The Tor Browser / file revision

 // Any copyright is dedicated to the Public Domain.

 // http://creativecommons.org/licenses/publicdomain/

 function innermost() { return arguments.callee.caller; }

 function nest() { return eval("innermost();"); }

 function nest2() { return nest(); }

 assertEq(nest2(), nest);

 var innermost = function innermost() { return arguments.callee.caller.caller; };

 assertEq(nest2(), nest2);

 function nestTwice() { return eval("eval('innermost();');"); }

 var nest = nestTwice;

 assertEq(nest2(), nest2);

 function innermostEval() { return eval("arguments.callee.caller"); }

 var innermost = innermostEval;

 assertEq(nest2(), nestTwice);

 function innermostEvalTwice() { return eval('eval("arguments.callee.caller");'); }

 var innermost = innermostEvalTwice;

 assertEq(nest2(), nestTwice);

 /******************************************************************************/

 if (typeof reportCompare === "function")

   reportCompare(true, true);

 print("Tests complete");