From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 29920 invoked from network); 22 Sep 2004 15:45:02 -0000 Received: from news.dotsrc.org (HELO a.mx.sunsite.dk) (130.225.247.88) by ns1.primenet.com.au with SMTP; 22 Sep 2004 15:45:02 -0000 Received: (qmail 42118 invoked from network); 22 Sep 2004 15:44:57 -0000 Received: from sunsite.dk (130.225.247.90) by a.mx.sunsite.dk with SMTP; 22 Sep 2004 15:44:57 -0000 Received: (qmail 29476 invoked by alias); 22 Sep 2004 15:44:54 -0000 Mailing-List: contact zsh-workers-help@sunsite.dk; run by ezmlm Precedence: bulk X-No-Archive: yes X-Seq: 20402 Received: (qmail 29462 invoked from network); 22 Sep 2004 15:44:53 -0000 Received: from news.dotsrc.org (HELO a.mx.sunsite.dk) (130.225.247.88) by sunsite.dk with SMTP; 22 Sep 2004 15:44:53 -0000 Received: (qmail 41881 invoked from network); 22 Sep 2004 15:44:53 -0000 Received: from lhuumrelay3.lnd.ops.eu.uu.net (62.189.58.19) by a.mx.sunsite.dk with SMTP; 22 Sep 2004 15:44:52 -0000 Received: from MAILSWEEPER01.csr.com (mailhost1.csr.com [62.189.183.235]) by lhuumrelay3.lnd.ops.eu.uu.net (8.11.0/8.11.0) with ESMTP id i8MFinv13470 for ; Wed, 22 Sep 2004 15:44:49 GMT Received: from EXCHANGE02.csr.com (unverified [192.168.137.45]) by MAILSWEEPER01.csr.com (Content Technologies SMTPRS 4.3.12) with ESMTP id for ; Wed, 22 Sep 2004 16:43:50 +0100 Received: from news01.csr.com ([192.168.143.38]) by EXCHANGE02.csr.com with Microsoft SMTPSVC(5.0.2195.6713); Wed, 22 Sep 2004 16:46:21 +0100 Received: from news01.csr.com (localhost.localdomain [127.0.0.1]) by news01.csr.com (8.12.11/8.12.11) with ESMTP id i8MFihJX012035 for ; Wed, 22 Sep 2004 16:44:43 +0100 Received: from csr.com (pws@localhost) by news01.csr.com (8.12.11/8.12.11/Submit) with ESMTP id i8MFigp9012032 for ; Wed, 22 Sep 2004 16:44:43 +0100 Message-Id: <200409221544.i8MFigp9012032@news01.csr.com> X-Authentication-Warning: news01.csr.com: pws owned process doing -bs To: zsh-workers@sunsite.dk Subject: Re: PATCH: zsh-4.2.1: unset does not follow spec In-reply-to: <20040922091323.V45751@thor.farley.org> References: <20040922091323.V45751@thor.farley.org> Date: Wed, 22 Sep 2004 16:44:41 +0100 From: Peter Stephenson X-OriginalArrivalTime: 22 Sep 2004 15:46:21.0882 (UTC) FILETIME=[4F0D59A0:01C4A0BB] X-Spam-Checker-Version: SpamAssassin 2.63 on a.mx.sunsite.dk X-Spam-Level: X-Spam-Status: No, hits=-0.0 required=6.0 tests=BAYES_44 autolearn=no version=2.63 X-Spam-Hits: -0.0 We discussed this problem with unset before. I don't think we were interested enough to do anything about it. However, I think the requirement that unsetting an unset variable isn't an error is explicit. It's a question (I'm sure I or someone said this last time) of whether you want to know whether the variable was unset by the call, or was in an unset state at the end of the call. I can see why you might consider the latter more useful. After all, you wouldn't want setting a variable to fail if it was already set. The zsh documentation isn't explicit about the return status. So I wouldn't think there's any harm in the change. -- Peter Stephenson Software Engineer CSR Ltd., Science Park, Milton Road, Cambridge, CB4 0WH, UK Tel: +44 (0)1223 692070 ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **********************************************************************