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Groups > gnu.bash.bug > #15932
| From | Chet Ramey <chet.ramey@case.edu> |
|---|---|
| Newsgroups | gnu.bash.bug |
| Subject | Re: ${!variable@operator} does not work for variables without values; inconsistencies between present and absent [@] for @A and @a |
| Date | 2020-02-20 14:13 -0500 |
| Message-ID | <mailman.1281.1582226013.2412.bug-bash@gnu.org> (permalink) |
| References | <CALaCa4xQYy3pT31++yU-QcXvQg-EJctg8etQX5e+c4fcw=pEhA@mail.gmail.com> <d07a0ad0-bc3e-c484-97f0-6e82aef5fedd@case.edu> |
On 2/19/20 4:03 PM, Arfrever Frehtes Taifersar Arahesis wrote:
> ${variable@A} does not work for scalar variables without values, but
> interestingly ${variable[@]@A} works for them.
What does this mean? If you have, for instance,
declare -lr VAR1
echo ${VAR1@A}
echo ${VAR1[@]@A}
you get two empty lines.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/
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Re: ${!variable@operator} does not work for variables without values; inconsistencies between present and absent [@] for @A and @a Chet Ramey <chet.ramey@case.edu> - 2020-02-20 14:13 -0500
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