From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-workers-return-41292-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 823 invoked by alias); 14 Jun 2017 20:36:02 -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: 41292
Received: (qmail 23590 invoked from network); 14 Jun 2017 20:36:02 -0000
X-Qmail-Scanner-Diagnostics: from mail-qt0-f175.google.com by f.primenet.com.au (envelope-from <schaefer@brasslantern.com>, uid 7791) with qmail-scanner-2.11 
 (clamdscan: 0.99.2/21882. spamassassin: 3.4.1.  
 Clear:RC:0(209.85.216.175):SA:0(-0.0/5.0):. 
 Processed in 7.058754 secs); 14 Jun 2017 20:36:02 -0000
X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-0.0 required=5.0 tests=RCVD_IN_DNSWL_NONE,
	RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_PASS,T_DKIM_INVALID
	autolearn=unavailable autolearn_force=no version=3.4.1
X-Envelope-From: schaefer@brasslantern.com
X-Qmail-Scanner-Mime-Attachments: |
X-Qmail-Scanner-Zip-Files: |
Received-SPF: pass (ns1.primenet.com.au: SPF record at _netblocks.google.com designates 209.85.216.175 as permitted sender)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=brasslantern-com.20150623.gappssmtp.com; s=20150623;
        h=mime-version:in-reply-to:references:from:date:message-id:subject:to
         :cc;
        bh=CbyI0L3CBNbzBM00o1a9nooct0Xyfp272zDb9Unwq14=;
        b=cg0H7IzCTWE2WKclmVRCwXQcBbohb8MVrstYtzl6cMIcNiDSjrNcoYp1RvuActKLs/
         ykOXtx2D09rHs9967LfhgNVJYq8+Kd7gIlI19Uja9pHJE4PXqlt4sL9vXR7BcQcuawcY
         iKUavvad8ZpXgOi3CmFuUHz/Cs67zEzmB52wQsgabRTLfY/A+TRFXBEYq+a0P3vvQp00
         BFVp08Etplm8Pw3ZXVz3HEs9STHHat7YJhqsDAG33HcAWI+VprH3rpTdN/N1bJqf+f7v
         hpF5913EuJngyeM4lug8/VfttQ5xn9rkIVUwNjvHFdJf8zKPb5nKx66t60TS/HfKNYgH
         rHNQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20161025;
        h=x-gm-message-state:mime-version:in-reply-to:references:from:date
         :message-id:subject:to:cc;
        bh=CbyI0L3CBNbzBM00o1a9nooct0Xyfp272zDb9Unwq14=;
        b=qMSzhVx8ARtds3XISF13DSARyGE0oCoep1RcaSrnA9VDd4F4NXknUsRDCPiCZp8Jn1
         JTZB2nZ0cIPfA02u+83xdCDQHO/9BBFoS1h2nJQKkrCWrOMZE3l1OplzKxJqcF7du+ST
         xSXlldmZC1RIZJGRQmDVehYbgO4VC5hENEsCxtPgpNPQy2wQHBY/lz06vtF1XHcma+y2
         RWzXL8LBIBnl4EwDSwylw1p9rFIm9tyM6OAbFShdqYBnKjMEI6y1Y3ExGiR3Dj5qKTtN
         4xjP4KlvDq62J7fy1pE37uaEXEnvnqGGPPO5FAx1NlgbGN7geoKf7jaVHPoT1B4iz77X
         VCuQ==
X-Gm-Message-State: AKS2vOyY93sxJ1Exze992HKGL6kp9m/giZlsdGHujkYXaLc24ZZt0Wz/
	hyWlmaswwr5hBXZxpaiZ3e2ygp68Hpc9
X-Received: by 10.55.158.208 with SMTP id h199mr2314311qke.254.1497472547565;
 Wed, 14 Jun 2017 13:35:47 -0700 (PDT)
MIME-Version: 1.0
In-Reply-To: <etPan.59416db1.2eb141f2.8fd5@MacMini.local>
References: <etPan.59416db1.2eb141f2.8fd5@MacMini.local>
From: Bart Schaefer <schaefer@brasslantern.com>
Date: Wed, 14 Jun 2017 13:35:47 -0700
Message-ID: <CAH+w=7aGkJpWqM=2QEz_SgFokwNSxfok7WA2v6Uv=Fw6P3Skcg@mail.gmail.com>
Subject: Re: 5.3.1-dev-0 difference in array=( "${(PA@)var_name}" )
To: Sebastian Gniazdowski <psprint@zdharma.org>
Cc: "zsh-workers@zsh.org" <zsh-workers@zsh.org>
Content-Type: text/plain; charset="UTF-8"

On Wed, Jun 14, 2017 at 10:09 AM, Sebastian Gniazdowski
<psprint@zdharma.org> wrote:
> Hello,
> % zsh-5.3.1
> % var_name="abcdef"; array=( "${(PA@)var_name}" ); echo ${#array}
> 1

The (A) flag doesn't mean anything in this context in 5.3.1, that was
added about 2 months after the 5.3.1 release.

So in the above example ${(P)var_name} returns a scalar and the (@)
flag is also meaningless.  In this next example --

> % zsh-5.3.1-dev-0
> % var_name="abcdef"; array=( "${(PA@)var_name}" ); echo ${#array}
> 0

-- the (A) flag does apply , so ${(PA)var_name} is an empty array
rather than an unset scalar, and (@) causes the double-quotes to
resolve to nothing rather than to a quoted empty string, just as
"${emptyarray[@]}" would do.