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From: Alan Mackenzie <acm@muc.de>
To: emacs-devel@gnu.org
Subject: Why doesn't Emacs have an `active-timer-p' command, or why can't I find it?
Date: Thu, 11 Nov 2021 20:31:24 +0000	[thread overview]
Message-ID: <YY19nE+b9j35ZLq7@ACM> (raw)

Hello, Emacs.

There doesn't appear to be an easy way in a Lisp program to determine if
a timer object is active.  Something like (active-timer-p TIMER), or
even (timerp TIMER t), where the t is an &optional argument meaning
"active" (a bit like the LIVE parameter in minibufferp).

Does such a function really not exist, or have I somehow not managed to
find it?

If it doesn't exist, what is the reason?  The command timer-list clearly
manages to know this.  The usefulness of active-timer-p is surely
obvious.  (Well, it is to me, at least.)

At the very least, there could be a section in the Elisp manual
documenting why the function doesn't exist.

-- 
Alan Mackenzie (Nuremberg, Germany).



             reply	other threads:[~2021-11-11 20:31 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-11 20:31 Alan Mackenzie [this message]
2021-11-11 20:37 ` Why doesn't Emacs have an `active-timer-p' command, or why can't I find it? Eli Zaretskii
2021-11-11 21:08   ` Alan Mackenzie
2021-11-11 21:24     ` Óscar Fuentes
2021-11-12  2:49       ` Lars Ingebrigtsen
2021-11-12  7:55         ` ๊Unsubscribe Sakesun Roykiattisak
2021-11-12 13:13         ` Why doesn't Emacs have an `active-timer-p' command, or why can't I find it? Rudolf Schlatte
2021-11-12 14:12           ` Filipp Gunbin

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