(?:\((?P<scope>[[:alnum:]]+(?:-[[:alnum:]]+)*)\))?

            (?:\((?P<scope>[[:alnum:]]+(?:[-_/][[:alnum:]]+)*)\))?

    fn test_with_alnum_scope() {
        let msg = "feat(bar2): add a foo to new bar";

    fn test_with_complex_scope() {
        let msg = "feat(bar2/a_b-C4): add a foo to new bar";

                scope: Some("bar2".into()),

                scope: Some("bar2/a_b-C4".into()),