From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: cursor-intangible and rear-nonsticky t Date: Mon, 05 Apr 2021 12:47:50 -0400 Message-ID: References: <11A4C2D3-101E-4121-8DFD-D6451B28C8F1@gmail.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="26283"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: emacs-devel@gnu.org To: JD Smith Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Apr 05 18:48:45 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 1lTSP6-0006go-7A for ged-emacs-devel@m.gmane-mx.org; Mon, 05 Apr 2021 18:48:44 +0200 Original-Received: from localhost ([::1]:37722 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lTSP5-0002N0-8C for ged-emacs-devel@m.gmane-mx.org; Mon, 05 Apr 2021 12:48:43 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:48698) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lTSOL-0001lt-Ib for emacs-devel@gnu.org; Mon, 05 Apr 2021 12:47:59 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:24386) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lTSOH-0006Zx-TB for emacs-devel@gnu.org; Mon, 05 Apr 2021 12:47:56 -0400 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id EF56E440960; Mon, 5 Apr 2021 12:47:52 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id AE01544095D; Mon, 5 Apr 2021 12:47:51 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1617641271; bh=0EqnxqKJ+vFtTCEYlbTKnFIeADDEWF5zhlN6IhZ6JOE=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=fOzT6Y3WU5rPGUsO64FmAfkSYsPENBBV982brVQxOGIJkklswxCNyXs1jTxXh2Tmn hfvWjnLcWVB1afp31Ral5VlgHMAKwoE9ih4cY4Z+2LJ3ZkLf9hiMDKNyXSkO7nLJKs qjC21a6vhO5cvvAQqkxZg44E6k7Wh/3vbG/jXPFZbfoGttrgFYtq8BBYqPK/v+JioL YOQRCRKtTYtiWv5qbWlaqv9uEW65aazlOMSQ75BUWT4QC53VLgJ/4go7vTBZwnPGEA Tfu5wQ/mYTL4xzTHA8uJuOqWOlYkoGSba8wCQlG4oLyRgbVlBVpp75uXbDPMwzl5Zr tP9Dtvr6Qqykg== Original-Received: from alfajor (104-222-126-84.cpe.teksavvy.com [104.222.126.84]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 1D24A1201FC; Mon, 5 Apr 2021 12:47:51 -0400 (EDT) In-Reply-To: <11A4C2D3-101E-4121-8DFD-D6451B28C8F1@gmail.com> (JD Smith's message of "Mon, 5 Apr 2021 11:26:58 -0400") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=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:267421 Archived-At: > If '(rear-nonsticky t) is among the text properties, the > `pre-redisplay-functions' do not apparently get called, and so > 'cursor-intangible fails to function. I don't think that's really what happens. I suspect the issue comes from the difference between `get-pos-property` and `get-char-property`: positions (like `point`) are not placed on a character but between two characters. But text properties only apply to characters. So the properties that are "on a position" are based on what properties would a character inherit if it where inserted at that position. By default text properties are front-nonstick and rear-sticky, so basically a position gets its properties from the char right before it. But if you set (rear-nonsticky t), then you get no properties at all at that position. So, I suspect that you're applying (rear-nonsticky t) a bit too generously, e.g. to all the chars in the prompt rather than only to the last one. > On MacOS ports, enabling `cursor-intangible-mode' causes the frame to > aggressively regrab focus and re-raise when it loses focus. This makes > it unusable. That's very weird and clearly a bug. Stefan