From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#39390: 28.0.50; prettify-symbols-mode confuses display when start/end faces are different Date: Sun, 02 Feb 2020 21:20:41 +0200 Message-ID: <837e14iynq.fsf@gnu.org> References: <3184164c-5d94-6cb3-aca4-338b710bf97f@thaumogen.net> <83eevcj4ar.fsf@gnu.org> <83blqgj285.fsf@gnu.org> <34ca60a0-3658-0e64-b16f-829d914d4b81@thaumogen.net> Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="41274"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 39390@debbugs.gnu.org To: Raphael 'kena' Poss Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Feb 02 20:22:14 2020 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 1iyKow-000Acy-40 for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 02 Feb 2020 20:22:14 +0100 Original-Received: from localhost ([::1]:58942 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iyKou-0000aN-Rf for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 02 Feb 2020 14:22:12 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59216) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iyKol-0000aF-Dr for bug-gnu-emacs@gnu.org; Sun, 02 Feb 2020 14:22:04 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iyKok-0006Si-Fm for bug-gnu-emacs@gnu.org; Sun, 02 Feb 2020 14:22:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:34584) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iyKok-0006Se-Cb for bug-gnu-emacs@gnu.org; Sun, 02 Feb 2020 14:22:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iyKok-0006RR-8p for bug-gnu-emacs@gnu.org; Sun, 02 Feb 2020 14:22:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 02 Feb 2020 19:22:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 39390 X-GNU-PR-Package: emacs Original-Received: via spool by 39390-submit@debbugs.gnu.org id=B39390.158067126724688 (code B ref 39390); Sun, 02 Feb 2020 19:22:02 +0000 Original-Received: (at 39390) by debbugs.gnu.org; 2 Feb 2020 19:21:07 +0000 Original-Received: from localhost ([127.0.0.1]:40557 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iyKnr-0006Q8-3y for submit@debbugs.gnu.org; Sun, 02 Feb 2020 14:21:07 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:49989) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iyKnm-0006PF-Mw for 39390@debbugs.gnu.org; Sun, 02 Feb 2020 14:21:06 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:54901) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iyKnh-00059k-IB; Sun, 02 Feb 2020 14:20:57 -0500 Original-Received: from [176.228.60.248] (port=1806 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1iyKnf-0006NW-TO; Sun, 02 Feb 2020 14:20:56 -0500 In-reply-to: <34ca60a0-3658-0e64-b16f-829d914d4b81@thaumogen.net> (message from Raphael 'kena' Poss on Sun, 2 Feb 2020 19:28:24 +0100) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 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:175609 Archived-At: > Cc: 39390@debbugs.gnu.org > From: Raphael 'kena' Poss > Date: Sun, 2 Feb 2020 19:28:24 +0100 > > Is there a way to tweak either the configuration > (prettify-symbols-alist) or prog-mode.el to trick it into emitting the > same face for the substitution? It sounds like there's a misunderstanding. prettify-symbols-mode doesn't emit any faces, it "composes" several characters into one or more symbols. The composition process needs that all of the characters to be composed have the same face. That face is put on the characters by font-lock mode, not by prettify-symbols-mode. That is why I suggested to amend the font-lock definitions for the major mode(s) you are using. Without all the characters to be replaced having the same font-lock face, you will not be able to "convince" prettify-symbols-mode to replace them, because the underlying mechanism that examines the characters to be composed stops when the face property changes. > (My opinion is that this bug exists in prog-mode.el and thus a > workaround/fix should be provided at that level, not in a per-mode or > per-user customization.) It isn't a bug, it is a fundamental limitation of the method used by prettify-symbols-mode to replace text with symbols.