Attribute Macro macro_v 

#[macro_v]

Attribute that make the visibility of the macro_rules! macro the same as other items.

So the usage of #[macro-v] is private by default, as is the visibility of other items. For example:

// Use before declaration
private_macro!();

#[macro_v]
macro_rules! private_macro {
    () => {};
}

mod inner {
    // You must use the prefix `super::` or `crate::` to call the macro,
    // because it is not in the current scope
    super::private_macro!();
    crate::private_macro!();
}

You can also use #[macro_v(pub(crate))] to make the macro visible in the current crate. For example:

inner::example_macro!();

// No `#[macro_use]` needed!
mod inner {
    use macro_v::macro_v;

    #[macro_v(pub(crate))]
    macro_rules! example_macro {
        () => {};
    }
}

Defining public macros also no longer requires #[macro_export], but instead uses #[macro-v(pub)]. For example:

pub mod inner {
    use macro_v::macro_v;

    #[macro_v(pub)]
    macro_rules! public_macro {
        () => {};
    }
}

crate::inner::public_macro!();