bug#46331: provided-mode-derived-p doesn't work on aliases

[Lars Ingebrigtsen]

Reuben Thomas <rrt@sc3d.org> writes:

> There is one remaining nit: the docstring of provided-mode-derived-p
> was updated by that earlier commit to say "MODES or their aliases";
> presumably a similar change should be made to the docstring of
> derived-mode-p?

I think adding "MODES or their aliases" was a bit superfluous -- I think
it should be self-evident that that's what's meant here.  I didn't
remove that bit from the doc string, but I think adding it to
derived-mode-p isn't all that helpful.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no