-- main.mcl --
# this can return changing functions, and could be optimized, too
$funcgen = func() {
	func($b) {
		if $b {
			func() {
				"hello"
			}
		} else {
			func() {
				"world"
			}
		}
	}
}

$fn = $funcgen()

$out1 = $fn(true)
$out2 = $fn(false)

$name1 = $out1()
$name2 = $out2()

test "${name1}" {}
test "${name2}" {}
-- OUTPUT --
Vertex: test[hello]
Vertex: test[world]