From debbugs-submit-bounces@debbugs.gnu.org Mon Sep 04 05:54:02 2017 Received: (at submit) by debbugs.gnu.org; 4 Sep 2017 09:54:02 +0000 Received: from localhost ([127.0.0.1]:47708 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1doo4v-00029P-SB for submit@debbugs.gnu.org; Mon, 04 Sep 2017 05:54:02 -0400 Received: from eggs.gnu.org ([208.118.235.92]:40614) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1doo4t-00028v-Jh for submit@debbugs.gnu.org; Mon, 04 Sep 2017 05:54:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1doo4h-00054n-M7 for submit@debbugs.gnu.org; Mon, 04 Sep 2017 05:53:54 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_50,URIBL_BLOCKED autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:58846) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1doo4h-00054h-IW for submit@debbugs.gnu.org; Mon, 04 Sep 2017 05:53:47 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59533) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1doo4Z-0006xt-4l for bug-gnu-emacs@gnu.org; Mon, 04 Sep 2017 05:53:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1doo4R-0004v3-L5 for bug-gnu-emacs@gnu.org; Mon, 04 Sep 2017 05:53:39 -0400 Received: from mail1.bemta6.messagelabs.com ([193.109.254.107]:25473) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1doo4R-0004rC-Aq for bug-gnu-emacs@gnu.org; Mon, 04 Sep 2017 05:53:31 -0400 Received: from [193.109.254.147] by server-3.bemta-6.messagelabs.com id 67/8C-03093-7922DA95; Mon, 04 Sep 2017 09:53:27 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprAIsWRWlGSWpSXmKPExsWi+sWpUne60tp IgxfnGC2+H6hyYPRom2YWwBjFmpmXlF+RwJpx5PlRtoI/mhXds5vYGxhPqHQxcnEICaxhlHjd /YYdznn56QAThHMAyNm9FijDycEmoCjRNmcakM3BISIgLXGyjwUkLCzgJ7HnbztYCYuAisSrf RdZQWxeAS2JpvfTWCBsQYmTM5+A2cwCEhIHX7xgBrGFBOQk7rT9Yp7AyD0LSdksJGULGJlWMa oXpxaVpRbpmuslFWWmZ5TkJmbm6BoamOnlphYXJ6an5iQmFesl5+duYgSGAgMQ7GCcedn/EKM kB5OSKO/9x2sihfiS8lMqMxKLM+KLSnNSiw8xynBwKEnw7lRcGykkWJSanlqRlpkDDEqYtAQH j5II70OQNG9xQWJucWY6ROoUoyvHhtXrvzBxHHi7C0g+ebP9NxNHy1sQ+eXptD9MQix5+XmpU uK8ZSDNAiDNGaV5cKNhEXWJUVZKmJcR6FghnoLUotzMElT5V4ziHIxKwrztIFN4MvNK4C54BX QcE9BxVS/XgBxXkoiQkmpgXNSXU34rTm3Sa8ONbJUxsa2xxRwPnJfon5MJTeuaaHxk+7TExCu d1dtPrFRvT8y7WL6sSe73Opu2v6t+PuW7Mn/RgbTVho03zW+pNTIr/tyvwf38cuum0jg3nstV UrVWHM8P7Je2fpu9Jbv3nJCNEW+ISeyaGraXpyV/RjxdeUD98OW60Bf3lViKMxINtZiLihMBW nG386MCAAA= X-Env-Sender: eda@waniasset.com X-Msg-Ref: server-10.tower-27.messagelabs.com!1504518806!91696332!1 X-Originating-IP: [37.244.66.121] X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=waniasset.com,-,- X-VirusChecked: Checked Received: (qmail 44089 invoked from network); 4 Sep 2017 09:53:27 -0000 Received: from unknown (HELO smtp.waniasset.com) (37.244.66.121) by server-10.tower-27.messagelabs.com with AES256-SHA encrypted SMTP; 4 Sep 2017 09:53:27 -0000 Received: from WCL-EX13MBX-DR.wcl.local (10.45.7.24) by WCL-EX13MBX.wcl.local (10.45.7.22) with Microsoft SMTP Server (TLS) id 15.0.1263.5; Mon, 4 Sep 2017 10:53:24 +0100 Received: from WCL-EX13MBX.wcl.local (10.45.7.22) by WCL-EX13MBX-DR.wcl.local (10.45.7.24) with Microsoft SMTP Server (TLS) id 15.0.1263.5; Mon, 4 Sep 2017 10:53:21 +0100 Received: from wcl-linux04.wcl.local (10.45.7.86) by WCL-EX13MBX.wcl.local (10.45.7.22) with Microsoft SMTP Server (TLS) id 15.0.1263.5 via Frontend Transport; Mon, 4 Sep 2017 10:53:21 +0100 From: Ed Avis To: Subject: 24.5; isearch highlighting slow - suppress for single space character Date: Mon, 4 Sep 2017 10:53:21 +0100 Message-ID: <863782u6we.fsf@waniasset.com> MIME-Version: 1.0 Content-Type: text/plain X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.0 (----) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -4.0 (----) Run Emacs in a fairly large terminal, say 200x200 characters. Go to the end of a buffer with some text in it (long enough to fill the screen) and do C-r SPACE. This is an isearch backwards for the space character. If you have highlighting turned on, Emacs then starts highlighting backwards all the space characters in the buffer. But this can be slow, a noticeable