From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Ken Goldman Newsgroups: gmane.emacs.help Subject: Re: Refresh display after changing variable Date: Mon, 2 Aug 2021 15:36:01 -0400 Message-ID: References: <83k0l3n5hf.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="16903"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Aug 02 21:36:43 2021 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 1mAdju-0004Ch-9L for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 02 Aug 2021 21:36:42 +0200 Original-Received: from localhost ([::1]:43310 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mAdjt-0006FX-0I for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 02 Aug 2021 15:36:41 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38636) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mAdjR-0006FM-6e for help-gnu-emacs@gnu.org; Mon, 02 Aug 2021 15:36:13 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:59218) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mAdjO-0005vg-C0 for help-gnu-emacs@gnu.org; Mon, 02 Aug 2021 15:36:12 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1mAdjK-0003ME-5t for help-gnu-emacs@gnu.org; Mon, 02 Aug 2021 21:36:06 +0200 X-Injected-Via-Gmane: http://gmane.org/ In-Reply-To: <83k0l3n5hf.fsf@gnu.org> Content-Language: en-US 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: 7 X-Spam_score: 0.7 X-Spam_bar: / X-Spam_report: (0.7 / 5.0 requ) BAYES_00=-1.9, FORGED_MUA_MOZILLA=2.309, HEADER_FROM_DIFFERENT_DOMAINS=0.25, NICE_REPLY_A=-0.001, 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:132318 Archived-At: On 8/2/2021 1:03 PM, Eli Zaretskii wrote: >> From: Ken Goldman >> Date: Mon, 2 Aug 2021 12:49:41 -0400 >> >> I have this to toggle a variable: >> >> (defun kg-toggle-whitespace-line-column () >> "Toggle whitespace line column between 80 and 101" >> (interactive) >> (setq whitespace-line-column (if (= whitespace-line-column 80) 101 80)) >> (font-lock-fontify-buffer)) >> (global-set-key "\C-cw" 'kg-toggle-whitespace-line-column) >> >> However, the buffer is not refreshed with the different colors. >> >> I also tried (refresh-display) - no success >> >> (revert-buffer) works but seems crude. >> >> What's the correct function? > > This: > > (defun kg-toggle-whitespace-line-column () > "Toggle whitespace line column between 80 and 101" > (interactive) > (setq whitespace-line-column (if (= whitespace-line-column 80) 101 80)) > (whitespace-mode 1)) > > That didn't work. It seems that, once it's on, turning it on again doesn't help. I tried adding a nil first, but it doesn't help. It doesn't force redoing the fonts. This is emacs 26.3 on ubuntu, of that matters.