From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: font-log Date: Fri, 23 May 2008 13:03:32 +0200 Message-ID: <85iqx5e0zf.fsf@lola.goethe.zz> References: <85prrdh6c1.fsf@lola.goethe.zz> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1211540642 22035 80.91.229.12 (23 May 2008 11:04:02 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 23 May 2008 11:04:02 +0000 (UTC) Cc: emacs-devel@gnu.org To: bob@rattlesnake.com Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri May 23 13:04:40 2008 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1JzV4d-0001yX-1g for ged-emacs-devel@m.gmane.org; Fri, 23 May 2008 13:04:35 +0200 Original-Received: from localhost ([127.0.0.1]:54466 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JzV3s-0003MO-LT for ged-emacs-devel@m.gmane.org; Fri, 23 May 2008 07:03:48 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1JzV3g-0003IC-TW for emacs-devel@gnu.org; Fri, 23 May 2008 07:03:36 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1JzV3f-0003HT-Lz for emacs-devel@gnu.org; Fri, 23 May 2008 07:03:36 -0400 Original-Received: from [199.232.76.173] (port=51532 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JzV3f-0003HO-FH for emacs-devel@gnu.org; Fri, 23 May 2008 07:03:35 -0400 Original-Received: from mail-in-04.arcor-online.net ([151.189.21.44]:54206) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1JzV3f-0004fg-3n for emacs-devel@gnu.org; Fri, 23 May 2008 07:03:35 -0400 Original-Received: from mail-in-18-z2.arcor-online.net (mail-in-18-z2.arcor-online.net [151.189.8.35]) by mail-in-04.arcor-online.net (Postfix) with ESMTP id 8051F17F6EF; Fri, 23 May 2008 13:03:33 +0200 (CEST) Original-Received: from mail-in-16.arcor-online.net (mail-in-16.arcor-online.net [151.189.21.56]) by mail-in-18-z2.arcor-online.net (Postfix) with ESMTP id 6D6D75102D2; Fri, 23 May 2008 13:03:33 +0200 (CEST) Original-Received: from lola.goethe.zz (dslb-084-061-024-152.pools.arcor-ip.net [84.61.24.152]) by mail-in-16.arcor-online.net (Postfix) with ESMTP id 45E8D236E44; Fri, 23 May 2008 13:03:33 +0200 (CEST) Original-Received: by lola.goethe.zz (Postfix, from userid 1002) id A3ADB1C46131; Fri, 23 May 2008 13:03:32 +0200 (CEST) In-Reply-To: (Robert J. Chassell's message of "Fri, 23 May 2008 10:55:15 +0000 (UTC)") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) X-Virus-Scanned: ClamAV 0.92.1/7220/Fri May 23 04:08:41 2008 on mail-in-16.arcor-online.net X-Virus-Status: Clean X-detected-kernel: by monty-python.gnu.org: Linux 2.4-2.6 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:97575 Archived-At: "Robert J. Chassell" writes: > I find it perfectly reasonable. "nil" does not mean "don't log > the fonts" but rather "the font-log contains nothing yet". As you > say: just like buffer-undo-list. > > As a user, I pay attention to the command, `font-show-log', and > figure that the variable follows it. Variables have DOC strings for a reason. > The variable `buffer-undo-list' is wrong, too; nil should turn the > feature off not on. Logging is on iff (listp buffer-undo-list) is t. > I understand the list contains nothing until you enable it; but that > is irrelevant. The list must contain nothing _after_ you enabled it. And that is relevant. So it is natural to mark the list as inactive by not making it a list. t accomplishes that. nil doesn't. > Fortunately, neither variable is evaluated often and their default > global values can get away with being t. The default global value for buffer-undo-list is nil. -- David Kastrup, Kriemhildstr. 15, 44793 Bochum