beta 2013.03.22 22:21

5 files changed, 345 insertions, 207 deletions

diff --git a/scripts/context/lua/mtx-context.lua b/scripts/context/lua/mtx-context.lua
index 1035267e0..3fa4a094c 100644
--- a/scripts/context/lua/mtx-context.lua
+++ b/scripts/context/lua/mtx-context.lua
@@ -19,198 +19,11 @@ local lpegpatterns, lpegmatch, Cs, P = lpeg.patterns, lpeg.match, lpeg.Cs, lpeg.
 local getargument = environment.getargument or environment.argument
 local setargument = environment.setargument
 
-local helpinfo = [[
-<?xml version="1.0" ?>
-<application>
- <metadata>
-  <entry name="name">mtx-context</entry>
-  <entry name="detail">ConTeXt Process Management</entry>
-  <entry name="version">0.60</entry>
- </metadata>
- <flags>
-  <category name="basic">
-   <subcategory>
-    <flag name="run">
-     <short>process (one or more) files (default action)</short>
-    </flag>
-    <flag name="make">
-     <short>create context formats</short>
-    </flag>
-   </subcategory>
-   <subcategory>
-    <flag name="ctx=name">
-     <short>use ctx file (process management specification)</short>
-    </flag>
-    <flag name="interface">
-     <short>use specified user interface (default: en)</short>
-    </flag>
-   </subcategory>
-   <subcategory>
-    <flag name="autopdf">
-     <short>close pdf file in viewer and start pdf viewer afterwards</short>
-    </flag>
-    <flag name="purge">
-     <short>purge files either or not after a run (<ref name="pattern"/>=...)</short>
-    </flag>
-    <flag name="purgeall">
-     <short>purge all files either or not after a run (<ref name="pattern"/>=...)</short>
-    </flag>
-   </subcategory>
-   <subcategory>
-    <flag name="usemodule" value="list">
-     <short>load the given module or style, normally part of the distribution</short>
-    </flag>
-    <flag name="environment" value="list">
-     <short>load the given environment file first (document styles)</short>
-    </flag>
-    <flag name="mode" value="list">
-     <short>enable given the modes (conditional processing in styles)</short>
-    </flag>
-    <flag name="path" value="list">
-     <short>also consult the given paths when files are looked for</short>
-    </flag>
-    <flag name="arguments" value="list">
-     <short>set variables that can be consulted during a run (key/value pairs)</short>
-    </flag>
-    <flag name="randomseed" value="number">
-     <short>set the randomseed</short>
-    </flag>
-    <flag name="result" value="name">
-     <short>rename the resulting output to the given name</short>
-    </flag>
-    <flag name="trackers" value="list">
-     <short>set tracker variables (show list with <ref name="showtrackers"/>)</short>
-    </flag>
-    <flag name="directives" value="list">
-     <short>set directive variables (show list with <ref name="showdirectives"/>)</short>
-    </flag>
-    <flag name="silent" value="list">
-     <short>disable logcatgories (show list with <ref name="showlogcategories"/>)</short>
-    </flag>
-    <flag name="noconsole">
-     <short>disable logging to the console (logfile only)</short>
-    </flag>
-    <flag name="purgeresult">
-     <short>purge result file before run</short>
-    </flag>
-   </subcategory>
-   <subcategory>
-    <flag name="forcexml">
-     <short>force xml stub</short>
-    </flag>
-    <flag name="forcecld">
-     <short>force cld (context lua document) stub</short>
-    </flag>
-    <flag name="forcelua">
-     <short>force lua stub (like texlua)</short>
-    </flag>
-    <flag name="forcemp">
