[luatex] Calling texlua from texlua, with a space in the tex binary path

[Reinhard Kotucha]

On 2014-11-01 at 12:29:29 +0100, Siep Kroonenberg wrote:

 > I am investigating this in connection with my epspdf texlua script,
 > which calls luatex at some point. A user who had installed miktex
 > under Program Files ran into a problem. When I ran my test suite --
 > another texlua script -- I ran into more problems.
 > 
 > So I wrote a texlua test script which calls another texlua script in
 > the same directory and ran it with portable miktex, with TL/linux
 > and with TL/w32. Note that TL is portable out of the box in all
 > respects that matter here. None has its binaries on the searchpath.

Hi Siep,
I must admit that I don't know what you mean with "None has its
binaries on the searchpath.".  LuaTeX has to be in PATH, otherwise the
shebang line

  #!/usr/bin/env texlua

wouldn't work.

When I apply the patch below to your script I see that the line

  os.setenv('PATH', os.selfdir..pathsep..os.getenv('PATH'))

adds something to PATH which exists there already.


PATH[1]: 	/home/reinhard/bin/prepend
PATH[2]: 	/opt/gs/9.15/bin
PATH[3]: 	/usr/local/texlive/2014/bin/x86_64-linux
PATH[4]: 	/usr/local/bin
PATH[5]: 	/usr/bin
PATH[6]: 	/bin
PATH[7]: 	/opt/bin
PATH[8]: 	/usr/x86_64-pc-linux-gnu/gcc-bin/4.5.4
PATH[9]: 	/usr/games/bin
PATH[10]: 	/home/reinhard/bin
PATH[11]: 	/usr/local/speedata-publisher/bin

prepending "/usr/local/texlive/2014/bin/x86_64-linux" (os.selfdir) to PATH

PATH[1]: 	/usr/local/texlive/2014/bin/x86_64-linux
PATH[2]: 	/home/reinhard/bin/prepend
PATH[3]: 	/opt/gs/9.15/bin
PATH[4]: 	/usr/local/texlive/2014/bin/x86_64-linux
PATH[5]: 	/usr/local/bin
PATH[6]: 	/usr/bin
PATH[7]: 	/bin
PATH[8]: 	/opt/bin
PATH[9]: 	/usr/x86_64-pc-linux-gnu/gcc-bin/4.5.4
PATH[10]: 	/usr/games/bin
PATH[11]: 	/home/reinhard/bin
PATH[12]: 	/usr/local/speedata-publisher/bin

There is no reason to have /usr/local/texlive/2014/bin/x86_64-linux
twice in PATH.  If you apply my patch, what do you get on Windows?

Regards,
  Reinhard



--- tlu_caller.tlu-siepo	2014-11-01 11:57:53.000000000 +0100
+++ tlu_caller.tlu	2014-11-01 23:29:20.000000000 +0100
@@ -16,6 +16,16 @@
   io.read()
 end
 
+function show_path(pathsep)
+  local PATH=os.getenv('PATH')
+  local path = string.explode(PATH, pathsep)
+  print() -- insert \n.
+  for i,v in ipairs(path) do
+    print ('PATH['..i..']: ', v)
+  end
+  print()
+end
+
 dirsep = (os.type=='unix' and '/') or '\\'
 pathsep = (os.type=='unix' and ':') or ';'
 
@@ -45,7 +55,10 @@
 os.spawn({otherprog, '--version'})
 --]]
 
+show_path(pathsep)
+print ('prepending "'..os.selfdir..'" (os.selfdir) to PATH')
 os.setenv('PATH', os.selfdir..pathsep..os.getenv('PATH'))
+show_path(pathsep)
 
 next_test()
 
@@ -64,3 +77,10 @@
 os.spawn({luabare, '--version'})
 os.spawn({otherbare, '--version'})
 --]]
+
+-- Local Variables:
+--  lua-indent-level: 2
+--  tab-width: 2
+--  indent-tabs-mode: nil
+-- End:
+-- vim:set tabstop=2 expandtab: #