Empty multidimensional arrays have empty compact representation

[GunnarFarneback]

Empty matrices disappear when displayed as part of something else. Maybe not completely illogical but kind of confusing.

julia> [zeros(0, 0)]
1-element Array{Array{Float64,2},1}:
 

julia> type T
           a::Matrix{Float64}
           b::Matrix{Float64}
       end

julia> T(zeros(0, 0), zeros(0, 0))
T(,)

[nalimilan]

Sounds weird indeed. Reduced reproducer:

julia> showcompact(zeros(0))
Float64[]
julia> showcompact(zeros(0, 0))

julia> showcompact(zeros(0, 0, 0))

I guess we should print Array{Float64,2}(), Array{Float64,3}(), etc.