Attribute Macro macro_rules_attribute::macro_rules_attribute

#[macro_rules_attribute]

Legacy name for what is currently named #[apply]

Despite being a slightly clearer name (than #[apply] is) w.r.t. what it does, #[macro_rules_attribute] had the big drawback of being a mouthful.

Hence the #[apply] alias being born, and now even superseding #[macro_rules_attribute] altogether as the author-deemed “idiomatic” name to favor.