From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: =?utf-8?Q?=C3=93scar_Fuentes?= Newsgroups: gmane.emacs.help Subject: Re: Highlight tabulated and trailing whitespace Date: Mon, 28 Dec 2020 13:42:44 +0100 Message-ID: <87sg7qcda3.fsf@telefonica.net> References: <87ft3qilf6.fsf@zoho.eu> <87tus6gywp.fsf@zoho.eu> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="33403"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:DQPoMrD6iMp7XJRVo76gd29feE8= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Dec 28 13:44:19 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 1ktrsp-0008aO-FY for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 28 Dec 2020 13:44:19 +0100 Original-Received: from localhost ([::1]:39344 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ktrsl-0006PN-8m for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 28 Dec 2020 07:44:18 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:46486) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ktrrS-0006PG-CR for help-gnu-emacs@gnu.org; Mon, 28 Dec 2020 07:42:54 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]:44562) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ktrrQ-0002Og-NJ for help-gnu-emacs@gnu.org; Mon, 28 Dec 2020 07:42:54 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1ktrrO-0006zj-I3 for help-gnu-emacs@gnu.org; Mon, 28 Dec 2020 13:42:50 +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: 2.1.23 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:126850 Archived-At: steve-humphreys@gmx.com writes: > Have tried the following two lines to no effect > > (require 'whitespace) > (whitespace-mode) In a buffer, just: M-x whitespace-mode For enabling it automatically when you open certain type of files, use a major mode hook. For instance: (add-hook 'prog-mode-hook #'whitespace-mode) Will activate whitespace-mode in all programming language modes.