Fix Title::getFragmentForURL for bad interwiki prefix.

[lhc/web/wiklou.git] / includes / Title.php

diff --git a/includes/Title.php b/includes/Title.php
index 3496668..1bb54df 100644 (file)
--- a/includes/Title.php
+++ b/includes/Title.php
@@ -1609,11 +1609,15 @@ class Title implements LinkTarget, IDBAccessObject {
        public function getFragmentForURL() {
                if ( !$this->hasFragment() ) {
                        return '';
-               } elseif ( $this->isExternal()
-                       && !self::getInterwikiLookup()->fetch( $this->mInterwiki )->isLocal()
-               ) {
-                       return '#' . Sanitizer::escapeIdForExternalInterwiki( $this->mFragment );
+               } elseif ( $this->isExternal() ) {
+                       // Note: If the interwiki is unknown, it's treated as a namespace on the local wiki,
+                       // so we treat it like a local interwiki.
+                       $interwiki = self::getInterwikiLookup()->fetch( $this->mInterwiki );
+                       if ( $interwiki && !$interwiki->isLocal() ) {
+                               return '#' . Sanitizer::escapeIdForExternalInterwiki( $this->mFragment );
+                       }
                }
+
                return '#' . Sanitizer::escapeIdForLink( $this->mFragment );
        }