From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.devel Subject: Re: Making a key undefined again Date: Mon, 25 Oct 2021 23:27:11 +0000 Message-ID: <822aec9d011685e64b61@heytings.org> References: <20211004081724.6281.11798@vcs0.savannah.gnu.org> <87wnmd13ny.fsf@gnus.org> <87sfx10xs6.fsf@gnus.org> <87h7dfpjn3.fsf@gnus.org> <31b2f1e94178d73e5f05@heytings.org> <87czo3pgs1.fsf@gnus.org> <31b2f1e9412d60db82df@heytings.org> <87o87moopl.fsf@gnus.org> <19fca5d18b63e6eff5de@heytings.org> <87wnmaiida.fsf@gnus.org> <87zgr6gw9s.fsf@gnus.org> <87r1chhhkh.fsf@gnus.org> <871r4hf83m.fsf@gnus.org> <878ryhjia1.fsf@bernoul.li> <87sfwon2ip.fsf@bernoul.li> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="31265"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Lars Ingebrigtsen , Jonas Bernoulli , Stefan Kangas , emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Oct 26 01:28:02 2021 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mf9Np-0007ra-HN for ged-emacs-devel@m.gmane-mx.org; Tue, 26 Oct 2021 01:28:01 +0200 Original-Received: from localhost ([::1]:43946 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mf9Nn-000446-1J for ged-emacs-devel@m.gmane-mx.org; Mon, 25 Oct 2021 19:28:00 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41544) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mf9N7-0003Fm-Dp for emacs-devel@gnu.org; Mon, 25 Oct 2021 19:27:17 -0400 Original-Received: from heytings.org ([95.142.160.155]:39158) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mf9N4-0006wc-Ok for emacs-devel@gnu.org; Mon, 25 Oct 2021 19:27:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20210101; t=1635204432; bh=Zxcu36SnC204Njre9XgPVTyivZ9xF+DRTBBL5PpaZN0=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=Ur03XW2aEgkTO6Os90jHuoqy6AAu2jCd1E4xR4sZP5foPYD5mg9t/gvE9zkQz05Mb 7N5iJ/cTm1ib+OuOE+f/HLgubPZ7RbFxvPK1KOJMhf2wu3wNQgo1x2e37SNx7XkE7I +Nc2cF3v40e0rCzH3UoEpkj82U/DyAXMu+2ehHNbmao+hVBOPecqNIOcMME39f/KtF /jpgtT3jhB1/UqKz8Xs3t+JdIXJ6e7AaCcYmPrrEk4xIeqjrI0Yo3B0uO5RW2IoZ9o VexfAObGfKEfB+yOKA8yA/mvYUbBC5eWgdZ+OnouF4yTnmeNQmCWjEaPYImRHYwqDg ReQG8A1a/DcTQ== In-Reply-To: Received-SPF: pass client-ip=95.142.160.155; envelope-from=gregory@heytings.org; helo=heytings.org X-Spam_score_int: -1 X-Spam_score: -0.2 X-Spam_bar: / X-Spam_report: (-0.2 / 5.0 requ) DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:277805 Archived-At: >> but that breaks when `foo-next-thing' is renamed to `foo-forward'. And >> even if that never happens, it still complicates `foobar-mode-map', >> which now has a binding for `foo-next-thing', which isn't actually >> necessary because an identical binding exists in the parent keymap >> `foo-mode-map'. > > How common is this case? > > So your notion of "no binding at all" can also be described as something > like "use the binding of the parent". > This happens because t is stored in the keymap when using (define-key ... nil), as explained in store_in_keymap(): Faset (elt, idx, /* nil has a special meaning for char-tables, so we use something else to record an explicitly unbound entry. */ NILP (def) ? Qt : def); Would it not be possible to add another value that would actually be be stored as a nil at that point, for example 'nil / QQnil?