michael@0: 
michael@0: gczeal(11);
michael@0: var otherGlobal = newGlobal();
michael@0: function test(str, arg, result)
michael@0: {
michael@0:         var fun = new Function('x', str);
michael@0:             var code = "(function (x) { " + str + " })";
michael@0:                 var c = clone(otherGlobal.evaluate(code, {compileAndGo: false}));
michael@0:                     assertEq(c.toSource(), eval(code).toSource());
michael@0: }
michael@0: test('return let (y) x;');
michael@0: test('return let (x) "" + x;', 'unicorns', 'undefined');
michael@0: test('return let (y = x) (y++, "" + y);', 'unicorns', 'NaN');
michael@0: test('return let (y = 1) (y = x, y);');
michael@0: test('return let ([] = x) x;');
michael@0: test('return let ([, ] = x) x;');
michael@0: test('return let ([, , , , ] = x) x;');
michael@0: test('return let ([[]] = x) x;');
michael@0: test('return let ([[[[[[[[[[[[[]]]]]]]]]]]]] = x) x;');
michael@0: test('return let ([[], []] = x) x;');
michael@0: test('return let ([[[[]]], [], , [], [[]]] = x) x;');