From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-workers-return-29889-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 23872 invoked by alias); 2 Nov 2011 12:18:48 -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: 29889
Received: (qmail 11084 invoked from network); 2 Nov 2011 12:18:47 -0000
X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-1.6 required=5.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED,
	DKIM_SIGNED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED,RCVD_IN_DNSWL_LOW,
	T_DKIM_INVALID autolearn=no version=3.3.2
Received-SPF: pass (ns1.primenet.com.au: SPF record at _spf.google.com designates 209.85.212.43 as permitted sender)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        bh=VyJXaa96C/EpbaJf4FJmwjx/3blh7owE+1lKmxqhmxA=;
        b=iQeIbSYddyU+2eLzTteAqT0B+RY3sld2KP/VmKPd5sIs7bp/L6xxEMNB/I9sPiKZ0t
         AH+qyQDUu3QMuPzQIyBcYLmq72iVJ19Y8mdfqges6POltVGtWIZcZJr2exDrDrVPawSX
         Dm2wE9pN+xSJSZJ9LO5RqdKW1D/cFDGtCUzrg=
MIME-Version: 1.0
In-Reply-To: <20111102120649.GB6375@yahoo.fr>
References: <20111102033545.GI28043@solfire>
	<CAHSx_SsGPHWkGfspXKo39oZ6G3Rd+H-8_2PAuixHmW94d4VCEg__34702.1825182766$1320210589$gmane$org@mail.gmail.com>
	<slrnjb228m.67l.stephane.chazelas@spam.is.invalid>
	<CAHYJk3QK6UzAcsQBwoV2rMk9Kga063_pRx8gGXHAoMgie5+_sA@mail.gmail.com>
	<20111102120649.GB6375@yahoo.fr>
Date: Wed, 2 Nov 2011 13:13:19 +0100
Message-ID: <CAHYJk3Sm6CKpfs6EAfwrao2WZbJYVGXG=QjDbRMq3DSVdBTYEQ@mail.gmail.com>
Subject: Re: Array as parameter
From: Mikael Magnusson <mikachu@gmail.com>
To: Mikael Magnusson <mikachu@gmail.com>, zsh-workers@zsh.org
Content-Type: text/plain; charset=UTF-8

On 2 November 2011 13:06, Stephane Chazelas <stephane_chazelas@yahoo.fr> wrote:
> 2011-11-02 11:14:38 +0100, Mikael Magnusson:
>> On 2 November 2011 10:10, Stephane CHAZELAS <stephane_chazelas@yahoo.fr> wrote:
>> > 2011-11-1, 22:00(-07), Wayne Davison:
>> >> However, if you need to be able to keep the array
>> >> parameter separate from other parameters, you could instead refer to the
>> >> variable whose name you passed in using ${(P)1} in your function in place
>> >> of the $1.
>> >
>> > Except that it doesn't work for arrays. You'd need to  use eval
>> > here.
>>
>> (P) works perfectly fine with arrays.
> [...]
>
> Indeed, though it seems you have to write it as "${${(@P)1}[@]}", I'm not too sure why.

You need to specify @ at every nesting level that's inside double
quotes to prevent scalar joining. At the ${(P)b[@]} level, if that was
an implied question, the subscript is applied first:


> ~/install/cvs/pixz$ zsh -c 'a=("" "a b" c d); b=a; print -l "${${(P)b}[@]}"'
>  a b c d
> ~/install/cvs/pixz$ zsh -c 'a=("" "a b" c d); b=a; print -l "${${(@P)b}[@]}"'
>
> a b
> c
> d

But this is shorter,
% zsh -c 'a=("" "a b" c d); b=a; print -l "${(@P)b}"'

a b
c
d


-- 
Mikael Magnusson