code: func (a *Args) equal(r *Args) bool {
  	if a.Elided != r.Elided || len(a.Values) != len(r.Values) {
  		return false
  	}
  	for i, l := range a.Values {
  		if l != r.Values[i] {
  			return false
  		}
  	}
  	return true
  }
docs: // equal returns true only if both arguments are exactly equal.