[erlang-questions] Weird function match semantics

Matthew Dempsky matthew@REDACTED
Fri Nov 16 23:48:21 CET 2007

I expect the following three expressions to evaluate to 'ok':

    (fun("X" ++ _) -> ok end)("X").
    (fun([$X | _]) -> ok end)("X").
    (fun([$X] ++ _) -> ok end)("X").

The first two meet my expectations, but the third exits with an
illegal_pattern exception.  Is this intentional or a bug?


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