Subject: Re: bug#66742: 30.0.50; transient-mark-mode is not enabled after re-dumping Emacs

From: Eli Zaretskii <[email-masked]>
Date: Fri, 27 Oct 2023 13:37:39 +0300

> From: Ihor Radchenko <[email-masked]>
> Cc: [email-masked], [email-masked]
> Date: Fri, 27 Oct 2023 09:04:23 +0000
> 
> Eli Zaretskii <[email-masked]> writes:
> 
> > To clarify: a defcustom whose default value is not a constant needs to
> > be re-evaluated during startup, if we want the dumped Emacs to be able
> > to run on another system or with different environment than at dump
> > time.
> 
> Is there a facility in place to do such re-evaluation?

Yes, see custom-initialize-delay, and the code in startup.el that
supports it.