From: Joey Hess <joey@kitenet.net>
Date: Wed, 10 Jul 2013 21:40:33 +0000 (-0400)
Subject: optimize for common case where list is not changed
X-Git-Tag: 3.20130710~6
X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/commitdiff_plain/46e0c5742ce2d380904987b8a2655fe157faca3e?ds=sidebyside;hp=d932d5ab00885a9f7bab7644d75a38ad9a4dc48b

optimize for common case where list is not changed
---

diff --git a/IkiWiki/Render.pm b/IkiWiki/Render.pm
index c41dac9f6..58b374ad7 100644
--- a/IkiWiki/Render.pm
+++ b/IkiWiki/Render.pm
@@ -773,7 +773,7 @@ sub refresh () {
 	my %existingfiles;
 	run_hooks(needsbuild => sub {
 		my $ret=shift->($changed, [@$del, @$internal_del]);
-		if (ref $ret eq 'ARRAY') {
+		if (ref $ret eq 'ARRAY' && $ret != $changed) {
 			if (! %existingfiles) {
 				foreach my $f (@$files) {
 					$existingfiles{$f}=1;