From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-26823-listarch-gdb=sources.redhat.com@sourceware.org>
Received: (qmail 31663 invoked by alias); 10 Nov 2006 23:33:57 -0000
Received: (qmail 31655 invoked by uid 22791); 10 Nov 2006 23:33:57 -0000
X-Spam-Check-By: sourceware.org
Received: from viper.snap.net.nz (HELO viper.snap.net.nz) (202.37.101.8)     by sourceware.org (qpsmtpd/0.31) with ESMTP; Fri, 10 Nov 2006 23:33:49 +0000
Received: from kahikatea.snap.net.nz (p202-124-120-183.snap.net.nz [202.124.120.183]) 	by viper.snap.net.nz (Postfix) with ESMTP id 5C5293D8264; 	Sat, 11 Nov 2006 12:33:58 +1300 (NZDT)
Received: by kahikatea.snap.net.nz (Postfix, from userid 500) 	id 5DBBEBE439; Sat, 11 Nov 2006 12:29:51 +1300 (NZDT)
From: Nick Roberts <nickrob@snap.net.nz>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-ID: <17749.2926.508338.599064@kahikatea.snap.net.nz>
Date: Fri, 10 Nov 2006 23:33:00 -0000
To: Eli Zaretskii <eliz@gnu.org>
Cc: gdb@sources.redhat.com
Subject: Re: -var-show-attributes response syntax
In-Reply-To: <u8xiikieg.fsf@gnu.org>
References: <200611101655.32843.vladimir@codesourcery.com> 	<17748.43269.740800.782628@kahikatea.snap.net.nz> 	<ud57vj7pt.fsf@gnu.org> 	<17748.62479.550269.959106@kahikatea.snap.net.nz> 	<u8xiikieg.fsf@gnu.org>
X-Mailer: VM 7.19 under Emacs 22.0.90.12
X-IsSubscribed: yes
Mailing-List: contact gdb-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Subscribe: <mailto:gdb-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb/>
List-Post: <mailto:gdb@sourceware.org>
List-Help: <mailto:gdb-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-owner@sourceware.org
X-SW-Source: 2006-11/txt/msg00068.txt.bz2

 > Sorry, I no longer understand the problem you were talking about.
 > AFAICS, the `{}' are literal (and so don't need to be discussed),
 > while `|' is _not_ a literal character and is already documented in
 > "Notation and Terminology".  What am I missing?

>From "GDB/MI Variable Objects" in the manual:

      lang=LANG-SPEC,exp=EXPRESSION

  where LANG-SPEC is `{"C" | "C++" | "Java"}'.

means e.g lang="C" not lang={"C"}

      status=ATTR [ ( ,ATTR )* ]

  where ATTR is `{ { editable | noneditable } | TBD }'.

means e.g attr="editable" not attr={{"editable"}}

As Andreas says, status=ATTR should be attr=ATTR.  Also editable | noneditable
should presumably be strings:

  where ATTR is `{ { "editable" | "noneditable" } | TBD }'.

Having said that I always find it hard to use one syntax to describe another
in an unambiguous way and it's not that hard to find out what is meant by
invoking GDB with MI.


-- 
Nick                                           http://www.inet.net.nz/~nickrob