change in behavior starting with bash-4.3_p14 and $@ in [[...]]

[Mike Frysinger]

simple enough code:
foo=(0 0 0); [[ -z ${foo[@]#0} ]]; echo $?

with bash-4.3_p13 and older, this would show 0.  starting with bash-4.3_p14, 
this now shows 1.

i can't tell from the thread whether this was intentional:
https://lists.gnu.org/archive/html/help-bash/2014-04/msg00004.html
-mike

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