From owner-freebsd-hackers  Mon Mar  6 10:46:32 2000
Delivered-To: freebsd-hackers@freebsd.org
Received: from server.baldwin.cx (jobaldwi.campus.vt.edu [198.82.67.146])
	by hub.freebsd.org (Postfix) with ESMTP id 964D937BF84
	for <hackers@FreeBSD.org>; Mon,  6 Mar 2000 10:46:19 -0800 (PST)
	(envelope-from jhb@FreeBSD.org)
Received: from john.baldwin.cx (john [10.0.0.2])
	by server.baldwin.cx (8.9.3/8.9.3) with ESMTP id NAA02386;
	Mon, 6 Mar 2000 13:45:44 -0500 (EST)
	(envelope-from jhb@FreeBSD.org)
Message-Id: <200003061845.NAA02386@server.baldwin.cx>
X-Mailer: XFMail 1.4.0 on FreeBSD
X-Priority: 3 (Normal)
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 8bit
MIME-Version: 1.0
In-Reply-To: <38C3737B.63ACC551@gorean.org>
Date: Mon, 06 Mar 2000 13:45:44 -0500 (EST)
From: John Baldwin <jhb@FreeBSD.org>
To: Doug Barton <Doug@gorean.org>
Subject: Re: empty lists in for
Cc: hackers@FreeBSD.org, Max Khon <fjoe@iclub.nsu.ru>,
	Sheldon Hearn <sheldonh@uunet.co.za>
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG


On 06-Mar-00 Doug Barton wrote:
> I just checked POSIX 1003.2.
> 
> for name [ in word ] 
> do
>         compound-list
> done
> 
> the "in word" is optional. Therefore:
> 
> for name in ; do echo $name; done
> 
> is an error, whereas
> 
> for name ; do echo $name; done

These are two different functions.  The second one loops through the
command line parameters.

> is not, and Bash does not report it as so, in or out of POSIX mode.
> Also, your snippet clearly expects that there will be a word after "in."
> It could easily be argued from that context that the presence of "in"
> without a "word" to go with it is an error, even without the bit from
> Martin's post. 
> 
>       All that said, if the ports make system depends on the current
> behavior, it has to be fixed before we can contemplate any changes.

Patches accepted.

> Doug

-- 

John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.cslab.vt.edu/~jobaldwi/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message