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Kir Kolyshkin
5d1ef78cad
One particularly bad one is ${codes[@]} which is fine in bash 4.4+,
but gives "codes[@]: unbound variable" with older bash versions,
such as with bash 4.2 used on CentOS 6. It's good that this is the only
array in the script that can potentially be empty.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>