`declare -a NAME` followed by `declare -p NAME`

[Ivan Shapovalov]

If an empty array is declared using `declare -a NAME` and then immediately
`declare -p NAME` is invoked, it says there is no such variable. However,
if one assigns some values to the array, `declare -p` works then as expected.

That is: `declare -p NAME` does not work on an array which has been declared
but not yet assigned anything.

However, the array can be found in output of `declare -p` without NAME given.

Testcase:
----
$ declare -a __test

$ declare -p | grep __test
declare -- _="__test"
declare -a __test='()'

$ declare -p __test
bash: declare: __test: not found

$ __test=("")

$ declare -p __test
declare -a __test='([0]="")'
----

Bash version: 4.3.30(1)-release
Distro: Arch Linux

Thanks,
-- 
Ivan Shapovalov / intelfx /

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