scanner.Split(bufio.ScanWords)
	// Count the words.
	count := 0
	for scanner.Scan() {
		count++
	}
	if err := scanner.Err(); err != nil {
		fmt.Fprintln(os.Stderr, "reading input:", err)
	}
	fmt.Printf("%d\n", count)
	// Output: 15
}

// Use a Scanner with a custom split function (built by wrapping ScanWords) to validate
// 32-bit decimal input.

// Test that the word splitter returns the same data as strings.Fields.
func TestScanWords(t *testing.T) {
	for n, test := range wordScanTests {
		buf := strings.NewReader(test)
		s := NewScanner(buf)
		s.Split(ScanWords)
		words := strings.Fields(test)
		var wordCount int
		for wordCount = 0; wordCount < len(words); wordCount++ {
			if !s.Scan() {
				break
			}
			got := s.Text()
			if got != words[wordCount] {

		return true
	}
	return false
}

// ScanWords is a split function for a [Scanner] that returns each
// space-separated word of text, with surrounding spaces deleted. It will
// never return an empty string. The definition of space is set by
// unicode.IsSpace.
func ScanWords(data []byte, atEOF bool) (advance int, token []byte, err error) {
	// Skip leading spaces.
	start := 0