Patch: turn TEXINPUTS into absolute paths

Hi Karl!

I'd like to suggest something along the lines of the following patch,
to address issues like the one reported in 
 http://mail.gnu.org/pipermail/bug-texinfo/2002-May/005072.html
or in the second part of 
 http://mail.gnu.org/pipermail/bug-texinfo/2002-October/005325.html

The patch is against texinfo-4.2b.

The nice thing is that it will also allow --clean to work when
TEXINPUTS contains relative directories.

2002-10-24  Alexandre Duret-Lutz  <[email protected]>

	* util/texi2dvi: Turn relative entries $TEXINPUTS and $INDEXSTYLE
	into absolute paths.

--- util/texi2dvi	Tue Oct 15 17:37:49 2002
+++ util/texi2dvi	Thu Oct 24 11:51:04 2002
@@ -1,7 +1,7 @@
 #! /bin/sh
 # texi2dvi --- produce DVI (or PDF) files from Texinfo (or LaTeX) sources.
 # $Id: texi2dvi,v 1.4 2002/10/15 15:37:49 karl Exp $
-# 
+#
 # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2001,
 # 2002 Free Software Foundation, Inc.
 #
@@ -105,6 +105,9 @@
   path_sep=":"
 fi
 
+# Pacify verbose cds.
+CDPATH=${ZSH_VERSION+.}$path_sep
+
 # Save this so we can construct a new TEXINPUTS path for each file.
 TEXINPUTS_orig="$TEXINPUTS"
 # Unfortunately makeindex does not read TEXINPUTS.
@@ -346,15 +349,33 @@
   # Make all those directories and give up if we can't succeed.
   mkdir $tmpdir_src $tmpdir_xtr $tmpdir_bak || exit 1
 
-  # Source file might include additional sources.  Put `.' and
-  # directory where source file(s) reside in TEXINPUTS before anything
-  # else.  `.' goes first to ensure that any old .aux, .cps,
+  # Source file might include additional sources.
+  # We want `.:$orig_pwd' before anything else.  (We'll add `.:' later
+  # after all other directories have been turned into absolute paths.)
+  # `.' goes first to ensure that any old .aux, .cps,
   # etc. files in ${directory} don't get used in preference to fresher
   # files in `.'.  Include orig_pwd in case we are in clean mode, where
   # we've cd'd to a temp directory.
-  common=".$path_sep$orig_pwd$path_sep$filename_dir$path_sep$txincludes"
-   TEXINPUTS="$common$TEXINPUTS_orig:"
+  common="$orig_pwd$path_sep$filename_dir$path_sep$txincludes"
+   TEXINPUTS="$common$TEXINPUTS_orig"
   INDEXSTYLE="$common$INDEXSTYLE_orig"
+
+  # Convert relative paths to absolute paths, so we can run in another
+  # directory (e.g., in --clean mode, or during the macro-support
+  # detection.)
+  save_IFS=$IFS
+  IFS=$path_sep
+  set x $TEXINPUTS; shift
+  TEXINPUTS=.
+  for dir; do
+    abs=`cd "$dir" && pwd` && TEXINPUTS=$TEXINPUTS$path_sep$abs
+  done
+  set x $INDEXSTYLE; shift
+  INDEXSTYLE=.
+  for dir; do
+    abs=`cd "$dir" && pwd` && INDEXSTYLE=$INDEXSTYLE$path_sep$abs
+  done
+  IFS=$save_IFS
 
   # If the user explicitly specified the language, use that.
   # Otherwise, if the first line is \input texinfo, assume it's texinfo.

-- 
Alexandre Duret-Lutz