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Re: Zero-length indexed arrays
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From: |
Lawrence Velázquez |
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Subject: |
Re: Zero-length indexed arrays |
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Date: |
Thu, 16 Dec 2021 23:56:08 -0500 |
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User-agent: |
Cyrus-JMAP/3.5.0-alpha0-4524-g5e5d2efdba-fm-20211214.001-g5e5d2efd |
On Thu, Dec 16, 2021, at 11:45 PM, Lawrence Velázquez wrote:
> Did you mean to say that ${#FOO[*]} causes an error? Because
> ${FOO[*]} does not, à la $*:
>
> [...]
>
> Like ${FOO[*]}, ${FOO[@]} and $@ are exempt from ''set -u''.
Perhaps you're using an old bash, like the one shipped with macOS?
% /bin/bash --version | head -n 1
GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin18)
% /bin/bash -uc ': "${FOO[*]}"'
/bin/bash: FOO[*]: unbound variable
% /bin/bash -uc ': "${FOO[@]}"'
/bin/bash: FOO[@]: unbound variable
If so, there's not much anyone here can do about it.
--
vq