From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: [External] : Re: Could the current font-lock mechanism support font locking code in comments? Date: Tue, 30 Mar 2021 21:12:46 -0400 Message-ID: References: <-vuXfnLB83FOYoLI0Kery7gGaun-l6OFzywSWZ6LMyJTpDGk9ooLIKfJ4xSCkYwNTK9IHgDhtkdxPw7kXZkyaippVgp7CRR3aMz7dbos3og=@protonmail.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="34283"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: scame , "emacs-devel@gnu.org" To: Drew Adams Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Mar 31 03:14:00 2021 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 1lRPQk-0008n1-Fl for ged-emacs-devel@m.gmane-mx.org; Wed, 31 Mar 2021 03:13:58 +0200 Original-Received: from localhost ([::1]:34574 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lRPQj-0007Iy-El for ged-emacs-devel@m.gmane-mx.org; Tue, 30 Mar 2021 21:13:57 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41982) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRPPg-0006rE-Ig for emacs-devel@gnu.org; Tue, 30 Mar 2021 21:12:52 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:14676) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRPPe-0008UI-1D for emacs-devel@gnu.org; Tue, 30 Mar 2021 21:12:51 -0400 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 2AF9C10022E; Tue, 30 Mar 2021 21:12:49 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 8DF3F10021D; Tue, 30 Mar 2021 21:12:47 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1617153167; bh=CD9uV85TdO13Wz9dab3U6icUry52qXgexd102ofB+nY=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=J6SSyLMoNmhCEvfYO2l1URpHIJU6337m/NQDEIQ3qnSymILvYKixNI9PzHGQUbik9 zY5+4UidR1sty/wt8Ew2duAZbZltrcMeOD6tql41i0GbDFPcsrO0BYXX1GgFU03qzd G3opZbxZ63yhJHIzsdJ5Mq9ByxQdsS6ObwjoRHyk+vnC5+25LkylTXlfY3Fgxxytr+ rmld+wROoCjjbYXV148tZgjVVJx7McwBEMQs3gpbiBzYMkmbT89TpVpuW4NPuwDJTq O09a4YyZBPS0XLCjtynVKQOgKGQCpbjQ4JbTp1vz1e9phQFX3zmNtyGYr8zTS8o7Mh J78e1bw0gQ7Gw== Original-Received: from alfajor (104-222-126-84.cpe.teksavvy.com [104.222.126.84]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 55329120297; Tue, 30 Mar 2021 21:12:47 -0400 (EDT) In-Reply-To: (Drew Adams's message of "Tue, 30 Mar 2021 18:09:02 +0000") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, 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: 2.1.23 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:267200 Archived-At: > Vanilla Emacs might not have dimming, but Emacs has it. > Library `doremi-frm.el' provides commands that let > you incrementally dim or strengthen a face or frame > foreground or background. What I meant is that there is no way to define a face that dims other faces. What you point to is what I was referring to as the hard way: you have to come up with a list of faces used by the font-lock rules then pass it to a function (like the ones in `doremi-frm`) which returns a new face (since you can't modify the actual font-lock faces which are still being needed in their non-dimmed form) and then arrange to run the existing rules in such a way that they actually use your newly defined faces. It's cumbersome and tricky to do it in a reliable way. Instead, what we'd need is a face whose effect is to modify the underlying face (e.g. by dimming it). I guess alpha-blending could be used for that. Stefan