40 columns                              |
>>> Line comment before case keyword.
if (obj // comment
case true) {;}
<<<
if (obj // comment
    case true) {
  ;
}
>>> Line comment after case keyword.
if (obj case // comment
true) {;}
<<<
if (obj
    case // comment
        true) {
  ;
}
>>> Line comment after case clause.
if (obj case true // comment
) {;}
<<<
if (obj
    case true // comment
        ) {
  ;
}