rust/tests/rustdoc/macro-generated-macro.macro_linebreak_pre.html

macro_rules! linebreak {
    (
        <= 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
        26 27 28 =>
    ) => { ... };
}