Doesn't it ignore special characters like : , . ( ) etc.? I remember struggling to find function definitions because `f(` would be treated like `f` I've also

Doesn't it ignore special characters like : , . ( ) etc.? I remember struggling to find function definitions because `f(` would be treated like `f` I've also not found a way to filter out tests. I know tests are also code, but most of the time I am not interested in them.