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From: Bart Schaefer <schaefer@brasslantern.com>
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Date: Sat, 30 May 2015 15:28:31 -0700
In-Reply-To: <20150530204046.0ae57c98@ntlworld.com>
Comments: In reply to Peter Stephenson <p.w.stephenson@ntlworld.com>
        "Re: Arith parsing bug with minus after $#" (May 30,  8:40pm)
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To: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: Arith parsing bug with minus after $#
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On May 30,  8:40pm, Peter Stephenson wrote:
}
} What I'm not sure about is how to decide.  SH_WORD_SPLIT isn't the
} same thing, though there's an obvious mnemonic for why it might have
} this effect. We have the option of basing it on emulation alone, but
} that always strikes me as something of a counsel of despair.

POSIX_IDENTIFIERS, perhaps?