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From: Bart Schaefer <schaefer@brasslantern.com>
Message-Id: <151008122236.ZM4177@torch.brasslantern.com>
Date: Thu, 8 Oct 2015 12:22:36 -0700
In-Reply-To: <5616AB69.8080706@eastlink.ca>
Comments: In reply to Ray Andrews <rayandrews@eastlink.ca>
        "not an error?" (Oct  8, 10:44am)
References: <CAKc7PVCzoPWBkqYYxE85tndwWT9nY35QSMdg9WPv7A3ofVDuoA@mail.gmail.com> 
	<20151008102315.0136766a@pwslap01u.europe.root.pri> 
	<151008094643.ZM4110@torch.brasslantern.com> 
	<5616AB69.8080706@eastlink.ca>
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To: zsh-users@zsh.org
Subject: Re: not an error?
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On Oct 8, 10:44am, Ray Andrews wrote:
}
} print -rl "${(@k)aliases}}"
} 
} Shouldn't the parser complain about the extra '}'?

Why would it?  You've put it in double quotes, so this is the same
situation as

print -rl "}"

} certainly complains about too many opening '{', tho.

Consider

print -rl "{${(@k)aliases}}"
print -rl "${(@k)aliases}{}"
print -rl "${(@k)aliases}}{"

Given the quotes, the only reason too many open braces is a problem is
when you are inside the syntax of ${...} where braces are significant.
As soon as a matching close-brace is found, double-quote context is
active again and braces cease to have meaning.