few seconds even on a fast machine. (I think it depends on the vagaries of memory management and possibly Lisp compiling, since it's not always quite that bad; a second attempt takes only about half a second. But still it seems a long time.) A small tweak to isearch would suppress the highlighting when what has been typed so far is just a space character. If the user types space and then C-s or C-r again, to indicate that he or she really does want to search for single spaces, then you can highlight at that point of course. In GNU Emacs 24.5.1 (x86_64-redhat-linux-gnu, GTK+ Version 3.18.9) of 2016-04-11 on buildvm-25.phx2.fedoraproject.org Configured using: `configure --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu --program-prefix= --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64 --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/var/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-dbus --with-gif --with-jpeg --with-png --with-rsvg --with-tiff --with-xft --with-xpm --with-x-toolkit=gtk3 --with-gpm=no build_alias=x86_64-redhat-linux-gnu host_alias=x86_64-redhat-linux-gnu 'CFLAGS=-DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic' LDFLAGS=-Wl,-z,relro' Important settings: value of $LC_COLLATE: C value of $LC_CTYPE: en_GB.UTF-8 value of $LC_MESSAGES: en_GB.UTF-8 value of $LC_MONETARY: en_GB.UTF-8 value of $LC_NUMERIC: en_GB.UTF-8 value of $LC_TIME: en_GB.UTF-8 value of $LANG: en_GB.UTF-8 locale-coding-system: utf-8-unix Major mode: Shell Minor modes in effect: diff-auto-refine-mode: t show-paren-mode: t shell-dirtrack-mode: t tooltip-mode: t mouse-wheel-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t transient-mark-mode: t Recent messages: Wrote /home/eda/git_working/repos/linux/crontab.tradingsystems.wcl-linux-live Finding changes in /home/eda/git_working/repos/linux/crontab.tradingsystems.wcl-linux-live...done Mark set Press C-c C-c when you are done editing. Enter a change comment. Type C-c C-c when done Checking in /home/eda/git_working/repos/linux/crontab.tradingsystems.wcl-linux-live...done To git@wcl-git01.wcl.local:dev/repos.git 1c5ba2f..fe19716 master -> master Mark set [5 times] Quit Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug sendmail smerge-mode pcmpl-x sh-script smie executable dired-aux dired hideshow etags tabify imenu man warnings rect ediff-ptch ediff-merg ediff-wind ediff-diff ediff-mult ediff-help ediff-init ediff-util ediff ispell edmacro kmacro vc-bzr vc-sccs vc-svn vc-cvs vc-rcs python json mule-util log-view nxml-uchnm rng-xsd xsd-regexp rng-cmpct rng-nxml rng-valid rng-loc rng-uri rng-parse nxml-parse rng-match rng-dt rng-util rng-pttrn nxml-ns nxml-mode nxml-outln nxml-rap nxml-util nxml-glyph nxml-enc xmltok log-edit message idna format-spec rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045 ietf-drums mailabbrev mail-utils gmm-utils mailheader pcvs-util add-log diff-mode easy-mmode vc vc-dispatcher cus-edit wid-edit perl-mode dabbrev help-mode cus-start cus-load misearch multi-isearch vc-git sql easymenu view ffap thingatpt url-parse auth-source eieio byte-opt bytecomp byte-compile cl-extra cl-loaddefs cl-lib cconv eieio-core gnus-util mm-util help-fns mail-prsvr password-cache url-vars pcmpl-unix xterm time-date paren server compile shell pcomplete comint ring ansi-color tooltip electric uniquify ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment lisp-mode prog-mode register page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer nadvice loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process dbusbind gfilenotify dynamic-setting system-font-setting font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs) Memory information: ((conses 16 3566802 246952) (symbols 48 28992 0) (miscs 40 1061 7737) (strings 32 83808 42796) (string-bytes 1 3341365) (vectors 16 31594) (vector-slots 8 1520686 341468) (floats 8 437 1264) (intervals 56 500006 936) (buffers 960 186) (heap 1024 138763 8917)) From debbugs-submit-bounces@debbugs.gnu.org Sat May 02 21:41:17 2020 Received: (at 