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Comment by girvo | Hacker News Reader

I agree. Usually, I end up leaning on PEGs instead:

That's pretty bad:

    import pegs
    echo "xzxy" =~ peg"""
    B <- A 'x' 'y' / C
    A <- '' / 'x' 'z'
    C <- C 'w' / 'v'
    """

Stack overflow

Nim needs to let go of its toy parsing algorithm.