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On Sep 4, 2013, at 11:34 PM, Dirk Laurie <> wrote:

The difficulty is that "in" expects a callable. Anything with a "__call"
metamethod is a valid target for "in".

Really? I was under the impression it wanted an _expression_ list (of which it uses only the first three items). In which case I don't see the ambiguity between __call and __in (or whatever it could be called).