Match!
  $full  => 'private function convert_wa_date_strings(iv_beg string, iv_end string, iv_read_date date, iv_step char(6)) returns (date, date, char(1))'
  $pp    => 'private'
  $func  => 'function'
  $name  => 'convert_wa_date_strings'
  $par   => '(iv_beg string, iv_end string, iv_read_date date, iv_step char(6))'
  $args  => 'iv_beg string, iv_end string, iv_read_date date, iv_step char(6)'
  $ret   => '(date, date, char(1))'
  $rargs => 'date, date, char(1)'