From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Drew Adams" Newsgroups: gmane.emacs.devel Subject: RE: Should `cancel-timer' use `delete' instead of `delq'? Date: Tue, 5 Sep 2006 12:22:45 -0700 Message-ID: References: <33709.128.165.123.18.1157483623.squirrel@webmail.lanl.gov> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1157484230 8858 80.91.229.2 (5 Sep 2006 19:23:50 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Tue, 5 Sep 2006 19:23:50 +0000 (UTC) Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Sep 05 21:23:48 2006 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1GKgW6-00012V-Lc for ged-emacs-devel@m.gmane.org; Tue, 05 Sep 2006 21:23:26 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1GKgW5-0003Tf-SO for ged-emacs-devel@m.gmane.org; Tue, 05 Sep 2006 15:23:25 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1GKgVi-0003Qg-5P for emacs-devel@gnu.org; Tue, 05 Sep 2006 15:23:02 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1GKgVg-0003OC-4y for emacs-devel@gnu.org; Tue, 05 Sep 2006 15:23:01 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1GKgVf-0003Nz-Ug for emacs-devel@gnu.org; Tue, 05 Sep 2006 15:23:00 -0400 Original-Received: from [141.146.126.228] (helo=agminet01.oracle.com) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_3DES_EDE_CBC_SHA:24) (Exim 4.52) id 1GKggT-0000vB-VA for emacs-devel@gnu.org; Tue, 05 Sep 2006 15:34:10 -0400 Original-Received: from rgmsgw02.us.oracle.com (rgmsgw02.us.oracle.com [138.1.186.52]) by agminet01.oracle.com (Switch-3.1.7/Switch-3.1.7) with ESMTP id k85JMvC2012047 for ; Tue, 5 Sep 2006 14:22:58 -0500 Original-Received: from dradamslap (dhcp-amer-csvpn-gw2-141-144-74-150.vpn.oracle.com [141.144.74.150]) by rgmsgw02.us.oracle.com (Switch-3.1.7/Switch-3.1.7) with SMTP id k85JMucb019812 for ; Tue, 5 Sep 2006 13:22:57 -0600 Original-To: X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) In-Reply-To: <33709.128.165.123.18.1157483623.squirrel@webmail.lanl.gov> Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1807 X-Brightmail-Tracker: AAAAAQAAAAI= X-Brightmail-Tracker: AAAAAQAAAAI= X-Whitelist: TRUE X-Whitelist: TRUE X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:59387 Archived-At: So "similar" timers aren't necessarily `equal', and not all timers that are `equal' were created with a call to `run-with-timer' with the same arguments. (Some may have been generated with `timer-create' directly!) In other words, we use `eq' because using `equal' doesn't work (although there are obviously other implementations that could support such a practice). Perhaps what you want is `cancel-function-timers'? Certainly for testing it's quite useful. You could also just store some "mundane" value of `timer-list' somewhere and restore it instead of specifically cancelling anything. Thanks for the info. As I said, I have no problem with delq being used; I just wasn't certain of the intention. Your post clarifies things. The only "use case" I had in mind was what I sent before: the gotcha of inadvertantly calling `run-with-idle-timer' more than once with the same args, without thinking to cancel the previously launched timers.