don't try to "estimate" a number of words that a plugin parser can produce

    {

      uint ft_max_word_len_for_sort=FT_MAX_WORD_LEN_FOR_SORT*

                                    sort_param.keyinfo->seg->charset->mbmaxlen;

      sort_param.key_length+=ft_max_word_len_for_sort-HA_FT_MAXBYTELEN;

      /*

        fulltext indexes may have much more entries than the

        number of rows in the table. We estimate the number here.

        Note, built-in parser is always nr. 0 - see ftparser_call_initializer()

      */

      if (sort_param.keyinfo->ftparser_nr == 0)

      {

        /*

          for built-in parser the number of generated index entries

          cannot be larger than the size of the data file divided

          by the minimal word's length

        */

        sort_info.max_records=

          (ha_rows) (sort_info.filelength/ft_min_word_len+1);

      }

      else

      {

        /*

          for external plugin parser we cannot tell anything at all :(

          so, we'll use all the sort memory and start from ~10 buffpeks.

          (see _create_index_by_sort)

        */

        sort_info.max_records=

          10*param->sort_buffer_length/sort_param.key_length;

      }

      sort_param.key_read=sort_ft_key_read;

      sort_param.key_write=sort_ft_key_write;

      sort_param.key_length+=ft_max_word_len_for_sort-HA_FT_MAXBYTELEN;

    }

    else

    {