From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: =?utf-8?B?xaB0xJtww6FuIE7Em21lYw==?= Newsgroups: gmane.emacs.devel Subject: Re: why does `variable-at-point' return 0? Date: Thu, 19 Apr 2012 21:50:00 +0200 Message-ID: <87wr5blcwn.fsf@gmail.com> References: <2F0E226322EE44669007194BC8389F81@us.oracle.com> <717003EF5A184D8A91EF489C3A79EB92@us.oracle.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: dough.gmane.org 1334865022 26322 80.91.229.3 (19 Apr 2012 19:50:22 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 19 Apr 2012 19:50:22 +0000 (UTC) Cc: emacs-devel@gnu.org To: "Drew Adams" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Apr 19 21:50:19 2012 Return-path: Envelope-to: ged-emacs-devel@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 1SKxMw-0004fR-3V for ged-emacs-devel@m.gmane.org; Thu, 19 Apr 2012 21:50:18 +0200 Original-Received: from localhost ([::1]:34928 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKxMv-00007d-F4 for ged-emacs-devel@m.gmane.org; Thu, 19 Apr 2012 15:50:17 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:59950) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKxMs-00007L-Db for emacs-devel@gnu.org; Thu, 19 Apr 2012 15:50:15 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SKxMq-0004fc-Ly for emacs-devel@gnu.org; Thu, 19 Apr 2012 15:50:13 -0400 Original-Received: from mail-wi0-f177.google.com ([209.85.212.177]:59038) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKxMq-0004c3-Dk for emacs-devel@gnu.org; Thu, 19 Apr 2012 15:50:12 -0400 Original-Received: by wibhj13 with SMTP id hj13so1692620wib.12 for ; Thu, 19 Apr 2012 12:50:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:in-reply-to:references:user-agent:date :message-id:mime-version:content-type:content-transfer-encoding; bh=cq6IF4SSiN2BWOqZxDeLwX6r/rRjGOBjytgRiW3IqaM=; b=ROl0GWbP36uxEvuVvw628vM4A1/p4eGQyhCvvhtdmY/GlUFwlxKQplC5kjJA9/77m/ s9gXCx4k0LBKN1ign+KBR/GdzXt7rP+prILB6VtwXr522/pfAnweaAGcuVMNF/m5Nym5 5TECc1A9ZcSAlsr2418plXtu0FgQJOcFMbGozb6wBNp0XI6qXZvf/gTYOwebT87hqtxJ rIjgNYhjOvdJIej2Z0KVJ2g/SySsKB8D3e7lEdo9Ceqx/ErEixoHLlNhWZXSZZF0GkW5 Vulu9d8c2Y9IElBaG7jf9KHvHmp9cVOIioQUMTJwclYc6lT5xhk/GcH38nT+IIqKpUmz mkgw== Original-Received: by 10.180.104.231 with SMTP id gh7mr8293468wib.10.1334865008994; Thu, 19 Apr 2012 12:50:08 -0700 (PDT) Original-Received: from localhost (176.119.broadband10.iol.cz. [90.177.119.176]) by mx.google.com with ESMTPS id ev10sm44473274wid.10.2012.04.19.12.50.07 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 19 Apr 2012 12:50:08 -0700 (PDT) In-Reply-To: <717003EF5A184D8A91EF489C3A79EB92@us.oracle.com> (Drew Adams's message of "Mon, 16 Apr 2012 11:07:47 -0700") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 209.85.212.177 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:149836 Archived-At: On Mon, 16 Apr 2012 20:07:47 +0200 Drew Adams wrote: > ping > >> Just curious. Why doesn't `variable-at-point' return nil if=20 >> there is no variable at point? [...] >> What am I missing? Dunno if you're missing anything, but you're certainly not the only one wondering. FWIW, for my purposes I've been using the function below ever since I discovered `variable-at-point': (defun .variable-at-point () "Sanitized version of the utterly [CENSORED] `variable-at-point'. \(The latter returns 0 as the failure value. Very useful, indeed.)" (let ((v (variable-at-point))) (unless (eq v 0) v))) --=20 =C5=A0t=C4=9Bp=C3=A1n