michael@0: // Don't assert.
michael@0: "p".match(/(p)/);
michael@0: assertEq(RegExp.$1, "p");
michael@0: assertEq(RegExp.$2, "");
michael@0: 
michael@0: "x\ny\n".replace(/(^\n*)/, "");
michael@0: assertEq(RegExp.$1, "");
michael@0: assertEq(RegExp.$2, "");