bug#53618: 29.0.50; macroexp-warn-and-return incompatible change

[Stefan Monnier]

I think both Alan and I have stated our diverging opinions.  I don't
think either of us is going to convince the other: we both have good
reasons which we mutually understand, we just disagree on the importance
to put on the various parts of the tradeoff.

So I'd appreciate a decision from the maintainers:

Should we keep the backward-incompatible code we currently have on
`master` or should we take my patch with its someone annoyingly
placed extra argument (or some yet distinct option)?


        Stefan