Re: Remove all existing file notification watches from Emacs

[Eli Zaretskii <eliz@gnu.org>]

> From: Michael Albinus <michael.albinus@gmx.de>
> Date: Sat, 16 Oct 2021 09:14:17 +0200
> 
> While working on bug#51146, I found the following command useful, which
> removes all file notification watches from an Emacs instance:
> 
> --8<---------------cut here---------------start------------->8---
> (defun file-notify-rm-all-watches ()
>   "Remove all existing file notification watches from Emacs."
>   (interactive)
>   (maphash
>    (lambda (key _value)
>      (file-notify-rm-watch key))
>    file-notify-descriptors))
> --8<---------------cut here---------------end--------------->8---
> 
> The code is simple enough to avoid regressions. I'd like to add it to
> the emacs-28 branch (plus doc), any objection?

I don't necessarily object, but why is it important to have this
command in Emacs 28?  Just being useful is not enough, IMO: there are
quite a few features that have this property and are orthogonal to the
rest of the code, so allowing this addition will then beg the question
why not those others as well?