Macro combu::version

macro_rules! version {
    () => { ... };
    (None) => { ... };
    (...) => { ... };
    (from_crate) => { ... };
    ($vm:literal.$vp:literal) => { ... };
    ($version:literal) => { ... };
    ($major:literal$(,)?$minor:literal$(,)?$patch:literal $($($tail:tt)+)?) => { ... };
    (&$from:expr) => { ... };
    (->$raw:expr) => { ... };
}

Macro for specification of command version