1 files changed, 35 insertions, 6 deletions

diff --git a/gnu/usr.bin/perl/autodoc.pl b/gnu/usr.bin/perl/autodoc.pl
index 6a2e28bfe83..5317bc6da1c 100644
--- a/gnu/usr.bin/perl/autodoc.pl
+++ b/gnu/usr.bin/perl/autodoc.pl
@@ -8,6 +8,7 @@ BEGIN {
   require 'regen_lib.pl';
 }
 
+use strict;
 
 #
 # See database of global and static function prototypes in embed.fnc
@@ -65,6 +66,7 @@ sub walk_table (&@) {
 my %apidocs;
 my %gutsdocs;
 my %docfuncs;
+my %seenfuncs;
 
 my $curheader = "Unknown section";
 
@@ -143,6 +145,27 @@ removed without notice.\n\n" if $flags =~ /x/;
     print $fh "=for hackers\nFound in file $file\n\n";
 }
 
+sub readonly_header (*) {
+    my $fh = shift;
+    print $fh <<"_EOH_";
+-*- buffer-read-only: t -*-
+
+!!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
+This file is built by $0 extracting documentation from the C source
+files.
+
+_EOH_
+}
+
+sub readonly_footer (*) {
+    my $fh = shift;
+    print $fh <<'_EOF_';
+=cut
+
+ ex: set ro:
+_EOF_
+}
+
 my $file;
 # glob() picks up docs from extra .c or .h files that may be in unclean
 # development trees.
@@ -164,26 +187,27 @@ open (DOC, ">pod/perlapi.pod") or
 	die "Can't create pod/perlapi.pod: $!\n";
 binmode DOC;
 
-walk_table {	# load documented functions into approriate hash
+walk_table {	# load documented functions into appropriate hash
     if (@_ > 1) {
 	my($flags, $retval, $func, @args) = @_;
 	return "" unless $flags =~ /d/;
 	$func =~ s/\t//g; $flags =~ s/p//; # clean up fields from embed.pl
 	$retval =~ s/\t//;
 	my $docref = delete $docfuncs{$func};
+	$seenfuncs{$func} = 1;
 	if ($docref and @$docref) {
 	    if ($flags =~ /A/) {
 		$docref->[0].="x" if $flags =~ /M/;
-		$apidocs{$docref->[4]}{$func} = 
-		    [$docref->[0] . 'A', $docref->[1], $retval,
-		    				$docref->[3], @args];
+		$apidocs{$docref->[4]}{$func} =
+		    [$docref->[0] . 'A', $docref->[1], $retval, $docref->[3],
+			@args];
 	    } else {
-		$gutsdocs{$docref->[4]}{$func} = 
+		$gutsdocs{$docref->[4]}{$func} =
 		    [$docref->[0], $docref->[1], $retval, $docref->[3], @args];
 	    }
 	}
 	else {
-	    warn "no docs for $func\n" unless $docref and @$docref;
+	    warn "no docs for $func\n" unless $seenfuncs{$func};
 	}
     }
     return "";
@@ -195,6 +219,8 @@ for (sort keys %docfuncs) {
     warn "Unable to place $_!\n";
 }
 
+readonly_header(\*DOC);
+
 print DOC <<'_EOB_';
 =head1 NAME
 
@@ -252,6 +278,7 @@ perlguts(1), perlxs(1), perlxstut(1), perlintern(1)
 
 _EOE_
 
+readonly_footer(\*DOC);
 
 close(DOC) or die "Error closing pod/perlapi.pod: $!";
 
@@ -259,6 +286,7 @@ safer_unlink "pod/perlintern.pod";
 open(GUTS, ">pod/perlintern.pod") or
 		die "Unable to create pod/perlintern.pod: $!\n";
 binmode GUTS;
+readonly_header(\*GUTS);
 print GUTS <<'END';
 =head1 NAME
 
@@ -297,5 +325,6 @@ document their functions.
 perlguts(1), perlapi(1)
 
 END
+readonly_footer(\*GUTS);
 
 close GUTS or die "Error closing pod/perlintern.pod: $!";