autoloads load file is wrong in Emacs 28 when using symlink

autoloads load file is wrong in Emacs 28 when using symlink

[Jiacai Liu]

Hi,

I build emacs-28 branch with commit 3f998a3fc8 on macOS, it seems 
autoloads load-file is different from emacs 27 when 
package-install. Take undo-tree as an example:

;; 27
(autoload 'undo-tree-mode "undo-tree" "some docstring" t nil)

;; 28
(autoload 'undo-tree-mode 
"../../../../../../.config/emacs/elpa/undo-tree-0.7.5/undo-tree" 
"some docstring" t nil)


After some debugging, I found this issue is related with symlink.

I usually put all my dotfiles in a git repo(emacs included), and 
soft link to ~/.config/emacs, then load file is wrong as above.
If I put config directly at ~/.config/emacs, load file is the same 
as Emacs 27.

Re: autoloads load file is wrong in Emacs 28 when using symlink

[Jiacai Liu]

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Hi,

It has been some time since I file this issue, it seems somebody 
else also have this issue[1].

After some debugging, I find find-file-visit-truename must be nil 
inside autoload-find-generated-file in order to get the correct 
path.

I haven't found which commit introduce this issue, the last commit 
here is from larsmagne

- 
  https://github.com/emacs-mirror/emacs/commit/6f36b67e4146ef4610916b7903fd292e1308daf5#diff-92d5169948d378056770f5d1da4c8a70bd4fff0e9d92fe87fa21dd2a8303c13f

Maybe he can share some ideas about this issue.


[1] https://github.com/raxod502/straight.el/issues/701


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On Sat, Nov 06, 2021 at 09:40:21 PM +0800, Jiacai Liu wrote:

> Hi,
>
> I build emacs-28 branch with commit 3f998a3fc8 on macOS, it 
> seems autoloads load-file is different
> from emacs 27 when package-install. Take undo-tree as an 
> example:
>
> ;; 27
> (autoload 'undo-tree-mode "undo-tree" "some docstring" t nil)
>
> ;; 28
> (autoload 'undo-tree-mode 
> "../../../../../../.config/emacs/elpa/undo-tree-0.7.5/undo-tree" 
> "some
> docstring" t nil)
>
>
> After some debugging, I found this issue is related with 
> symlink.
>
> I usually put all my dotfiles in a git repo(emacs included), and 
> soft link to ~/.config/emacs, then
> load file is wrong as above.
> If I put config directly at ~/.config/emacs, load file is the 
> same as Emacs 27.

Re: autoloads load file is wrong in Emacs 28 when using symlink

[Lars Ingebrigtsen]

Jiacai Liu <hello@liujiacai.net> writes:

> It has been some time since I file this issue, it seems somebody else
> also have this issue[1].
>
> After some debugging, I find find-file-visit-truename must be nil
> inside autoload-find-generated-file in order to get the correct path.

I'm not quite sure I understand the issue.  Can you report the problem
with `M-x report-emacs-bug', and give a recipe for how to reproduce the
problem, starting from "emacs -Q"?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Re: autoloads load file is wrong in Emacs 28 when using symlink

[Jiacai Liu]

> Can you report the problem with `M-x report-emacs-bug'

After some search, I found someone else already did this.
- https://lists.gnu.org/r/bug-gnu-emacs/2021-12/msg00376.html

If it helps, below is the step I use to reproduce this issue:

1. mkdir an empty dir, and soft link to emacs config dir
`mkdir /tmp/emacs-conf && ln -s /tmp/emacs-conf $HOME/.emacs.d`
2. (setq find-file-visit-truename t)
3. package-install undo-tree

Then open generated autoloads file for undo-tree under
$HOME/.emacs.d/undo-tree-${version}/undo-tree-autoloads.el,
the content is something like

(autoload 'undo-tree-mode
"../../../../../Users/${username}/.emacs.d/elpa/undo-tree-0.7.5/undo-tree"
"long docsting" t nil)

In Emacs 27, the content is
(autoload 'undo-tree-mode "undo-tree" "long docsting" t nil)