28343) by debbugs.gnu.org; 3 May 2020 01:41:17 +0000 Received: from localhost ([127.0.0.1]:54375 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jV3d7-0003SA-19 for submit@debbugs.gnu.org; Sat, 02 May 2020 21:41:17 -0400 Received: from ted.gofardesign.uk ([67.225.143.91]:42522) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jV3d5-0003Rv-LV for 28343@debbugs.gnu.org; Sat, 02 May 2020 21:41:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=marxist.se; s=default; h=Content-Type:MIME-Version:Message-ID:Date:References: In-Reply-To:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=ElAVcaezyXNGghT0XtKndKKC3PuJeUawv9UvmPosNME=; b=QX8qe8LyKysf1AIOgCmnsNUHUd SUdUscZ9Y2PIsBvLPbE+Zo05lbWs7BAyTmNCfcl5hb+zh8TkWJAUPf08pSaTaVBulAVqmoz6PPUp3 oxoYOVEK+RwXeWK4X97cJHlTeOeTzGIJluXQEWhfxteJ3yy6TlbMCwWoG9L+YwqVZ7iwLbSHDEItH GNaFSV55QoJNhQh8L4xMngwnhnlSIWYrmcP0q/qkyyDHOkhnWiRDMzLecfMJIf2E2hYNFQRheM9j3 bsw6ERMHTNXOKB2pBGFAZE9xXq3eXsRDXbhET3NQ75r6rID90dUBrS4YCtLP5oPNs5Z/N4rUd2+yo 73g31ebw==; Received: from h-4-70-69.a785.priv.bahnhof.se ([155.4.70.69]:35414 helo=localhost) by ted.gofardesign.uk with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1jV3cz-001Hjg-Qb; Sat, 02 May 2020 21:41:10 -0400 From: Stefan Kangas To: Ed Avis Subject: Re: bug#28343: 24.5; isearch highlighting slow - suppress for single space character In-Reply-To: <863782u6we.fsf@waniasset.com> (Ed Avis's message of "Mon, 4 Sep 2017 10:53:21 +0100") References: <863782u6we.fsf@waniasset.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Date: Sun, 03 May 2020 03:41:08 +0200 Message-ID: <87zhap23t7.fsf@stefankangas.se> MIME-Version: 1.0 Content-Type: text/plain X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - ted.gofardesign.uk X-AntiAbuse: Original Domain - debbugs.gnu.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - marxist.se X-Get-Message-Sender-Via: ted.gofardesign.uk: authenticated_id: stefan@marxist.se X-Authenticated-Sender: ted.gofardesign.uk: stefan@marxist.se X-Source: X-Source-Args: X-Source-Dir: X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 28343 Cc: 28343@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -1.0 (-) Ed Avis writes: > Run Emacs in a fairly large terminal, say 200x200 characters. Go to the > end of a buffer with some text in it (long enough to fill the screen) > and do C-r SPACE. This is an isearch backwards for the space character. > If you have highlighting turned on, Emacs then starts highlighting > backwards all the space characters in the buffer. But this can be slow, > a noticeable few seconds even on a fast machine. (I think it depends on > the vagaries of memory management and possibly Lisp compiling, since > it's not always quite that bad; a second attempt takes only about half a > second. But still it seems a long time.) > > A small tweak to isearch would suppress the highlighting when what has > been typed so far is just a space character. If the user types space > and then C-s or C-r again, to indicate that he or she really does want > to search for single spaces, then you can highlight at that point of > course. I'm unable to reproduce this on Emacs 28.0.50 (current master). Are you still seeing this on a recent version of Emacs? If I don't hear back from you within a couple of weeks, I'll just close this bug as unreproducible. Thanks in advance. Best regards, Stefan Kangas From debbugs-submit-bounces@debbugs.gnu.org Sun May 03 17:58:23 2020 Received: (at 28343-done) by debbugs.gnu.org; 3 May 2020 21:58:23 +0000 Received: from localhost ([127.0.0.1]:58260 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jVMcx-00036q-FC for submit@debbugs.gnu.org; Sun, 03 May 2020 17:58:23 -0400 Received: from mail-yb1-f182.google.com ([209.85.219.182]:46219) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jVMcv-00036e-Eq for 28343-done@debbugs.gnu.org; Sun, 03 May 2020 17:58:22 -0400 Received: by mail-yb1-f182.google.com with SMTP id v9so2079459ybq.13 for <28343-done@debbugs.gnu.org>; Sun, 03 May 2020 