bug#40968: 28.0.50; (apply nil)

[Eli Zaretskii]

> Date: Wed, 6 May 2020 12:28:21 -0700 (PDT)
> From: Drew Adams <drew.adams@oracle.com>
> Cc: Stefan Kangas <stefan@marxist.se>, 40968@debbugs.gnu.org,
>  Noam Postavsky <npostavs@gmail.com>
> 
> I think (apply '(+)) should raise an error, because
> (a) the first arg is not a function and (b) it's
> missing a second arg.

That'd be an incompatible change, so it is best not to make such a
change.