From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Dmitry Antipov Newsgroups: gmane.emacs.devel Subject: Using 'register' and ^L Date: Wed, 10 Sep 2014 07:12:09 +0400 Message-ID: <540FC189.3070309@yandex.ru> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1410318780 25228 80.91.229.3 (10 Sep 2014 03:13:00 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 10 Sep 2014 03:13:00 +0000 (UTC) To: Emacs development discussions Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Sep 10 05:12:54 2014 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XRYKw-0002TC-DM for ged-emacs-devel@m.gmane.org; Wed, 10 Sep 2014 05:12:50 +0200 Original-Received: from localhost ([::1]:53000 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XRYKv-0001Qt-LU for ged-emacs-devel@m.gmane.org; Tue, 09 Sep 2014 23:12:49 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:59998) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XRYKc-0001QZ-Go for emacs-devel@gnu.org; Tue, 09 Sep 2014 23:12:37 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XRYKV-00021J-F1 for emacs-devel@gnu.org; Tue, 09 Sep 2014 23:12:30 -0400 Original-Received: from forward6l.mail.yandex.net ([84.201.143.139]:57835) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XRYKV-00020Y-6q for emacs-devel@gnu.org; Tue, 09 Sep 2014 23:12:23 -0400 Original-Received: from smtp6.mail.yandex.net (smtp6.mail.yandex.net [77.88.61.56]) by forward6l.mail.yandex.net (Yandex) with ESMTP id 0710114E10A5 for ; Wed, 10 Sep 2014 07:12:21 +0400 (MSK) Original-Received: from smtp6.mail.yandex.net (localhost [127.0.0.1]) by smtp6.mail.yandex.net (Yandex) with ESMTP id 94AA316404CC for ; Wed, 10 Sep 2014 07:12:21 +0400 (MSK) Original-Received: from unknown (unknown [37.139.80.10]) by smtp6.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id STfURHt9Jt-CHTWgQpt; Wed, 10 Sep 2014 07:12:21 +0400 (using TLSv1.2 with cipher AES128-SHA (128/128 bits)) (Client certificate not present) X-Yandex-Uniq: 99538087-b21e-4489-b3a1-9d12f5ab3da9 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1410318741; bh=qv2L38MhQ4VH158KHHGA5fGLWhuTr0R+/mpiNvIVUvo=; h=Message-ID:Date:From:User-Agent:MIME-Version:To:Subject: Content-Type:Content-Transfer-Encoding; b=mQpyOWr2yDtZFddbqLv3Z9zXNQr3p9RilK4VgqfqL3Nmrh3D2l9uTekFig6RuirGr jnawZWZYhlw9WMXfnJgkQVaNtsgd7R+Kj50dAnigI2DeX9EhpluqYysuUNWy39M8rn pPbQmoG/MNNBvE5SNlQ42cbU7JtjrKeugBp0VA6g= Authentication-Results: smtp6.mail.yandex.net; dkim=pass header.i=@yandex.ru User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 84.201.143.139 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:174136 Archived-At: 1) Is there a reason to use explicit 'register' variables nowadays? This encumbers sources with no measurable benefits; moreover, some GC tracing/debugging techniques assumes that you can take an address of any Lisp_Object, which is effectively blocked by using 'register'. 2) Why still using ^L? It looks like a huge empty space in patches showing as attachment in some e-mail clients, and I'm curious whether someone still uses a printing system relying on ^L page breaks :-). Dmitry