removing null elements from an array

[Poor Yorick]

To get rid of null elements in an array, I currently do something like this: 

    bash-3.2$ var1=("with spaces" "more spaces" '' "the end")
    bash-3.2$ for v in "address@hidden"; do if test "$v"; then var2+=("$v"); 
fi; done
    bash-3.2$ echo address@hidden
    3
    bash-3.2$ printf '%s\n' "address@hidden"
    with spaces
    more spaces
    the end

Is there any other more concise way?  It would be nice to avoid the second
variable by doing something like this:

    bash-3.2$ var1=("address@hidden:-}")

Is it a feasible syntax for future releases?

-- 
Yorick