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- Subject: Re: Lua 5.4.0 (work1), undef and metatable
- From: Roberto Ierusalimschy <roberto@...>
- Date: Wed, 14 Mar 2018 11:35:09 -0300
> 2018-03-14 12:43 GMT+03:00 Daurnimator <quae@daurnimator.com>:
> > On 14 March 2018 at 20:38, Sergey Zakharchenko <doublef.mobile@gmail.com> wrote:
> >> No metamethod calls occur for the undef assignment and check. This
> >> doesn't seem right.
> >
> > I think I saw a __undef introduced?
>
> How would the supposed backwards compatibility be kept if existing
> code doesn't define __undef/__isdef?
You are right. We still do not get full backwards compatibility, because
of metamethods. We will try to correct it.
-- Roberto
