def pair.lo
import bend-net-json@0.3.0.0/json.bend as Jsonimport Base
164def pair.lo(+hi: U32, +rest: String, lo: Maybe<&2, Esc>) -> Esc:
165 match lo:
166 case None{}:
167 Esc{65533, rest}
168 case Some{Esc{+v, r}}:
169 Bool.pick(Esc, is_lo(v), Esc{(65536 + (hi - 55296 : U32) * 1024 + (v - 56320 : U32) : U32), r}, Esc{65533, rest})