From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: martin rudalics Newsgroups: gmane.emacs.devel Subject: Re: Question about display engine Date: Thu, 29 Aug 2019 09:45:19 +0200 Message-ID: <82ddb2cb-89d3-4e64-d4ce-35db4baf9fb9@gmx.at> References: <20190825102205.rxhmu3bukraywhok@Ergus> <83lfvhh6dn.fsf@gnu.org> <20190826043145.pm5aplrxna5hwcso@Ergus> <83y2zgfjzs.fsf@gnu.org> <20190826081819.cuhm3tpw3lq3m5jh@Ergus> <83mufwfe8o.fsf@gnu.org> <20190827222025.p2cbjwak4ysi3ept@Ergus> <3ea328a6-2b35-5a01-77a1-bbf9ff7f16f2@gmx.at> <83lfvdd5f7.fsf@gnu.org> <20190828163142.kds3mfnyrjvxxxcj@Ergus> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="202000"; mail-complaints-to="usenet@blaine.gmane.org" Cc: Eli Zaretskii , emacs-devel@gnu.org To: Ergus Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Aug 29 09:46:30 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1i3F8W-000qLo-3U for ged-emacs-devel@m.gmane.org; Thu, 29 Aug 2019 09:46:28 +0200 Original-Received: from localhost ([::1]:46574 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i3F8S-0003ty-Ul for ged-emacs-devel@m.gmane.org; Thu, 29 Aug 2019 03:46:26 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:49108) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i3F7a-0003rM-Fu for emacs-devel@gnu.org; Thu, 29 Aug 2019 03:45:32 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i3F7Y-0001Kz-Tq for emacs-devel@gnu.org; Thu, 29 Aug 2019 03:45:30 -0400 Original-Received: from mout.gmx.net ([212.227.17.22]:53941) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1i3F7Y-0001Ja-92; Thu, 29 Aug 2019 03:45:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1567064721; bh=SzR5THDKZVyLab6GMb+LdTjD3ux+p7bUUzL89hnbyks=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=U4miJdq0mdQD4yXoU7VLUMDIto106PDesVlFGr5bUOhNnqaz5T4z/NJr6X1JjxZyk s02v/nTqmwHaqhmswA2VZ8iDMoIsoQTJklJMwF6C+4MlUS5OmF+MRinhVDTzru+Y0N tahoMbB6a+hY5SXvDJnEHrzNwm/L0uhl9oT6nZIY= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Original-Received: from [192.168.1.101] ([46.125.249.63]) by mail.gmx.com (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1M6DWi-1i9rtA3nQW-006eq5; Thu, 29 Aug 2019 09:45:21 +0200 In-Reply-To: <20190828163142.kds3mfnyrjvxxxcj@Ergus> Content-Language: de-DE X-Provags-ID: V03:K1:MOax75Pl+cQWA+ygN7u19VzaA8ZUwiCpTL+heC10ynLq2Zg58RL w15qCE7zM6RS88E5+66Dqp8gcqlD9LGbg6Q8RZhiCwduzgALuenoIcSGiGuoeJ+6nNOMPip L/qDsXp1lm7wqcvSUACe8tMnovQLy18urAjlNMvrliLeWQxIfmkels6blETYZ4RHu25Nj89 sHbooNLueO6CfAsCRhFVA== X-UI-Out-Filterresults: notjunk:1;V03:K0:s04h5iUErmg=:09GSLItZeiygYFuunLNOW8 hcETr8lpuAoH6WUfbOKehYHYeRdE1Xbj360kq/dRuEpQxoy8N1f3L3UahXHNyYAPAg3n7qz7k yjliitAhoNtLiOmtiLUOlAOdcHCC9yauBMIeMh2rb4OPC5qovmXnbi7ch6zRzWB7i+qiGBO2C YflsEqIdzFrx6bX30qYsRrz0dLnZUFBi6oFWG9ZlvqLkyfdR81OT0pufcL2TPQZA/UzXCYtDE KPDcjupzEZGv+UzwRWKRZhy5nD0yLbS+zUzD56zPlKdB7UA7RMQ4HQuW16n0sJL8PoFjMgb/O nl5x9lMFCy8w6iiF1LCTobXistD9AjWN8OInJ8ehYlzKp2axXe4CCToEetfZlmGRFSsoKWKRQ nZNJIBSiihZwdvzEgj7jFIJbKrQ8ylYxlJ5f6Fp2hepwD6DcBAmiD3CoHQRPKmEgEO0GMP7Xf Y6CEKdIbOrcxBhgoFQxSt4sqylWrK7F+Ri3iCQK53QUlAJQgcRND51DBoC3CtTE9xCKtd5i3o MLAuadKvITjmik9U1MK1IFOZgPIJMe5MjRZ+MBYkxMDBJl0ClYQ7/pBBmUlXgEDALzbSMJHSG V/UrBizHJXjDCHKMPjgYeMqZ3ROssA4MKmLDdOttmIyZ8PZEL63ouH0WuQnxVdR154nK5NxnD xsLDuTAZygMq1t0pAtRegSzICH1Q24BHUfyFfJN5ijdlDMWw/LeMFUNN9fbL13PJTZpBMOCig j9+HY8SOniCKN0Ki1BMxoJE5k8Xz89y6vmRalofjnjt61yZMVqNuvHD4PnTdUnlryUnOywf+ X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 212.227.17.22 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.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:239665 Archived-At: > Any way my question comes from 2 frequent use cases I don't know what's > the expected behavior: > > 1) Base face sets background and extend; and face sets only background. > > 2) Base face sets extend but not background; and face sets both. > > in what condition the :extend attribute goes to the merged face? Always? > when in base_face? When in face? Assuming that "base face" is merged in before "face", both should conceptually expand face. The problematic case is Base face sets background and extend to t; and face sets background to t and extend to nil. In this case merge should provide to show normal text with face but extend the background of the basic face. martin