From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: How to test if the current line contains only white-spache? Date: Thu, 19 Nov 2015 03:18:28 +0100 Message-ID: <87y4dud957.fsf@debian.uxu> References: <87r3js7e8l.fsf@linux-qg7d.fritz.box> <874mgnystc.fsf@point.pointsman.de> <87d1v67nwo.fsf@linux-qg7d.fritz.box> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1447899554 24585 80.91.229.3 (19 Nov 2015 02:19:14 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 19 Nov 2015 02:19:14 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Nov 19 03:19:04 2015 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZzEoR-0005Vl-Jq for geh-help-gnu-emacs@m.gmane.org; Thu, 19 Nov 2015 03:19:03 +0100 Original-Received: from localhost ([::1]:39197 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZzEoR-0006gu-3p for geh-help-gnu-emacs@m.gmane.org; Wed, 18 Nov 2015 21:19:03 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39549) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZzEoC-0006fN-Vf for help-gnu-emacs@gnu.org; Wed, 18 Nov 2015 21:18:49 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZzEo8-0006t1-6B for help-gnu-emacs@gnu.org; Wed, 18 Nov 2015 21:18:48 -0500 Original-Received: from plane.gmane.org ([80.91.229.3]:59210) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZzEo7-0006sx-Vk for help-gnu-emacs@gnu.org; Wed, 18 Nov 2015 21:18:44 -0500 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1ZzEo5-0004rV-CU for help-gnu-emacs@gnu.org; Thu, 19 Nov 2015 03:18:41 +0100 Original-Received: from nl106-137-244.student.uu.se ([130.243.137.244]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 19 Nov 2015 03:18:41 +0100 Original-Received: from embe8573 by nl106-137-244.student.uu.se with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 19 Nov 2015 03:18:41 +0100 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Original-Lines: 19 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: nl106-137-244.student.uu.se Mail-Copies-To: never User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux) Cancel-Lock: sha1:A0Tm7UrBQoDMjBkzmKjgaC/RWHY= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 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.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:108127 Archived-At: Stefan Monnier writes: >> Btw, what should this -p naming convention signal >> to me? > > That it's a "p"redicate. Here [1] it says A predicate is a function that tests for some condition involving its arguments and returns nil if the condition is false, or some non-nil value if the condition is true. [1] https://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node69.html -- underground experts united http://user.it.uu.se/~embe8573