From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19127 invoked from network); 14 Jul 2009 22:07:09 -0000 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on f.primenet.com.au X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00 autolearn=ham version=3.2.5 Received: from new-brage.dotsrc.org (HELO a.mx.sunsite.dk) (130.225.254.104) by ns1.primenet.com.au with SMTP; 14 Jul 2009 22:07:09 -0000 Received-SPF: none (ns1.primenet.com.au: domain at sunsite.dk does not designate permitted sender hosts) Received: (qmail 67436 invoked from network); 14 Jul 2009 21:59:43 -0000 Received: from sunsite.dk (130.225.247.90) by a.mx.sunsite.dk with SMTP; 14 Jul 2009 21:59:43 -0000 Received: (qmail 25245 invoked by alias); 14 Jul 2009 21:59:35 -0000 Mailing-List: contact zsh-workers-help@sunsite.dk; run by ezmlm Precedence: bulk X-No-Archive: yes X-Seq: 27149 Received: (qmail 25225 invoked from network); 14 Jul 2009 21:59:34 -0000 Received: from bifrost.dotsrc.org (130.225.254.106) by sunsite.dk with SMTP; 14 Jul 2009 21:59:34 -0000 Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by bifrost.dotsrc.org (Postfix) with ESMTPS id 66AED8027106 for ; Tue, 14 Jul 2009 23:59:31 +0200 (CEST) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1MQq26-0002zk-2w for zsh-workers@sunsite.dk; Tue, 14 Jul 2009 21:59:30 +0000 Received: from l3-128-170-36-102.l-3com.com ([128.170.36.102]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 14 Jul 2009 21:59:30 +0000 Received: from ebb9 by l3-128-170-36-102.l-3com.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 14 Jul 2009 21:59:30 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: zsh-workers@sunsite.dk From: Eric Blake Subject: cd bugs Date: Tue, 14 Jul 2009 21:59:14 +0000 (UTC) Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: main.gmane.org User-Agent: Loom/3.14 (http://gmane.org/) X-Loom-IP: 128.170.36.102 (Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11 (.NET CLR 3.5.30729)) Sender: news X-Virus-Scanned: ClamAV 0.94.2/9566/Tue Jul 14 21:57:47 2009 on bifrost X-Virus-Status: Clean POSIX requires cd to give output if a nonempty entry in CDPATH played a role, or if 'cd -' was used. Therefore, this line demonstrates two zsh bugs: $ zsh -c 'emulate -R sh; cd /tmp; mkdir -p d; CDPATH=.; cd d; cd -; rmdir d' $ bash -c 'cd /tmp; mkdir -p d; CDPATH=.; cd d; cd -; rmdir d' /tmp/d /tmp $ while bash was correct in printing the absolute name of d and its parent. When fixing this, be sure that you don't break $ zsh -c 'emulate -R sh; mkdir foo; CDPATH=:; cd foo' since POSIX states that particular use must remain silent (an implicit . used from an empty CDPATH entry is different than an explicit . in CDPATH). Another bug, mainly visible on platforms like cygwin where leading // is special as allowed by POSIX (in particular, on my cygwin machin, //eblake exists but not /eblake): $ zsh -c 'emulate -R sh; CDPATH=///; cd eblake; /bin/pwd' //eblake $ bash -c 'CDPATH=///; cd eblake; /bin/pwd' bash: line 0: cd: eblake: No such file or directory /tmp $ Since POSIX requires ///eblake to be synonymous with /eblake, and /eblake does not exist, only bash was correct in printing an error and not changing location. -- Eric Blake