From 21cc27b14a0d30d87f7820f88e5c7dc405f0a1ee Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@users.mediawiki.org>
Date: Sat, 27 Nov 2004 09:03:16 +0000
Subject: [PATCH] Slight adjustment to self-interwiki fix: disallow empty title
 links

---
 includes/Title.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/includes/Title.php b/includes/Title.php
index 7615050152..435c5349ac 100644
--- a/includes/Title.php
+++ b/includes/Title.php
@@ -1111,6 +1111,11 @@ class Title {
 	
 						# Redundant interwiki prefix to the local wiki
 						if ( 0 == strcasecmp( $this->mInterwiki, $wgLocalInterwiki ) ) {
+							if( $t == '' ) {
+								# Can't have an empty self-link
+								wfProfileOut( $fname );
+								return false;
+							}
 							$this->mInterwiki = '';
 							$firstPass = false;
 							# Do another namespace split...
-- 
2.20.1