rem: results.push(iterator(value, index)); 
add: results.push((iterator || Prototype.K)(value, index)); 
context:   collect: function(iterator) {    var results = [];    this.each(function(value, index) {      results.push(iterator(value, index));    });    return results;  },
meta: 1164	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1164/cb2408a82c9bc93bef177dc33a8981bc36800839/prototype.js/buggy/tools/prototype.js