Re: [PATCH] `completing-read`: Add `group-function` support to completion metadata (REVISED PATCH VERSION 2)

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Date: Tue, 11 May 2021 21:06:53 +0300
> Cc: mail@daniel-mendler.de, gregory@heytings.org, dgutov@yandex.ru,
>  monnier@iro.umontreal.ca, emacs-devel@gnu.org
> 
> >> +(defcustom read-char-by-name-group-sort nil
> >> +  "How to sort groups of characters for `read-char-by-name' completion.
> >> +When t, sort sections of Unicode blocks alphabetically."
> >
> > This doesn't say what happens if the value is not t.  And since the
> > first sentence says "How to sort...", the idea that the result is
> > unsorted group names doesn't come to mind naturally.
> 
> Now read-char-by-name-group-sort is removed, since this can be
> customized by completions-group-sort-function.

And this is supposed to be progress? to force users to customize
sorting by providing their own functions?  IMO, it is a step backward,
not forward: we are making Emacs harder to use for everyone who isn't
a Lisp programmer.

Btw, I don't see the variable you mention anywhere in the current
master.  What am I missing?