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

[Dmitry Gutov]

On 21.02.2021 20:21, Eli Zaretskii wrote:
> I'm arguing against the tendency to introduce a whole new discovery
> framework based on completion.  I think Emacs doesn't need that in
> core; whoever wants something like that, can use one of the many
> packages out there which implement every possible completion paradigm
> under the sun.  We as the core development team should not invest any
> significant energy in developing such framework, but should instead
> improve and enhance what we already have.

I think we've "had it" ever since 'M-x' started providing completion. 
Right after that, it became possible to discover commands this way (and 
I do it all the time, too).

So it's really about improving an existing feature.