X-Spam-Check-By: sourceware.org Message-ID: <4682529E.6060107@byu.net> Date: Wed, 27 Jun 2007 06:05:50 -0600 From: Eric Blake User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.12) Gecko/20070509 Thunderbird/1.5.0.12 Mnenhy/0.7.5.666 MIME-Version: 1.0 To: Richard A Nelson CC: cygwin@cygwin.com Subject: Re: Bash is broken wrt trap :( References: <4681CDCD.7030709@linux.vnet.ibm.com> <4681DFBD.7040906@byu.net> <46820824.6000602@linux.vnet.ibm.com> In-Reply-To: <46820824.6000602@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 According to Richard A Nelson on 6/27/2007 12:48 AM: > OS=AIX > bash=3.00.16(1)-release > > OS=Linux << RH EL WS 4 (Nahant) > bash=3.00.15(1)-release Just as I suspected. You are comparing apples to oranges. Until you run bash 3.2 on all machines, you can't be sure that it was an intentional upstream change between bash 3.0 and 3.2, rather than a cygwin-specific compilation botch. > However, the return trap is defined to execute in the context of the > caller, after the called function has completed... and since all it > does is execute > 'false', it does cause the parents ERR trap to trigger, and things go > pretty smoothly (on some machines). All that man bash says is "If a sigspec is RETURN, the command arg is executed each time a shell function or a script executed with the . or source builtins finishes executing". It doesn't say whether the trap is run in the context of the function or of the caller. This is not cygwin-specific - you will need to take your report upstream to the bash maintainer. - -- Don't work too hard, make some time for fun as well! Eric Blake ebb9@byu.net -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGglKd84KuGfSFAYARAm4/AJ44reipi6QeuQLXzzPaDVeEnqUWwgCcCtlo DAnPuAhQe46y9zUNQO4vMMQ= =ppDh -----END PGP SIGNATURE----- -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/