const KNOWN_ARITY: &[(&[u8], usize)];Expand description
Fixed arity for MD2 EEL2 builtins whose argument count is known up
front. Used by rewrite_arity_mismatched_semis to decide when a
mixed , + ; argument list can be unambiguously normalised.
loop / exec2 / exec3 / while are intentionally absent — their
bodies are ;-chains, not fixed-arity arg lists.