bug#62700: 29.0.60; minibuffer-{previous,next,choose}-completion behave unintuitively when point is not at end of buffer

[Eli Zaretskii <eliz@gnu.org>]

> From: Juri Linkov <juri@linkov.net>
> Cc: sbaugh@catern.com,  62700@debbugs.gnu.org,  sbaugh@janestreet.com
> Date: Sun, 09 Apr 2023 19:40:37 +0300
> 
> >> > If this is for master, I'm fine with such changes.  But if you intend
> >> > to request installing this on emacs-29, then I will object making
> >> > non-trivial changes in any code that is not specific to the M-<UP> and
> >> 
> >> Actually, a change for base-suffix in minibuffer-completion-help
> >> is a trivial change.  What counts as a non-trivial change would be
> >> changing the API in completion-all-completions.
> >> 
> >> > M-<DOWN> bindings that are new in Emacs 29.  I don't want to risk any
> >> > regressions in general-purpose completion code at this late stage.
> >> 
> >> These changes are specific to the M-<UP> and M-<DOWN> bindings:
> >> completion-use-base-affixes is nil, and it's let-bound to t
> >> in M-<UP> (minibuffer-previous-completion) and M-<DOWN>
> >> (minibuffer-next-completion).
> >
> > The change I reviewed and to which I responded was in code that was
> > there in Emacs 28 as well.  Maybe we are talking about two different
> > sets of changes.
> 
> That code was added in Emacs 29 a year ago in the commit
> 7aaffe25eb178f69027fb0af844a89a86db4b1f2.

Ah, you mean that part.  Yes, but a year is a long time, and making
non-trivial changes there now is not something I'd like to do.