14:58:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=KHz4zfc96u8pKLl8wqg4EqBk3yix8YjSbKwxbLLwV38=; b=CqSU2AwVQPcZxiOfr1tkddEpXG7l6IaFaBV5veWhTBjqP8lVkkj1Ng0NJEULfooJcz a0DOonFq0nIflcwxCDq1RdXAG9dxyEFGkomkzsUhuSXKaKdDAkdi/fLtFfSPIVgH5lXp ooq8UyqTIW9OX8Zum1twpu3RJrP+VPWDLF2MNaS9ndQx0np2PZ8qgQc0HcFo0MQAFzgU 9CND7UQWli0blQSd/pMYWPm3/nGp1byEaNRidlnp+1zW0tBP7HJFM/s7UQV/6ZE33ZeJ 8jCcEN9qLZ71Y8AudHOfMiN1hF6CSIIAVLpSzjpfiKcyNyhpqGpMCeeBZBRU4g3RzUx6 p9aw== X-Gm-Message-State: AGi0Pua82N6zNkY5VhBuOQmJHyBlHHYo4WnnfkFfKj99wUK0BJsgkyZm qwiC1YghkUYxU+uULAOm/UhuJKpynv0MAVeM3VVR6hvh X-Google-Smtp-Source: APiQypJLjcC+9b/x92F8fpNjm7RybA3YFE7lTG5m5iGU73gM/RnnLPS6bMmZ9eR/Scv+4+F4yPGTi7jcg6LdULpQtcg= X-Received: by 2002:a25:fc08:: with SMTP id v8mr22205471ybd.389.1588543095671; Sun, 03 May 2020 14:58:15 -0700 (PDT) MIME-Version: 1.0 References: <863782u6we.fsf@waniasset.com> <87zhap23t7.fsf@stefankangas.se> In-Reply-To: From: Stefan Kangas Date: Sun, 3 May 2020 23:58:04 +0200 Message-ID: Subject: Re: bug#28343: 24.5; isearch highlighting slow - suppress for single space character To: Ed Avis Content-Type: text/plain; charset="UTF-8" X-Spam-Score: 0.5 (/) X-Debbugs-Envelope-To: 28343-done Cc: 28343-done@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.5 (/) Ed Avis writes: > This does indeed seem better in emacs 26.1. There is a slight pause and then all the space characters on screen get highlighted at once. So the bug can be closed. Thanks, I'm therefore closing this bug now. 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Sun, 3 May 2020 21:25:21 +0000 Received: from MN2PR11MB3663.namprd11.prod.outlook.com ([fe80::c9a9:e615:922b:6eb8]) by MN2PR11MB3663.namprd11.prod.outlook.com ([fe80::c9a9:e615:922b:6eb8%6]) with mapi id 15.20.2958.029; Sun, 3 May 2020 21:25:21 +0000 From: Ed Avis To: Stefan Kangas Subject: Re: bug#28343: 24.5; isearch highlighting slow - suppress for single space character Thread-Topic: bug#28343: 24.5; isearch highlighting slow - suppress for single space character Thread-Index: AQHWIOwW5QOTt0J1zkyb8y0ep8Q5MKiW4Jow Date: Sun, 3 May 2020 21:25:21 +0000 Message-ID: References: <863782u6we.fsf@waniasset.com>,<87zhap23t7.fsf@stefankangas.se> In-Reply-To: <87zhap23t7.fsf@stefankangas.se> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: marxist.se; dkim=none (message not signed) header.d=none;marxist.se; dmarc=none action=none header.from=qmaw.com; x-originating-ip: [82.69.86.123] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: e55da4de-20e6-4e65-7a78-08d7efa87c31 x-ms-traffictypediagnostic: MN2PR11MB3680: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:7219; 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boundary="_000_MN2PR11MB3663FE2905605F5796D13B319DA90MN2PR11MB3663namp_" Content-Language: en-GB X-CFilter-Loop: Reflected X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 28343 X-Mailman-Approved-At: Sun, 03 May 2020 19:43:41 -0400 Cc: "28343@debbugs.gnu.org" <28343@debbugs.gnu.org> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) --_000_MN2PR11MB3663FE2905605F5796D13B319DA90MN2PR11MB3663namp_ Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" This does indeed seem better in emacs 26.1. There is a slight pause and th= en all the space characters on screen get highlighted at once. So the bug = can be closed. --_000_MN2PR11MB3663FE2905605F5796D13B319DA90MN2PR11MB3663namp_ Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="iso-8859-1"
This does indeed seem better in emacs 26.1.  There is a slight pause a= nd then all the space characters on screen get highlighted at once.  S= o the bug can be closed.

--_000_MN2PR11MB3663FE2905605F5796D13B319DA90MN2PR11MB3663namp_-- From unknown Wed Jun 18 23:06:28 2025 Received: (at fakecontrol) by fakecontrolmessage; To: internal_control@debbugs.gnu.org From: Debbugs Internal Request Subject: Internal Control Message-Id: bug archived. Date: Mon, 01 Jun 2020 11:24:06 +0000 User-Agent: Fakemail v42.6.9 # This is a fake control message. # # The action: # bug archived. thanks # This fakemail brought to you by your local debbugs # administrator