Highlight Injection

fn fixture(#[rust_analyzer::rust_fixture] ra_fixture: &str) {}

fn main() {
    fixture(r#"
@@- minicore: sized
trait Foo: Sized {
    fn foo() {
        println!("2 + 2 = {}", 4);
    }
}"#
    );
    fixture(r"
fn foo() {
    foo($0{
        92
    }$0)
}"
    );
}