From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.help Subject: Re: Is there a way of setting a variable only when it exists? Date: Wed, 16 Mar 2022 01:25:33 +0100 Message-ID: <87a6dq3fr6.fsf@web.de> References: <87lexdul8e.fsf@mbork.pl> <87lexcnq3w.fsf@web.de> <87bky7viz2.fsf@mbork.pl> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="20985"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: help-gnu-emacs@gnu.org To: Marcin Borkowski Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Mar 16 01:27:05 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 1nUHVI-0005AE-SS for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 16 Mar 2022 01:27:04 +0100 Original-Received: from localhost ([::1]:58974 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nUHVH-00031e-GT for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 15 Mar 2022 20:27:03 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:34576) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nUHU2-000314-0A for help-gnu-emacs@gnu.org; Tue, 15 Mar 2022 20:25:46 -0400 Original-Received: from mout.web.de ([212.227.15.3]:56763) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nUHTz-0007mP-Uc for help-gnu-emacs@gnu.org; Tue, 15 Mar 2022 20:25:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1647390334; bh=iE6WrZSUPYeS1d+yRP2+yQJi3Fih6ojQFQOWwcLdmEI=; h=X-UI-Sender-Class:From:To:Cc:Subject:References:Date:In-Reply-To; b=jGmnJf9U5LedMtvrfCJ0+AbBI3hu2/kMLhj/0jFVXj+SL7M68sDEOiYx6Nl693AIa 3e9wRjKJppaZHa3/OBf9fG/ByOAfD2RFSqA8r9V5PDqBLCb9nBhEskIO2JD/okUxrP N8QOeqMBqceVMR9HG01Qd2rfpxiBJgOWuW/K1Ozc= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Original-Received: from drachen.dragon ([84.60.174.212]) by smtp.web.de (mrweb006 [213.165.67.108]) with ESMTPSA (Nemesis) id 1M76XT-1nTSWf100d-008Vm1; Wed, 16 Mar 2022 01:25:34 +0100 In-Reply-To: <87bky7viz2.fsf@mbork.pl> (Marcin Borkowski's message of "Tue, 15 Mar 2022 07:16:17 +0100") X-Provags-ID: V03:K1:zHJrHR0+ABviLYVp1PFiorRGxd5CDJNbVB7tJdCoU6godaYWy9j 711N8+LaKlS5MzjRYhrtSzLsSiILbi7sSbEZMnA5fOlzk56xMEIkgjVMQxRBOQtGnMGyPRb 5f89i//osSrATGXG5K2tdFvGI2EsjU8pnVKlH1a2Pmva+QbIt5hRldNOoye4lkAgV84VUkc d/Mv7NP30MbLTTpCP4lsg== X-UI-Out-Filterresults: notjunk:1;V03:K0:ZOlzfWV/Bow=:IXpHCeJCQD7WAcsXhtXQTb hrfObYxAXm7pS9doUkgHobT6j8pdiygLnOb0AHA1VqvjHaZGel6yjYOhM4MegUmvJrEp2I3Nc v2jpqyIg6YFBRyWGl5NCF9clsW1hFGLYKqUB3icsX3HN050sua0SuUhsGdUwElZbfTwmKO6dn xSKoOneL0UMi/bNFucg8zHkX0IYcUL/cogFAK/IMYHXgMlwPiJhrRJCd0ud67vvYHDF6pIE/B YZQtnSkIwIIxFn4L6z3qqXyXacr0KmZ/Hh35DisywTM6gwVwv1DY18uiTo2KZiQ6gWr2ldaSb cJS2vHTSPfyfi9VAkwT63eQqTadvPWXlnvlngSF1gJ9WRxVlMdjPHEodh1Qnhi3lTF56ciiR2 jx8oYW9jCPcrs80AcGQeNkp7PQKDCkFHxeujTNt7lFGFIqo1IWgOj/V/TIlTtJsjE9CMo9C5F fx2QT4LfVe3ODgLFOgYGlu6LpmIiLGBO8vsUsjwnp2Fmp/VL8MeghvR0MUszpM0m5S3Tlrzpg SymyzADEYVlvvY8c+NDPf+cGRlU6xVAz8IZCzviA3+14UbJbH2RCJvnTYHkaJFMzk/pBDNzXn PZ2RAxzjR8NkPf5jDq6QzHd1wnJscgfoXuulZcbOv74/+6AZ9pWPUOok/5YbifZsg3KVnK6Ke i3Pgazn2ad7l60vMwkOiQGRxkSDWrwuHOcwG3MpZu3a+xZUlqrtNVa7mmRlRqeAx5O34UPQaD Mu69z4Nqxa3z+HEjFUFIx0Mo5bQ28cf3rjqMVuMeflk8ohffwwjF3+AyoaH7yRyyTKpgjcY9 Received-SPF: pass client-ip=212.227.15.3; envelope-from=michael_heerdegen@web.de; helo=mout.web.de X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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" Xref: news.gmane.io gmane.emacs.help:136598 Archived-At: Marcin Borkowski writes: > Not necessarily. My use-case is an internal Emacs variable I'm setting > in my `init.el'; at the same time I submitted a bug report/feature > request to make it a user option, so I assume that it might change its > name in a future Emacs version. If that happens, compiling your init.el will then normally give you an "assignment to free variable" warning, no? Michael.