Received: (at 68314) by debbugs.gnu.org; 8 Jan 2024 12:37:28 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Jan 08 07:37:27 2024 Received: from localhost ([127.0.0.1]:35380 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1rMosh-0003Mg-H8 for submit <at> debbugs.gnu.org; Mon, 08 Jan 2024 07:37:27 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:48172) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1rMosd-0003MQ-91 for 68314 <at> debbugs.gnu.org; Mon, 08 Jan 2024 07:37:25 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1rMosR-0006QY-PV for 68314 <at> debbugs.gnu.org; Mon, 08 Jan 2024 07:37:11 -0500 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=nOG5GVzVBK+QAiUC2j20BzDK/s6CA4GyWooTWd7pgtY=; b=mTYfqy5r4yIk COLI/jJhcCITnMlFObaAJic7Wn9X0xTVAgscp0y8pE9q6elK+MsgJu70vQJe1dvPnOsC+7w+dHeYX ArK7YPU0QwW2ZFcG4inodSNQ4WAlWgBj9b7x7KaL1IyX8WWWQR36IHE7YBRgW2LvJ+S63cVVNxJU7 pCFj2Njf7s/DrCvajEJah1GpSACkmjCXqwLdPJUPGUrgaWk14v+EY/4w1/dz8E3qqpWqgJ9Q3/pLf xipu90oA/eluMQqaiQXqnC0oYiZMhB6p8e6N/PP9l0/4ueUhggGvIp26B/VaaMWRFJ7BwcmuFGMl/ uU12uN41ai6r4FBJr6j5dA==; Date: Mon, 08 Jan 2024 14:36:57 +0200 Message-Id: <83cyucq9w6.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: rms@HIDDEN In-Reply-To: <E1rMgZP-0001Ey-QU@HIDDEN> (message from Richard Stallman on Sun, 07 Jan 2024 22:44:59 -0500) Subject: Re: bug#68314: 30.0.50; incorrect redisplay of contents of current line References: <E1rMgZP-0001Ey-QU@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 68314 Cc: 68314 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Richard Stallman <rms@HIDDEN> > Date: Sun, 07 Jan 2024 22:44:59 -0500 > > > and found that the `e' was missing only on the screen -- the buffer > was correct. Therefore I typed DEL. > > This bug in redisplay has been happening every few minutes this > morning. I did not notice it happen yesterday, which surprises me > now. > > This example is the simplest of those I have looked at recent-keys > for. It has NOTHING unusual! It is hard for me to believe that there's such a fundamental problem in redisplay. My suggestion is to use open-termscript to record what the display code sends to the screen, and when the problem happens again, look for the stuff you miss on the screen in the termscript file. Then we will know whether the problem is that redisplay didn't send the correct commands to the screen or that the commands were sent correctly, but were not executed correctly by the terminal driver. > I have a suspicion. > > I get tiny pauses even in typing ordinary input, as if something > time-consuming were running frequently between commands. > > Those tiny pauses could affect how redisplay updates for these > inserted characters, in a random, unpredictable way. How could some processing affect redisplay? If you have an idea how that could happen, please tell, because I cannot imagine how it could happen. It is much easier for me to suspect that your system's video driver or some other system software related to the terminal "swallows" commands sent to the terminal. What happens if you type "M-x redraw-display RET" -- do the "missing" characters come back? What happens if you suspend Emacs and then resume it? > I suspect this bug usually happens in the part of redisplay > that updates the current line onl. Once I typed DEL and > a character two columns leftward was erased. > > On the other hand, sometimes redisplkay fails to rewrite some lines, > below point, and leaves then blank or with old contents. > > The problem seems to happen mainly in mail mode. Did you recently change anything in your system's software, like upgraded some drivers or maybe even moved to a new system? Did you update your terminfo DB or something related to it?
bug-gnu-emacs@HIDDEN:bug#68314; Package emacs.
