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From: Bart Schaefer <schaefer@brasslantern.com>
Message-Id: <150514105656.ZM30806@torch.brasslantern.com>
Date: Thu, 14 May 2015 10:56:56 -0700
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To: zsh-workers@zsh.org
Subject: Sigh, another math-parsing issue
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Ksh:

$ float X=27.9
$ print $(( 1 + $(( X )) ))
28.9

Zsh 5.0.7-dev-2:

torch% print $(( 1 + $(( X )) ))
zsh: failed to find end of math substitution

-- 
Barton E. Schaefer