michael@0: function f1(...arguments) {
michael@0:     assertEq("1,2,3", arguments.toString());
michael@0: }
michael@0: f1(1, 2, 3);
michael@0: function f2(arguments, ...rest) {
michael@0:     assertEq(arguments, 42);
michael@0:     assertEq("1,2,3", rest.toString());
michael@0: }
michael@0: f2(42, 1, 2, 3);