13 files changed, 172 insertions, 31 deletions
diff --git a/scripts/context/lua/mtxrun.lua b/scripts/context/lua/mtxrun.lua
index f7e7f7822..69293450c 100644
--- a/scripts/context/lua/mtxrun.lua
+++ b/scripts/context/lua/mtxrun.lua
@@ -2575,7 +2575,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["l-os"] = package.loaded["l-os"] or true
 
--- original size: 14418, stripped down to: 8830
+-- original size: 15800, stripped down to: 9551
 
 if not modules then modules={} end modules ['l-os']={
   version=1.001,
@@ -2914,6 +2914,38 @@ if not os.sleep then
     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
@@ -16489,8 +16521,8 @@ 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    : 676625
--- stripped bytes    : 239146
+-- original bytes    : 678007
+-- stripped bytes    : 239807
 
 -- end library merge
 
diff --git a/scripts/context/stubs/mswin/mtxrun.lua b/scripts/context/stubs/mswin/mtxrun.lua
index f7e7f7822..69293450c 100644
--- a/scripts/context/stubs/mswin/mtxrun.lua
+++ b/scripts/context/stubs/mswin/mtxrun.lua
@@ -2575,7 +2575,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["l-os"] = package.loaded["l-os"] or true
 
--- original size: 14418, stripped down to: 8830
+-- original size: 15800, stripped down to: 9551
 
 if not modules then modules={} end modules ['l-os']={
   version=1.001,
@@ -2914,6 +2914,38 @@ if not os.sleep then
     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
@@ -16489,8 +16521,8 @@ 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    : 676625
--- stripped bytes    : 239146
+-- original bytes    : 678007
+-- stripped bytes    : 239807
 
 -- end library merge
 
diff --git a/scripts/context/stubs/unix/mtxrun b/scripts/context/stubs/unix/mtxrun
index f7e7f7822..69293450c 100644
--- a/scripts/context/stubs/unix/mtxrun
+++ b/scripts/context/stubs/unix/mtxrun
@@ -2575,7 +2575,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["l-os"] = package.loaded["l-os"] or true
 
--- original size: 14418, stripped down to: 8830
+-- original size: 15800, stripped down to: 9551
 
 if not modules then modules={} end modules ['l-os']={
   version=1.001,
@@ -2914,6 +2914,38 @@ if not os.sleep then
     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
@@ -16489,8 +16521,8 @@ 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    : 676625
--- stripped bytes    : 239146
+-- original bytes    : 678007
+-- stripped bytes    : 239807
 
 -- end library merge
 
diff --git a/tex/context/base/cont-new.mkiv b/tex/context/base/cont-new.mkiv
index 37c102604..fec4739ad 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{2013.09.18 22:06}
+\newcontextversion{2013.09.19 09:20}
 
 %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 b7288b53d..edd770ee2 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 c73883998..fde3ea3ab 100644
--- a/tex/context/base/context.mkiv
+++ b/tex/context/base/context.mkiv
@@ -25,7 +25,7 @@
 %D up and the dependencies are more consistent.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2013.09.18 22:06}
+\edef\contextversion{2013.09.19 09:20}
 \edef\contextkind   {beta}
 
 %D For those who want to use this:
diff --git a/tex/context/base/core-con.lua b/tex/context/base/core-con.lua
index cb284b9a7..315a34f39 100644
--- a/tex/context/base/core-con.lua
+++ b/tex/context/base/core-con.lua
@@ -216,27 +216,14 @@ function commands.Character (n)   context(chr (n,upper_offset)) end
 function commands.characters(n)   context(chrs(n,lower_offset)) end
 function commands.Characters(n)   context(chrs(n,upper_offset)) end
 
