Subject: Re: bug#60252: 29.0.60; help-fns--describe-function-or-command-prompt asks for confirmation

From: Stefan Monnier <[email-masked]>
Date: Thu, 22 Dec 2022 11:48:13 -0500

> I'm actually wondering why Martin considers this a backward
> incompatibility.  set-face-a cannot be uniquely completed to a single
> function name, since there are 3 completion candidates.

But it can be completed to a string which is an exact match.

> So it sounds like the Emacs 28 behavior was actually a bug,

Whether it was the right behavior or not can be argued, but that's how
"must match" has behaved for many many years (probably at least since
Emacs-19), AFAIK.

> which is now fixed?

We may as well revert that part of my patch.

        Stefan