From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.devel Subject: Re: Concern about new binding. Date: Thu, 04 Feb 2021 12:26:24 +0000 Message-ID: References: <20210202134950.vybbpf3iewbymfjo.ref@Ergus> <20210202134950.vybbpf3iewbymfjo@Ergus> <87h7mt3qjo.fsf@melete.silentflame.com> <87im78usd9.fsf@gnus.org> <878s84url8.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset=us-ascii Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="27521"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Feb 04 13:28:30 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 1l7dkM-00075G-6t for ged-emacs-devel@m.gmane-mx.org; Thu, 04 Feb 2021 13:28:30 +0100 Original-Received: from localhost ([::1]:49196 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l7dkL-0000eu-59 for ged-emacs-devel@m.gmane-mx.org; Thu, 04 Feb 2021 07:28:29 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57000) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l7diR-00082t-7J for emacs-devel@gnu.org; Thu, 04 Feb 2021 07:26:31 -0500 Original-Received: from heytings.org ([95.142.160.155]:36308) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l7diN-00008b-I0; Thu, 04 Feb 2021 07:26:31 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20210101; t=1612441584; bh=xp2J8U/QUtorved4O9mBoqXRnYSmJ0ZSS3NvZtk0TtI=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=gZNbVA85qsVDko7a9mypurdx7QsnV07du7Rk7DYgIWOtAqGtV4vN3WJP+aYiSjaep wkPy44c4hNdUoze6ZQlywBtZ0sA+rP4oDCPOl26+pvCzRx5LnADsn8CWmPR9yU+H0S ePSHDIkRS3oYHoaDNzPwjJZbGF2m+c+nfBovH6Ry9BA/JqdYxkaFkInL2rC8K/ybzF n/QiQQuW8qij/mX+z6nxgv+DQpdYwezIorfnnF81bWGnBsHOGSJhE5fVzeGqTS0/lw dzWNtIWIfXZYMkFQAHEcx2cB8clR0XXb9F/nToU/zmF3KI/TuskWSwurhIMtcIUkHZ eMsjHLnRughZQ== In-Reply-To: Received-SPF: pass client-ip=95.142.160.155; envelope-from=gregory@heytings.org; helo=heytings.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-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: 2.1.23 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:263869 Archived-At: >> On a side note, I don't understand the "At garbage collection time" in >> the doc string of "undo-outer-limit": >> >> Outer limit on size of undo information for one command. At garbage >> collection time, if the current command has produced more than this >> much undo information, it discards the info and displays a warning. >> This is a last-ditch limit to prevent memory overflow. >> >> It seems to me that this happens when the command is executed, not "at >> garbage collection time". > > That discarding of the undo info happens in a function that compacts > buffers and truncates their undo lists. That function is called from > GC. If you see the message when the command is executed, it simply > means that GC is called immediately after the command or even while the > command still runs. > You are correct. But with the default Emacs values, "gc-cons-threshold" is 800000 and "undo-outer-limit" is 24000000, GC will happen immediately.