From owner-freebsd-doc@FreeBSD.ORG Thu Nov 16 21:45:24 2006 Return-Path: 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 C205D16A417; Thu, 16 Nov 2006 21:45:24 +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 DF48343D60; Thu, 16 Nov 2006 21:45:23 +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 kAGLjM91051744; Fri, 17 Nov 2006 00:45:22 +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 kAGLjLna051743; Fri, 17 Nov 2006 00:45:21 +0300 (MSK) (envelope-from yar) Date: Fri, 17 Nov 2006 00:45:21 +0300 From: Yar Tikhiy To: Andrew Pantyukhin Message-ID: <20061116214521.GD49602@comp.chem.msu.su> References: <20061015173531.GB31717@comp.chem.msu.su> <20061116204551.GB49602@comp.chem.msu.su> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Nov 2006 21:45:24 -0000 On Thu, Nov 16, 2006 at 11:59:06PM +0300, Andrew Pantyukhin wrote: > On 11/16/06, Yar Tikhiy wrote: > >On Sun, Oct 29, 2006 at 08:18:50PM +0300, Andrew Pantyukhin wrote: > >> On 10/15/06, Yar Tikhiy 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. > > I understand that you personally may be authoritative > enough to make such statements, but it's not a matter > of style. If null values were overridden, quite a lot > of things would break right away. Try to "grep -h ^: *" > in prefix/etc/rc.d on a box with a lot of packages > installed and you'll see that only one or two percent > of null variables are overridden. > > Sorry if I misunderstand you completely. Note that "grep ^: *" in /etc/rc.d finds nothing. Also note that _some_ rc.d variables can be sensitive to this issue. However, /etc/rc.subr doesn't tell unset state from null state for those variables that don't need to be sensitive. Would you mind moving this thread to freebsd-rc? It's off-topic here, on freebsd-doc. -- Yar