From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Faces? Date: Wed, 01 Jul 2020 19:23:21 +0200 Message-ID: <87wo3nrvxy.fsf@ebih.ebihd> References: <3fc1ce72-8764-336b-7890-fb9f2a279a5a@gmail.com> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="4864"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:2tw6eYBtQ0A5Wa69oiGKQw4xYoY= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Jul 01 19:24:03 2020 Return-path: Envelope-to: geh-help-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 1jqgSp-00019r-1t for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 01 Jul 2020 19:24:03 +0200 Original-Received: from localhost ([::1]:40474 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jqgSo-0006Xp-3S for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 01 Jul 2020 13:24:02 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58050) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jqgSL-0006Wx-NV for help-gnu-emacs@gnu.org; Wed, 01 Jul 2020 13:23:35 -0400 Original-Received: from static.214.254.202.116.clients.your-server.de ([116.202.254.214]:58986 helo=ciao.gmane.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jqgSJ-0001mE-0e for help-gnu-emacs@gnu.org; Wed, 01 Jul 2020 13:23:32 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1jqgSE-0000S3-RI for help-gnu-emacs@gnu.org; Wed, 01 Jul 2020 19:23:26 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/01 13:23:26 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -8 X-Spam_score: -0.9 X-Spam_bar: / X-Spam_report: (-0.9 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:123457 Archived-At: Douglas Lewan wrote: > Is there a "Hello, World!" kind of tutorial about > setting (and unsetting) faces? > > The only thing I find in the emacs info suggests > putting face attributes character by character. > I can do that, but there has to be something more > appropriately abstract. Here are some face stuff: ;;; -*- lexical-binding: t -*- ;;; ;;; this file: ;;; http://user.it.uu.se/~embe8573/emacs-init/test-faces.el ;;; https://dataswamp.org/~incal/emacs-init/test-faces.el (defun insert-colored-text (str color bright) "Insert STR at point, in COLOR, and sometimes BRIGHT." (interactive (list (read-string "string: ") (read-string "color: ") (y-or-n-p "bright? ") )) (insert (propertize str 'font-lock-face `(:weight ,(if bright 'bold 'normal) :foreground ,color) ))) ;; use this to test (when nil (progn (forward-line 1) (insert "The French flag is ") (insert-colored-text "blue, " "blue" t) (insert-colored-text "white, " "white" t) (insert "and" ) (insert-colored-text " red." "red" nil) ) ; <- eval me ) (defun test-all-faces () "Print a test string in every color, normal and bright." (interactive) (forward-line 1) (let ((str "this is what it looks like")) (dolist (bold '(nil t)) (dolist (color '("black" "red" "green" "yellow" "blue" "magenta" "cyan" "white") ) (insert-colored-text (format "%s in %s (that is %sbold)\n" str color (if bold "" "not ")) color bold) )))) ;; test all colors: ;; (test-all-faces) ; <- eval me And even more in this long file [1], in particular the `font-lock-add-keywords' stuff (line 27) and "what-face" (line 49). I wonder tho... why is this, uhm, required? (require 'erc-button) (require 'erc-match) The byte compiler doesn't issue any complaint if I comment it out. But without it, Emacs reports an invalid face error on boot (when the file is loaded). What I can see ERC doesn't get any special treatment in that file, either. [1] https://dataswamp.org/~incal/emacs-init/my-faces.el -- underground experts united http://user.it.uu.se/~embe8573 https://dataswamp.org/~incal