From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Lennart Borgman (gmail)" Newsgroups: gmane.emacs.devel Subject: Re: Sparse key maps garbage? Date: Sun, 31 Aug 2008 14:17:37 +0200 Message-ID: <48BA8BE1.7010006@gmail.com> References: <48B9DB4A.5010203@gmail.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1220185085 28133 80.91.229.12 (31 Aug 2008 12:18:05 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 31 Aug 2008 12:18:05 +0000 (UTC) Cc: Emacs Devel To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Aug 31 14:18:59 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 1KZltQ-00056M-RU for ged-emacs-devel@m.gmane.org; Sun, 31 Aug 2008 14:18:57 +0200 Original-Received: from localhost ([127.0.0.1]:35779 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KZlsR-0005IF-LR for ged-emacs-devel@m.gmane.org; Sun, 31 Aug 2008 08:17:55 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KZlsN-0005Ht-IR for emacs-devel@gnu.org; Sun, 31 Aug 2008 08:17:51 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KZlsL-0005Hg-9T for emacs-devel@gnu.org; Sun, 31 Aug 2008 08:17:50 -0400 Original-Received: from [199.232.76.173] (port=36453 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KZlsL-0005Hd-3i for emacs-devel@gnu.org; Sun, 31 Aug 2008 08:17:49 -0400 Original-Received: from ch-smtp02.sth.basefarm.net ([80.76.149.213]:42108) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1KZlsK-0007MC-NH for emacs-devel@gnu.org; Sun, 31 Aug 2008 08:17:48 -0400 Original-Received: from c83-254-151-87.bredband.comhem.se ([83.254.151.87]:60349 helo=[127.0.0.1]) by ch-smtp02.sth.basefarm.net with esmtp (Exim 4.68) (envelope-from ) id 1KZlsI-0002OU-9N; Sun, 31 Aug 2008 14:17:47 +0200 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.9) Gecko/20071031 Thunderbird/2.0.0.9 Mnenhy/0.7.5.666 In-Reply-To: X-Enigmail-Version: 0.95.7 X-Antivirus: avast! (VPS 080830-0, 2008-08-30), Outbound message X-Antivirus-Status: Clean X-Originating-IP: 83.254.151.87 X-Scan-Result: No virus found in message 1KZlsI-0002OU-9N. X-Scan-Signature: ch-smtp02.sth.basefarm.net 1KZlsI-0002OU-9N 954bf2c9b564979f44b3d0b96e989258 X-detected-kernel: by monty-python.gnu.org: Linux 2.6? (barebone, rare!) 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:103310 Archived-At: Stefan Monnier wrote: >> If you do > >> (defvar my-sparse-map (make-sparse-keymap)) >> (define-key my-sparse-map [f4] nil) > >> then there will be an entry with f4 in my-sparse-keymap. I do not think >> that is used for anything. Is it? Should it be there? > > Actually, IIRC it's (been) used at some places to create a place holder > in the keymap which is later on replaced with the actual binding. > But I do wonder why you care, I was looking a bit at how to undefine a key, for example at local-unset-key. So what I really wondered was how do you undefine a key? Is there a standard way to do that? > PS: Some other issues have to do with the delicate treatment of nil > bindings w.r.t inheritance: a nil binding will hide any other binding in > the parent(s). >