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On 19 June 2018 at 22:06, Roberto Ierusalimschy <roberto@inf.puc-rio.br> wrote:
>> Thank you. I see various occurrences of undef in the tests - is that
>> intentional?
>
> Yes. As I said, I've found useful to use undef (which is equal to nil)
> as a way to document that I am removing an element from a table.
>

Okay.