def host_field
import bend-kit-url@0.4.1.0/url.bend as Urlimport Base
433def host_field(a: Abs) -> String:
434 Abs{+scheme, +host, +port, target} = a
435 +field = host_field.wrap(host, has(host, 58))
436 Bool.pick(String, U32.is_eq(port, abs.port.dflt(default_port(scheme))), field, field ++ ":" ++ U32.show(port))