texi2pod.pl: If multiple @c man sections with the same tag appear...

	* texi2pod.pl: If multiple @c man sections with the same tag
	appear, concatenate them in the final output.  When skipping,
	ignore block commands that can't cause skipping, and honor
	those that can.  Ensure that verbatim blocks are separate
	paragraphs.

From-SVN: r38117

contrib/ChangeLog

+2000-12-07  Zack Weinberg  <zack@wolery.stanford.edu>
+
+	* texi2pod.pl: If multiple @c man sections with the same tag
+	appear, concatenate them in the final output.  When skipping,
+	ignore block commands that can't cause skipping, and honor
+	those that can.  Ensure that verbatim blocks are separate
+	paragraphs.
+
 2000-12-07  Joseph S. Myers  <jsm28@cam.ac.uk>
 
 	* gcc_update: Don't touch tradcif.c or java/parse.h.

contrib/texi2pod.pl

@@ -65,7 +65,8 @@ while(<STDIN>)
     # would require rev'ing all other Texinfo translators.
     /^\@c man begin ([A-Z]+)/ and $sect = $1, $output = 1, next;
     /^\@c man end/ and do {
-	$sects{$sect} = postprocess($section);
+	$sects{$sect} = "" unless exists $sects{$sect};
+	$sects{$sect} .= postprocess($section);
 	$section = "";
 	$output = 0;
 	next;
@@ -79,22 +80,57 @@ while(<STDIN>)
     # End-block handler goes up here because it needs to operate even
     # if we are skipping.
     /^\@end\s+([a-z]+)/ and do {
-	die "\@end $1 without \@$1 at line $.\n" unless defined $endw;
-	die "\@$endw ended by \@end $1 at line $.\n" unless $1 eq $endw;
+	# 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 && $ended !~ /^(?:ifset|ifclear|ignore|menu)$/;
+
+	die "\@end $ended without \@$ended at line $.\n" unless defined $endw;
+	die "\@$endw ended by \@end $ended at line $.\n" unless $ended eq $endw;
 
 	$endw = pop @endwstack;
 
-	if ($1 =~ /example$/) {
-	    $shift = "";
-	    next;
-	} elsif ($1 =~ /^(if|ignore|menu)/) {
+	if ($ended =~ /^(?:ifset|ifclear|ignore|menu)$/) {
 	    $skipping = pop @skstack;
 	    next;
-	} else {
+	} elsif ($ended =~ /^(?:example|smallexample)$/) {
+	    $shift = "";
+	    $_ = "";	# need a paragraph break
+	} elsif ($ended =~ /^(?:itemize|enumerate|table)$/) {
 	    $_ = "\n=back\n";
 	    $ic = pop @icstack;
+	} else {
+	    die "unknown command \@end $ended at line $.\n";
 	}
     };
+
+    # We must handle commands which can cause skipping even while we
+    # are skipping, otherwise we will not process nested conditionals
+    # correctly.
+    /^\@ifset\s+([a-zA-Z0-9_-]+)/ and do {
+	push @endwstack, $endw;
+	push @skstack, $skipping;
+	$endw = "ifset";
+	$skipping = 1 unless exists $defs{$1};
+	next;
+    };
+
+    /^\@ifclear\s+([a-zA-Z0-9_-]+)/ and do {
+	push @endwstack, $endw;
+	push @skstack, $skipping;
+	$endw = "ifclear";
+	$skipping = 1 if exists $defs{$1};
+	next;
+    };
+
+    /^\@(ignore|menu)\b/ and do {
+	push @endwstack, $endw;
+	push @skstack, $skipping;
+	$endw = $1;
+	$skipping = 1;
+	next;
+    };
+
     next if $skipping;
 
     # Character entities.  First the ones that can be replaced by raw text
@@ -132,30 +168,6 @@ while(<STDIN>)
     /^\@subsection\s+(.+)$/ and $_ = "\n=head3 $1\n";
 
     # Block command handlers:
-    /^\@ifset\s+([a-zA-Z0-9_-]+)/ and do {
-	push @endwstack, $endw;
-	push @skstack, $skipping;
-	$endw = "ifset";
-	$skipping = 1 unless exists $defs{$1};
-	next;
-    };
-
-    /^\@ifclear\s+([a-zA-Z0-9_-]+)/ and do {
-	push @endwstack, $endw;
-	push @skstack, $skipping;
-	$endw = "ifclear";
-	$skipping = 1 if exists $defs{$1};
-	next;
-    };
-
-    /^\@(ignore|menu)\b/ and do {
-	push @endwstack, $endw;
-	push @skstack, $skipping;
-	$endw = $1;
-	$skipping = 1;
-	next;
-    };
-
     /^\@itemize\s+(\@[a-z]+|\*|-)/ and do {
 	push @endwstack, $endw;
 	push @icstack, $ic;
@@ -192,7 +204,7 @@ while(<STDIN>)
 	push @endwstack, $endw;
 	$endw = $1;
 	$shift = "\t";
-	next;
+	$_ = "";	# need a paragraph break
     };
 
     /^\@itemx?\s*(.+)?$/ and do {