rem: return this.select(function(value) { return value != undefined || value != null; 
add: this.each(function(value, index) { if (!iterator(value, index)) results.push(value); 
context:     return this.select(function(value) {      return value != undefined || value != null;    });
meta: 6601	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/6601/28b3187d07d97712c23182569a4d6fd00900b5f7/prototype.js/buggy/javascript/prototype/prototype.js