From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.help Subject: Re: A ton of marker entry in buffer-und-list Date: Fri, 26 Feb 2021 22:48:51 +0100 Message-ID: <87czwm5wl8.fsf@web.de> References: <72F34690-3033-4CC5-8AFC-89C6158AA65D@gmail.com> <83k0qvqnul.fsf@gnu.org> <834khzq7iv.fsf@gnu.org> <04692508-554F-426B-BFE6-1C4A9B7D6307@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="8424"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:vStB74QHWdO3sLhLDq2/ofna2zM= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Feb 26 22:50:18 2021 Return-path: Envelope-to: geh-help-gnu-emacs@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 1lFl05-00027F-OV for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 26 Feb 2021 22:50:17 +0100 Original-Received: from localhost ([::1]:39662 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lFl03-0008Bi-Al for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 26 Feb 2021 16:50:15 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39612) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lFkyu-0008Ab-JX for help-gnu-emacs@gnu.org; Fri, 26 Feb 2021 16:49:04 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]:56130) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lFkyp-0006k8-BM for help-gnu-emacs@gnu.org; Fri, 26 Feb 2021 16:49:00 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1lFkyn-0000dN-MI for help-gnu-emacs@gnu.org; Fri, 26 Feb 2021 22:48:57 +0100 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -13 X-Spam_score: -1.4 X-Spam_bar: - X-Spam_report: (-1.4 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:128283 Archived-At: Yuan Fu writes: > Thanks, I checked and there is no overlays. (Now I think they are > windows’ point markers.) First: The effect is easy to reproduce: In a fresh emacs -Q, enable winner-mode, and insert a bunch of a's into the buffer. Then `undo' (just hit C-_) until they are all gone, and look at the value of `buffer-undo-list'. There I see the markers. And I also think your analysis is correct: winner-mode adds something to `post-command-hook' that calls `winner-remember' which creates a fresh window-configuration. In post-command-hook! Every time. These are not all kept, no, but their markers (point and mark positions, all different objects, I have checked that), at least some of them, seem to live long enough to get part of buffer-undo-list when undoing. Once they are there, they can't even be garbage collected any more, because they are now referenced by a living lisp object. This is...not so good, right? Michael.