From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#50660: 28.0.50; Text artifacting when the cursor moves over text under mouse face that originally displayed a box Date: Tue, 21 Sep 2021 15:34:48 +0800 Message-ID: <87a6k62xgn.fsf@yahoo.com> References: <87czp6ysw7.fsf.ref@yahoo.com> <87czp6ysw7.fsf@yahoo.com> <87y27uro4c.fsf@gnus.org> <877dfdz9ni.fsf@yahoo.com> <831r5l5d6d.fsf@gnu.org> <87h7egy8jo.fsf@yahoo.com> <838rzs4i09.fsf@gnu.org> <87fsu06oxi.fsf@yahoo.com> <83ee9j3ju3.fsf@gnu.org> <834kaf3ets.fsf@gnu.org> <8335pz3dli.fsf@gnu.org> <87r1dj4q4m.fsf@yahoo.com> <83zgs71su7.fsf@gnu.org> <87k0jb4k5l.fsf@yahoo.com> <83sfxz1pw0.fsf@gnu.org> <87ee9j4i8y.fsf@yahoo.com> <83o88n1l1f.fsf@gnu.org> <87pmt23gqg.fsf@yahoo.com> <8335py1mqm.fsf@gnu.org> Reply-To: Po Lu Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="30162"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: larsi@gnus.org, 50660@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Sep 21 09:36:14 2021 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 1mSaK5-0007by-MP for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 21 Sep 2021 09:36:13 +0200 Original-Received: from localhost ([::1]:58774 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mSaK3-0007aC-5j for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 21 Sep 2021 03:36:11 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59318) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mSaJu-0007WL-7f for bug-gnu-emacs@gnu.org; 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X-Sonic-MF: Original-Received: from sonic.gate.mail.ne1.yahoo.com by sonic309.consmr.mail.ne1.yahoo.com with HTTP; Tue, 21 Sep 2021 07:34:56 +0000 Original-Received: by kubenode514.mail-prod1.omega.sg3.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 38cca86377cf9b63ce495ce402ae59ab; Tue, 21 Sep 2021 07:34:51 +0000 (UTC) In-Reply-To: <8335py1mqm.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 21 Sep 2021 09:11:45 +0300") X-Mailer: WebService/1.1.19043 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo 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:214918 Archived-At: Eli Zaretskii writes: > When the cursor moves, w->phys_cursor.x is recomputed. AFAIR, in this > case we perform the usual redisplay (which updates w->phys_cursor), > and then reapply mouse-face, so show_mouse_face should be called > again. But you can easily establish if I'm right by running Emacs in > a debugger with a breakpoint in show_mouse_face. Let me know if you > find something unexpected or need help in interpreting the findings. Interestingly enough, I don't see show_mouse_face being called when the cursor moves within the highlighted area; I only see it called when the highlight itself changes, such as when the mouse pointer moves into the mouse face. Let me know if you need any more information from me to debugging this; I will probably be unable to debug this myself for the next day or two. Thanks!