Interpolation & scope

[mcabbott]

As I was reminded here https://discourse.julialang.org/t/in-using/90056/5 this package tends to assume that the name TensorCast is in scope where the macro runs. It shouldn't.

[tpapp]

Thanks for opening an issue. An MWE is

using TensorCast: @cast
B = ones(3, 3)
@cast A[row][col] := B[row, col]

I think that wrapping each function form f(args...) in $(f(args...)) in the macro implementation should fix this, but didn't test.

In addition, it would be great to clarify that ⊗ is just a placeholder and does not need to be imported.