texdoc

Hi,
"texdoc grfguide" issued the error message "ghostview: command not found".

I do not have ghostview installed but gv.  texdoc offers me to set an
environment variable, such as TEXDOCVIEW_ps='gv %s &'.

It works as expected but I prefer to have this variable set in texmf.cnf.

The following patch calls kpsewhich --expand-var to determine the
viewer, if this fails it uses the default values defined at the top of
the script.

Regards,
  Reinhard


--- texdoc-orig Mon May 10 21:43:34 2004
+++ texdoc      Sun Aug 22 00:25:55 2004
@@ -90,7 +90,9 @@
       echo $filename
     else
       ext=`echo $filename | sed -n 's%.*\.\([^/]*\)$%\1%p'`
-      viewer=\$"TEXDOCVIEW_$ext"
+      default_viewer="\$TEXDOCVIEW_$ext"
+      viewer=`kpsewhich --expand-var="\\$TEXDOCVIEW_$ext"`
+      test -n "$viewer" || viewer=$default_viewer
       viewer=`eval echo $viewer | sed -e "s|%s|$filename|g"`
       if test -z "$viewer"
       then 



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