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Date: Thu, 13 Sep 2012 21:05:50 +0800
From: Han Pingtian <hanpt@linux.vnet.ibm.com>
To: zsh-users@zsh.org
Subject: shwordsplit and ksharrays will change rcexpandparam's behavior on
 empty array
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Hello,

I noticed that 'shwordsplit' will change the behavior of 'rcexpandparam'
on empty array:

% zsh -c 'xx=(); print foo${^xx}bar'
<empty>
% zsh -c 'setopt shwordsplit;xx=(); print foo${^xx}bar'
foobar

Not sure if this is a bug. 

And looks like 'ksharrays' can do this, too:

% zsh -c 'setopt ksharrays;xx=(); print foo${^xx}bar'
foobar

Maybe ksharrays lets the $xx evluated as a scalar, a null string, so
foo${^xx}bar is return as foobar?

Thanks.