From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Performance degradation from long lines Date: Sat, 13 Jul 2019 09:31:02 -0400 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 Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="70659"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) Cc: Phil Sainty , mithraeum@protonmail.com, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Jul 13 15:31:21 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 1hmI7U-000IFM-9d for ged-emacs-devel@m.gmane.org; Sat, 13 Jul 2019 15:31:20 +0200 Original-Received: from localhost ([::1]:55378 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hmI7S-0001u0-J9 for ged-emacs-devel@m.gmane.org; Sat, 13 Jul 2019 09:31:18 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:53615) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hmI7L-0001tu-8I for emacs-devel@gnu.org; Sat, 13 Jul 2019 09:31:12 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hmI7K-000470-Ck for emacs-devel@gnu.org; Sat, 13 Jul 2019 09:31:11 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:18758) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hmI7H-000418-41; Sat, 13 Jul 2019 09:31:07 -0400 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id E450910089B; Sat, 13 Jul 2019 09:31:04 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id CA33B1005CA; Sat, 13 Jul 2019 09:31:03 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1563024663; bh=Z93YthG5QmNhL4MGu2HNXE58UDdLhqvOeDtydt9s9TQ=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=AXISqmmLzejFO12psaRuEI3YRfFtQAkkbXA+QpH3vpYnZTj0AtP8ReeS7lynj8XoG Ad/v68ELj+r9uLSt2cbcDwtM6Qz02CX4CHTM8A6e+QB2x/vhXz9E37ICRL7aLZ2bNr jREA6TRq+W0IoDVj35cpJLvpxgvXXO/vDbc++2OI3Ab8UKmUOEwEu4AJEyXIZIseax MvZj8B0Xln1THuVXP2hDr4O2/t5aKzx2Uan5mdwfmZCfLaXZJd0QuMMT5Hja7/s/dK +rLmzMtHqFnQJLlus3RUb3Z0h3SjJWBmgKdQwgB9kyvHiTbygw1xz2HXly5PeonGmB +hdJKehSFhpJQ== Original-Received: from pastel (104-222-123-229.cpe.teksavvy.com [104.222.123.229]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 8FCCC12059A; Sat, 13 Jul 2019 09:31:03 -0400 (EDT) In-Reply-To: <83d0ie1clx.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 13 Jul 2019 12:56:58 +0300") X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 132.204.25.50 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:238563 Archived-At: >> 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 "--". Stefan