From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Introducing face in comments for various modes Date: Sun, 11 Dec 2022 12:40:21 -0500 Message-ID: References: <9ZK1Solghrmps4AarUsz2E6-mAdkrTZoXPs4RTRTd9sZ0Cd8DGhK955im1kuug-EZXU3tc5rgDDd16vQexxpFnMvMFjFqnNnh0noashyLdE=@protonmail.com> Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="23722"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:XBsl+QJfV7LNTQT4FIk9YZAI83g= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sun Dec 11 18:40:49 2022 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 1p4QJk-00063Q-Sp for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 11 Dec 2022 18:40:48 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1p4QJV-0005XO-3R; Sun, 11 Dec 2022 12:40:33 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p4QJT-0005WG-QF for help-gnu-emacs@gnu.org; Sun, 11 Dec 2022 12:40:31 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p4QJS-0005QR-8p for help-gnu-emacs@gnu.org; Sun, 11 Dec 2022 12:40:31 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1p4QJO-0005c5-9p for help-gnu-emacs@gnu.org; Sun, 11 Dec 2022 18:40:26 +0100 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 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-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:141645 Archived-At: BTW, there is a related convention in ELisp code where comments that start in column 0 and which are introduced with 3 or more semi-colons are considered sectioning headers (where ";;;" means a top-level header, ";;;;" a subheader, ";;;;;" a subsubheader, ...). I'd be happy if Emacs were changed to highlighting those. Stefan Heime [2022-12-11 15:35:41] wrote: > The following uses `hi-lock` to change the foreground of comments matching > a regexp. This is implemented for emacs-lisp files where comments start > with ";;". > > I would like to extend this for other programming languages besides emacs-lisp > files, using the relevant comment character automatically for that language. > > (defface elfa-face > '((t :foreground "magenta")) > "Face for comment headings.") > > (defun elfa-regexp (&optional actm) > "Identify comment category ';; [Category]'." > (highlight-regexp > "^;;\s+\\[.+\\].*$" 'elfa-face)) > > (defun elfa-category () > "TODO." > (interactive) > (add-to-list 'auto-mode-alist '("\\.el\\'" . hi-lock-mode)) > (add-hook 'emacs-lisp-mode-hook 'hi-lock-mode t) > (add-hook 'hi-lock-mode-hook 'elfa-regexp))