fn main() {
    let z = match x {
        "pat1" => 1,
        ( ref  x, ref  mut  y /*comment*/) => 2,
    };

    if let <  T as  Trait   > :: CONST = ident {
        do_smth();
    }

    let Some ( ref   xyz  /*   comment!   */) = opt;

    if let  None  =   opt2 { panic!("oh noes"); }
}

impl<'a,'b> ResolveGeneratedContentFragmentMutator<'a,'b> {
    fn mutate_fragment(&mut self, fragment: &mut Fragment) {
        match **info {
            GeneratedContentInfo::ContentItem(
                ContentItem::Counter(
                    ref counter_name,
                    counter_style
                )
            ) => {}}}
}