From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Alan Third Newsgroups: gmane.emacs.bugs Subject: bug#41187: 28.0.50; Flipped text Date: Thu, 6 Aug 2020 22:46:39 +0200 (CEST) Message-ID: <20200806204637.GA39555@breton.holly.idiocy.org> References: <9825B211-9633-47CC-9631-A516387ADDB5@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="24455"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 41187@debbugs.gnu.org To: Wasim Abbas Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Aug 06 22:47:18 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 1k3mnD-0006BU-EK for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 06 Aug 2020 22:47:18 +0200 Original-Received: from localhost ([::1]:38254 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k3mnC-0008Bs-Gk for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 06 Aug 2020 16:47:14 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:32880) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k3mn0-0008Bj-Qr for bug-gnu-emacs@gnu.org; Thu, 06 Aug 2020 16:47:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:43436) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k3mn0-0008Mg-IG for bug-gnu-emacs@gnu.org; Thu, 06 Aug 2020 16:47:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1k3mn0-0003GL-Am for bug-gnu-emacs@gnu.org; Thu, 06 Aug 2020 16:47:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Alan Third Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 06 Aug 2020 20:47:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 41187 X-GNU-PR-Package: emacs Original-Received: via spool by 41187-submit@debbugs.gnu.org id=B41187.159674681312525 (code B ref 41187); Thu, 06 Aug 2020 20:47:02 +0000 Original-Received: (at 41187) by debbugs.gnu.org; 6 Aug 2020 20:46:53 +0000 Original-Received: from localhost ([127.0.0.1]:54982 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k3mmq-0003Fx-MZ for submit@debbugs.gnu.org; Thu, 06 Aug 2020 16:46:52 -0400 Original-Received: from mailout-l3b-97.contactoffice.com ([212.3.242.97]:41346) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k3mmn-0003Fi-2M for 41187@debbugs.gnu.org; Thu, 06 Aug 2020 16:46:50 -0400 Original-Received: from smtpauth1.co-bxl (smtpauth1.co-bxl [10.2.0.15]) by mailout-l3b-97.contactoffice.com (Postfix) with ESMTP id 79E76304C; Thu, 6 Aug 2020 22:46:42 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1596746802; s=20200222-6h9o; d=idiocy.org; i=alan@idiocy.org; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version:Content-Type:In-Reply-To; l=748; bh=RJBKtK+yq2YSluHLfuyiP2U9gLYS9AdfLvhk5J+Rq50=; b=LKH5psddOFcUzGLwBz9XybD2YhQe6uD24/0FisPxvXi4rbbzCX7hZ3wygMeNPnZq Vujp0BAQgDS2aqVhjzmMe6QLW7FHojMUHWoR51gTNNycTkXzmAuilx4RLJ08owqlDnI X6NVA7KqhDcIe2p6QOPgCuxz7/HI/4GXoBMwevf/7mauDusogOigbPnNkRT48/ibtKg Zt3wRUt5Sb6OqkEluJBT0ZGX0grHYLnjI3d6JAPh++kFT6p7AgJkuoZTkURZCZecVMp NN6fPeBY6A8YCOVNZMJtD8IMeR0+m9iMeDdxMVvjqe/Rt61UnwHatQjJyLl8EHvaXwP u4UYaFcOLw== Original-Received: by smtp.mailfence.com with ESMTPA ; Thu, 6 Aug 2020 22:46:38 +0200 (CEST) Original-Received: by breton.holly.idiocy.org (Postfix, from userid 501) id 4E9F520243AF58; Thu, 6 Aug 2020 21:46:37 +0100 (BST) Mail-Followup-To: Alan Third , Wasim Abbas , 41187@debbugs.gnu.org Content-Disposition: inline In-Reply-To: <9825B211-9633-47CC-9631-A516387ADDB5@gmail.com> X-ContactOffice-Account: com:241649512 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:184210 Archived-At: On Mon, May 11, 2020 at 01:00:57PM +0100, Wasim Abbas wrote: > I am seeing this issue on emacs head. The text randomly flips > vertically. Very hard to reproduce. But if you open a very long > C/C++ file like > https://github.com/KhronosGroup/Vulkan-Headers/blob/master/include/vulkan/vulkan_core.h > > and keep moving around the buffer, cut 100ish lines and paste in > another location and then move around again. You might hit the > issue. I'm short on ideas with this, but can you tell whether the text that displays upside down is text that was already on screen (and therefore has probably been copied), or is newly drawn? -- Alan Third