Upstream for texinfo does not see the changing headline as a problem, and
they consider it's not really a marker for info file.

So use a different approach (10 is very conservative, largely enough in
practice)


This fixes ports like halibut, for instance.

Can someone commit this ?

Index: FS2.pm
===================================================================
RCS file: /build/data/openbsd/cvs/ports/infrastructure/lib/OpenBSD/FS2.pm,v
diff -u -p -r1.42 FS2.pm
--- FS2.pm	5 Jul 2023 15:07:54 -0000	1.42
+++ FS2.pm	11 Dec 2025 15:47:29 -0000
@@ -345,17 +345,12 @@ sub recognize($class, $filename, $fs, $)
 	return 0 unless $filename =~ m/\.info$/ or $filename =~ m/info\/[^\/]+$/;
 	$filename = $fs->resolve_link($filename);
 	open my $fh, '<', $filename or return 0;
-	my $tag = <$fh>;
-	return 0 unless defined $tag;
-	my $tag2 = <$fh>;
-	$tag .= $tag2 if defined $tag2;
-	close $fh;
-	if ($tag =~ /^This\sis\s.*,\sproduced\sby\sg?[Mm]akeinfo(?:\sversion\s|\-)?.*[\d\s]from/s ||
-	    $tag =~ /^Dies\sist\s.*,\shergestellt\svon\sg?[Mm]akeinfo(?:\sVersion\s|\-)?.*[\d\s]aus/s) {
-		return 1;
-	} else {
-		return 0;
+	while (<$fh>) {
+		chomp;
+		return 1 if m/^START-INFO-DIR-ENTRY$/;
+		last if $. >= 10;
 	}
+	return 0;
 }
 
 sub element_class($)