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Date: Mon, 29 Apr 2013 03:00:02 +0100
From: Stephane Chazelas <stephane.chazelas@gmail.com>
To: Zsh Hackers' List <zsh-workers@zsh.org>
Subject: [bug] $((0.5?1+1:3))
Message-ID: <20130429020002.GA7626@chaz.gmail.com>
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User-Agent: Mutt/1.5.21 (2010-09-15)

Hello,

That's quite an odd one. For any value of x between -1 and 1
(-1, 1 and 0 excluded), $(( x ? <some-expression> : 42 )) where
<some-expression> is anything but a numeric constant, expands to
"0".

OK$ echo $((0.5?2:3))
2
NOK$ echo $((0.5?1+1:3))
0
OK$ echo $((1.1?2:3))
2
$ echo $ZSH_VERSION
5.0.2

(debian 7 amd64)

Work around is to write it $(( 0.5 != 0 ? 1+1 : 3 )) (since 0.5
!= 0 then has a value of 1 which falls outside that range I
suppose).

regards,
Stephane