From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Markus Triska Newsgroups: gmane.emacs.bugs Subject: bug#43506: 26.1; line-height sometimes has no effect on the line height Date: Sat, 19 Sep 2020 13:43:53 +0200 Message-ID: <87363ef0ue.fsf@metalevel.at> References: <83r1qy2m0d.fsf@gnu.org> <87v9ga6pwj.fsf@metalevel.at> <83mu1m2fhb.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="23714"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) Cc: 43506@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Sep 19 13:44:20 2020 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 1kJbHv-00064k-OY for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 19 Sep 2020 13:44:19 +0200 Original-Received: from localhost ([::1]:35154 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kJbHu-0006SD-Om for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 19 Sep 2020 07:44:18 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:35674) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kJbHe-0006FX-EK for bug-gnu-emacs@gnu.org; Sat, 19 Sep 2020 07:44:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:34220) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kJbHe-0001Yr-4d for bug-gnu-emacs@gnu.org; Sat, 19 Sep 2020 07:44:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1kJbHe-00039P-2c for bug-gnu-emacs@gnu.org; Sat, 19 Sep 2020 07:44:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Markus Triska Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 19 Sep 2020 11:44:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 43506 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: notabug Original-Received: via spool by 43506-submit@debbugs.gnu.org id=B43506.160051583512085 (code B ref 43506); Sat, 19 Sep 2020 11:44:02 +0000 Original-Received: (at 43506) by debbugs.gnu.org; 19 Sep 2020 11:43:55 +0000 Original-Received: from localhost ([127.0.0.1]:45765 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kJbHX-00038r-Fe for submit@debbugs.gnu.org; Sat, 19 Sep 2020 07:43:55 -0400 Original-Received: from [78.47.144.35] (port=52856 helo=metalevel.at) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kJbHW-00038j-K1 for 43506@debbugs.gnu.org; Sat, 19 Sep 2020 07:43:54 -0400 Original-Received: by metalevel.at (Postfix, from userid 1000) id 679F59F561; Sat, 19 Sep 2020 13:43:53 +0200 (CEST) In-Reply-To: <83mu1m2fhb.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 19 Sep 2020 14:06:08 +0300") 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:188378 Archived-At: Eli Zaretskii writes: > The value t is not a valid value for the line-height property. So you > are invoking "unspecified behavior" here by using it. This is very surprising to read, because the documentation itself states: If the property value is =E2=80=98t=E2=80=99, the newline character= has no effect on the displayed height of the line=E2=80=94the visible contents alone det= ermine=20=20=20 the height. Is it indeed true that t is not a valid value for the line-height property? In one of my applications, I am using the t property to ensure that adding a newline does not increase the line height in any way, and I would prefer if this behaviour is retained also in future Emacs versions. > The limitations are documented; what happens when you use invalid > values isn't (and doesn't have to be). What is documented seems to contradict what I observe, and also what the documentation itself states in other places. All the best, Markus