From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: dieter@duenenhof-wilhelm.de (H. Dieter Wilhelm) Newsgroups: gmane.emacs.help Subject: Confusion about elisp symbols and defuns Date: Wed, 24 Sep 2014 09:23:01 +0200 Organization: The Church of Emacs Message-ID: <87mw9pjxd6.fsf@vsl28t2g.ww011> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1411543824 21703 80.91.229.3 (24 Sep 2014 07:30:24 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 24 Sep 2014 07:30:24 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Sep 24 09:30:18 2014 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 1XWh1k-0005LO-FS for geh-help-gnu-emacs@m.gmane.org; Wed, 24 Sep 2014 09:30:16 +0200 Original-Received: from localhost ([::1]:57975 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XWh1j-0004Ta-WC for geh-help-gnu-emacs@m.gmane.org; Wed, 24 Sep 2014 03:30:16 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51478) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XWgvF-0002IV-3I for help-gnu-emacs@gnu.org; Wed, 24 Sep 2014 03:23:40 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XWgv7-0005pm-4v for help-gnu-emacs@gnu.org; Wed, 24 Sep 2014 03:23:33 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:50452) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XWgv6-0005o0-Ub for help-gnu-emacs@gnu.org; Wed, 24 Sep 2014 03:23:25 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1XWgv0-0006sR-Sf for help-gnu-emacs@gnu.org; Wed, 24 Sep 2014 09:23:18 +0200 Original-Received: from p4fd4e352.dip0.t-ipconnect.de ([79.212.227.82]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 24 Sep 2014 09:23:18 +0200 Original-Received: from dieter by p4fd4e352.dip0.t-ipconnect.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 24 Sep 2014 09:23:18 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 62 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: p4fd4e352.dip0.t-ipconnect.de User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.93 (gnu/linux) Cancel-Lock: sha1:Sb5BxnHd2cPv7Nn9mA7aWzePH3U= 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:100118 Archived-At: Hello (), Calc checks in calc-var-value if variables are bound. This works for examplwe with the variable symbol `g' (calc-var-value 'g) nil but bombs for the variable `v' (calc-var-value 'v) => error The reason seems to me that somehow over the parameter name (v) of the defun the symbol `v' becomes bound. (Excuse my layman interpretation.) (makunbound 'g) g (makunbound 'v) v (symbolp 'v) t (boundp 'v) nil (boundp 'g) nil (defun bla (v) (boundp v)) bla (bla 'g) nil (bla 'v) t (defun foo (v) (makunbound v) (boundp v)) foo (foo 'g) nil (foo 'v) => error signal How would you change the calc-var-value to avoid this trap? Thanks for any enlightenment Dieter -- Best wishes H. Dieter Wilhelm Darmstadt, Germany