Full text available.Received: (at submit) by debbugs.gnu.org; 8 Jan 2024 03:45:18 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sun Jan 07 22:45:18 2024 Received: from localhost ([127.0.0.1]:34809 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1rMgZh-0005Pn-JY for submit <at> debbugs.gnu.org; Sun, 07 Jan 2024 22:45:18 -0500 Received: from lists.gnu.org ([2001:470:142::17]:35016) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <rms@HIDDEN>) id 1rMgZe-00051R-J2 for submit <at> debbugs.gnu.org; Sun, 07 Jan 2024 22:45:15 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <rms@HIDDEN>) id 1rMgZS-0007dD-RG for bug-gnu-emacs@HIDDEN; Sun, 07 Jan 2024 22:45:02 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <rms@HIDDEN>) id 1rMgZS-0002wZ-Hl for bug-gnu-emacs@HIDDEN; Sun, 07 Jan 2024 22:45:02 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=Date:Subject:To:From:mime-version:in-reply-to: references; bh=IkwBQ4nb/YITEK3hCEcvHLqkpDxemE1W/I5s0b6WaGU=; b=CUrAwUp33XJcmB BgIakw6LqFZiWJyVZH5FQgfioYgJM84bgUsRZnE1pUGqOadub9EMMi4neaZoJdjo8HibH3Nsf2yig G0psCXuZIXfVCXvNOG8ztPhkzDB8s3l1z6YJMazBnURv6Izhu1rFiTsoC19Xrb89+W45xrDvhyC2E fovs7kib3iu2Sj5ydEId0e71aV/dAAVi13rwf6N87cVUYn3Vuit5pjbuA077pg5o7XhebbOQxaX47 OzcRHRV/QUmNlrMdwze/cd3x5ih4sAeP1b/FqWkO5PXEQPeH9JaAdL1OO5898qzdG4Uc4nrHkKKLf Jfe/nDqMVcE0SU852f2A==; Received: from rms by fencepost.gnu.org with local (Exim 4.90_1) (envelope-from <rms@HIDDEN>) id 1rMgZP-0001Ey-QU; Sun, 07 Jan 2024 22:44:59 -0500 Content-Type: text/plain; charset=Utf-8 From: Richard Stallman <rms@HIDDEN> To: bug-gnu-emacs@HIDDEN Subject: 30.0.50; incorrect redisplay of contents of current line X-Debbugs-Cc: Message-Id: <E1rMgZP-0001Ey-QU@HIDDEN> Date: Sun, 07 Jan 2024 22:44:59 -0500 X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Reply-To: rms@HIDDEN Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Here's the input I typed (at the end of a line containing "US streaming dis-services have deleted many programs. "). Then I saw that the `e' at the end of `article' was missiing. SPC ;; self-insert-command T ;; self-insert-command h ;; self-insert-command i ;; self-insert-command s ;; self-insert-command SPC ;; self-insert-command a ;; self-insert-command r ;; self-insert-command t ;; self-insert-command i ;; self-insert-command c ;; self-insert-command l ;; self-insert-command e ;; self-insert-command SPC ;; self-insert-command g ;; self-insert-command i ;; self-insert-command v ;; self-insert-command e ;; self-insert-command s ;; self-insert-command RET ;; newline m ;; self-insert-command a ;; self-insert-command n ;; self-insert-command y ;; self-insert-command SPC ;; self-insert-command d ;; self-insert-command e ;; self-insert-command t ;; self-insert-command a ;; self-insert-command i ;; self-insert-command l ;; self-insert-command s ;; self-insert-command . ;; self-insert-command ESC DEL ;; backward-kill-word e ;; self-insert-command x ;; self-insert-command a ;; self-insert-command m ;; self-insert-command p ;; self-insert-command l ;; self-insert-command e ;; self-insert-command s ;; self-insert-command . ;; self-insert-command So I tried to fix that C-p ;; previous-line C-e ;; move-end-of-line ESC b ;; backward-word C-b ;; backward-char e ;; self-insert-command C-l ;; recenter-top-bottom DEL ;; delete-backward-char and found that the `e' was missing only on the screen -- the buffer was correct. Therefore I typed DEL. This bug in redisplay has been happening every few minutes this morning. I did not notice it happen yesterday, which surprises me now. This example is the simplest of those I have looked at recent-keys for. It has NOTHING unusual! I have a suspicion. I get tiny pauses even in typing ordinary input, as if something time-consuming were running frequently between commands. Those tiny pauses could affect how redisplay updates for these inserted characters, in a random, unpredictable way. I suspect this bug usually happens in the part of redisplay that updates the current line onl. Once I typed DEL and a character two columns leftward was erased. On the other hand, sometimes redisplkay fails to rewrite some lines, below point, and leaves then blank or with old