bug#46627: [PATCH] Add new help command 'describe-command'

[Eli Zaretskii]

> Cc: larsi@gnus.org, stefan@marxist.se, rms@gnu.org, 46627@debbugs.gnu.org
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Tue, 2 Mar 2021 14:55:26 +0200
> 
> On 02.03.2021 07:31, Eli Zaretskii wrote:
> > Perhaps I'm missing something, but if, for example, you use the
> > 'initials' style, then "lch" can complete to list-command-history, but
> > if you don't use 'initials', it will complete to nothing.  So maybe
> > you are right from the implementation POV, but the list of the
> > candidates shown to the user is in fact determined by the style.  And
> > that displayed list is what matters for discovery; that Emacs
> > internally had some other list is immaterial.
> 
> It matters because the completion table is determined by the command in 
> use, and the completion style is based on user customization.
> 
> As such, completion styles don't usually use any semantic information 
> about completions.

We are talking past each other.