The Tor Browser / file revision

 // findScripts' result includes scripts for nested functions.

 var g = newGlobal();

 var dbg = new Debugger();

 var gw = dbg.addDebuggee(g);

 var log;

 g.eval('function f() { return function g() { return function h() { return "Squee!"; } } }');

 var fw = gw.makeDebuggeeValue(g.f);

 var gw = gw.makeDebuggeeValue(g.f());

 var hw = gw.makeDebuggeeValue(g.f()());

 assertEq(fw.script != gw.script, true);

 assertEq(fw.script != hw.script, true);

 var scripts = dbg.findScripts();

 assertEq(scripts.indexOf(fw.script) != -1, true);

 assertEq(scripts.indexOf(gw.script) != -1, true);

 assertEq(scripts.indexOf(hw.script) != -1, true);