already set
+   \extendMPoverlaystamp{#2}% incl prepare (maybe move to lua)
+   \ifcsname\??mpgraphic\overlaystamp:#1\endcsname % todo: is now per instance !
      \lastnamedcs
    \else
      \meta_enable_include % redundant
@@ -670,7 +670,7 @@
 
 \def\meta_handle_use_graphic#1#2#3%
   {\begingroup
-   \edef\currentmpcategory{#1}%
+ % \currentmpcategory already set
    \meta_enable_include % redundant
    \meta_process_graphic{#3}%
    \endgroup}
@@ -699,7 +699,7 @@
 
 \def\meta_handle_reusable_graphic#1#2#3%
   {\begingroup
-   \edef\currentmpcategory{#1}%
+ % \currentmpcategory already set
    \meta_enable_include % redundant
    \global\advance\c_meta_object_counter\plusone
    \meta_use_box{\number\c_meta_object_counter}\hpack{\meta_process_graphic{#3}}% was vbox, graphic must end up as hbox
diff --git a/tex/context/base/mkxl/mlib-lmp.lmt b/tex/context/base/mkxl/mlib-lmp.lmt
index c493c55ae..c4a141eee 100644
--- a/tex/context/base/mkxl/mlib-lmp.lmt
+++ b/tex/context/base/mkxl/mlib-lmp.lmt
@@ -103,8 +103,12 @@ end)
 -- registerscript("mpvar", function() return getmacro(mpgnamespace .. getmacro("currentmpcategory") .. ":" .. scanmpstring(), true) end) -- Isn't it already edef'd?
 -- registerscript("mpvar", function() return getmacro(metapost.namespace .. scanmpstring(), true) end) -- Isn't it already edef'd?
 
-local scanstring  = mp.scan.string
-local expandtex   = mp.expandtex
+local scanstring      = mp.scan.string
+local expandtex       = mp.expandtex
+
+local injectnumeric   = mp.inject.numeric
+local injectstring    = mp.inject.string
+local injectboolean   = mp.inject.boolean
 
 local tokenvalues     = tokens.values
 local dimension_value = tokenvalues.dimension
@@ -113,8 +117,32 @@ local boolean_value   = tokenvalues.boolean
 local string_value    = tokenvalues.string
 local unknown_value   = tokenvalues.none
 
-registerdirect("mpvard", function() expandtex(dimension_value,"mpcategoryparameter",true,scanstring()) end)
-registerdirect("mpvarn", function() expandtex(integer_value,  "mpcategoryparameter",true,scanstring()) end)
-registerdirect("mpvars", function() expandtex(string_value,   "mpcategoryparameter",true,scanstring()) end)
-registerdirect("mpvarb", function() expandtex(boolean_value,  "mpcategoryparameter",true,scanstring()) end)
-registerdirect("mpvar",  function() expandtex(unknown_value,  "mpcategoryparameter",true,scanstring()) end)
+registerdirect("mpvard", function()
+    if not expandtex(dimension_value,"mpcategoryparameter",true,scanstring()) then
+        injectnumeric(0)
+    end
+end)
+
+registerdirect("mpvarn", function()
+    if not expandtex(integer_value,  "mpcategoryparameter",true,scanstring(),0) then
+        injectnumeric(0)
+    end
+end)
+
+registerdirect("mpvars", function()
+    if not expandtex(string_value,   "mpcategoryparameter",true,scanstring(),"") then
+        injectstring("")
+    end
+end)
+
+registerdirect("mpvarb", function()
+    if not expandtex(boolean_value,  "mpcategoryparameter",true,scanstring(),false) then
+        injectboolean(false)
+    end
+end)
+
+registerdirect("mpvar", function()
+    if not expandtex(unknown_value,  "mpcategoryparameter",true,scanstring(),0) then
+        injectnumeric(0)
+    end
+end)
diff --git a/tex/context/base/mkxl/mlib-lua.lmt b/tex/context/base/mkxl/mlib-lua.lmt
index 6acb159f6..ceca9668a 100644
--- a/tex/context/base/mkxl/mlib-lua.lmt
+++ b/tex/context/base/mkxl/mlib-lua.lmt
@@ -79,7 +79,7 @@ local getstatus = mplib.getstatus
 local expandtex = mplib.expandtex
 
 mp.solve     = function(...) return solvepath(currentmpx,...) end
-mp.expandtex = function(...) expandtex(currentmpx,...) end
+mp.expandtex = function(...) return expandtex(currentmpx,...) end
 
 local injectpath      = mplib.injectpath
 local injectnumeric   = mplib.injectnumeric
diff --git a/tex/context/base/mkxl/supp-box.mkxl b/tex/context/base/mkxl/supp-box.mkxl
index fc880852b..52f54e327 100644
--- a/tex/context/base/mkxl/supp-box.mkxl
+++ b/tex/context/base/mkxl/supp-box.mkxl
@@ -2878,12 +2878,11 @@
 %D
 %D \starttyping
 %D \setbox0\hbox{!!!!!}
-%D \permanent\protected\def\showboxhere{\showbox nolevels content online }
 %D \showbox     0
 %D \showboxhere 0 % always on console, less clutter
 %D \stoptyping
 
-\permanent\protected\def\showboxhere{\showbox nolevels content online }
+\untraced\permanent\protected\def\showboxhere{\showbox nolevels content online }
 
 \protect \endinput
 
diff --git a/tex/generic/context/luatex/luatex-fonts-merged.lua b/tex/generic/context/luatex/luatex-fonts-merged.lua
index 36893a527..f112ba224 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 : c:/data/develop/context/sources/luatex-fonts-merged.lua
 -- parent file : c:/data/develop/context/sources/luatex-fonts.lua
--- merge date  : 2021-06-24 18:50
+-- merge date  : 2021-06-24 23:39
 
 do -- begin closure to overcome local limits and interference