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#40007: 28.0.50; Emacs gets very slow when displaying a long line Date: Tue, 10 Mar 2020 16:40:12 +0200 Message-ID: <831rq0b7eb.fsf@gnu.org> References: Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="108649"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 40007@debbugs.gnu.org To: Jan Synacek Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Mar 10 15:41:13 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 1jBg4G-000S8q-LL for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 10 Mar 2020 15:41:12 +0100 Original-Received: from localhost ([::1]:34462 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jBg4F-0006iR-NO for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 10 Mar 2020 10:41:11 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:45043) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jBg47-0006h7-AZ for bug-gnu-emacs@gnu.org; Tue, 10 Mar 2020 10:41:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jBg46-0003IN-Ds for bug-gnu-emacs@gnu.org; Tue, 10 Mar 2020 10:41:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:47081) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1jBg46-0003IG-Ap for bug-gnu-emacs@gnu.org; Tue, 10 Mar 2020 10:41:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jBg46-0007vx-83 for bug-gnu-emacs@gnu.org; Tue, 10 Mar 2020 10:41:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 10 Mar 2020 14:41:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 40007 X-GNU-PR-Package: emacs Original-Received: via spool by 40007-submit@debbugs.gnu.org id=B40007.158385121930440 (code B ref 40007); Tue, 10 Mar 2020 14:41:02 +0000 Original-Received: (at 40007) by debbugs.gnu.org; 10 Mar 2020 14:40:19 +0000 Original-Received: from localhost ([127.0.0.1]:53054 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jBg3P-0007uo-5Z for submit@debbugs.gnu.org; Tue, 10 Mar 2020 10:40:19 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:57342) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jBg3N-0007uW-CY; Tue, 10 Mar 2020 10:40:17 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:36981) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1jBg3I-0002Hs-2m; Tue, 10 Mar 2020 10:40:12 -0400 Original-Received: from [176.228.60.248] (port=1144 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jBg3H-0006JF-DX; Tue, 10 Mar 2020 10:40:11 -0400 In-Reply-To: (message from Jan Synacek on Tue, 10 Mar 2020 10:48:24 +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:177138 Archived-At: merge 40007 13675 thanks > From: Jan Synacek > Date: Tue, 10 Mar 2020 10:48:24 +0100 > > > 1) emacs -Q > 2) M-x shell > 3) execute a program that displays a single line, about ~193000 > characters long > > I accidentaly wrote a scheme program that dumped an entire file as a > single line, about 193k characters long, into the shell buffer. Emacs' > reponse latency becomes *very* slow, especially when navigating the > point over the long line. This is bug#13675 (and others that were merged with it). We now have so-long-mode to alleviate some of the problems.