rem: return array.concat(value.constructor == Array ? 
add: return array.concat(value && value.constructor == Array ? 
context:   flatten: function() {    return this.inject([], function(array, value) {      return array.concat(value.constructor == Array ?        value.flatten() : [value]);    });  },
meta: 6601	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/6601/28b3187d07d97712c23182569a4d6fd00900b5f7/prototype.js/buggy/javascript/prototype/prototype.js