From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Kangas Newsgroups: gmane.emacs.devel Subject: Re: Performance degradation from long lines Date: Sat, 13 Jul 2019 15:43:08 +0200 Message-ID: References: <20190107065207.21793.53271@vcs0.savannah.gnu.org> <20190107065208.BA36C21736@vcs0.savannah.gnu.org> <16bb3884-c2de-b178-afe8-0b13a8b116a8@orcon.net.nz> <3f78c29c0c7c01e21180be5fe4f9e70a@webmail.orcon.net.nz> <11eaa87e-b4e4-2cf8-e9d1-658757b97ffe@orcon.net.nz> <83muhi1hoc.fsf@gnu.org> <1a2d94be-a73a-7934-4ce8-5b3c4e819645@orcon.net.nz> <83d0ie1clx.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="120459"; mail-complaints-to="usenet@blaine.gmane.org" Cc: Phil Sainty , Eli Zaretskii , mithraeum@protonmail.com, emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Jul 13 15:43:36 2019 Return-path: Envelope-to: ged-emacs-devel@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 1hmIJL-000V7J-Ri for ged-emacs-devel@m.gmane.org; Sat, 13 Jul 2019 15:43:35 +0200 Original-Received: from localhost ([::1]:55392 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hmIJD-0004Ek-JP for ged-emacs-devel@m.gmane.org; Sat, 13 Jul 2019 09:43:27 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57030) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hmIJA-0004EQ-0g for emacs-devel@gnu.org; Sat, 13 Jul 2019 09:43:24 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hmIJ9-0000xy-49 for emacs-devel@gnu.org; Sat, 13 Jul 2019 09:43:23 -0400 Original-Received: from mail-wm1-f65.google.com ([209.85.128.65]:35191) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hmIJ7-0000wI-M9; Sat, 13 Jul 2019 09:43:21 -0400 Original-Received: by mail-wm1-f65.google.com with SMTP id l2so11240001wmg.0; Sat, 13 Jul 2019 06:43:21 -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:content-transfer-encoding; bh=ZsMVS6iEajif4Y0jo5CVQ7784SrPheQ/+NjQmjXbC3A=; b=Rya5T4JFSglv6VuW3IEdSH/qvw4JQJQfx9z1OX9uLqiZaqxKlxeG2TROODFpCuGCYb UTDw0GwpVa3rn+lHIdmoz+Eud/nh3ZprYrh2wDL1Gq6vxzVGNeZom56y6AtjT1Ii5sXM ibyeB8Eypr+rhjb4jHVRovQ4WZxHATGYwnXxaNzUGwCmiIdSA/uoJCJ/w2CDfH2ibOT+ IVHgvtx+8YzIKZxZ/Da0yE6FFLkpEaNoj8f7hiRXttCJa/L6+0bz2XFx7SDHjdmqv+JJ GRWIcFsCxmeYfq47tygvDI3pUrwmFzYMBOaMNfC73wsfmOPHf073WjMAPqNlg7YnaLDy 3w9w== X-Gm-Message-State: APjAAAW3k7JbYsPm+KdCKDWpauKGGvmt9mdaac43ObLXfVsaL0SmII02 1da6D/Q1r6GqP3kxM/jcvvTRMoGK5//LcKnjcyI= X-Google-Smtp-Source: APXvYqzTyJCJcBpeHG2SUZydUI0VDI2oKvBPnwID3EJ+v5mY9C/q67uoliyCMx6sGWAFmrejaveK1lV+BYgZ9bV2uMg= X-Received: by 2002:a7b:c04f:: with SMTP id u15mr14685765wmc.106.1563025400112; Sat, 13 Jul 2019 06:43:20 -0700 (PDT) In-Reply-To: X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.128.65 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:238564 Archived-At: Stefan Monnier writes: > >> That sounds good to me. I wasn't aware that nil was an invalid value > >> for bidi-display-reordering. > > > > It isn't invalid. It is useful for debugging the display code, but > > using it in production session is dangerous, because it causes the > > code to execute control-flow paths that aren't supported in > > general-purpose usage. > > How 'bout we rename it to clarify it. > The new name could include "debug", "internal" and/or "--". It should probably be "-internal", according to (info "(elisp)Tips for Defining") =E2=80=98...-internal=E2=80=99 The variable is intended for internal use and is defined in C code. (Emacs code contributed before 2018 may follow other conventions, which are being phased out.) Best regards, Stefan Kangas