b = bytes.TrimSuffix(b, []byte("gopher"))
	b = append(b, bytes.TrimSuffix([]byte("world!"), []byte("x!"))...)
	os.Stdout.Write(b)
	// Output: Hello, world!
}

func ExampleTrimRight() {
	fmt.Print(string(bytes.TrimRight([]byte("453gopher8257"), "0123456789")))
	// Output:
	// 453gopher
}

func ExampleTrimRightFunc() {