From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-workers-return-27853-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 22537 invoked by alias); 1 Apr 2010 14:36:54 -0000
Mailing-List: contact zsh-workers-help@zsh.org; run by ezmlm
Precedence: bulk
X-No-Archive: yes
List-Id: Zsh Workers List <zsh-workers.zsh.org>
List-Post: <mailto:zsh-workers@zsh.org>
List-Help: <mailto:zsh-workers-help@zsh.org>
X-Seq: 27853
Received: (qmail 27262 invoked from network); 1 Apr 2010 14:36:51 -0000
X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE
	autolearn=ham version=3.3.1
Received-SPF: none (ns1.primenet.com.au: domain at closedmail.com does not designate permitted sender hosts)
From: Bart Schaefer <schaefer@brasslantern.com>
Message-id: <100401073618.ZM10593@torch.brasslantern.com>
Date: Thu, 01 Apr 2010 07:36:18 -0700
In-reply-to: <20100401082624.GA56998@redoubt.spodhuis.org>
Comments: In reply to Phil Pennock <zsh-workers+phil.pennock@spodhuis.org>
   "Re: Is this a bug? Why not?" (Apr  1,  1:26am)
References: <100330224612.ZM1818@torch.brasslantern.com>
	<20100331060602.GA91691@redoubt.spodhuis.org>
	<100331081153.ZM2688@torch.brasslantern.com>
	<20100401082624.GA56998@redoubt.spodhuis.org>
X-Mailer: OpenZMail Classic (0.9.2 24April2005)
To: zsh-workers@zsh.org
Subject: Re: Is this a bug? Why not?
MIME-version: 1.0
Content-type: text/plain; charset=us-ascii

On Apr 1,  1:26am, Phil Pennock wrote:
} Subject: Re: Is this a bug? Why not?
}
} On 2010-03-31 at 08:11 -0700, Bart Schaefer wrote:
} > Incidentally, this came up because of a discussion on the POSIX standards
} > mailing list (austin-group) in which David Korn just asserted that he'd
} > like to add the syntax ${"var"} which means to expand the value of var
} > as if it's quoted (what zsh's normal mode does all the time).
} > 
} > I was hoping to be able to say "Oh, zsh already has syntax XYZ for that"
} > but in fact we don't -- zsh either always, or never, does it, depending
} > on the globsubst option; there's no way to flip globsubst on the fly.
} 
} No *neat* syntax.
} 
} % ls
} lib         viewvc.conf
} % print -l ${~~foo-${(~):-*}}

That isn't really what you mean, is it?  The (~) flag only applies to
the (j::) et al. strings.

However, it's not even necessary to do the ${:-*} thing, ${~~foo-*} is
sufficient.

For austin-group purposes, however, I was hoping for something that did
not rely on parameter expansion flags.  E.g., why doesn't the following
cause $foo to be quoted?

schaefer[516] ARGV0=sh Src/zsh
$ foo="???"
$ print ${foo+"$foo"}
Doc Etc Src
$ 

It works in bash.