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.

// Expects to see error messages on 'p' exponents
// for non-hexadecimal floats.

package main

import "fmt"

const (
	x1 = 1.1    // float
	x2 = 1e10   // float
	x3 = 0x1e10 // integer (e is a hex digit)
)

const x4 = 0x1p10 // valid hexadecimal float
const x5 = 1p10   // ERROR "'p' exponent requires hexadecimal mantissa|invalid prefix"
const x6 = 0P0    // ERROR "'P' exponent requires hexadecimal mantissa|invalid prefix"

			b, s = append(b, s[1:1+n]...), s[1+n:]
		}
	}
	return b
}

// isHex reports whether the given character is a hex digit.
func isHex(c byte) bool {
	return '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F'
}

// hexDecode decodes a short hex digit sequence: "10" -> 16.
func hexDecode(s []byte) rune {
	n := '\x00'
	for _, c := range s {
		n <<= 4
		switch {

     */
    @Test
    void testMng6572() {
        String a = "20190126.230843"; // resembles a SNAPSHOT
        String b = "1234567890.12345"; // 10 digit number
        String c = "123456789012345.1H.5-beta"; // 15 digit number
        String d = "12345678901234567890.1H.5-beta"; // 20 digit number

        checkVersionsOrder(a, b);
        checkVersionsOrder(b, c);
        checkVersionsOrder(a, c);
        checkVersionsOrder(c, d);

      throw new NumberFormatException();
    }
    int octet = 0;
    for (int i = start; i < end; i++) {
      octet *= 10;
      int digit = Character.digit(ipString.charAt(i), 10);
      if (digit < 0) {
        throw new NumberFormatException();
      }
      octet += digit;
    }
    if (octet > 255) {
      throw new NumberFormatException();
    }
    return (byte) octet;
  }

	}
	return ""
}

// hexDigit returns the value of the hexadecimal digit.
func hexDigit(d rune) (int, bool) {
	digit := int(d)
	switch digit {
	case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
		return digit - '0', true
	case 'a', 'b', 'c', 'd', 'e', 'f':
		return 10 + digit - 'a', true
	case 'A', 'B', 'C', 'D', 'E', 'F':
		return 10 + digit - 'A', true
	}
	return -1, false
}

	checkLinkOutput("0x", "usage")
	checkLinkOutput("0x0", "-B argument must have even number of digits")
	checkLinkOutput("0x00", "usage")
	checkLinkOutput("0xYZ", "-B argument contains invalid hex digit")
	checkLinkOutput("0x"+strings.Repeat("00", 32), "usage")
	checkLinkOutput("0x"+strings.Repeat("00", 33), "-B option too long (max 32 digits)")
}

func checkLinkOutput(buildid string, message string) {

//     \\d   matches any decimal digit
//     \\D   matches any character that's not a decimal digit
//     \\f   matches \f
//     \\n   matches \n
//     \\r   matches \r
//     \\s   matches any ASCII whitespace, including \n
//     \\S   matches any character that's not a whitespace
//     \\t   matches \t
//     \\v   matches \v
//     \\w   matches any letter, _, or decimal digit

    return Digit.INSTANCE;
  }

  /**
   * Determines whether a character is a BMP digit according to {@linkplain Character#isDigit(char)
   * Java's definition}. If you only care to match ASCII digits, you can use {@code inRange('0',
   * '9')}.
   *
   * @deprecated Many digits are supplementary characters; see the class documentation.
   * @since 19.0 (since 1.0 as constant {@code JAVA_DIGIT})
   */
  @Deprecated

	klog.Flush()
	// Strip varying header. Code location should be constant and something
	// that needs to be tested.
	output := buffer.String()
	output = regexp.MustCompile(`^.* ([^[:space:]]*.go:[[:digit:]]*)\] `).ReplaceAllString(output, `xxx $1] `)
	fmt.Print(output)

	// Output:
	// xxx runtime_stack_test.go:60] "test" err="fake error" logger="UnhandledError" request=42