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> > And then it really would be much better, if the __close metafunction
> > is used automatically (if it exists).
> You have one of these, it is called __gc.

Thank you, this is interesting remark, also this sort of "competition"
between __close and __gc.

Would __gc be invoked for local variables or not?

In the Reference Manual the local variables are described in §3.2, but
their closing behaviour is a bit unclear I think. I cannot really
recognize, whether local variables are destroyed by gc, or whether
they exist on stack and are destroyed "automatically" and end of their