From 6c7855038fdbbc204ab96a4a0fdbc7ed735216df Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Sat, 8 Apr 2023 20:08:36 +0000
Subject: [PATCH] viewvcs: avoid uninitialized var on unusable filenames

This happens if somebody uses a bogus filename like `.' for the
`b=' parameter (e.g. GET `$REPO/$OID/?b=.').
---
 lib/PublicInbox/ViewVCS.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/PublicInbox/ViewVCS.pm b/lib/PublicInbox/ViewVCS.pm
index de8600ee1..eb757089c 100644
--- a/lib/PublicInbox/ViewVCS.pm
+++ b/lib/PublicInbox/ViewVCS.pm
@@ -514,7 +514,7 @@ sub solve_result {
 	return show_other($ctx, $res) if $type ne 'blob';
 	my $fn = $di->{path_b} // $hints->{path_b};
 	my $paths = $ctx->{-paths} //= do {
-		my $path = to_filename($fn // 'blob');
+		my $path = to_filename($fn // 'blob') // 'blob';
 		my $raw_more = qq[(<a\nhref="$path">raw</a>)];
 		my @def;
 
-- 
2.47.2