Cache interwiki prefixes with a canonical case

diff --git a/includes/Title.php b/includes/Title.php
index 3c38f45..5d4b1fd 100644 (file)
--- a/includes/Title.php
+++ b/includes/Title.php
@@ -393,6 +393,8 @@ class Title {
 
                wfProfileIn( $fname );
 
+               $key = strtolower( $key );
+
                $k = $wgDBname.':interwiki:'.$key;
                if( array_key_exists( $k, $wgTitleInterwikiCache ) ) {
                        wfProfileOut( $fname );