From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#38407: 27.0.50; infinite loop with display of large file without newlines Date: Thu, 28 Nov 2019 17:14:34 +0200 Message-ID: <83r21sowx1.fsf@gnu.org> References: <39c498717f8958e7fdc408d4da51d378@webmail.orcon.net.nz> <24031.28277.201123.531348@cochabamba.vanoostrum.org> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="251223"; mail-complaints-to="usenet@blaine.gmane.org" Cc: psainty@orcon.net.nz, 38407@debbugs.gnu.org To: Pieter van Oostrum Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Nov 28 17:22:06 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iaMYP-0013Bb-5K for geb-bug-gnu-emacs@m.gmane.org; Thu, 28 Nov 2019 17:22:05 +0100 Original-Received: from localhost ([::1]:50640 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iaMYN-000327-Rg for geb-bug-gnu-emacs@m.gmane.org; Thu, 28 Nov 2019 11:22:03 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:46875) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iaLeh-0004pP-Iv for bug-gnu-emacs@gnu.org; Thu, 28 Nov 2019 10:24:34 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iaLVY-00050v-KA for bug-gnu-emacs@gnu.org; Thu, 28 Nov 2019 10:15:06 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:53027) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iaLVY-0004zI-Cq for bug-gnu-emacs@gnu.org; Thu, 28 Nov 2019 10:15:04 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iaLVW-0003sa-6S for bug-gnu-emacs@gnu.org; Thu, 28 Nov 2019 10:15:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 28 Nov 2019 15:15:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 38407 X-GNU-PR-Package: emacs Original-Received: via spool by 38407-submit@debbugs.gnu.org id=B38407.157495407814870 (code B ref 38407); Thu, 28 Nov 2019 15:15:02 +0000 Original-Received: (at 38407) by debbugs.gnu.org; 28 Nov 2019 15:14:38 +0000 Original-Received: from localhost ([127.0.0.1]:59000 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iaLV8-0003rm-J0 for submit@debbugs.gnu.org; Thu, 28 Nov 2019 10:14:38 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:37274) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iaLV6-0003rZ-SB for 38407@debbugs.gnu.org; Thu, 28 Nov 2019 10:14:37 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:43519) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iaLUx-0003FL-DP; Thu, 28 Nov 2019 10:14:27 -0500 Original-Received: from [176.228.60.248] (port=3483 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1iaLUu-0007Ie-S8; Thu, 28 Nov 2019 10:14:25 -0500 In-reply-to: <24031.28277.201123.531348@cochabamba.vanoostrum.org> (message from Pieter van Oostrum on Thu, 28 Nov 2019 07:51:33 +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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:172608 Archived-At: > Date: Thu, 28 Nov 2019 07:51:33 +0100 > From: Pieter van Oostrum > Cc: 38407@debbugs.gnu.org > > Normally I wouldn't open such a bizarre file, but I was doing an 'rgrep' on my home directory, and this was one of the files that came up in the grep results. When I was scrolling though the *grep* buffer, I got this problem. Then I decided to just open the file, to eliminate the possibility that grep-mode was one of the causes. > > And yes, I checked it all with emacs -Q. As an aside, using Text mode for such files, and visual-line-mode on top of that, is exactly the opposite of what one should do to make redisplay performance better. Text mode resets bidi-paragraph-direction to nil, which makes redisplay work harder because it needs to find the beginning of the current paragraph each time redisplay starts. And visual-line-mode makes redisplay a bit slower, because of the need to find a suitable point to break the line. So I suggest to use the default mode for visiting JSON files.