return splitSeq(s, sep, 0)
}

// SplitAfterSeq returns an iterator over subslices of s split after each instance of sep.
// The iterator yields the same subslices that would be returned by [SplitAfter](s, sep),
// but without constructing a new slice containing the subslices.
// It returns a single-use iterator.
func SplitAfterSeq(s, sep []byte) iter.Seq[[]byte] {
	return splitSeq(s, sep, len(sep))
}

			t.Errorf(`Split(%q, %q, %d) = %v; want %v`, tt.s, tt.sep, tt.n, result, tt.a)
			continue
		}

		if tt.n < 0 {
			b := sliceOfString(slices.Collect(SplitAfterSeq([]byte(tt.s), []byte(tt.sep))))
			if !slices.Equal(b, tt.a) {
				t.Errorf(`collect(SplitAfterSeq(%q, %q)) = %v; want %v`, tt.s, tt.sep, b, tt.a)
			}
		}

		if want := tt.a[len(tt.a)-1] + "z"; string(x) != want {