michael@0: function f( )  {
michael@0:   var [ [x], e ]  = ["*", "/", "%"];
michael@0:     function h() {
michael@0:       for (var i = 0; i < 5; ++i) {
michael@0:         x = i * 2;
michael@0:       }
michael@0:     }
michael@0:     h();
michael@0:   assertEq(x, 8);
michael@0: } 
michael@0: f();
michael@0: