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From: Bart Schaefer <schaefer@brasslantern.com>
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Date: Tue, 13 May 2014 08:03:07 -0700
In-reply-to: <20140513101032.5d2377f8@pwslap01u.europe.root.pri>
Comments: In reply to Peter Stephenson <p.stephenson@samsung.com>
 "Re: [PATCH] Re: Parser issues and and [[ $var ]]" (May 13, 10:10am)
References:
 <CAH_OBicpVKS-URnd-Gq=gj+qc6OhDCqf0mgDfVcda27mEEfUKg@mail.gmail.com>
	<140416102727.ZM19090@torch.brasslantern.com>
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	<534FE710.3020601@eastlink.ca>	<140417123722.ZM22179@torch.brasslantern.com>
	<20140423165024.1480528a@pws-pc.ntlworld.com>	<lj984r$6uo$1@ger.gmane.org>
	<CAHYJk3QOZTnicq+Nqg4BXNANa_c6_j5mhyQNK1f8YNtDhxixgA@mail.gmail.com>
	<slrnlll0kq.v0i.martin@lounge.imp.fu-berlin.de>
	<20140425172112.7bf50606@pwslap01u.europe.root.pri>
	<slrnlln1bj.a9l.martin@epidot.math.uni-rostock.de>
	<140426133019.ZM29630@torch.brasslantern.com>
	<140510140932.ZM32668@torch.brasslantern.com>
	<140510180144.ZM26488@torch.brasslantern.com>
	<20140511180148.3b614054@pws-pc.ntlworld.com>
	<140511111200.ZM20625@torch.brasslantern.com>
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	<20140513101032.5d2377f8@pwslap01u.europe.root.pri>
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To: zsh-workers@zsh.org
Subject: Re: [PATCH] Re: Parser issues and and [[ $var ]]
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On May 13, 10:10am, Peter Stephenson wrote:
} Subject: Re: [PATCH] Re: Parser issues and and [[ $var ]]
}
} > This problem already exists -- infix operators that aren't tokens like
} > && and || are already lower prececence than prefix operators.
} 
} While this sort of thing and the problems with modular conditions are a
} real headache for parsing, I don't think the actual practical problems
} are anything like as bad.

It's almost certainly not a problem for correct programs.  The case I'd
be worried about is a program that ksh would reject as syntactically bad
(and therefore never start running) where zsh would accept it and then
fail at run time (possibly creating side-effects).

However, having had this situation already for a rather long time, I am
not particularly worked up about it.