From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Marcin Borkowski Newsgroups: gmane.emacs.help Subject: Re: How to remove a property from an overlay? Date: Sat, 31 Jul 2021 10:45:31 +0200 Message-ID: <87a6m2dg7o.fsf@mbork.pl> References: <87pmuzd56g.fsf@mbork.pl> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9254"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: mu4e 1.1.0; emacs 28.0.50 Cc: help-gnu-emacs@gnu.org To: Stefan Monnier Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sat Jul 31 10:46:18 2021 Return-path: Envelope-to: geh-help-gnu-emacs@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 1m9kdN-00028J-Ui for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 31 Jul 2021 10:46:17 +0200 Original-Received: from localhost ([::1]:59168 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m9kdL-0003zE-Kb for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 31 Jul 2021 04:46:15 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:33344) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m9kcl-0003xB-Kb for help-gnu-emacs@gnu.org; Sat, 31 Jul 2021 04:45:39 -0400 Original-Received: from mail.mojserwer.eu ([195.110.48.8]:40388) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m9kcj-0007oa-Ld for help-gnu-emacs@gnu.org; Sat, 31 Jul 2021 04:45:39 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by mail.mojserwer.eu (Postfix) with ESMTP id 9A6A2E6B6A; Sat, 31 Jul 2021 10:45:35 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at mail.mojserwer.eu Original-Received: from mail.mojserwer.eu ([127.0.0.1]) by localhost (mail.mojserwer.eu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2DFBLygRoNVM; Sat, 31 Jul 2021 10:45:32 +0200 (CEST) Original-Received: from localhost (178235147005.dynamic-3-poz-k-0-1-0.vectranet.pl [178.235.147.5]) by mail.mojserwer.eu (Postfix) with ESMTPSA id 48D71E61C2; Sat, 31 Jul 2021 10:45:32 +0200 (CEST) In-reply-to: Received-SPF: pass client-ip=195.110.48.8; envelope-from=mbork@mbork.pl; helo=mail.mojserwer.eu X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 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-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:132212 Archived-At: On 2021-07-30, at 22:02, Stefan Monnier via Users list for the GNU Emacs text editor wrote: > Marcin Borkowski [2021-07-30 20:31:35] wrote: >> is there any way I can remove property `prop' from overlay `ovl' besides >> (overlay-put ovl 'prop nil) >> which does not really remove it, only sets it to nil? > > The recommendation is to try and make sure you always give semantics to > those properties such that nil behaves the same as the absence of > the property. Could that be put in the manual? -- Marcin Borkowski http://mbork.pl