bug#63627: Improve plstore.el and fix various issues of it

[Eli Zaretskii]

> Date: Sat, 16 Sep 2023 12:35:51 +0200
> Cc: 63627@debbugs.gnu.org
> From: Jens Schmidt <jschmidt4gnu@vodafonemail.de>
> 
> On 2023-09-16  12:13, Eli Zaretskii wrote:
> >> Date: Thu, 14 Sep 2023 23:24:54 +0200
> >> Cc: 63627@debbugs.gnu.org
> >> From: Jens Schmidt <jschmidt4gnu@vodafonemail.de>
> >>
> >> Please consider for committing on emacs-29.
> > 
> > Thanks, but did you mean to say this should not be subsequently merged
> > to master?  If so, you should tell that in the commit log message.
> 
> No, this should go to both emacs-29 and (by "automatic" subsequent
> merging) also to master.

Thanks, installed on the emacs-29 branch, and closing the bug.

> Sorry, I thought that was the default.

It is indeed the default, but the non-trivial changes and something
you said about "only emacs-29 bugs" made me doubt that.