From: Bart Schaefer <schaefer@brasslantern.com>
To: Zsh Users <zsh-users@zsh.org>
Subject: Re: brace expansion in array subscript
Date: Sun, 27 Jul 2014 17:39:04 -0700 [thread overview]
Message-ID: <140727173904.ZM18201@torch.brasslantern.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1407271325560.9969@MyComp.rgm-web.net>
On Jul 27, 2:57pm, Rory Mulvaney wrote:
}
} echo ${arr[{2,5}]}
}
} Why doesn't that get expanded into "echo ${arr[2]} ${arr[5]}"?
Array subscripts are already a comma-separated pair of arithmetic
expressions (or a quoted string value for associative arrays), and
curly braces already have their own special meaning in parameter
expansion expressions. The syntax for brace expansion doesn't fit
well here.
} It seems there would be lots of convenient uses of this feature.
If you really need it, you can get it this way:
echo ${(e):-\${arr[{2,5}]}}
prev parent reply other threads:[~2014-07-28 0:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-27 19:57 Rory Mulvaney
2014-07-28 0:39 ` Bart Schaefer [this message]
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