Hello.

I'm using standard 'setuptex' file to set apropriate variables for my
shell. I'd like to suggest small improvement for this file. See
attached patch.

P.S. The real use of this file is in my shell initialization scripts.
It is sourced in specific way so I faced a situation when 'export' is
required. Besides that unsetting unused variables also good habit to
interactive session.

---
WBR, Vladimir Lomov

-- 
Violence is molding.
--- setuptex.orig       2011-09-22 22:36:37.000000000 +0900
+++ setuptex    2011-09-22 22:38:12.000000000 +0900
@@ -148,13 +148,16 @@
        fi
 
 # ConTeXt binaries have to be added to PATH
-TEXMFOS=$TEXROOT/texmf-$platform
-PATH=$TEXMFOS/bin:$PATH
+export TEXMFOS=$TEXROOT/texmf-$platform
+export PATH=$TEXMFOS/bin:$PATH
 # TODO: we could set OSFONTDIR on Mac for example
 
 # not sure why this would be needed
 # export CTXMINIMAL=yes
 
+# unset variables that won't be used lately
+unset platform cpu system OWNPATH SCRIPTPATH ARGPATH
+
 else
        echo "provide a proper tex root (like '. setuptex /something/tex')" ;
 fi
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