-- main.mcl --
$funcgen1 = func() {
	func($b) {
		$b + " " + "world"
	}
}

$funcgen2 = func() {
	func($b) {
		if $b == "hello" {
			"hey"
		} else {
			$b
		}
	}
}

$funcgen3 = func() {
	func($b) {
		if $b == "hello" {
			func() {
				"hey"
			}
		} else {
			func() {
				$b
			}
		}
	}
}

$fn1 = $funcgen1()
$out1 = $fn1("hello")
test "${out1}" {}

$fn2 = $funcgen2()
$out2 = $fn2("hello")
test "${out2}" {}

$fn3 = $funcgen3()
$out3 = $fn3("goodbye")
$name3 = $out3()
test "${name3}" {}
-- OUTPUT --
Vertex: test[goodbye]
Vertex: test[hello world]
Vertex: test[hey]