docs: public static int getEnCharType( int u )
      {
          //if ( u > 65280 ) u -= 65248;            //make full-with half-width
          if ( u > 126 )                return EN_UNKNOW;
          if ( u == 32 )              return EN_WHITESPACE;
          if ( u >= 48 && u <= 57 )    return EN_NUMERIC;
          if ( u >= 65 && u <= 90 )    return EN_LETTER;
          if ( u >= 97 && u <= 122 )    return EN_LETTER;
          return EN_PUNCTUATION;
      }