From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: (copy-marker nil) Date: Sat, 12 May 2018 18:06:52 -0400 Message-ID: References: <364c8f2d-06ab-4f81-852f-eb3bac7a0615@easy-emacs.de> <1e55da6a-d791-c613-ac9a-5d9bc57f840f@easy-emacs.de> <0cc6f5df-d980-492c-a6f3-86070a73488c@default> <34886144-0f66-5677-5054-b940cf0f6e76@easy-emacs.de> <7f6fd0c6-f613-9388-10e6-5ca5544d25ae@easy-emacs.de> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1526162733 5584 195.159.176.226 (12 May 2018 22:05:33 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 12 May 2018 22:05:33 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sun May 13 00:05:29 2018 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fHcdt-0001Nj-2h for geh-help-gnu-emacs@m.gmane.org; Sun, 13 May 2018 00:05:29 +0200 Original-Received: from localhost ([::1]:45571 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fHcg0-00060V-6D for geh-help-gnu-emacs@m.gmane.org; Sat, 12 May 2018 18:07:40 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:52855) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fHcfT-00060D-5y for help-gnu-emacs@gnu.org; Sat, 12 May 2018 18:07:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fHcfQ-0007Tx-0X for help-gnu-emacs@gnu.org; Sat, 12 May 2018 18:07:07 -0400 Original-Received: from [195.159.176.226] (port=57587 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fHcfP-0007SS-QA for help-gnu-emacs@gnu.org; Sat, 12 May 2018 18:07:03 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1fHcdE-0000jI-Iw for help-gnu-emacs@gnu.org; Sun, 13 May 2018 00:04:48 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 11 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:waRE2sMsYDh3164ZEqvSRe9g0XE= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:116722 Archived-At: > Well, zero here is a special case. No. You can try it with many other "out of bounds" integers. > But copying a marker out of nil seems not logically. It works just as well as (move-marker m nil) and for the same reasons. A marker *can* point to "nothing" and it's an important property. Stefan