func IsNumber(r rune) bool {
	if uint32(r) <= MaxLatin1 {
		return properties[uint8(r)]&pN != 0
	}
	return isExcludingLatin(Number, r)
}

// IsPunct reports whether the rune is a Unicode punctuation character
// (category [P]).
func IsPunct(r rune) bool {
	if uint32(r) <= MaxLatin1 {
		return properties[uint8(r)]&pP != 0
	}
	return Is(Punct, r)
}

	}, true
}

// isLinkAdjacentRune reports whether r can be adjacent to a symbol link.
// The logic is the same as the go/doc/comment package.
func isLinkAdjacentRune(r rune) bool {
	return unicode.IsPunct(r) || r == ' ' || r == '\t' || r == '\n'
}

// splitRef splits s into a package and possibly a symbol.
// Examples:
//
//	splitRef("math.Max") => ("math", "Max", true)