return null;
    }
    int digit = AsciiDigits.digit(string.charAt(index++));
    if (digit < 0 || digit >= radix) {
      return null;
    }
    long accum = -digit;

    long cap = Long.MIN_VALUE / radix;

    while (index < string.length()) {
      digit = AsciiDigits.digit(string.charAt(index++));
      if (digit < 0 || digit >= radix || accum < cap) {
        return null;
      }

1F106         ; disallowed_STD3_mapped ; 0035 002C     # 5.2  DIGIT FIVE COMMA
1F107         ; disallowed_STD3_mapped ; 0036 002C     # 5.2  DIGIT SIX COMMA
1F108         ; disallowed_STD3_mapped ; 0037 002C     # 5.2  DIGIT SEVEN COMMA
1F109         ; disallowed_STD3_mapped ; 0038 002C     # 5.2  DIGIT EIGHT COMMA
1F10A         ; disallowed_STD3_mapped ; 0039 002C     # 5.2  DIGIT NINE COMMA

		u := upper.at(i)

		// Okay to round down (truncate) if lower has a different digit
		// or if lower is inclusive and is exactly the result of rounding
		// down (i.e., and we have reached the final digit of lower).
		okdown := l != m || inclusive && i+1 == len(lower.mant)

		// Okay to round up if upper has a different digit and either upper
		// is inclusive or upper is bigger than the result of rounding up.

	const mixed = "\b5Ὂg̀9! ℃ᾭG"
	for _, c := range mixed {
		fmt.Printf("For %q:\n", c)
		if unicode.IsControl(c) {
			fmt.Println("\tis control rune")
		}
		if unicode.IsDigit(c) {
			fmt.Println("\tis digit rune")
		}
		if unicode.IsGraphic(c) {
			fmt.Println("\tis graphic rune")
		}
		if unicode.IsLetter(c) {
			fmt.Println("\tis letter rune")
		}
		if unicode.IsLower(c) {
			fmt.Println("\tis lower case rune")

   *   <li>All other characters are converted into one or more bytes using UTF-8 encoding and each
   *       byte is then represented by the 3-character string "%XY", where "XY" is the two-digit,
   *       uppercase, hexadecimal representation of the byte value.
   * </ul>
   *
   * <p>This escaper is suitable for escaping parameter names and values even when <a

        Pattern kebabCasePattern = getKebabCasePatternForName(pattern);
        Pattern kebabCasePrefixPattern = Pattern.compile(kebabCasePattern.pattern() + "[\\p{javaLowerCase}\\p{Digit}-]*");

        Set<String> caseInsensitiveMatches = new TreeSet<>();
        Set<String> caseSensitiveCamelCaseMatches = new TreeSet<>();
        Set<String> caseInsensitiveCamelCaseMatches = new TreeSet<>();

   *   <li>All other characters are converted into one or more bytes using UTF-8 encoding and each
   *       byte is then represented by the 3-character string "%XY", where "XY" is the two-digit,
   *       uppercase, hexadecimal representation of the byte value.
   * </ul>
   *
   * <p>This escaper is suitable for escaping parameter names and values even when <a

	testScanSelectedMode(t, ScanComments, Comment)
}

func TestScanCustomIdent(t *testing.T) {
	const src = "faab12345 a12b123 a12 3b"
	s := new(Scanner).Init(strings.NewReader(src))
	// ident = ( 'a' | 'b' ) { digit } .
	// digit = '0' .. '3' .
	// with a maximum length of 4
	s.IsIdentRune = func(ch rune, i int) bool {
		return i == 0 && (ch == 'a' || ch == 'b') || 0 < i && i < 4 && '0' <= ch && ch <= '3'
	}

        Pattern kebabCasePattern = getKebabCasePatternForName(pattern);
        Pattern kebabCasePrefixPattern = Pattern.compile(kebabCasePattern.pattern() + "[\\p{javaLowerCase}\\p{Digit}-]*");

        Set<String> caseInsensitiveMatches = new TreeSet<>();
        Set<String> caseSensitiveCamelCaseMatches = new TreeSet<>();
        Set<String> caseInsensitiveCamelCaseMatches = new TreeSet<>();

constraints.LuhnCheck.message               = The check digit for ${value} is invalid, Luhn Modulo 10 checksum failed.
constraints.Mod10Check.message              = The check digit for ${value} is invalid, Modulo 10 checksum failed.
constraints.Mod11Check.message              = The check digit for ${value} is invalid, Modulo 11 checksum failed.
constraints.ModCheck.message                = The check digit for ${value} is invalid, ${modType} checksum failed.