From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Marcin Borkowski Newsgroups: gmane.emacs.help Subject: Re: How to avoid introducing global symbols by setq in function? Date: Fri, 18 Nov 2016 09:33:30 +0100 Message-ID: <87shqpmbl1.fsf@mbork.pl> References: <87r369384z.fsf@jun.debian8.nb> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1479458042 2479 195.159.176.226 (18 Nov 2016 08:34:02 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 18 Nov 2016 08:34:02 +0000 (UTC) User-Agent: mu4e 0.9.17; emacs 26.0.50.3 Cc: help-gnu-emacs@gnu.org To: zhanghj Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Nov 18 09:33:57 2016 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1c7ecP-00006h-G3 for geh-help-gnu-emacs@m.gmane.org; Fri, 18 Nov 2016 09:33:57 +0100 Original-Received: from localhost ([::1]:35131 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c7ecS-0008Et-JB for geh-help-gnu-emacs@m.gmane.org; Fri, 18 Nov 2016 03:34:00 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:46021) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c7ebx-0008Ek-8h for help-gnu-emacs@gnu.org; Fri, 18 Nov 2016 03:33:29 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c7ebt-0004bL-Bu for help-gnu-emacs@gnu.org; Fri, 18 Nov 2016 03:33:29 -0500 Original-Received: from mail.mojserwer.eu ([195.110.48.8]:41880) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c7ebt-0004aw-54 for help-gnu-emacs@gnu.org; Fri, 18 Nov 2016 03:33:25 -0500 Original-Received: from localhost (localhost [127.0.0.1]) by mail.mojserwer.eu (Postfix) with ESMTP id E1333E6524; Fri, 18 Nov 2016 09:33:09 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at mail.mojserwer.eu Original-Received: from mail.mojserwer.eu ([127.0.0.1]) by localhost (mail.mojserwer.eu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Bg3Tpy6wRoRD; Fri, 18 Nov 2016 09:33:07 +0100 (CET) Original-Received: from localhost (static-dwadziewiec-jedenpiec7.echostar.pl [109.232.29.157]) by mail.mojserwer.eu (Postfix) with ESMTPSA id D389AE62B5; Fri, 18 Nov 2016 09:33:07 +0100 (CET) In-reply-to: <87r369384z.fsf@jun.debian8.nb> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x [fuzzy] X-Received-From: 195.110.48.8 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.help:111740 Archived-At: On 2016-11-18, at 02:10, zhanghj wrote: > As in the following code: > > (let ((var1 100)) ;; default value > (when some_condition > ;; new value > (setq varl 200)) > (message "value: %d" varl)) > > Should use "var1", but write "varl" by typo. > If some_condition is non-nil, there will be no error and no warnning. > > How to check these mistakes? Have you tried to byte-compile that code? Best, -- Marcin Borkowski