dupe := x.commonSelectors[sk]
	if dupe != nil {
		if a == nil {
			return dupe
		}
		a.copyOf(dupe)
		return a
	}

	var argStore [10]*Value
	args := argStore[:0]

	addArg := func(a0 *Value) {
		if a0 == nil {
			as := "<nil>"
			if a != nil {
				as = a.LongString()
			}