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: Advice function needs argument not used in function, how to avoid compiler warning? Date: Thu, 06 Oct 2022 00:30:28 +0200 Message-ID: <8735c1j43f.fsf@web.de> References: <0790cee102b2a16c066c0527ea67914f.support1@rcdrun.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3525"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:/lfSpxg+Wi/Ef9Z9wzp3bQ1sMlk= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Thu Oct 06 00:31:24 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 1ogCvD-0000js-SB for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 06 Oct 2022 00:31:23 +0200 Original-Received: from localhost ([::1]:45170 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ogCvC-0006K1-Co for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 05 Oct 2022 18:31:22 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39254) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ogCuW-0006IW-AP for help-gnu-emacs@gnu.org; Wed, 05 Oct 2022 18:30:40 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:49616) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ogCuU-0000ul-Nd for help-gnu-emacs@gnu.org; Wed, 05 Oct 2022 18:30:40 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1ogCuS-000AKi-5H for help-gnu-emacs@gnu.org; Thu, 06 Oct 2022 00:30:36 +0200 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: -13 X-Spam_score: -1.4 X-Spam_bar: - X-Spam_report: (-1.4 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, 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" Xref: news.gmane.io gmane.emacs.help:139725 Archived-At: Jean Louis writes: > I realize that advice function need argument such as &rest args, but I > am not using it in the function. And I do not understand what is that > argument receiving. Anybody may explain it? > > I have to do (ignore args) to avoid compiler warning. What does args > receive? The arguments of the current call of the advised function, in the case of an :after advice. In the general case that depends on the kind of advice (see docstring of `advice-add', the HOW arg). > (defun hyperscope-after-sort (&rest args) > (ignore args) > (hyperscope-highlight)) You can just use `_args` to label the argument as unused by the function body - it's the same as for all functions. Michael.