From: Bart Schaefer <schaefer@brasslantern.com>
To: zsh-users@zsh.org
Subject: Re: shwordsplit and ksharrays will change rcexpandparam's behavior on empty array
Date: Thu, 13 Sep 2012 08:05:21 -0700 [thread overview]
Message-ID: <120913080521.ZM21720@torch.brasslantern.com> (raw)
In-Reply-To: <20120913130550.GA23186@localhost.localdomain>
On Sep 13, 9:05pm, Han Pingtian wrote:
}
} % zsh -c 'xx=(); print foo${^xx}bar'
} <empty>
} % zsh -c 'setopt shwordsplit;xx=(); print foo${^xx}bar'
} foobar
Hmm ... "shwordsplit" is of course code for doing several expansion-
related things in a Bourne-shell-like way, mostly but not exclusively
splitting on spaces ... it's consistently applied:
% xx=(); print foo${=^xx}bar
foobar
%
You can see that this has to do with the difference between $* and $@ if
you make it explicit:
% xx=(); print foo${=^xx[@]}bar
% xx=(); print foo${=^xx[*]}bar
foobar
%
} % zsh -c 'setopt ksharrays;xx=(); print foo${^xx}bar'
} foobar
This one, however, is definitely correct. With ksharrays, ${xx} means
the same as ${xx[0]}, not ${xx[*]}.
prev parent reply other threads:[~2012-09-13 15:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 13:05 Han Pingtian
2012-09-13 15:05 ` Bart Schaefer [this message]
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