Re: Remove all existing file notification watches from Emacs

[Stefan Monnier]

> 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---

I can see its use while debugging but I can't imagine it being of any
use in real ELisp code because it's much too blunt.
[ Personally I'd put a `--` in its name and/or add some blurb in the
docstring explaining it's only for debugging.  ]

> 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 see any reason why it needs to be in emacs-28.
It's not a bugfix and there's no hurry.


        Stefan