Re: How to reset the idle timer?

On Sun, Mar 1, 2026 at 2:57 PM <[email protected]> wrote:

> On 2026-03-01, at 12:13, Stéphane Marks <[email protected]> wrote:
>
> > On Sun, Mar 1, 2026 at 12:09 PM <[email protected]> wrote:
> >
> >  On 2026-03-01, at 03:48, Stéphane Marks <[email protected]> wrote:
> >
> >  > You could give the new `system-sleep` package a try that is in Emacs
> 31 from master.  Register a hook on
> >  > `system-sleep-event-functions` and your hook will be notified when
> the system is about to sleep or has woken up.  This
> >  will be
> >  > more reliable than relying on timers, though, if you want to defer
> some of the work you could set a one-shot timer upon
> >  waking
> >  > to do your work.
> >
> >  Ha, I had no idea this existed, thanks!  From a cursory reading it seems
> >  that this feature is in its early days - it gives me a bit of a vibe of
> >  an unpolished prototype - but it's definitely a great addition to Emacs!
> >  I will certainly blog about is, since it is potentially very useful.
> >  (Not to mention that it seems to bring Emacs even closer to an operating
> >  system;-)).
> >
> > Prototype is in the eye of the beholder, I suppose.  It runs on
> Linux/D-Bus, MS-Windows, macOS/NS and has been used already
> > by other people.  Try it and if you find an issue let us know.
>
> Ha, sorry again for poor wording.  The prototype-ish feeling I had was
> the result of seeing this in the docs:
>
> --8<---------------cut here---------------start------------->8---
> -- User Option: system-sleep-event-functions
>      When the system is about to enter a sleep state or after it wakes
>      from one, each function on this abnormal hook is called with one
>      argument, EVENT, a sleep event.  Its state can be retrieved via
>      ‘‘(sleep-event-state event)’’.  State will be one of the symbols
>      ‘pre-sleep’ or ‘post-wake’.
> --8<---------------cut here---------------end--------------->8---
>
> However, I couldn't find the source code for `sleep-event-state'.
>
> Anyway, I'll definitely try system-sleep.
>

That accessor method is generated here:

(cl-defstruct
    (sleep-event (:type list) :named
                 (:constructor nil)
                 (:constructor make-sleep-event (state)))
  state)

Cheers.