The Tor Browser / file revision

 // eval correctly handles optional lineNumber option

 var g = newGlobal();

 var dbg = new Debugger(g);

 var count = 0;

 function testLineNumber (options, expected) {

     count++;

     dbg.onDebuggerStatement = function (frame) {

         dbg.onNewScript = function (script) {

             dbg.onNewScript = undefined;

             assertEq(script.startLine, expected);

             count--;

         };

         frame.eval("", options);

     };

     g.eval("debugger;");

 }

 testLineNumber(undefined, 1);

 testLineNumber({}, 1);

 testLineNumber({ lineNumber: undefined }, 1);

 testLineNumber({ lineNumber: 5 }, 5);

 assertEq(count, 0);