From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu Newsgroups: gmane.emacs.devel Subject: Re: Change of behavior of "space" display property and face property Date: Tue, 04 Oct 2022 14:34:28 +0800 Message-ID: <87lepwyu4r.fsf@yahoo.com> References: <299CBEC6-C2E3-4CF3-BEAC-37C739D37C6E@stanford.edu> 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="12312"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.91 (gnu/linux) Cc: "emacs-devel@gnu.org" To: Qiantan Hong Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Oct 04 08:38:18 2022 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 1ofbZK-000305-Ds for ged-emacs-devel@m.gmane-mx.org; Tue, 04 Oct 2022 08:38:18 +0200 Original-Received: from localhost ([::1]:48072 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ofbZI-0002mC-Rv for ged-emacs-devel@m.gmane-mx.org; Tue, 04 Oct 2022 02:38:16 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:37066) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ofbVt-0001lt-8u for emacs-devel@gnu.org; Tue, 04 Oct 2022 02:34:47 -0400 Original-Received: from sonic312-25.consmr.mail.ne1.yahoo.com ([66.163.191.206]:34716) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ofbVr-0006Q9-Gp for emacs-devel@gnu.org; Tue, 04 Oct 2022 02:34:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1664865280; bh=nsGznwHf+mFh0PkkiUKibD9LJ+t7n8K5ocjmnm/0mIs=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From:Subject:Reply-To; b=Oha0PSGiQIF3YgJ+omAYlw1AjFQ3p07YmBD/5Jnkn2zQs7i62Z3IbCkG0DTyGz5EWhZk10plEl+u4g420NjI1YRs43Vi5NX07uvHVwEdn54W61EX0AX/ETS+7H+Yopim9XcJWkWYtKVQwL4m13MtdRMpdKqCOuIsZYhNxxFMubB6a52ozUihgVioo8dfHOrvU1GUGgMVApz30gGyD2VkYZc5i02jiPhvSFLKLP17Dn5juvDnlhJ5dvTziyMiqqdMpkqRxhlZJE3JRN9rVNVs9Ae/dkG2WUylfmeDr2itNNMRD/gL7f83aDN88/oWZwLT6/hirKVb4tSEh773idhkmg== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1664865280; bh=xQcYj7Fn6KWSxc8SBzvijRVk8Z/l5cMzcw3Vjaq2gqc=; h=X-Sonic-MF:From:To:Subject:Date:From:Subject; b=owYdnyBxlBa2z4G8WUgSBNndFZt34SVq8DlXEZKHrNpW0AdrJ90AXqlBP+Pg6eDFvy3sLwgBQZlmVa/7ZuGxmUy0DrSXTEfFMzk8aBvQVfaJZ/g8Ebby5/Fk+Z63pdSAB1HbkGdQvidOsM0bPEJnM2AwRtjZ1+9TwGjU5xYrxgmPAYbGIkHlnbrlaeVlp4gcwEwk3rmhWXVNTEA2a2h0MPrJaFYMTXk4FHEc9rpGqYtBu5k6WIqGfWTmVqYfsjZIB5JzLTofuKc0NeHgtPzoGb2A5qDey5S4fZ8pVxHn5Qqr2tjQpepktT6wyGT5eX1qnDDw2BQcN/a0LxxG4L9Nvg== X-YMail-OSG: hFFzEBwVM1lNaUe1lS2tBHnXy_ZsgC4kp6NdyeFrK_s1Oq0IGR_kVSiebLCiySo ePF_Dk7yIN8_FZrfoh7FIxQRBXYP5kSItzmaAlUaYeerFjfJG5uz_rWKHRDFNCMvV5bI9NzalWBI q2Z._tl65DG6uaXG_GEvg6SKCjA4p6rkUVbyCBYS6uDhDpdQtuLhUVQ3swKeaLuhK28Ge3D9qtKK xlEcxiuxIEbvLO.X7z1pOM9wbeR4COuOV_7iVWn9K0v7CAtg2CAKBvgAErktUvMGmhth4H1xQCVX 6FDjXtxKKPNYeZHVY0FAKdPYDhe2.TRuMoEIe22MmTr6uDKRFQiwF.y5ZWC.4NTVx.BuckQk3Zr4 ys_l0pJFJ7FUNsBT5cml_0ylvkF7xpKD2UYlOa5a2ncLNyrZbemDHLNmoBmUpH5wf2tCf8UUHAp7 4QSYgSpqb7zs6Rqoz5Q1RvSXJyPysWnZxKWapHG1v9b1o6O8NyXHdDrPb1MFPbZUBL9uHGfnokjz NkMse1K7c41Nd4VXYjJN0lwPmOnCi4FHazuNG.EcH5jvwB_AtDY_CZa9XdUoGnXNJhWawJdaz.m_ LERTEBclh3ciH1Ew2LUOTlFgiq_QTtSSGFZN2fiCZoIT5e4dD4z_SFcLCrmgRysNcNncw4q0P0DL WDMb6eiF9QcU7CN1UMTpvGCUQiafHIgFrmTOhXWJ6FSyWef7T_BkCdBgZ.6QCXRbHdONX0Z_2MNe rTroXEPYlZay2dVJ6se4OXukVnxootZq38d5EHeNH06ZgjM37Z_iakmgw_G8CSkqPRWCZcJZHGcI 8zHVpGmz4Q.bnGLcOAWKitWCr0NhmHw8ndUUYDVX.E X-Sonic-MF: Original-Received: from sonic.gate.mail.ne1.yahoo.com by sonic312.consmr.mail.ne1.yahoo.com with HTTP; Tue, 4 Oct 2022 06:34:40 +0000 Original-Received: by hermes--production-sg3-cf9dc7f8d-lcfnp (Yahoo Inc. Hermes SMTP Server) with ESMTPA ID 59dba5bc3594b0a6ba47563022264a0b; Tue, 04 Oct 2022 06:34:34 +0000 (UTC) In-Reply-To: <299CBEC6-C2E3-4CF3-BEAC-37C739D37C6E@stanford.edu> (Qiantan Hong's message of "Tue, 4 Oct 2022 04:48:25 +0000") X-Mailer: WebService/1.1.20702 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Received-SPF: pass client-ip=66.163.191.206; envelope-from=luangruo@yahoo.com; helo=sonic312-25.consmr.mail.ne1.yahoo.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 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:296840 Archived-At: Qiantan Hong writes: > Open an empty text file, M-: (insert #(" " 0 1 (face (:underline t) displ= ay (space :align-to right)))) > > On Emacs 28, this produce a blank line with underline. > > On Emacs 29, this produce a blank line without underline. In general, =E2= =80=9Cspace=E2=80=9D display=20 > seem to disregard any face property. > > Is this intended or is this a bug? =E2=80=9Cspace=E2=80=9D display respec= ting face property is useful for > typesetting. For example. I use it to display a horizontal separator unde= r my header line. > > Best, > Qiantan That is almost certainly a bug, but I cannot be certain without knowing what toolkit and window system you built Emacs with. I remember fixing something similar on the NS build months back.