pub trait Test { fn very_long_method_name<F>(self, f: F) -> MyVeryLongReturnType where F: FnMut(Self::Item) -> bool; fn exactly_100_chars1<F>(self, f: F) -> MyVeryLongReturnType where F: FnMut(Self::Item) -> bool; } fn very_long_function_name<F>(very_long_argument: F) -> MyVeryLongReturnType where F: FnMut(Self::Item) -> bool { } struct VeryLongTupleStructName<A, B, C, D, E>(LongLongTypename, LongLongTypename, i32, i32) where A: LongTrait; struct Exactly100CharsToSemicolon<A, B, C, D, E> (LongLongTypename, i32, i32) where A: LongTrait1234; struct AlwaysOnNextLine<LongLongTypename, LongTypename, A, B, C, D, E, F> where A: LongTrait { x: i32 }