michael@0: actual = '';
michael@0: expected = 'foo4,foo4,';
michael@0: 
michael@0: v = 0
michael@0: let(f = function (y) {
michael@0:     let(f = function (y) {
michael@0:         let(f = function (g) {
michael@0:             for (h in g) {
michael@0:                 if (++y > 3) {
michael@0:                     appendToActual('foo' + y)
michael@0:                 }
michael@0:             }
michael@0:         }) {
michael@0:             f([y
michael@0:             for (b in [1, []])]);
michael@0:             f(['', false])
michael@0:         }
michael@0:         v = String
michael@0:     }) {
michael@0:         f(y)
michael@0:         f(y)
michael@0:     }
michael@0: }) {
michael@0:     f(v)
michael@0: }
michael@0: 
michael@0: 
michael@0: assertEq(actual, expected)