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Date: Sun, 1 Jul 2012 19:15:26 +0100
From: Peter Stephenson <p.w.stephenson@ntlworld.com>
To: <zsh-workers@zsh.org>
Subject: Re: PATCH Re: let unset array element remove compatible with bash
Message-ID: <20120701191526.50e2cf7d@pws-pc.ntlworld.com>
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On Sun, 01 Jul 2012 09:53:54 -0700
Bart Schaefer <schaefer@brasslantern.com> wrote:
> So the patch below makes
> 
>     noglob unset foo[x]
> 
> work properly.  If x is an existing index (or valid slice), it is cut
> from the array as if by foo[x]=().

Do you mean that?  That's not how bash works, it doesn't cut the
element, just remove the value at that index (ignore the offset-zero
vs. offset-one difference, of course):

[pws@pws-pc tmp]$ foo=(one two three)
[pws@pws-pc tmp]$ echo ${foo[*]}
one two three
[pws@pws-pc tmp]$ echo ${foo[0]}
one
[pws@pws-pc tmp]$ echo ${foo[2]}
three
[pws@pws-pc tmp]$ unset 'foo[1]'
[pws@pws-pc tmp]$ echo ${foo[1]}

[pws@pws-pc tmp]$ echo ${foo[2]}
three

-- 
Peter Stephenson <p.w.stephenson@ntlworld.com>
Web page now at http://homepage.ntlworld.com/p.w.stephenson/