From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Stephen J. Turnbull" Newsgroups: gmane.emacs.devel Subject: Re: alpha support for colors Date: Wed, 31 Oct 2012 11:06:11 +0900 Message-ID: <87lienjsz0.fsf@uwakimon.sk.tsukuba.ac.jp> References: <87wqy8n2tk.fsf@gnu.org> <83objj7t21.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 X-Trace: ger.gmane.org 1351649191 24194 80.91.229.3 (31 Oct 2012 02:06:31 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 31 Oct 2012 02:06:31 +0000 (UTC) Cc: aaditya sood , emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Oct 31 03:06:40 2012 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1TTNhX-0003vm-IC for ged-emacs-devel@m.gmane.org; Wed, 31 Oct 2012 03:06:39 +0100 Original-Received: from localhost ([::1]:45265 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TTNhO-0007wt-UH for ged-emacs-devel@m.gmane.org; Tue, 30 Oct 2012 22:06:30 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:44865) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TTNhM-0007wJ-KC for emacs-devel@gnu.org; Tue, 30 Oct 2012 22:06:29 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TTNhL-0006sW-GM for emacs-devel@gnu.org; Tue, 30 Oct 2012 22:06:28 -0400 Original-Received: from mgmt2.sk.tsukuba.ac.jp ([130.158.97.224]:36853) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TTNhJ-0006qa-LN; Tue, 30 Oct 2012 22:06:25 -0400 Original-Received: from uwakimon.sk.tsukuba.ac.jp (uwakimon.sk.tsukuba.ac.jp [130.158.99.156]) by mgmt2.sk.tsukuba.ac.jp (Postfix) with ESMTP id 6EA4C9708CF; Wed, 31 Oct 2012 11:06:11 +0900 (JST) Original-Received: by uwakimon.sk.tsukuba.ac.jp (Postfix, from userid 1000) id 356C21274CB; Wed, 31 Oct 2012 11:06:11 +0900 (JST) In-Reply-To: <83objj7t21.fsf@gnu.org> X-Mailer: VM undefined under 21.5 (beta32) "habanero" b0d40183ac79 XEmacs Lucid (x86_64-unknown-linux) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 130.158.97.224 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:154595 Archived-At: Eli Zaretskii writes: > What do you mean by "composition of all the faces"? Why "all"? I suspect aaditya is thinking in terms of bitmap composition operations on graphics layers, not Emacs faces. So he'd like to put an overlay on some text, give that overlay a 'face property of '(+ red), and turn all the blue text in the overlay to violet (the RGB sum of #F00 and #00F == #F0F).