From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.devel 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 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="12704"; mail-complaints-to="usenet@ciao.gmane.io" To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Nov 11 21:32:17 2021 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mlGk5-0003Cb-32 for ged-emacs-devel@m.gmane-mx.org; Thu, 11 Nov 2021 21:32:17 +0100 Original-Received: from localhost ([::1]:37330 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mlGk3-0007uH-VB for ged-emacs-devel@m.gmane-mx.org; Thu, 11 Nov 2021 15:32:15 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:57376) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mlGjU-00079P-N2 for emacs-devel@gnu.org; Thu, 11 Nov 2021 15:31:40 -0500 Original-Received: from colin.muc.de ([193.149.48.1]:64571 helo=mail.muc.de) by eggs.gnu.org with smtp (Exim 4.90_1) (envelope-from ) id 1mlGjS-0006WT-KG for emacs-devel@gnu.org; Thu, 11 Nov 2021 15:31:40 -0500 Original-Received: (qmail 89846 invoked by uid 3782); 11 Nov 2021 20:31:24 -0000 Original-Received: from acm.muc.de (p4fe159a8.dip0.t-ipconnect.de [79.225.89.168]) (using STARTTLS) by colin.muc.de (tmda-ofmipd) with ESMTP; Thu, 11 Nov 2021 21:31:24 +0100 Original-Received: (qmail 9289 invoked by uid 1000); 11 Nov 2021 20:31:24 -0000 Content-Disposition: inline X-Submission-Agent: TMDA/1.3.x (Ph3nix) X-Primary-Address: acm@muc.de Received-SPF: pass client-ip=193.149.48.1; envelope-from=acm@muc.de; helo=mail.muc.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:279273 Archived-At: 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).