On 12/17/10 4:48 AM, [email protected] wrote:
> Bash Version: 4.1
> Patch Level: 0
> Release Status: release
>
> Description:
> Referencing empty array with "set -u" active throws unbound variable error.
>
> Repeat-By:
> $ set -u
> $ declare -a array
> $ array=( )
> $ echo "${arr...@]}"
> bash: arr...@]: unbound variable
A variable isn't set until it's been assigned a value.
> For an empty "$@" this does not throw an "unbound" error, which seems to be
> an inconsistent behaviour to me.
Bash used to do this, but Posix declared that $@ and $* are exceptions
to the unset variable rule.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU [email protected] http://cnswww.cns.cwru.edu/~chet/
