return {start: lastDot+1, end: expr.length-1}; 
return {start: lastDot+1, end: expr.length-1}; 
function getDot(expr, offset){    var lastDot = expr.lastIndexOf(".");    if (lastDot == -1)        return null;    else        return {start: lastDot+1, end: expr.length-1}; }
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/856922939002b0d3462c04ce77a6e2ad91741388/commandLine.js/clean/extension/content/firebug/commandLine.js