{"ast_node_type":"function","tokens":[{"end":85,"kind":"keyword","start":0,"text":"\"macro_rules!"}]}
        "macro_rules! try_ {() => {}} fn f1() -> Result<(), E> {bar(try_!(foo()));}",
        "try_!($a) ==>> $a?",
        expect![["macro_rules! try_ {() => {}} fn f1() -> Result<(), E> {bar(foo()?);}"]],