From owner-freebsd-doc@FreeBSD.ORG  Thu Nov 16 20:46:02 2006
Return-Path: <owner-freebsd-doc@FreeBSD.ORG>
X-Original-To: doc@FreeBSD.org
Delivered-To: freebsd-doc@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 6233916A417;
	Thu, 16 Nov 2006 20:46:02 +0000 (UTC)
	(envelope-from yar@comp.chem.msu.su)
Received: from comp.chem.msu.su (comp.chem.msu.su [158.250.32.97])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 4529F43D72;
	Thu, 16 Nov 2006 20:45:53 +0000 (GMT)
	(envelope-from yar@comp.chem.msu.su)
Received: from comp.chem.msu.su (localhost [127.0.0.1])
	by comp.chem.msu.su (8.13.4/8.13.3) with ESMTP id kAGKjpmQ050677;
	Thu, 16 Nov 2006 23:45:52 +0300 (MSK)
	(envelope-from yar@comp.chem.msu.su)
Received: (from yar@localhost)
	by comp.chem.msu.su (8.13.4/8.13.3/Submit) id kAGKjpW8050676;
	Thu, 16 Nov 2006 23:45:51 +0300 (MSK) (envelope-from yar)
Date: Thu, 16 Nov 2006 23:45:51 +0300
From: Yar Tikhiy <yar@comp.chem.msu.su>
To: Andrew Pantyukhin <infofarmer@FreeBSD.org>
Message-ID: <20061116204551.GB49602@comp.chem.msu.su>
References: <20061015173531.GB31717@comp.chem.msu.su>
	<cb5206420610290918g2d6246bdhd3465d2e88f99e4f@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <cb5206420610290918g2d6246bdhd3465d2e88f99e4f@mail.gmail.com>
User-Agent: Mutt/1.5.9i
Cc: doc@FreeBSD.org
Subject: Re: New article
X-BeenThere: freebsd-doc@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Documentation project <freebsd-doc.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-doc>,
	<mailto:freebsd-doc-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-doc>
List-Post: <mailto:freebsd-doc@freebsd.org>
List-Help: <mailto:freebsd-doc-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-doc>,
	<mailto:freebsd-doc-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 16 Nov 2006 20:46:02 -0000

On Sun, Oct 29, 2006 at 08:18:50PM +0300, Andrew Pantyukhin wrote:
> On 10/15/06, Yar Tikhiy <yar@comp.chem.msu.su> wrote:
> >Hi folks,
> 
> Great article, thanks!

Thank you!

> How about
> -eval "${rcvar}=\${${rcvar}:-'NO'}"
> +eval : \${${rcvar}='NO'}
> (a little more concise/readable; does not override
> explicit null value, which might not be valid, but
> should probably be respected all the same)

The former expression agrees better with the current style of rc.subr
and rc.d; in particular, null and unset values are treated the same.

-- 
Yar