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        Thu, 15 Sep 2016 17:36:27 -0700 (PDT)
From: Bart Schaefer <schaefer@brasslantern.com>
Message-Id: <160915173642.ZM3838@torch.brasslantern.com>
Date: Thu, 15 Sep 2016 17:36:42 -0700
In-Reply-To: <20160915105544.GA27914@cventin.lip.ens-lyon.fr>
Comments: In reply to Vincent Lefevre <vincent@vinc17.net>
        "Re: PATCH: [[ -v varname ]]" (Sep 15, 12:55pm)
References: <20160905212754.24998-1-tgyurci@gmail.com> 
	<20160908093516.4fc2dd1e@pwslap01u.europe.root.pri> 
	<20160908121628.78977edd@pwslap01u.europe.root.pri> 
	<20160908143128.GA14933@chaz.gmail.com> 
	<20160909085231.GA9717@chaz.gmail.com> 
	<90414.1473890510@hydra.kiddle.eu> 
	<20160915105544.GA27914@cventin.lip.ens-lyon.fr>
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To: zsh-workers@zsh.org
Subject: Re: PATCH: [[ -v varname ]]
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On Sep 15, 12:55pm, Vincent Lefevre wrote:
}
} Shouldn't there be 3 states?
} * not declared / not set
} * declared but not set
} * set

There are, but the test in question only distinguishes set/not, there
traditionally has not been a test for whether declared.

The issue at hand (well, one of them) is that zsh treats

    declare var
as 
    declare var=

so you get different results from

    declare var
    [[ -v var ]]

in different shells.