Ticket #11678: 11678.lowercase-tagnames.patch

wp-includes/formatting.php

@@ -171 +171 @@
 
         if ( trim($pee) === '' )
                 return '';
+        
+        // Lowercase tagnames
+        $pee = preg_replace('/<[\/]?[A-Z]+/e', "strtolower('\\0')", $pee);
+        
         $pee = $pee . "\n"; // just to make things a little easier, pad the end
         $pee = preg_replace('|<br />\s*<br />|', "\n\n", $pee);
         // Space things out a little