-- main.mcl --
$x1 = "bad1"
class foo($x1, $x2) {
	test "t1: " + $x2 {} # swapped
	test "t2: " + $x1 {}
}
include foo($x2, "t1")
$x2 = "t2"
-- OUTPUT --
Vertex: test[t1: t1]
Vertex: test[t2: t2]