}
        return result.toString();
    }

    private static boolean isCppIdentifierCharacterStart(char c) {
        return Character.isLetter(c) || c == '_';
    }

    private static boolean isCppIdentifierCharacterPart(char c) {
        return Character.isLetter(c) || Character.isDigit(c) || c == '_';
    }

	fmt.Printf("%t\n", unicode.IsNumber('Ⅷ'))
	fmt.Printf("%t\n", unicode.IsNumber('A'))
	// Output:
	// true
	// false
}

func ExampleIsLetter() {
	fmt.Printf("%t\n", unicode.IsLetter('A'))
	fmt.Printf("%t\n", unicode.IsLetter('7'))
	// Output:
	// true
	// false
}

func ExampleIsLower() {
	fmt.Printf("%t\n", unicode.IsLower('a'))
	fmt.Printf("%t\n", unicode.IsLower('A'))
	// Output:
	// true

// isBreak returns whether this rune should introduce a break.
func (c info) isBreak() bool {
	return c.cccVal() == cccBreak
}

// isLetter returns whether the rune is of break type ALetter, Hebrew_Letter,
// Numeric, ExtendNumLet, or Extend.
func (c info) isLetter() bool {
	ccc := c.cccVal()
	if ccc == cccZero {
		return !c.isCaseIgnorable()
	}
	return ccc != cccBreak

		return fmt.Errorf("invalid name %q, should end with a letter or digit", name)
	}
	return nil
}

func isLetter(c rune) bool {
	return ('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z')
}

func isDigit(c rune) bool {
	return '0' <= c && c <= '9'
}

func isAlphaNumeric(c rune) bool {
	return isLetter(c) || isDigit(c)

func IsControl(r rune) bool {
	if uint32(r) <= MaxLatin1 {
		return properties[uint8(r)]&pC != 0
	}
	// All control characters are < MaxLatin1.
	return false
}

// IsLetter reports whether the rune is a letter (category [L]).
func IsLetter(r rune) bool {
	if uint32(r) <= MaxLatin1 {
		return properties[uint8(r)]&(pLmask) != 0
	}
	return isExcludingLatin(Letter, r)
}

			return fmt.Errorf("duplicate analyzer: %s", a.Name)
		}
		color[a] = finished
	}

	return nil
}

func validIdent(name string) bool {
	for i, r := range name {
		if !(r == '_' || unicode.IsLetter(r) || i > 0 && unicode.IsDigit(r)) {
			return false
		}
	}
	return name != ""
}

type CycleInRequiresGraphError struct {
	AnalyzerNames map[string]bool
}

	}

	fmt.Println()
	s.Init(strings.NewReader(src))
	s.Filename = "percent"

	// treat leading '%' as part of an identifier
	s.IsIdentRune = func(ch rune, i int) bool {
		return ch == '%' && i == 0 || unicode.IsLetter(ch) || unicode.IsDigit(ch) && i > 0
	}

	for tok := s.Scan(); tok != scanner.EOF; tok = s.Scan() {
		fmt.Printf("%s: %s\n", s.Position, s.TokenText())
	}

	// Output:
	// default:1:1: %
	// default:1:2: var1

			want = true
		}
		if got != want {
			t.Errorf("%U incorrect: got %t; want %t", i, got, want)
		}
	}
}

func TestIsLetterLatin1(t *testing.T) {
	for i := rune(0); i <= MaxLatin1; i++ {
		got := IsLetter(i)
		want := Is(Letter, i)
		if got != want {
			t.Errorf("%U incorrect: got %t; want %t", i, got, want)
		}
	}
}

func TestIsUpperLatin1(t *testing.T) {
	for i := rune(0); i <= MaxLatin1; i++ {

		line: 1,
		file: file,
	}
}

// We want center dot (·) and division slash (∕) to work as identifier characters.
func isIdentRune(ch rune, i int) bool {
	if unicode.IsLetter(ch) {
		return true
	}
	switch ch {
	case '_': // Underscore; traditional.
		return true
	case '\u00B7': // Represents the period in runtime.exit. U+00B7 '·' middle dot
		return true

			return string(strconv.AppendInt(append([]byte(frame.File), ':'), int64(frame.Line), 10))
		}
	}

	return ""
}

func IsValidDBNameChar(c rune) bool {
	return !unicode.IsLetter(c) && !unicode.IsNumber(c) && c != '.' && c != '*' && c != '_' && c != '$' && c != '@'
}

// CheckTruth check string true or not
func CheckTruth(vals ...string) bool {
	for _, val := range vals {