* texi2pod.pl: Skip contents of @copying.

[pf3gnuchains/gcc-fork.git] / contrib / texi2pod.pl

diff --git a/contrib/texi2pod.pl b/contrib/texi2pod.pl
index 4fb8892..d383945 100755 (executable)
--- a/contrib/texi2pod.pl
+++ b/contrib/texi2pod.pl
@@ -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;
@@ -365,14 +365,18 @@ 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;