Mocking does not support kwarg defaults referencing args

[iamed2]

julia> using Mocking

julia> function f(x; y=x)
           (x, x, y, y)
       end
f (generic function with 1 method)

julia> p = @patch function f(x; y=x)
           (x, x, y, y)
       end
ERROR: UndefVarError: x not defined