Space after `,`?

[oxinabox]

I can't actually find the bit that says to do: foo(a, b) not foo(a,b)

Nor for Union{A, B} not Union{A,B}

Maybe i am just missing it.

[nickrobinson251]

maybe it's not there?!? it's sometimes surprising what is and what isn't wirtten down 😂

Would be good to add "write foo(a, b) not foo(a,b)"?

re the Union one, that's definitely not written down (and i'm not sure if/what we want to write down), but it was discussed recently in https://github.com/invenia/BlueStyle/issues/70