What happened?

The following macro gives an erroneous source.rust meta.macro.rust invalid.illegal.rust scope:

macro_rules! test {
    ($($name:ident),+$(,)?) => {
        pub struct Foo {
            $(
                pub $name : Option<String>
            ),+
        }

        pub async fn thing() -> () {}
    }
}

From a cursory view in the repository and from testing it seems this is applied because of this rule

Adding the ; after the struct definition does make the scope go away but ironically it leads to invalid code since you can't have ; after a struct definition:

error: expected item, found `;`
  --> src/main.rs:15:2
   |
15 | };
   |  ^ help: remove this semicolon
   |
   = help: braced struct declarations are not followed by a semicolon