-- main.mcl --
import "fmt"

$map = {0 => "a", 1 => "b", 2 => "c",}

forkv $key, $val in $map {
	$s = $val # our first major bug was triggered by this!
	test [$s,] {}
}

# The buggy version would return "test[a]" three times!
-- OUTPUT --
Vertex: test[a]
Vertex: test[b]
Vertex: test[c]