///
/// ### Known problems
/// Will add unnecessary pair of parentheses when the
- /// expression is not wrapped in a pair but starts with a opening parenthesis
+ /// expression is not wrapped in a pair but starts with an opening parenthesis
/// and ends with a closing one.
/// I.e., `let _ = (f()+1)..(f()+1)` results in `let _ = ((f()+1)..=f())`.
///