bug#57536: 28.1; filenotify problems on macOS with symbolic links to directories

[Michael Albinus]

Eli Zaretskii <eliz@gnu.org> writes:

Hi Eli,

>> Btw, there are bug#16113 and bug#18883, which report a similar problem
>> in auto-reverting. A possible solution could be to extend the FLAGS arg
>> of file-notify-add-watch by a condition 'follow', which means to
>> supervise the expanded symlink instead of the link file itself.
>
> I think it would be better to handle that option in Lisp, before we
> call the OS-specific notification library.  That way, we can control
> better what exactly "follow symlinks" means.

Of course, that's why I've mentioned file-notify-add-watch.

>> inotify knows the mask bit IN_DONT_FOLLOW (which we haven't set yet),
>> see inotify(7). Other libraries might offer similar possibilities, which
>> I haven't checked yet.
>
> I see that w32notify.c currently follows symlinks; that will need to
> be fixed.

Yep. I guess you'll care about w32notify.c. and I'll check inotify.c,
kqueue.c and gfilenotify.c?

Best regards, Michael.