GNU bug report logs - #75022
31.0.50; --init-directory sets user-emacs-directory after user eln-cache is set

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: "Jordan Isaacs" <jordan <at> snowytrees.dev>
Subject: bug#75022: closed (Re: bug#75022: 31.0.50; --init-directory sets
 user-emacs-directory after user eln-cache is set)
Date: Sat, 04 Jan 2025 12:46:02 +0000

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Your bug report

#75022: 31.0.50; --init-directory sets user-emacs-directory after user eln-cache is set

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 75022 <at> debbugs.gnu.org.

-- 
75022: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=75022
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Andrea Corallo <acorallo <at> gnu.org>
Cc: jordan <at> snowytrees.dev, 75022-done <at> debbugs.gnu.org
Subject: Re: bug#75022: 31.0.50; --init-directory sets user-emacs-directory
 after user eln-cache is set
Date: Sat, 04 Jan 2025 14:45:31 +0200

> From: Andrea Corallo <acorallo <at> gnu.org>
> Cc: "Jordan Isaacs" <jordan <at> snowytrees.dev>,  75022 <at> debbugs.gnu.org
> Date: Sun, 29 Dec 2024 06:25:18 -0500
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> >> Date: Sun, 22 Dec 2024 13:26:04 -0800
> >> From: "Jordan Isaacs" <jordan <at> snowytrees.dev>
> >> Cc: 75022 <at> debbugs.gnu.org
> >> 
> >> Because it is read only, there is no reason not to byte compile everything. I just make it part of the build step when packaging up my configuration.
> >> 
> >> The reasoning for why I byte compile though seems irrelevant, it’s a bug with a simple fix. The eln-cache path isn’t staying in sync with user-emacs-directory. 
> >> 
> >>     (let ((old-face-font-rescale-alist face-font-rescale-alist))
> >>       (unwind-protect
> >> 	  (command-line)
> >> +  (when (featurep 'native-compile)
> >> +     (startup--update-eln-cache))
> >
> > I'm not at all sure it's indeed so simple to change the eln-cache in
> > the middle of a session, but let's hear what Andrea (CC'ed) thinks
> > about this.
> 
> I have nothing in my mind which suggests this should not work, I think
> that if the patch is tested and seems to work we could try it on master.

OK, installed on master, and closing the bug.

Thanks.

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From: "Jordan Isaacs" <jordan <at> snowytrees.dev>
To: bug-gnu-emacs <at> gnu.org
Subject: 31.0.50;
 --init-directory sets user-emacs-directory after user eln-cache is set
Date: Sun, 22 Dec 2024 03:57:01 -0800

In startup.el, the user-emacs-directory and the user eln-cache are set up before processing command line args.
The user eln-cache is then gets updated after the early-init.el is loaded. This leaves a gap where early-init.el is
loaded without the correct eln-cache directory. This means there will always be a cache miss if the early-init.eln
file was in the `--init-directory`.

To fix this, either `--init-directory` needs to be read before setting up the user eln-cache, or a call to `startup--update-eln-cache` needs to be called after command line args are processed since user-emacs-directory may have changed (from `--init-directory`).

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