-     <short>force mp stub</short>
-    </flag>
-   </subcategory>
-   <subcategory>
-    <flag name="arrange">
-     <short>run extra imposition pass, given that the style sets up imposition</short>
-    </flag>
-    <flag name="noarrange">
-     <short>ignore imposition specifications in the style</short>
-    </flag>
-   </subcategory>
-   <subcategory>
-    <flag name="jit">
-     <short>use luajittex with jit turned off (only use the faster virtual machine)</short>
-    </flag>
-    <flag name="jiton">
-     <short>use luajittex with jit turned on (in most cases not faster, even slower)</short>
-    </flag>
-   </subcategory>
-   <subcategory>
-    <flag name="once">
-     <short>only run once (no multipass data file is produced)</short>
-    </flag>
-    <flag name="batchmode">
-     <short>run without stopping and do not show messages on the console</short>
-    </flag>
-    <flag name="nonstopmode">
-     <short>run without stopping</short>
-    </flag>
-    <flag name="synctex">
-     <short>run with synctex enabled (optional value: zipped, unzipped, 1, -1)</short>
-    </flag>
-   </subcategory>
-   <subcategory>
-    <flag name="generate">
-     <short>generate file database etc. (as luatools does)</short>
-    </flag>
-    <flag name="paranoid">
-     <short>do not descend to .. and ../..</short>
-    </flag>
-    <flag name="version">
-     <short>report installed context version</short>
-    </flag>
-   </subcategory>
-   <subcategory>
-    <flag name="global">
-     <short>assume given file present elsewhere</short>
-    </flag>
-    <flag name="nofile">
-      <short>use dummy file as jobname</short>
-    </flag>
-   </subcategory>
-  </category>
-  <category name="expert">
-   <subcategory>
-    <flag name="touch">
-     <short>update context version number (remake needed afterwards, also provide <ref name="expert"/>)</short>
-    </flag>
-    <flag name="nostatistics">
-     <short>omit runtime statistics at the end of the run</short>
-    </flag>
-    <flag name="update">
-     <short>update context from website (not to be confused with contextgarden)</short>
-    </flag>
-    <flag name="profile">
-     <short>profile job (use: mtxrun <ref name="script"/> profile <ref name="analyze"/>)</short>
-    </flag>
-    <flag name="timing">
-     <short>generate timing and statistics overview</short>
-    </flag>
-   </subcategory>
-   <subcategory>
-    <flag name="extra=name">
-     <short>process extra (mtx-context-... in distribution)</short>
-    </flag>
-    <flag name="extras">
-     <short>show extras</short>
-    </flag>
-   </subcategory>
-  </category>
-  <category name="special">
-   <subcategory>
-    <flag name="pdftex">
-     <short>process file with texexec using pdftex</short>
-    </flag>
-    <flag name="xetex">
-     <short>process file with texexec using xetex</short>
-    </flag>
-    <flag name="mkii">
-     <short>process file with texexec</short>
-    </flag>
-   </subcategory>
-   <subcategory>
-    <flag name="pipe">
-     <short>do not check for file and enter scroll mode (<ref name="dummyfile"/>=whatever.tmp)</short>
-    </flag>
-   </subcategory>
-  </category>
- </flags>
-</application>
-]]
-
 local application = logs.application {
     name     = "mtx-context",
     banner   = "ConTeXt Process Management 0.60",
-    helpinfo = helpinfo,
+ -- helpinfo = helpinfo, -- table with { category_a = text_1, category_b = text_2 } or helpstring or xml_blob
+    helpinfo = "mtx-context.xml",
 }
 
