t / t4018 / golang-complex-functionon commit built-in rebase: demonstrate that ORIG_HEAD is not set correctly (c2d9629)
   1type Test struct {
   2        a Type
   3}
   4
   5func (t *Test) RIGHT(a Type) (Type, error) {
   6        t.a = a
   7        return ChangeMe, nil
   8}