macro_rules! choice { ($name:expr,$description:expr,$action:expr,$matches_if:expr) => { ... }; ($name:expr,$description:expr,$action:expr) => { ... }; ($name:expr,$action:expr) => { ... }; }
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§choice! macro
a macro to create choice easily e.g. choice!(“name”,“description”,|args| println!(“hello”),|args| args.len() == 1) or choice!(“name”,“description”,|args| println!(“hello”)) if you dont need to match the args or choice!(“name”,|args| println!(“hello”)) if you dont have a description