 -- local luatexflags = {
diff --git a/scripts/context/lua/mtx-context.xml b/scripts/context/lua/mtx-context.xml
new file mode 100644
index 000000000..6eb8afeb1
--- /dev/null
+++ b/scripts/context/lua/mtx-context.xml
@@ -0,0 +1,187 @@
+<?xml version="1.0" ?>
+
+<application>
+    <metadata>
+        <entry name="name">mtx-context</entry>
+        <entry name="detail">ConTeXt Process Management</entry>
+        <entry name="version">0.60</entry>
+        <entry name="comment">external helpinfo file</entry>
+    </metadata>
+    <flags>
+        <category name="basic">
+            <subcategory>
+                <flag name="run">
+                    <short>process (one or more) files (default action)</short>
+                </flag>
+                <flag name="make">
+                    <short>create context formats</short>
+                </flag>
+            </subcategory>
+            <subcategory>
+                <flag name="ctx=name">
+                    <short>use ctx file (process management specification)</short>
+                </flag>
+                <flag name="interface">
+                    <short>use specified user interface (default: en)</short>
+                </flag>
+            </subcategory>
+            <subcategory>
+                <flag name="autopdf">
+                    <short>close pdf file in viewer and start pdf viewer afterwards</short>
+                </flag>
+                <flag name="purge">
+                    <short>purge files either or not after a run (<ref name="pattern"/>=...)</short>
+                </flag>
+                <flag name="purgeall">
+                    <short>purge all files either or not after a run (<ref name="pattern"/>=...)</short>
+                </flag>
+            </subcategory>
+            <subcategory>
+                <flag name="usemodule" value="list">
+                    <short>load the given module or style, normally part of the distribution</short>
+                </flag>
+                <flag name="environment" value="list">
+                    <short>load the given environment file first (document styles)</short>
+                </flag>
+                <flag name="mode" value="list">
+                    <short>enable given the modes (conditional processing in styles)</short>
+                </flag>
+                    <flag name="path" value="list">
+                <short>also consult the given paths when files are looked for</short>
+                </flag>
+                    <flag name="arguments" value="list">
+                <short>set variables that can be consulted during a run (key/value pairs)</short>
+                </flag>
+                    <flag name="randomseed" value="number">
+                <short>set the randomseed</short>
+                </flag>
+                    <flag name="result" value="name">
+                <short>rename the resulting output to the given name</short>
+                </flag>
+                    <flag name="trackers" value="list">
+                <short>set tracker variables (show list with <ref name="showtrackers"/>)</short>
+                </flag>
+                <flag name="directives" value="list">
+                    <short>set directive variables (show list with <ref name="showdirectives"/>)</short>
+                </flag>
+                <flag name="silent" value="list">
+                    <short>disable logcatgories (show list with <ref name="showlogcategories"/>)</short>
+                </flag>
+                <flag name="noconsole">
+                    <short>disable logging to the console (logfile only)</short>
+                </flag>
+                <flag name="purgeresult">
+                    <short>purge result file before run</short>
+                </flag>
+            </subcategory>
+            <subcategory>
+                <flag name="forcexml">
+                    <short>force xml stub</short>
+                </flag>
+                <flag name="forcecld">
+                    <short>force cld (context lua document) stub</short>
+                </flag>
+                <flag name="forcelua">
+                    <short>force lua stub (like texlua)</short>
+                </flag>
+                <flag name="forcemp">
+                    <short>force mp stub</short>
+                </flag>
+            </subcategory>
+            <subcategory>
+                <flag name="arrange">
+                    <short>run extra imposition pass, given that the style sets up imposition</short>
+                </flag>
+                <flag name="noarrange">
+                    <short>ignore imposition specifications in the style</short>
+                </flag>
+            </subcategory>
+            <subcategory>
+                <flag name="jit">
+                    <short>use luajittex with jit turned off (only use the faster virtual machine)</short>
+                </flag>
+                <flag name="jiton">
+                    <short>use luajittex with jit turned on (in most cases not faster, even slower)</short>
+                </flag>
+            </subcategory>
+            <subcategory>
+                <flag name="once">
+                    <short>only run once (no multipass data file is produced)</short>
+                </flag>
+                <flag name="batchmode">
+                    <short>run without stopping and do not show messages on the console</short>
+                </flag>
+                <flag name="nonstopmode">
+                    <short>run without stopping</short>
+                </flag>
+                <flag name="synctex">
+                    <short>run with synctex enabled (optional value: zipped, unzipped, 1, -1)</short>
+                </flag>
+            </subcategory>
+            <subcategory>
+                <flag name="generate">
+                    <short>generate file database etc. (as luatools does)</short>
+                </flag>
+                <flag name="paranoid">
+                    <short>do not descend to .. and ../..</short>
+                </flag>
+                <flag name="version">
+                    <short>report installed context version</short>
+                </flag>
+                </subcategory>
+                <subcategory>
+                <flag name="global">
+                    <short>assume given file present elsewhere</short>
+                </flag>
+                    <flag name="nofile">
+                <short>use dummy file as jobname</short>
+                </flag>
+            </subcategory>
+        </category>
+        <category name="expert">
+            <subcategory>
+                <flag name="touch">
+                    <short>update context version number (remake needed afterwards, also provide <ref name="expert"/>)</short>
+                </flag>
+                    <flag name="nostatistics">
+                <short>omit runtime statistics at the end of the run</short>
+                </flag>
+                    <flag name="update">
+                <short>update context from website (not to be confused with contextgarden)</short>
+                </flag>
+                    <flag name="profile">
+                <short>profile job (use: mtxrun <ref name="script"/> profile <ref name="analyze"/>)</short>
+                </flag>
+                    <flag name="timing">
+                <short>generate timing and statistics overview</short>
+                </flag>
+            </subcategory>
+            <subcategory>
+                <flag name="extra=name">
+                    <short>process extra (mtx-context-... in distribution)</short>
+                </flag>
+                <flag name="extras">
+                    <short>show extras</short>
+                </flag>
+            </subcategory>
+        </category>
+        <category name="special">
+            <subcategory>
+                <flag name="pdftex">
+                    <short>process file with texexec using pdftex</short>
+                </flag>
+                <flag name="xetex">
+                    <short>process file with texexec using xetex</short>
+                </flag>
+                <flag name="mkii">
+                    <short>process file with texexec</short>
+                </flag>
+            </subcategory>
+            <subcategory>
+                <flag name="pipe">
+                    <short>do not check for file and enter scroll mode (<ref name="dummyfile"/>=whatever.tmp)</short>
+                </flag>
+            </subcategory>
+        </category>
+    </flags>
+</application>
diff --git a/scripts/context/lua/mtxrun.lua b/scripts/context/lua/mtxrun.lua
index e8de4ee70..0207724dd 100644
--- a/scripts/context/lua/mtxrun.lua
+++ b/scripts/context/lua/mtxrun.lua
@@ -11168,7 +11168,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["trac-xml"] = package.loaded["trac-xml"] or true
 
