From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings via "Emacs development discussions." Newsgroups: gmane.emacs.devel Subject: Re: feature/icomplete-vertical Date: Sat, 19 Sep 2020 16:19:10 +0000 Message-ID: References: <20200919015957.prffuac2jke3hp6a@Ergus> <20200919061531.oyjlbdvkbeif5fsg@Ergus> <20200919114359.7kph6xt2gdmah2pp@Ergus> <20200919154904.rrabgd37v57qrton@Ergus> Reply-To: Gregory Heytings 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="35583"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Alpine 2.22 (NEB 394 2020-01-19) Cc: Ergus , Eli Zaretskii , casouri@gmail.com, emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Sep 19 18:44:40 2020 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 1kJfya-00099G-Fo for ged-emacs-devel@m.gmane-mx.org; Sat, 19 Sep 2020 18:44:40 +0200 Original-Received: from localhost ([::1]:51940 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kJfyZ-0004dD-FH for ged-emacs-devel@m.gmane-mx.org; Sat, 19 Sep 2020 12:44:39 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:54836) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kJfaC-000519-OB for emacs-devel@gnu.org; Sat, 19 Sep 2020 12:19:29 -0400 Original-Received: from mx.sdf.org ([205.166.94.24]:53270) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kJfa8-00016U-CM; Sat, 19 Sep 2020 12:19:28 -0400 Original-Received: from sdf.org (IDENT:ghe@faeroes.freeshell.org [205.166.94.9]) by mx.sdf.org (8.15.2/8.14.5) with ESMTPS id 08JGJDqa010287 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits) verified NO); Sat, 19 Sep 2020 16:19:14 GMT Original-Received: (from ghe@localhost) by sdf.org (8.15.2/8.12.8/Submit) id 08JGJRoB009506; Sat, 19 Sep 2020 16:19:27 GMT In-Reply-To: Received-SPF: pass client-ip=205.166.94.24; envelope-from=ghe@sdf.org; helo=mx.sdf.org X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/19 04:31:01 X-ACL-Warn: Detected OS = ??? 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_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:256196 Archived-At: > > Yes, hence the question is "why". I suspect it has to do with the way > we insert the extra text and by teaking it we may work around this > problem. > Do you have pointers where one might try to find the "why"? xdisp.c? > > We could/should also consider this as a problem in the redisplay, so > maybe you should file a bug report for it. > It's a well-known problem, with already several bugs filed. > > In any case, your example shows that it's not a new problem introduced > by icomplete-vertical, so fixing it should likely be orthogonal to the > addition of icomplete-vertical. > Indeed. In fact AFAICT so far everyone tries to work-around that bug/feature/limitation/... by doing what we were trying to do, which amounts (as you wrote) to redoing or approximating what redisplay does.