kakoune/test/indent/rust/on-open-paren/in

    fn foo<T>(x: T)
    where
        T: Debug
        %( )

    fn foo<T>(x: T) where T: Debug %( )

    impl<T> X for T
    where
        T: Debug
        %( )

    impl<T> X for T where T: Debug %( )

    struct X<T>
    where
        T: Debug
        %( )

    struct X<T> where T: Debug %( )

    enum X<T>
    where
        T: Debug
        %( )

    enum X<T> where T: Debug %( )

    union X<T>
    where
        T: Debug
        %( )

    union X<T> where T: Debug %( )

    if foo()
        && bar()
        %( )

    for x in group
        .iter()
        .sorted_by(|a, b| Ord::cmp(&a.0, &b.0))
        %( )