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 08:49:58 +0000 Message-ID: References: <20210202134950.vybbpf3iewbymfjo.ref@Ergus> <20210202134950.vybbpf3iewbymfjo@Ergus> <87h7mt3qjo.fsf@melete.silentflame.com> 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="11816"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Richard Stallman Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Feb 04 09:51:04 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 1l7aLv-0002ww-UK for ged-emacs-devel@m.gmane-mx.org; Thu, 04 Feb 2021 09:51:03 +0100 Original-Received: from localhost ([::1]:50856 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l7aLu-0000xo-WE for ged-emacs-devel@m.gmane-mx.org; Thu, 04 Feb 2021 03:51:03 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:35582) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l7aKw-0000S4-Ts for emacs-devel@gnu.org; Thu, 04 Feb 2021 03:50:02 -0500 Original-Received: from heytings.org ([95.142.160.155]:36072) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l7aKv-0002eE-9D; Thu, 04 Feb 2021 03:50:02 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20210101; t=1612428598; bh=/Jdt7315suSHB11gBZtL1FJLj+xtNYA9jzjDWSJXwNo=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=e0dBYvvBIv5rANQlOF39QN5roxJ4PYzaTj9XZf9ltuhAzgrHp4GLovcyR4jW5W7Lv n2eG5ad3fJ3K3cD49F33o0GdE68uc2XtUMU9mSoLzmNcTOXjVvLp0gHOTKFOFsVj4+ ttxSSZTZm7mWqe9EGV7xRcUW1u7Aj4AYu2kT3seNl9+f6P2oBzDW+uByCxxU3vqzmt /tDX9aIab3Un99OIXG5kzBU8TgAUuVuSMgsK2KppZQE6SW04962kXrgvqrHdUxJtck 4wmTuY6DWmYhil4V9tN2J16gvhfwMjEbQxCJqnvl2gupS6YuAcQPylpjlPs8nTwo5x /Gu5f69nwcOEg== 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:263859 Archived-At: >> You can easily undo it, however, with a quick C-/. > > I think that is limited to files under a certain size. > Yes, that limit is 'undo-outer-limit', set to 22 MB by default. Unfortunately, when you execute 'revert-buffer' on such a large buffer, you get a warning _after_ the reversion has happened that you cannot undo it anymore: "Warning (undo): Buffer '...' undo info was ... bytes long. The undo info was discarded because it exceeded `undo-outer-limit'." It would perhaps make sense to ask for confirmation _before_ executing the command ("The command '...' will discard undo info, really do it? (yes or no)").