func IsMarkUnsafe(r rune) bool {
	return isUnsafe(mark, r)
}
IsMarkUnsafe is the unsafe version of IsMark.
package runes
import (
	"unicode"
	"unicode/utf8"
)
func IsControl(r rune) bool {
	return unicode.IsControl(r)
}
func IsDigit(r rune) bool {
	return is(digit, r)
}
func IsDigitUnsafe(r rune) bool {
	return isUnsafe(digit, r)
}
func IsGraphic(r rune) bool {
	return is(graphic, r)
}
func IsGraphicUnsafe(r rune) bool {
	return isUnsafe(graphic, r)
}
func IsLetter(r rune) bool {
	return is(letter, r)
}
func IsLetterUnsafe(r rune) bool {
	return isUnsafe(letter, r)
}
func IsLower(r rune) bool {
	return is(lower, r)
}
func IsLowerUnsafe(r rune) bool {
	return isUnsafe(lower, r)
}
func IsMark(r rune) bool {
	return is(mark, r)
}