From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#14582: 24.3.50.1; Strange overlay behavior, when window-start is inside an overlay. Date: Thu, 10 Feb 2022 08:15:59 +0200 Message-ID: <83a6ezuu00.fsf@gnu.org> References: <83k0eg7y23.fsf@gnu.org> <87sft37nmo.fsf@web.de> <83a6fb90zy.fsf@gnu.org> <87h79j2srb.fsf@web.de> <83pmo678o1.fsf@gnu.org> <87iltynkbg.fsf@web.de> <83h79i6iw6.fsf@gnu.org> <878rut6hlq.fsf@web.de> <83czk578m0.fsf@gnu.org> <837dab4zmm.fsf@gnu.org> <875ypvcsyf.fsf@web.de> <83k0ea3fci.fsf@gnu.org> <87r18gn1rh.fsf@web.de> <83k0e8z3uo.fsf@gnu.org> <87k0e6xkta.fsf@web.de> <83v8xqvxox.fsf@gnu.org> <87r18ej957.fsf@web.de> <83r18dwnqn.fsf@gnu.org> <875ypor90e.fsf@web.de> <83wni4up6g.fsf@gnu.org> <87pmnvr0l4.fsf@web.de> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9744"; mail-complaints-to="usenet@ciao.gmane.io" Cc: larsi@gnus.org, esabof@gmail.com, 14582@debbugs.gnu.org To: Michael Heerdegen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Feb 10 07:17:45 2022 Return-path: Envelope-to: geb-bug-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 1nI2m1-0002Q1-53 for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 10 Feb 2022 07:17:45 +0100 Original-Received: from localhost ([::1]:49646 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nI2m0-0003BR-3U for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 10 Feb 2022 01:17:44 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:49092) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nI2lK-0003Ae-Ur for bug-gnu-emacs@gnu.org; Thu, 10 Feb 2022 01:17:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:59502) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nI2lK-0001LQ-Fz for bug-gnu-emacs@gnu.org; Thu, 10 Feb 2022 01:17:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1nI2lK-0003Is-BD for bug-gnu-emacs@gnu.org; Thu, 10 Feb 2022 01:17:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 10 Feb 2022 06:17:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 14582 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 14582-submit@debbugs.gnu.org id=B14582.164447377312616 (code B ref 14582); Thu, 10 Feb 2022 06:17:02 +0000 Original-Received: (at 14582) by debbugs.gnu.org; 10 Feb 2022 06:16:13 +0000 Original-Received: from localhost ([127.0.0.1]:53399 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nI2kW-0003HO-RJ for submit@debbugs.gnu.org; Thu, 10 Feb 2022 01:16:13 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:42174) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nI2kV-0003H1-Ee for 14582@debbugs.gnu.org; Thu, 10 Feb 2022 01:16:11 -0500 Original-Received: from [2001:470:142:3::e] (port=49916 helo=fencepost.gnu.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nI2kQ-00018u-55; Thu, 10 Feb 2022 01:16:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=ZIkY39+cHd5aVkYCwXLv0XeRdV7Na61DomX3p9gyaDU=; b=OcSj14Otszxo br5ScQAICNuosOpaqZWPqzQ82ZE05URlD/hBVDBfmZkbKrG2SKNhJZj+ZCS7l26NX1PxHYHyfpzPw IActU+o4y/nX0DAusMQav3n9AF6mIyU5BmsGhXU4bD4S9I1nGnYcgI3jgBAh2eJhGxcqtYIWcEO8f s1nefDPXizh8BsJmatBxoziE0x+YD1pmuovF/DiKf5jlQyf44VPVx9EnmlKHy3/6GxiZnW5W9s6uc Qgr/8rzUvylOEFAM5YQEYvVHMSnCMpAL6v9UKNsOgYh2VPdkpkK9qSWJJX4sUiJLTCh5NwS3ms9vB yKscAAq90a3wvCO+jJIb4g==; Original-Received: from [87.69.77.57] (port=2952 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nI2kP-0007d8-HW; Thu, 10 Feb 2022 01:16:05 -0500 In-Reply-To: <87pmnvr0l4.fsf@web.de> (message from Michael Heerdegen on Thu, 10 Feb 2022 02:07:19 +0100) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:226526 Archived-At: > From: Michael Heerdegen > Cc: larsi@gnus.org, esabof@gmail.com, 14582@debbugs.gnu.org > Date: Thu, 10 Feb 2022 02:07:19 +0100 > > Eli Zaretskii writes: > > > Info buffers have a 'display' property whose value is a string at the > > beginning of each node, and that 'display' property makes the window's > > start point invisible. So whenever Emacs can make the window-start > > visible, it does. > > But Emacs scrolls the first lines out of view: at the upper edge, less > text is visible after the adjustment. How does this make anything > visible that had not been visible before? That's not what make-window-start-visible means. It means "if the current window-start is invisible, try to find an alternative window-start that would be visible, while still showing point". Your interpretation of the setting is simply impossible to implement: the display engine cannot possibly do anything to uncover the hidden window-start point without scrolling the window in some way. So _something_ that was visible before must become invisible after, because we scroll the window.