From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Kitchin Subject: Re: What does the _ in `(defun org-element-section-parser (_) ...)' stands for? Date: Tue, 09 Feb 2016 13:59:51 -0500 Message-ID: References: <87vb5xsrqa.fsf@gmail.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:34521) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aTDW2-0001fu-3e for emacs-orgmode@gnu.org; Tue, 09 Feb 2016 13:59:59 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aTDVy-0006NR-Rc for emacs-orgmode@gnu.org; Tue, 09 Feb 2016 13:59:58 -0500 Received: from mail-qg0-x236.google.com ([2607:f8b0:400d:c04::236]:34404) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aTDVy-0006NN-NV for emacs-orgmode@gnu.org; Tue, 09 Feb 2016 13:59:54 -0500 Received: by mail-qg0-x236.google.com with SMTP id b67so60081193qgb.1 for ; Tue, 09 Feb 2016 10:59:54 -0800 (PST) In-reply-to: <87vb5xsrqa.fsf@gmail.com> List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org To: Thorsten Jolitz Cc: emacs-orgmode@gnu.org I guess it is a required signature for the function (i.e. some other function will call it with some argument), and _ indicates it is not used in the body. If you were to give it the arg a name, then checkdoc would complain about it not being in the docstring. Thorsten Jolitz writes: > Hi List, > just out of curiosity, a few functions in org-element.el contain _ in > their parameter list, but its not used in the body. > What does it stand for? -- Professor John Kitchin Doherty Hall A207F Department of Chemical Engineering Carnegie Mellon University Pittsburgh, PA 15213 412-268-7803 @johnkitchin http://kitchingroup.cheme.cmu.edu