Macro cucumber_rust::t

macro_rules! t {
    (| mut $world:ident, $step:ident | $($input:tt)*) => { ... };
    (| $world:ident, $step:ident | $($input:tt)*) => { ... };
    (| mut $world:ident, $matches:ident, $step:ident | $($input:tt)*) => { ... };
    (| $world:ident, $matches:ident, $step:ident | $($input:tt)*) => { ... };
}