From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#18793: 24.4; zero width rectangular selection displaces text Date: Fri, 06 May 2022 14:44:49 +0300 Message-ID: <83h76228cu.fsf@gnu.org> References: <82ppdk41k5.fsf@gmail.com> <87fslop1af.fsf@gnus.org> <837d702b1w.fsf@gnu.org> <87czgrnei8.fsf@gnus.org> <83k0az0wfz.fsf@gnu.org> <878rreor92.fsf@gnus.org> <83ilqi29ic.fsf@gnu.org> <87sfpmnben.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="22216"; mail-complaints-to="usenet@ciao.gmane.io" Cc: carlosjosepita@gmail.com, monnier@iro.umontreal.ca, 18793@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri May 06 13:46:31 2022 Return-path: Envelope-to: geb-bug-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 1nmwPn-0005Ur-I0 for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 06 May 2022 13:46:31 +0200 Original-Received: from localhost ([::1]:44118 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nmwPm-00012P-Me for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 06 May 2022 07:46:30 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:35830) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nmwPM-0000yF-2Q for bug-gnu-emacs@gnu.org; Fri, 06 May 2022 07:46:04 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:53401) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nmwPL-00087h-QC for bug-gnu-emacs@gnu.org; Fri, 06 May 2022 07:46:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1nmwPL-0002rJ-L0 for bug-gnu-emacs@gnu.org; Fri, 06 May 2022 07:46:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 06 May 2022 11:46:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18793 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: confirmed Original-Received: via spool by 18793-submit@debbugs.gnu.org id=B18793.16518375117851 (code B ref 18793); Fri, 06 May 2022 11:46:03 +0000 Original-Received: (at 18793) by debbugs.gnu.org; 6 May 2022 11:45:11 +0000 Original-Received: from localhost ([127.0.0.1]:47292 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nmwOU-00022B-KF for submit@debbugs.gnu.org; Fri, 06 May 2022 07:45:11 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:42300) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nmwOS-0001vC-ST for 18793@debbugs.gnu.org; Fri, 06 May 2022 07:45:09 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:43026) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nmwON-0007je-DO; Fri, 06 May 2022 07:45:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=e43nv6nDiBETPqNkdYHco05tyHqnZM/OHOwidUueI+s=; b=Pc/WbtZ2ia7W 9aviV7sxBVHpBv4yZRyBLMQYTmbuOK2E4D6ojh7I7IDGch+BLxKmsKC+M+MrV1H2SNPobVFopuR2I AgQyOS+M0eFAyh0/XDKJb1H1svrCG2i5cfoXKg4eJo1j2WRoVPFU4WfOlJJbW4PEhsLKOAxgB1W00 9ppOu+FYIl0WmvLRlgKKV15f3VsyaiotCRL7PnxMfSEcKas9wVxPC5dLW90vqirgDHtDJ5mcLJa4Y CQFngfp+vpx/6NOlMKPfxWmTtC6vTPZ8UmkIWasOkYh2IbL9I2Hlj3XBPNAw7Uxvyqau81vs+2tpl bR3h03BsPtaZUjByOgvdaw==; Original-Received: from [87.69.77.57] (port=3896 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nmwOM-00072p-Sl; Fri, 06 May 2022 07:45:03 -0400 In-Reply-To: <87sfpmnben.fsf@gnus.org> (message from Lars Ingebrigtsen on Fri, 06 May 2022 13:33:20 +0200) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:231496 Archived-At: > From: Lars Ingebrigtsen > Cc: monnier@iro.umontreal.ca, carlosjosepita@gmail.com, 18793@debbugs.gnu.org > Date: Fri, 06 May 2022 13:33:20 +0200 > > Eli Zaretskii writes: > > > It might be better and easier to introduce a defcustom that disables > > the visualization of zero-width rectangles. Was that considered as a > > solution to this issue? > > I think we wanted to keep that? I'm not sure. This was supposed to be a nifty feature. If some users are annoyed by its effect, the easy way to handle that is to let those users disable the cause of the annoyance. After all, we don't show anything comparable for non-rectangular regions, do we? > I'm not suggesting that it's worth implementing something as complex as > this just for this feature, but like I said -- I think something like > this may be useful, in general, for marking things, and if we had it, it > would be natural to use it here, too. What other uses could this have, except fill-column indication, which is another minor feature? Adding capabilities to the Emacs display that operate on sub-character-cell resolution will mean serious complications. For example, what would we do when displaying color Emoji at that place? Or what about images? Or what if the character in question is currently highlighted by mouse-face? IOW, I'm asking whether these marginal features are worth a serious surgery and complications in the display engine, which currently has the canvas-based design?