``` // escape html entities in comments function encode_code_in_comment($source) { $encoded = preg_replace_callback('/<code>(.*?)<\/code>/ims', create_function('$matches', '$matches[1] = preg_replace(array("/^[\r|\n]+/i", "/[\r|\n]+$/i"), "", $matches[1]); return "<code>" . htmlentities($matches[1]) . "</"."code>";'), $source); if ($encoded) return $encoded; else return $source; } add_filter('pre_comment_content', 'encode_code_in_comment'); ```