-local days = {
-    [false] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
-    [true]  = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
-}
-
-local function weekday(day,month,year)
-    return date("%w",time{year=year,month=month,day=day}) + 1
-end
-
-local function isleapyear(year)
-    return (year % 400 == 0) or ((year % 100 ~= 0) and (year % 4 == 0))
-end
+local weekday    = os.weekday    -- moved to l-os
+local isleapyear = os.isleapyear -- moved to l-os
+local nofdays    = os.nofdays    -- moved to l-os
 
 local function leapyear(year)
     return isleapyear(year) and 1 or 0
 end
 
-local function nofdays(year,month)
-    return days[isleapyear(year)][month]
-end
-
 local function textime()
     return tonumber(date("%H")) * 60 + tonumber(date("%M"))
 end
@@ -254,7 +241,7 @@ converters.nofdays    = nofdays
 converters.textime    = textime
 
 function commands.weekday (day,month,year) context(weekday (day,month,year)) end
-function commands.leapyear(year)           context(leapyear(year))           end -- rather useless
+function commands.leapyear(year)           context(leapyear(year))           end -- rather useless, only for ifcase
 function commands.nofdays (year,month)     context(nofdays (year,month))     end
 
 function commands.year   () context(date("%Y")) end
diff --git a/tex/context/base/l-os.lua b/tex/context/base/l-os.lua
index 8bfcf786c..7f3fd7caf 100644
--- a/tex/context/base/l-os.lua
+++ b/tex/context/base/l-os.lua
@@ -492,3 +492,60 @@ end
 -- print(os.which("inkscape"))
 -- print(os.which("gs.exe"))
 -- print(os.which("ps2pdf"))
+
+-- These are moved from core-con.lua (as I needed them elsewhere).
+
+local function isleapyear(year)
+    return (year % 400 == 0) or ((year % 100 ~= 0) and (year % 4 == 0))
+end
+
+os.isleapyear = isleapyear
+
+-- nicer:
+--
+-- local days = {
+--     [false] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
+--     [true]  = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
+-- }
+--
+-- local function nofdays(year,month)
+--     return days[isleapyear(year)][month]
+--     return month == 2 and isleapyear(year) and 29 or days[month]
+-- end
+--
+-- more efficient:
+
+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)
+    -- we assume that all three values are set
+    -- year is always ok, even if lua has a 1970 time limit
+    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
diff --git a/tex/context/base/math-noa.lua b/tex/context/base/math-noa.lua
index cd0115c47..f72f568d4 100644
--- a/tex/context/base/math-noa.lua
+++ b/tex/context/base/math-noa.lua
@@ -124,6 +124,7 @@ local right_fence_code    = 3
 
 local function process(start,what,n,parent)
     if n then n = n + 1 else n = 0 end
+    local prev = nil
     while start do
         local id = start.id
         if trace_processing then
diff --git a/tex/context/base/status-files.pdf b/tex/context/base/status-files.pdf
index 0555d1048..22d672c62 100644
--- a/tex/context/base/status-files.pdf
+++ b/tex/context/base/status-files.pdf
diff --git a/tex/context/base/status-lua.log b/tex/context/base/status-lua.log
index 2d1cf1c00..bc318b8ed 100644
--- a/tex/context/base/status-lua.log
+++ b/tex/context/base/status-lua.log
@@ -1,6 +1,6 @@
 (cont-yes.mkiv
 
-ConTeXt  ver: 2013.09.18 22:06 MKIV beta  fmt: 2013.9.18  int: english/english
+ConTeXt  ver: 2013.09.19 09:20 MKIV beta  fmt: 2013.9.19  int: english/english
 
 system          > 'cont-new.mkiv' loaded
 (cont-new.mkiv)
diff --git a/tex/context/base/type-imp-hgz.mkiv b/tex/context/base/type-imp-hgz.mkiv
index a3c2a7841..091adeb2d 100644
--- a/tex/context/base/type-imp-hgz.mkiv
+++ b/tex/context/base/type-imp-hgz.mkiv
@@ -1 +1 @@
-\input type-ghz.mkiv \endinput % can be file synonym
+\input type-imp-ghz.mkiv \endinput % can be file synonym
diff --git a/tex/generic/context/luatex/luatex-fonts-merged.lua b/tex/generic/context/luatex/luatex-fonts-merged.lua
index 7352bc5cb..f8e3e802e 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  : 09/18/13 22:06:17
+-- merge date  : 09/19/13 09:20:57
 
 do -- begin closure to overcome local limits and interference