contents. The problem seems to happen mainly in mail mode. In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 2.24.32, cairo version 1.16.0) of 2024-01-02 built on freetop Repository revision: 1c369263db826a02e01d4209c7b6b8617971c37c Repository branch: master System Description: Trisquel GNU/Linux Nabia (10.0) Configured using: 'configure 'CFLAGS=-O0 -g' --with-gnutls=ifavailable' Configured features: CAIRO DBUS FREETYPE GIF GLIB GPM GSETTINGS HARFBUZZ JPEG JSON LIBOTF LIBSELINUX LIBXML2 M17N_FLT MODULES NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS X11 XDBE XIM XINPUT2 XPM GTK2 ZLIB Important settings: value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix Major mode: RMAIL Minor modes in effect: gpm-mouse-mode: t tooltip-mode: t global-eldoc-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t minibuffer-regexp-mode: t line-number-mode: t transient-mark-mode: t auto-composition-mode: linux auto-encryption-mode: t auto-compression-mode: t abbrev-mode: t Load-path shadows: None found. Features: (bug-reference find-func profiler time-stamp texinfo texinfo-loaddefs arc-mode archive-mode doc-view filenotify jka-compr image-mode exif ffap compare-w log-edit add-log vc-hg vc-git vc-bzr vc-src vc-sccs vc-svn smerge-mode diff-mode vc vc-dispatcher mule-diag noutline outline icons two-column pp shadow emacsbug shortdoc comp-common rmail-spam-filter rmailedit rmailsort undigest kmacro cl-extra parse-time iso8601 vc-cvs vc-rcs log-view easy-mmode pcvs-util mhtml-mode css-mode eww xdg url-queue mm-url gnus nnheader range wid-edit color js c-ts-common cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs sgml-mode facemenu format-spec battery dbus diff help-fns radix-tree mule-util display-line-numbers grep compile etags fileloop generator xref quail epa-mail sh-script rx smie treesit executable shell pcomplete comint ansi-osc ring tabify imenu man ansi-color rect thingatpt help-mode novice project misearch multi-isearch ispell textsec uni-scripts idna-mapping ucs-normalize uni-confusable textsec-check shr pixel-fill kinsoku url-file svg xml dom dabbrev mailalias rmailout rmailkwd qp rmailmm message sendmail yank-media puny rfc822 mml mml-sec epa epg epg-config gnus-util text-property-search time-date mm-decode mm-bodies mm-encode mailabbrev gmm-utils mailheader mail-parse rfc2231 files-x dired-aux dired dired-loaddefs t-mouse term/linux view derived disp-table advice rmailsum rmail rfc6068 rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils finder-inf osm-autoloads info compat-autoloads package browse-url url url-proxy url-privacy url-expand url-methods url-history url-cookie generate-lisp-file url-domsuf url-util mailcap url-handlers url-parse auth-source cl-seq eieio eieio-core cl-macs password-cache json subr-x map byte-opt gv bytecomp byte-compile url-vars cl-loaddefs cl-lib rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel term/x-win x-win term/common-win x-dnd touch-screen tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic indonesian philippine cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese composite emoji-zwj charscript charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp files window text-properties overlay sha1 md5 base64 format env code-pages mule custom widget keymap hashtable-print-readable backquote threads dbusbind inotify dynamic-setting system-font-setting font-render-setting cairo gtk x-toolkit xinput2 x multi-tty move-toolbar make-network-process emacs) Memory information: ((conses 16 711365 165293) (symbols 48 21608 35) (strings 32 121559 15771) (string-bytes 1 2901740) (vectors 16 97591) (vector-slots 8 2218489 87800) (floats 8 283 617) (intervals 56 60611 1987) (buffers 976 93)) [[[ To any NSA and FBI agents reading my email: please consider ]]] [[[ whether defending the US Constitution against all enemies, ]]] [[[ foreign or domestic, requires you to follow Snowden's example. ]]] -- Dr Richard Stallman (https://stallman.org) Chief GNUisance of the GNU Project (https://gnu.org) Founder, Free Software Foundation (https://fsf.org) Internet Hall-of-Famer (https://internethalloffame.org)
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