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Re: nullglob make unset on array member fail ?
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From: |
Greg Wooledge |
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Subject: |
Re: nullglob make unset on array member fail ? |
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Date: |
Mon, 23 Jan 2017 10:00:45 -0500 |
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User-agent: |
Mutt/1.4.2.3i |
On Mon, Jan 23, 2017 at 03:04:40PM +0100, admn ombres wrote:
> $ x=(x); echo ${#x[@]}; shopt -s nullglob; unset x[0]; echo ${#x[@]}
You need to quote 'x[0]' to avoid having it globbed against files in
the current working directory, regardless of whether you're using
nullglob.
The presence of a file named x0 in $PWD would change the meaning of your
unset command from unset 'x[0]' to unset 'x0'.