BroadcastStyle of a SubArray

Internals & Design
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1

The broadcast style of SubArrray (i.e. as obtained using view) is a DefaultArrayStyle:

julia> Base.BroadcastStyle(typeof(view(rand(10,10),2:3,3:4)))
Base.Broadcast.DefaultArrayStyle{2}()

yet it would be extremely useful, if it would automatically refer to the unwrapped array type such as returned by the unwrap_type function in the Adapt.jl package. In other words, it should be:

function Base.Broadcast.BroadcastStyle(W::Type{<:SubArray}) 
    return Base.Broadcast.BroadcastStyle(Adapt.unwrap_type(W))
end

This would help tremendously with writing generic Adapt code.
Should this be part of Base Julia?

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