matchymatch.coco

"""Demonstration of an embedded match statement that does not behave properly.

This program should print...

    ---
    one
    ---
    two
    ---
    three

But it actually prints...

    ---
    one
    ---
    two
    three
    ---
    three
"""


def printval(a, b):
    print("---")
    case a:
        match False:
            match False in b:
                print("one")
            else:
                print("two")
        match True:
            print("three")


def main():
    [
        printval(a, b)
        for a, b in [
            (False, False),
            (False, True),
            (True, False),
        ]
    ]


if __name__ == '__main__':
    main()