return this; 
return String(this); 
  scan: function(pattern, iterator) {    this.gsub(pattern, iterator);    return this;  },
6462	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6462/0097375444aef03d8cdcdbe6705c1ea088b9b188/prototype.js/buggy/wp-includes/js/prototype.js