Fix for bug 20601: disable debug output. It can be re-enabled by patching.

diff --git a/includes/diff/DifferenceEngine.php b/includes/diff/DifferenceEngine.php
index e49a860..8e6d2a9 100644 (file)
--- a/includes/diff/DifferenceEngine.php
+++ b/includes/diff/DifferenceEngine.php
@@ -30,6 +30,13 @@ class DifferenceEngine {
        var $mCacheHit = false; // Was the diff fetched from cache?
        var $htmldiff;
 
+       /**
+        * Set this to true to add debug info to the HTML output.
+        * Warning: this may cause RSS readers to spuriously mark articles as "new"
+        * (bug 20601)
+        */
+       var $enableDebugComment = false;
+
        // If true, line X is not displayed when X is 1, for example to increase
        // readability and conserve space with many small diffs.
        protected $mReducedLineNumbers = false;
@@ -827,6 +834,9 @@ CONTROL;
         */
        protected function debug( $generator="internal" ) {
                global $wgShowHostnames;
+               if ( !$this->enableDebugComment ) {
+                       return '';
+               }
                $data = array( $generator );
                if( $wgShowHostnames ) {
                        $data[] = wfHostname();