From a6d19f4cd4da71db2383f5828bbb5f7a0cc1f982 Mon Sep 17 00:00:00 2001
From: Bob Wilson <bob.wilson@acm.org>
Date: Fri, 21 Oct 2005 18:08:07 +0000
Subject: [PATCH] 	* texi2pod.pl: Import latest version from GCC.

---
 etc/ChangeLog   |  4 ++++
 etc/texi2pod.pl | 49 ++++++++++++++++++++++++++++++++-----------------
 2 files changed, 36 insertions(+), 17 deletions(-)

diff --git a/etc/ChangeLog b/etc/ChangeLog
index 802f6868e..96794ff1c 100644
--- a/etc/ChangeLog
+++ b/etc/ChangeLog
@@ -1,3 +1,7 @@
+2005-10-21  Bob Wilson  <bob.wilson@acm.org>
+
+	* texi2pod.pl: Import latest version from GCC.
+
 2005-05-19  Zack Weinberg  <zack@codesourcery.com>
 
 	* Makefile.in: Have 'all' depend on 'info'.
diff --git a/etc/texi2pod.pl b/etc/texi2pod.pl
index bdc20e811..49953d4f2 100644
--- a/etc/texi2pod.pl
+++ b/etc/texi2pod.pl
@@ -1,23 +1,23 @@
 #! /usr/bin/perl -w
 
-#   Copyright (C) 1999, 2000, 2001, 200 Free Software Foundation, Inc.
+#   Copyright (C) 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
 
-# This file is part of GNU CC.
+# This file is part of GCC.
 
-# GNU CC is free software; you can redistribute it and/or modify
+# GCC is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2, or (at your option)
 # any later version.
 
-# GNU CC is distributed in the hope that it will be useful,
+# GCC is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 
 # You should have received a copy of the GNU General Public License
-# along with GNU CC; see the file COPYING.  If not, write to
-# the Free Software Foundation, 59 Temple Place - Suite 330,
-# Boston MA 02111-1307, USA.
+# along with GCC; see the file COPYING.  If not, write to
+# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+# Boston MA 02110-1301, USA.
 
 # This does trivial (and I mean _trivial_) conversion of Texinfo
 # markup to Perl POD format.  It's intended to be used to extract
@@ -138,7 +138,7 @@ while(<$inf>) {
 	# Ignore @end foo, where foo is not an operation which may
 	# cause us to skip, if we are presently skipping.
 	my $ended = $1;
-	next if $skipping && $ended !~ /^(?:ifset|ifclear|ignore|menu|iftex)$/;
+	next if $skipping && $ended !~ /^(?:ifset|ifclear|ignore|menu|iftex|copying)$/;
 
 	die "\@end $ended without \@$ended at line $.\n" unless defined $endw;
 	die "\@$endw ended by \@end $ended at line $.\n" unless $ended eq $endw;
@@ -178,7 +178,7 @@ while(<$inf>) {
 	next;
     };
 
-    /^\@(ignore|menu|iftex)\b/ and do {
+    /^\@(ignore|menu|iftex|copying)\b/ and do {
 	push @endwstack, $endw;
 	push @skstack, $skipping;
 	$endw = $1;
@@ -241,10 +241,14 @@ while(<$inf>) {
 	and $_ = "\n=head3 $1\n";
 
     # Block command handlers:
-    /^\@itemize\s+(\@[a-z]+|\*|-)/ and do {
+    /^\@itemize(?:\s+(\@[a-z]+|\*|-))?/ and do {
 	push @endwstack, $endw;
 	push @icstack, $ic;
-	$ic = $1;
+	if (defined $1) {
+	    $ic = $1;
+	} else {
+	    $ic = '@bullet';
+	}
 	$_ = "\n=over 4\n";
 	$endw = "itemize";
     };
@@ -345,6 +349,13 @@ sub postprocess
     s/\@w\{([^\}]*)\}/S<$1>/g;
     s/\@(?:dmn|math)\{([^\}]*)\}/$1/g;
 
+    # keep references of the form @ref{...}, print them bold
+    s/\@(?:ref)\{([^\}]*)\}/B<$1>/g;
+
+    # Change double single quotes to double quotes.
+    s/''/"/g;
+    s/``/"/g;
+
     # Cross references are thrown away, as are @noindent and @refill.
     # (@noindent is impossible in .pod, and @refill is unnecessary.)
     # @* is also impossible in .pod; we discard it and any newline that
@@ -365,14 +376,18 @@ sub postprocess
     s/\@uref\{([^\},]*),([^\},]*)\}/$2 (C<$1>)/g;
     s/\@uref\{([^\},]*),([^\},]*),([^\},]*)\}/$3/g;
 
-    # Turn B<blah I<blah> blah> into B<blah> I<blah> B<blah> to
-    # match Texinfo semantics of @emph inside @samp.  Also handle @r
-    # inside bold.
+    # Un-escape <> at this point.
     s/&LT;/</g;
     s/&GT;/>/g;
-    1 while s/B<((?:[^<>]|I<[^<>]*>)*)R<([^>]*)>/B<$1>${2}B</g;
-    1 while (s/B<([^<>]*)I<([^>]+)>/B<$1>I<$2>B</g);
-    1 while (s/I<([^<>]*)B<([^>]+)>/I<$1>B<$2>I</g);
+
+    # Now un-nest all B<>, I<>, R<>.  Theoretically we could have
+    # indefinitely deep nesting; in practice, one level suffices.
+    1 while s/([BIR])<([^<>]*)([BIR])<([^<>]*)>/$1<$2>$3<$4>$1</g;
+
+    # Replace R<...> with bare ...; eliminate empty markup, B<>;
+    # shift white space at the ends of [BI]<...> expressions outside
+    # the expression.
+    s/R<([^<>]*)>/$1/g;
     s/[BI]<>//g;
     s/([BI])<(\s+)([^>]+)>/$2$1<$3>/g;
     s/([BI])<([^>]+?)(\s+)>/$1<$2>$3/g;