--- original size: 4104, stripped down to: 3380
+-- original size: 5959, stripped down to: 4592
 
 if not modules then modules={} end modules ['trac-xml']={
   version=1.001,
@@ -11241,9 +11241,41 @@ local function showhelp(specification,...)
 end
 local reporthelp=reporters.help
 local exporthelp=reporters.export
-function reporters.help(t,...)
+local function xmlfound(t)
   local helpinfo=t.helpinfo
-  if type(helpinfo)=="string" and string.find(helpinfo,"^<%?xml") then
+  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,...)
@@ -11251,16 +11283,30 @@ function reporters.help(t,...)
 end
 local exporters=logs.exporters
 function reporters.export(t,method,filename)
+  if not xmlfound(t) then
+    return exporthelp(t)
+  end
   dofile(resolvers.findfile("trac-exp.lua","tex"))
   if not exporters or not method then
     return exporthelp(t)
   end
+  if not method or method=="" then
+    method=environment.argument["exporthelp"]
+  end
+  if not filename or filename=="" then
+    filename=environment.files[1]
+  end
   if method=="all" then
     method=table.keys(exporters)
   else
     method={ method }
   end
-  filename=type(filename)=="string" and filename~="" and filename or false
+  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=false
+  end
   for i=1,#method do
     local m=method[i]
     local result=exporters[m](t,m)
@@ -15525,8 +15571,8 @@ end -- of closure
 
 -- used libraries    : l-lua.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-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 luat-sta.lua luat-fmt.lua
 -- skipped libraries : -
--- original bytes    : 642686
--- stripped bytes    : 233038
+-- original bytes    : 644541
+-- stripped bytes    : 233681
 
