rustfmt removes comments inside parentheses in patterns (PatKind::Paren).

[yuvraj-wale]

• Issue: rustfmt unexpectedly removes comments inside parentheses in patterns (PatKind::Paren).

• Example:

  • Input:

    fn main() {
        let (/* */() | ()/* */) = ();
    }

  • Output (after formatting):

    fn main() {
        let (() | ()) = ();
    }

  • Expected Outcome:

    fn main() {
        let (/* */() | ()/* */) = ();
    }

• Related Issues:

  • This issue, related to PatKind::Paren, partially overlaps with rustfmt deletes comments in "or" patterns #6044, which focuses on PatKind::Or.
  • Similar to Recover comments between attrs and generic param #5780, but the changes here pertain to PatKind::Paren instead of TyKind::Paren.

[yuvraj-wale]

@rustbot claim