From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.devel Subject: Re: [Patch]: Allow overlay arrows to be inserted before the text at column zero rather than splatting it. Date: Sun, 18 Aug 2019 19:43:40 +0000 Message-ID: <20190818194340.GE31509@ACM> References: <20190818134804.GA31509@ACM> <83mug6mtjy.fsf@gnu.org> <20190818161530.GB31509@ACM> <83imqumo7i.fsf@gnu.org> <20190818184356.GC31509@ACM> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="68142"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Mutt/1.10.1 (2018-07-13) Cc: Eli Zaretskii , Emacs developers To: Noam Postavsky Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Aug 18 21:44:21 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hzR6C-000Hcn-Tl for ged-emacs-devel@m.gmane.org; Sun, 18 Aug 2019 21:44:21 +0200 Original-Received: from localhost ([::1]:42684 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hzR6B-0003PV-2S for ged-emacs-devel@m.gmane.org; Sun, 18 Aug 2019 15:44:19 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57156) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hzR5c-0003PP-Dn for emacs-devel@gnu.org; Sun, 18 Aug 2019 15:43:45 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hzR5b-00012D-Do for emacs-devel@gnu.org; Sun, 18 Aug 2019 15:43:44 -0400 Original-Received: from colin.muc.de ([193.149.48.1]:22122 helo=mail.muc.de) by eggs.gnu.org with smtp (Exim 4.71) (envelope-from ) id 1hzR5b-00011a-3y for emacs-devel@gnu.org; Sun, 18 Aug 2019 15:43:43 -0400 Original-Received: (qmail 3906 invoked by uid 3782); 18 Aug 2019 18:50:59 -0000 Original-Received: from acm.muc.de (p4FE153BA.dip0.t-ipconnect.de [79.225.83.186]) by colin.muc.de (tmda-ofmipd) with ESMTP; Sun, 18 Aug 2019 20:50:56 +0200 Original-Received: (qmail 1175 invoked by uid 1000); 18 Aug 2019 19:43:40 -0000 Content-Disposition: inline In-Reply-To: X-Delivery-Agent: TMDA/1.1.12 (Macallan) X-Primary-Address: acm@muc.de X-detected-operating-system: by eggs.gnu.org: FreeBSD 9.x [fuzzy] X-Received-From: 193.149.48.1 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.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:239448 Archived-At: Hello, Noam. On Sun, Aug 18, 2019 at 15:30:11 -0400, Noam Postavsky wrote: > On Sun, 18 Aug 2019 at 14:44, Alan Mackenzie wrote: > > I don't think there's anything else in Emacs at the moment that could > > take its place. The essence here is being able to insert "=>" onto the > > display _without_ disturbing the horizontal alignment, as needed by > > debuggers. Maybe, in addition to before-strings and after-strings we > > need "overlay-strings" (with a better name than that), which would cover > > up the underlying text. Or do we already have something like that? > I think the 'display' property would work for that. Yes. Thanks! I didn't know that. So we could supersede the (current) overlay arrow with a mechanism using the display text property or overlay. -- Alan Mackenzie (Nuremberg, Germany).