 -- end library merge
 
diff --git a/scripts/context/stubs/mswin/mtxrun.lua b/scripts/context/stubs/mswin/mtxrun.lua
index e8de4ee70..0207724dd 100644
--- a/scripts/context/stubs/mswin/mtxrun.lua
+++ b/scripts/context/stubs/mswin/mtxrun.lua
@@ -11168,7 +11168,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["trac-xml"] = package.loaded["trac-xml"] or true
 
--- original size: 4104, stripped down to: 3380
+-- original size: 5959, stripped down to: 4592
 
 if not modules then modules={} end modules ['trac-xml']={
   version=1.001,
@@ -11241,9 +11241,41 @@ local function showhelp(specification,...)
 end
 local reporthelp=reporters.help
 local exporthelp=reporters.export
-function reporters.help(t,...)
+local function xmlfound(t)
   local helpinfo=t.helpinfo
-  if type(helpinfo)=="string" and string.find(helpinfo,"^<%?xml") then
+  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,...)
@@ -11251,16 +11283,30 @@ function reporters.help(t,...)
 end
 local exporters=logs.exporters
 function reporters.export(t,method,filename)
+  if not xmlfound(t) then
+    return exporthelp(t)
+  end
   dofile(resolvers.findfile("trac-exp.lua","tex"))
   if not exporters or not method then
     return exporthelp(t)
   end
+  if not method or method=="" then
+    method=environment.argument["exporthelp"]
+  end
+  if not filename or filename=="" then
+    filename=environment.files[1]
+  end
   if method=="all" then
     method=table.keys(exporters)
   else
     method={ method }
   end
-  filename=type(filename)=="string" and filename~="" and filename or false
+  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=false
+  end
   for i=1,#method do
     local m=method[i]
     local result=exporters[m](t,m)
@@ -15525,8 +15571,8 @@ end -- of closure
 
 -- used libraries    : l-lua.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-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 luat-sta.lua luat-fmt.lua
 -- skipped libraries : -
--- original bytes    : 642686
--- stripped bytes    : 233038
+-- original bytes    : 644541
+-- stripped bytes    : 233681
 
 -- end library merge
 
diff --git a/scripts/context/stubs/unix/mtxrun b/scripts/context/stubs/unix/mtxrun
index e8de4ee70..0207724dd 100644
--- a/scripts/context/stubs/unix/mtxrun
+++ b/scripts/context/stubs/unix/mtxrun
@@ -11168,7 +11168,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["trac-xml"] = package.loaded["trac-xml"] or true
 
--- original size: 4104, stripped down to: 3380
+-- original size: 5959, stripped down to: 4592
 
 if not modules then modules={} end modules ['trac-xml']={
   version=1.001,
@@ -11241,9 +11241,41 @@ local function showhelp(specification,...)
 end
 local reporthelp=reporters.help
 local exporthelp=reporters.export
-function reporters.help(t,...)
+local function xmlfound(t)
   local helpinfo=t.helpinfo
-  if type(helpinfo)=="string" and string.find(helpinfo,"^<%?xml") then
+  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,...)
@@ -11251,16 +11283,30 @@ function reporters.help(t,...)
 end
 local exporters=logs.exporters
 function reporters.export(t,method,filename)
+  if not xmlfound(t) then
+    return exporthelp(t)
+  end
   dofile(resolvers.findfile("trac-exp.lua","tex"))
   if not exporters or not method then
     return exporthelp(t)
   end
+  if not method or method=="" then
+    method=environment.argument["exporthelp"]
+  end
+  if not filename or filename=="" then
+    filename=environment.files[1]
+  end
   if method=="all" then
     method=table.keys(exporters)
   else
     method={ method }
   end
-  filename=type(filename)=="string" and filename~="" and filename or false
+  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=false
+  end
   for i=1,#method do
     local m=method[i]
     local result=exporters[m](t,m)
@@ -15525,8 +15571,8 @@ end -- of closure
 
 -- used libraries    : l-lua.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-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 luat-sta.lua luat-fmt.lua
 -- skipped libraries : -
--- original bytes    : 642686
--- stripped bytes    : 233038
+-- original bytes    : 644541
+-- stripped bytes    : 233681
 
 -- end library merge