bug#22154: 25.0.50; emacsclient -c "breaks" 256-color display in server

[Eli Zaretskii <eliz@gnu.org>]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Dan Nicolaescu <dann@gnu.org>,  eric.hanchrow@gmail.com,
>   22154@debbugs.gnu.org
> Date: Sat, 05 Sep 2020 16:50:29 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> What exactly is the problem that your patch fixes?
> >
> > The fact that the default escape sequences for turning colors on or
> > off are stored in global variables that get overwritten each time
> > another tty is initialized.
> 
> I haven't tried to reproduce the bug, but it seems like you never
> applied your per-tty colour patch which (from my limited knowledge of
> the tty stuff) sounded like a good idea.  (It didn't fix the reported
> problem, but looks more correct, anyway.)

I didn't apply it because it solved only a part of the problem.  The
solution to this bug needs to solve the rest as well.