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bug#17392: 24.3.90; cursor blinks faster and faster

From: Michael Heerdegen
Subject: bug#17392: 24.3.90; cursor blinks faster and faster
Date: Sat, 10 May 2014 13:40:26 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.90 (gnu/linux)

Eli Zaretskii <address@hidden> writes:

> See how timers are run by keyboard.c: we first make a copy of the
> timers' list, and then work on that copy.  The comment there says:
>   /* We use copies of the timers' lists to allow a timer to add itself
>      again, without locking up Emacs if the newly added timer is
>      already ripe when added.  */
> Can this implementation detail explain what you see?

I seems related.

> Btw, I don't understand what you say here, it sounds a contradiction:
> > So an idle blinking timer not in timer-idle-list is called from C
> > with timer-event-handler.  At this point, there is already another
> > blinking timer in timer-idle-list.
> So is there a blinking time in timer-idle-list, or isn't there?

There is one blinking timer in timer-idle-list.  But timer-event-handler
is called with a different blinking timer that is not memq in

It seems that the implementation detail you cited leads in our case to
the revival of canceled timers although there haven't been activated
from LISP?


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