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
	// false
}

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

		return &simpleCaser{f: f, span: isLower}
	}
	return &lowerCaser{
		first:   f,
		midWord: finalSigma(f),
	}
}

func makeTitle(t language.Tag, o options) transform.SpanningTransformer {
	_, i, _ := matcher.Match(t)
	x := &titleInfos[i]
	lower := x.lower
	if o.noLower {
		lower = (*context).copy
	} else if !o.ignoreFinalSigma {
		lower = finalSigma(lower)
	}
	return &titleCaser{

		u := upper[i]
		if TurkishCase.ToLower(l) != l {
			t.Errorf("lower(U+%04X) is U+%04X not U+%04X", l, TurkishCase.ToLower(l), l)
		}
		if TurkishCase.ToUpper(u) != u {
			t.Errorf("upper(U+%04X) is U+%04X not U+%04X", u, TurkishCase.ToUpper(u), u)
		}
		if TurkishCase.ToUpper(l) != u {
			t.Errorf("upper(U+%04X) is U+%04X not U+%04X", l, TurkishCase.ToUpper(l), u)
		}
		if TurkishCase.ToLower(u) != l {

		return properties[uint8(r)]&pLmask == pLu
	}
	return isExcludingLatin(Upper, r)
}

// IsLower reports whether the rune is a lower case letter.
func IsLower(r rune) bool {
	// See comment in IsGraphic.
	if uint32(r) <= MaxLatin1 {
		return properties[uint8(r)]&pLmask == pLl
	}
	return isExcludingLatin(Lower, r)
}

// IsTitle reports whether the rune is a title case letter.
func IsTitle(r rune) bool {

            return false;
        }
        return upperBound == null || isLower(candidate, upperBoundVersion, upperInclusive);
    }

    /**
     * Tells if version1 is lower than version2.
     */
    private boolean isLower(Version version1, Version version2, boolean inclusive) {
        int result = comparator.compare(version1, version2);
        if (inclusive) {

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

func TestIsLowerLatin1(t *testing.T) {
	for i := rune(0); i <= MaxLatin1; i++ {
		got := IsLower(i)
		want := Is(Lower, i)
		if got != want {
			t.Errorf("%U incorrect: got %t; want %t", i, got, want)
		}
	}
}

func TestNumberLatin1(t *testing.T) {
	for i := rune(0); i <= MaxLatin1; i++ {
		got := IsNumber(i)

}

func isExampleSuffix(s string) bool {
	r, size := utf8.DecodeRuneInString(s)
	return size > 0 && unicode.IsLower(r)
}

func isTestSuffix(name string) bool {
	if len(name) == 0 {
		// "Test" is ok.
		return true
	}
	r, _ := utf8.DecodeRuneInString(name)
	return !unicode.IsLower(r)
}

func isTestParam(typ ast.Expr, wantType string) bool {
	ptr, ok := typ.(*ast.StarExpr)
	if !ok {

func Is (rangeTab <type 1>, r <type -21>) <type -15>;
func IsControl (r <type -21>) <type -15>;
func IsDigit (r <type -21>) <type -15>;
func IsGraphic (r <type -21>) <type -15>;
func IsLetter (r <type -21>) <type -15>;
func IsLower (r <type -21>) <type -15>;
func IsMark (r <type -21>) <type -15>;
func IsNumber (r <type -21>) <type -15>;
func IsOneOf (ranges <type 23 [] <type 24 *<type 2>>>, r <type -21>) <type -15>;
func IsPrint (r <type -21>) <type -15>;

	}
	return c.copy()
}

func isLower(c *context) bool {
	ct := c.caseType()
	if c.info&hasMappingMask == 0 || ct == cLower {
		return true
	}
	if c.info&exceptionBit == 0 {
		c.err = transform.ErrEndOfSpan
		return false
	}
	e := exceptions[c.info>>exceptionShift:]
	if nLower := (e[1] >> lengthBits) & lengthMask; nLower != noChange {
		c.err = transform.ErrEndOfSpan
		return false
	}
	return true

		}
	case reflect.Interface:
		e := v.Elem()
		set(v, f(e))
	}
	return val
}

func isWildcard(s string) bool {
	rune, size := utf8.DecodeRuneInString(s)
	return size == len(s) && unicode.IsLower(rune)
}

// match reports whether pattern matches val,
// recording wildcard submatches in m.
// If m == nil, match checks whether pattern == val.