rem: return this.select(function(value) { return !values.include(value); 
add: return this.inject([], function(array, value) { return array.concat(value && value.constructor == Array ? value.flatten() : [value]); 
context:     return this.select(function(value) {      return !values.include(value);    });
meta: 9859	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9859/c1f8a57fb495053291d684e68f518dd14dfa0a6f/prototype.js/clean/js_test/prototype.js