tests/source/issue_4584.rs

// rustfmt-indent_style: Visual

#[derive(Debug,)]
pub enum Case {
    Upper,
    Lower
}

#[derive(Debug, Clone, PartialEq, Eq,)]
pub enum Case {
    Upper,
    Lower
}

// NB - This formatting looks potentially off the desired state, but is
// consistent with current behavior. Included here to provide a line wrapped
// derive case with the changes applied to resolve issue #4584
#[derive(Add, Sub, Mul, Div, Clone, Copy, Eq, PartialEq, Ord, PartialOrd, Debug, Hash, Serialize, Mul,)]
struct Foo {}