Autocompletion in string interpolation

When using string interpoloation, Xcode doesn't autocomplete variables unless the interpolation parenthesis and string are fully closed.

let myInt = 5
print("My int is \(/*no auto complete here*/)

print("My int is \()")  // then I can go back into \() and autocomplete works

This is somewhat frustrating and seemingly would be a very useful feature to have. I was wondering if there's an option I'm missing to enable that.