-- main.mcl --
$x1 = "bad1"
class foo($x1, $x2) {
	include bar
	test "t1: " + $x1 {}
	test "t2: " + $x2 {}
	class bar {
		test "t0: " + $x0 {}
	}
}
include foo("t1", $x2)
$x2 = "t2"
$x0 = "t0"
-- OUTPUT --
Vertex: test[t0: t0]
Vertex: test[t1: t1]
Vertex: test[t2: t2]