extension UITextView {
    var currentWord: String? {
        let regex = try! NSRegularExpression(pattern: "\\S+$")
        let textRange = NSRange(location: 0, length: selectedRange.location)
        if let range = regex.firstMatch(in: text, range: textRange)?.range {
            return String(text[Range(range, in: text)!])
        }
        return nil
    }
}