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: An unexpected delay when making text invisible Date: Mon, 01 Feb 2021 05:39:38 +0100 Message-ID: <87zh0ommet.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="8759"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: mu4e 1.1.0; emacs 28.0.50 To: Help Gnu Emacs mailing list Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Feb 01 05:40:56 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 1l6R1E-00028V-DX for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 01 Feb 2021 05:40:56 +0100 Original-Received: from localhost ([::1]:49700 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l6R1D-0007HK-Fg for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 31 Jan 2021 23:40:55 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:36322) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6R0M-0007HB-9X for help-gnu-emacs@gnu.org; Sun, 31 Jan 2021 23:40:02 -0500 Original-Received: from mail.mojserwer.eu ([195.110.48.8]:48364) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l6R0E-0001oV-RK for help-gnu-emacs@gnu.org; Sun, 31 Jan 2021 23:40:02 -0500 Original-Received: from localhost (localhost [127.0.0.1]) by mail.mojserwer.eu (Postfix) with ESMTP id A889CE70FA for ; Mon, 1 Feb 2021 05:39:49 +0100 (CET) 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 xn3mEAHZLAFB for ; Mon, 1 Feb 2021 05:39:44 +0100 (CET) Original-Received: from localhost (178235147194.dynamic-3-poz-k-0-1-0.vectranet.pl [178.235.147.194]) by mail.mojserwer.eu (Postfix) with ESMTPSA id 378D9E63AA for ; Mon, 1 Feb 2021 05:39:43 +0100 (CET) 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=-0.01, RCVD_IN_MSPIKE_WL=-0.01, 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:127508 Archived-At: Hi all, I'm not sure if this shouldn't go to bug-gnu-emacs, but I'll ask here first, because it may happen that it's me who's doing something wrong. I've been experimenting with the `invisible' text property, and I noticed that after running `add-to-invisibility-spec' the text I want to make invisible can still be seen - at least until I e.g. change buffers. I thought that I needed to add `(redisplay)', but that didn't help, either. Here is a piece of code which exhibits the issue. --8<---------------cut here---------------start------------->8--- (defun invisibility-test-setup () "Set up the buffer for invisibility testing." (interactive) (switch-to-buffer "*Invisibility test*") (erase-buffer) (insert "This line is always visible.\nAnd this one not.") (local-set-key (kbd "t") #'invisibility-test-toggle) (goto-char (point-min)) (end-of-line) (put-text-property (point) (point-max) 'invisible 'invisible-test-property)) (defvar invisibility-test-state t) (defun invisibility-test-toggle () "Toggle the state of the second line." (interactive) (if invisibility-test-state (remove-from-invisibility-spec 'invisible-test-property) (add-to-invisibility-spec 'invisible-test-property)) (setq invisibility-test-state (not invisibility-test-state))) --8<---------------cut here---------------end--------------->8--- I checked this in emacs -Q, too. Say M-x invisibility-test-setup and then: - if you say M-x invisibility-test-toggle, everything is fine - but then, the buffer is changed from the minibuffer to some other one. - if you press `t', nothing happens until you e.g. switch buffers (just pressing M-x to change to the minibuffer is also enough). Am I doing something wrong? I expected that pressing `t' would switch between visible and invisible instantly. Why does it not? TIA, -- Marcin Borkowski http://mbork.pl