#[derive(Logos)]
#[logos(extras = Vec<&'static str>)]
#[logos(error = &'static str)]
#[logos(skip "a")]
#[logos(skip("b", callback = |lex| lex.extras.push("inline_callback")))]
#[logos(skip("c", labelled_callback))]
#[logos(skip("d", labelled_skip_callback))]
#[logos(skip("e|f", labelled_result_callback))]
#[logos(skip("g|h", labelled_skip_result_callback))]
enum Token {}
