return ""
	}

	var parentheticals []string
	if underName := typeName(typ.Underlying()); underName != "" && underName != name {
		parentheticals = append(parentheticals, underName)
	}

	if typ != inType && inName != "" && inName != name {
		parentheticals = append(parentheticals, "in "+inName)
	}

	if len(parentheticals) > 0 {
		name += " (" + strings.Join(parentheticals, ", ") + ")"
	}

	return name
}

			return nil, errors.New("mail: misformatted parenthetical comment")
		}
		return group, nil
	}

	for {
		p.skipSpace()
		// embedded groups not allowed.
		addrs, err := p.parseAddress(false)
		if err != nil {
			return nil, err
		}
		group = append(group, addrs...)

		if !p.skipCFWS() {
			return nil, errors.New("mail: misformatted parenthetical comment")
		}
		if p.consume(';') {

		16: {"john.doe@", "missing '@' or angle-addr"},
		17: {"John ******@****.***", "no angle-addr"},
		18: {" group: ******@****.***; (asd", "misformatted parenthetical comment"},
		19: {" group: ; (asd", "misformatted parenthetical comment"},
		20: {`(John) Doe <******@****.***e>`, "missing word in phrase:"},
		21: {"<jdoe@[" + string([]byte{0xed, 0xa0, 0x80}) + "192.168.0.1]>", "invalid utf-8 in domain-literal"},

// The usage message will appear on a separate line for anything but
// a bool flag with a one-byte name. For bool flags, the type is
// omitted and if the flag name is one byte the usage message appears
// on the same line. The parenthetical default is omitted if the
// default is the zero value for the type. The listed type, here int,
// can be changed by placing a back-quoted name in the flag's usage