trivial syntax issue

Ray Andrews <[email protected]>
Newsgroups gmane.comp.shells.zsh.devel
Message-ID <8750df95-c72a-45fe-a274-d0753242d3e1__13993.2363688544$1778101585$gmane$org@eastlink.ca> 
% a=(junk*(N)); [[ $a ]] && echo TRUE
TRUE

% a=(zzz*(N)); [[ $a ]] && echo TRUE

% [[ (zzz*(N)) ]] && echo TRUE
TRUE

... I'd expect the 3d line to work as a naive simplification but it 
returns true every time.  Can it be fixed?
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