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: t and nil in pure memory? Date: Fri, 20 Nov 2009 09:09:47 +0100 Organization: Organization?!? Message-ID: <87ocmxfwhg.fsf@lola.goethe.zz> References: <15647250.275901258702126971.JavaMail.www@wwinf4616> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1258704802 10591 80.91.229.12 (20 Nov 2009 08:13:22 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 20 Nov 2009 08:13:22 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Nov 20 09:13:15 2009 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 1NBOad-0000K1-58 for ged-emacs-devel@m.gmane.org; Fri, 20 Nov 2009 09:11:35 +0100 Original-Received: from localhost ([127.0.0.1]:40113 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NBOac-0001G3-Ic for ged-emacs-devel@m.gmane.org; Fri, 20 Nov 2009 03:11:34 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NBOZP-0000d9-9H for emacs-devel@gnu.org; Fri, 20 Nov 2009 03:10:19 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1NBOZK-0000bD-Qo for emacs-devel@gnu.org; Fri, 20 Nov 2009 03:10:18 -0500 Original-Received: from [199.232.76.173] (port=59434 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NBOZK-0000b8-IM for emacs-devel@gnu.org; Fri, 20 Nov 2009 03:10:14 -0500 Original-Received: from mx20.gnu.org ([199.232.41.8]:42336) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1NBOZJ-0006S7-RU for emacs-devel@gnu.org; Fri, 20 Nov 2009 03:10:14 -0500 Original-Received: from lo.gmane.org ([80.91.229.12]) by mx20.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1NBOZJ-0000GJ-5z for emacs-devel@gnu.org; Fri, 20 Nov 2009 03:10:13 -0500 Original-Received: from list by lo.gmane.org with local (Exim 4.50) id 1NBOZG-00084Z-KZ for emacs-devel@gnu.org; Fri, 20 Nov 2009 09:10:10 +0100 Original-Received: from p5b2c258c.dip.t-dialin.net ([91.44.37.140]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 20 Nov 2009 09:10:10 +0100 Original-Received: from dak by p5b2c258c.dip.t-dialin.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 20 Nov 2009 09:10:10 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 24 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: p5b2c258c.dip.t-dialin.net X-Face: 2FEFf>]>q>2iw=B6, xrUubRI>pR&Ml9=ao@P@i)L:\urd*t9M~y1^:+Y]'C0~{mAl`oQuAl \!3KEIp?*w`|bL5qr,H)LFO6Q=qx~iH4DN; i"; /yuIsqbLLCh/!U#X[S~(5eZ41to5f%E@'ELIi$t^ Vc\LWP@J5p^rst0+('>Er0=^1{]M9!p?&:\z]|;&=NP3AhB!B_bi^]Pfkw User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (gnu/linux) Cancel-Lock: sha1:kNPoOAbqWq8IHhvlzrgi9ofJY6o= X-detected-operating-system: by mx20.gnu.org: GNU/Linux 2.6 (newer, 3) X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) 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:117337 Archived-At: "A. Soare" writes: > I did run > > grep -riI "(put[[:blank:]\n]*t[^a-z]" * and > grep -riI "(put[[:blank:]\n]*nil" * > > in ./lisp directory, and I did find what I expected: nothing. > > Could somebody give me an example in which adding properties to `t' > and `nil' may be useful? Well, look in a running Emacs session: (symbol-plist t) => (event-symbol-element-mask (t 0) event-symbol-elements (t) modifier-cache ((0 . t))) (symbol-plist nil) => (event-symbol-element-mask (nil 0) event-symbol-elements (nil) modifier-cache ((0))) So somebody _is_ tacking properties onto t and nil. -- David Kastrup