bug#49651: 28.0.50; setf bug

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Wed, 21 Jul 2021 16:55:20 +0200
> Cc: Michael Heerdegen <michael_heerdegen@web.de>, 49651@debbugs.gnu.org,
>  Devon Sean McCullough <Emacs-Hacker2020@jovi.net>
> 
> These newfangled files...   I mean, gv.el is just nine years old.

Welcome to the brave new Emacs world!  Where you can never trust your
decade-long memory regarding where to find stuff.  It's all a-changing
twice every week.