From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10249 invoked by alias); 5 Feb 2006 21:57:02 -0000 Received: (qmail 10240 invoked by uid 22791); 5 Feb 2006 21:57:02 -0000 X-Spam-Check-By: sourceware.org Received: from nevyn.them.org (HELO nevyn.them.org) (66.93.172.17) by sourceware.org (qpsmtpd/0.31.1) with ESMTP; Sun, 05 Feb 2006 21:57:01 +0000 Received: from drow by nevyn.them.org with local (Exim 4.54) id 1F5rsR-0001tg-3f for gdb-patches@sourceware.org; Sun, 05 Feb 2006 16:56:59 -0500 Date: Sun, 05 Feb 2006 21:57:00 -0000 From: Daniel Jacobowitz To: gdb-patches@sourceware.org Subject: Re: RFA: Support Windows extended error numbers in safe_strerror Message-ID: <20060205215659.GA7232@nevyn.them.org> Mail-Followup-To: gdb-patches@sourceware.org References: <20060203233935.GA13238@trixie.casa.cgf.cx> <20060204032730.GB9890@nevyn.them.org> <200602041435.k14EZ6NK016329@elgar.sibelius.xs4all.nl> <20060205001503.GB8728@trixie.casa.cgf.cx> <20060205193440.GB4718@trixie.casa.cgf.cx> <20060205202222.GB5574@nevyn.them.org> <20060205215036.GE4718@trixie.casa.cgf.cx> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060205215036.GE4718@trixie.casa.cgf.cx> User-Agent: Mutt/1.5.8i X-IsSubscribed: yes Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org X-SW-Source: 2006-02/txt/msg00105.txt.bz2 On Sun, Feb 05, 2006 at 04:50:36PM -0500, Christopher Faylor wrote: > On Sun, Feb 05, 2006 at 03:22:22PM -0500, Daniel Jacobowitz wrote: > >On Sun, Feb 05, 2006 at 10:19:12PM +0200, Eli Zaretskii wrote: > >> > The shell is needed for the "shell" command. The shell is not used for > >> > running programs. > >> > >> The latter is unlike on Posix platforms, right? > > > >That is an implementation artifact that, IMO, we desperately need to > >move away from. It's a continual source of trouble from e.g. > >unexpected variable settings in shell initialization files, and it's > >an aggravating (to me) external dependency for GDB. > > I did try to implement this artifact in Cygwin once but I never got > it right. > > Isn't the shell used to allow redirection and shell-like quoting from > the gdb command-line? Lack of redirection, at least, is an occasional > complaint about gdb-under-cygwin. That's right; and we certainly can't ditch that support. But what we do today is pass the command line arguments directly to a shell, which means all sorts of worrying about quoting, and also means that we get Bourne shell behavior if the user has an appropriate $SHELL, or C shell if they're using csh/tcsh, et cetera. I don't know if anyone takes advantage of that as a feature, but it's sure confusing! I keep telling myself we ought to somehow get rid of this, but I'm fuzzy on the details. -- Daniel Jacobowitz CodeSourcery