From 16d51e67a7e7257739e1cb3f9a3713d448065e5d Mon Sep 17 00:00:00 2001
From: Joey Hess <joey@kodama.kitenet.net>
Date: Fri, 17 Oct 2008 19:53:04 -0400
Subject: [PATCH] add_underlay: avoid adding the same underlay twice

---
 IkiWiki.pm | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/IkiWiki.pm b/IkiWiki.pm
index 633c51381..edee8aacb 100644
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
@@ -681,11 +681,12 @@ sub srcfile ($;$) { #{{{
 sub add_underlay ($) { #{{{
 	my $dir=shift;
 
-	if ($dir=~/^\//) {
-		unshift @{$config{underlaydirs}}, $dir;
+	if ($dir !~ /^\//) {
+		$dir="$config{underlaydir}/../$dir";
 	}
-	else {
-		unshift @{$config{underlaydirs}}, "$config{underlaydir}/../$dir";
+
+	if (! grep { $_ eq $dir } @{$config{underlaydirs}}) {
+		unshift @{$config{underlaydirs}}, $dir;
 	}
 
 	return 1;
-- 
2.26.2