rem: return undefined; 
add: return no_result; 
context: function mapField(fieldname) {    var i = findIndex(f1,fieldname);    if (i >= 0) return f2[i];    return undefined;} 
meta: 3132	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3132/6f095c3f8cfdb73ce00f6f2cbe901ab5742fa341/quicksearch.js/buggy/quicksearch.js