bug#65904: 29.1.50; autorevert can't revert files in a symlink directory

[zhanghj]

Do you mean that the test file itself is a symlink file?

In my case, the test file itself is a normal file. But its parent 
directory is a symlink.

I just tested:  'file-symlink-p' return nil for the test file.


On 9/13/23 20:56, Eli Zaretskii wrote:
> > From: Zhang Haijun <ccsmile2008@outlook.com>
> > Date: Wed, 13 Sep 2023 03:55:15 +0000
> >
> >
> > It works in Emacs 26/27, But it doesn't work in Emacs 29.
> >
> > 0. emacs -Q
> > 1. use the following code to open an existing file in a symlink directory
> > (progn
> >    (setq auto-revert-use-notify t
> >             auto-revert-interval 3)
> >    (global-auto-revert-mode 1)
> >    (setq find-file-hook (delq 'vc-refresh-state find-file-hook))
> >    (find-file "~/symlink_dir/test.txt"))
> >
> > 2. modify the test file in external program and save
> > 3. emacs doesn't autorevert the file
> AFAICT, we don't support autoreverting symlinks, since Dec 2013, so it
> sounds strange that you say it worked in Emacs 27.
>
> The relevant discussion is here:
>
>    https://lists.gnu.org/archive/html/emacs-devel/2013-12/msg00282.html
>
> The reason for this non-support seems to be performance.
>
> I hope Michael (CC'ed) will be able to tell more about this.
>
> A workaround is to set auto-revert-use-notify to nil.