Re: What happens when you try to serialize a closure

[Luiz Henrique de Figueiredo <lhf@...>]

> So... _ENV is not an implicit upvalue of every function?

No.

> And if you could write a main chunk that did not reference _ENV, would
> it then have zero upvalues?

No. All main chunks have _ENV as its first upvalue, even if they don't
refer to globals.