Ticket #22625: balanceTags-23001-2.patch

wp-includes/formatting.php

@@ -1181 +1181 @@
         // WP bug fix for LOVE <3 (and other situations with '<' before a number)
         $text = preg_replace('#<([0-9]{1})#', '&lt;$1', $text);
 
-        while ( preg_match("/<(\/?[\w:]*)\s*([^>]*)>/", $text, $regex) ) {
+        while ( preg_match("/<(\/?[\w:]+)\s*([^>]*)>/", $text, $regex) ) {
                 $newtext .= $tagqueue;
 
                 $i = strpos($text, $regex[0]);
@@ -1258 +1258 @@
                                 $tag = '';
                         }
                 }
-                $newtext .= substr($text, 0, $i) . $tag;
+                $newtext .= str_replace( '<', '&lt;', substr($text, 0, $i)) . $tag;
                 $text = substr($text, $i + $l);
         }
 
@@ -1266 +1266 @@
         $newtext .= $tagqueue;
 
         // Add Remaining text
-        $newtext .= $text;
+        $newtext .= str_replace( '<', '&lt;', $text );
 
         // Empty Stack
         while( $x = array_pop($tagstack) )