rem: return this.map(function(value, index) { iterator(value = collections.pluck(index)); return value; 
add: this.each(function(value, index) { ((iterator || Prototype.K)(value, index) ? trues : falses).push(value); 
context:     return this.map(function(value, index) {      iterator(value = collections.pluck(index));      return value;    });
meta: 3974	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3974/af9adbf17404d887f31369756326b0109da7ae2b/prototype.js/buggy/root/static/js/prototype.js