bug#81561: 31.0.91; speedbar-window-mode creates stale idle timers

In data venerdì 14 agosto 2026 02:54:28 Ora legale dell’Europa centrale, J.P. 
ha scritto:
> Daniel Mendler via "Bug reports for GNU Emacs, the Swiss army knife of
> 
> text editors" <[email protected]> writes:
> > "J.P." <[email protected]> writes:
> >> P.S. If it's determined that this bug is not in fact directly related to
> >> the introduction of `speedbar-window-mode', perhaps it's better to
> >> revert a56e964941f "Speedbar: no more stale idle timers (bug#81561)" on
> >> Emacs 31 and instead apply any future attempted fixes to master?
> > 
> > The bug is at least exacerbated by speedbar-window-mode. Basically
> > speedbar-window-mode always causes a stale timer. Without window mode I
> > see only few stale timers.
> > 
> > I think using a kill-buffer-hook as Vincenzo proposed in his last patch
> > is the way to go.
> 
> Makes sense. And it complements what `dframe-frame-mode' does with
> `kill-buffer-hook' to perform teardown for `speedbar-frame-mode'. It
> also seems likely (to me) that confining `dframe-set-timer' to
> `speedbar-buffer' proves similarly important because `speedbar-timer-fn'
> can otherwise run in any buffer when the thing fires.
Ciao, 
I couldn't have explained it any better...
I'm glad these simple changes have helped simplify ERC a little bit.

Vincenzo