Re: master 69ec333eab0: Allow customizing partial-completion to be more like substring

[Eli Zaretskii <eliz@gnu.org>]

> From: Spencer Baugh <sbaugh@janestreet.com>
> Date: Tue, 24 Sep 2024 07:32:22 -0400
> Cc: emacs-devel@gnu.org
> 
>  > I started writing documentation, but I came to the conclusion that most
>  > users other than completion-styles should use the "group" widget
>  > instead.  And documenting single-or-list would encourage using it
>  > instead of group, which I don't think is correct.
>  > 
>  > Maybe this widget should just be moved to minibuffer.el?
>  > 
>  > Alternatively, if there are any other customizable variables or values
>  > in Emacs which are sometimes a single value, and sometimes a list, then
>  > this widget would be useful for those.  If we can think of any such
>  > variables, then that would help justify the existence of single-or-list
>  > (and I would convert their defcustoms to use single-or-list).  That
>  > would help in writing documentation about when exactly to use it.
> 
>  I'm not sure I understand: are you saying that your change to
>  minibuffer.el can be rewritten to not use single-or-list?  If so, I'm
>  okay with that, and in that case we should simply remove
>  single-or-list, until there are some users of it.
> 
> No, it's still necessary for my changes in minibuffer.el.  But I don't think it's useful outside that.

OK, then I think moving the widget to minibuffer.el is indeed enough.