Greater | // `{ 42 } > 3`
GreaterEqual | // `{ 42 } >= 3`
AssignOp(_) | // `{ 42 } +=`
- LAnd | // `{ 42 } &&foo`
As | // `{ 42 } as usize`
// Equal | // `{ 42 } == { 42 }` Accepting these here would regress incorrect
// NotEqual | // `{ 42 } != { 42 } struct literals parser recovery.