rem: return this.inject([], function(array, value) { return array.include(value) ? array : array.concat([value]); 
add: return this.select(function(value) { return !values.include(value); 
context:     return this.inject([], function(array, value) {      return array.include(value) ? array : array.concat([value]);    });
meta: 7608	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7608/d556a0875c83645645bd2067594241546d26d052/prototype.js/buggy/web/js/prototype.js