macro_rules! delegate_keyboard { ($(@<$( $lt:tt $( : $clt:tt $(+ $dlt:tt )* )? ),+>)? $ty: ty) => { ... }; ($(@<$( $lt:tt $( : $clt:tt $(+ $dlt:tt )* )? ),+>)? $ty: ty, keyboard: [$($udata:ty),* $(,)?]) => { ... }; }
Available on crate feature
xkbcommon
only.