# File lib/myrurema.rb, line 97
  def search_num(query, num, ver)
    should_have_db(ver)

    result = `#{bitclust_path/'bin/refe'} #{query} -d #{db_path(ver)}`
    word = result.split[num-1]
    if word
      word.gsub!(/\.#/, ".")    # avoid multi-hit for a module function
      puts "searching #{word}"
      search(word, ver)
    else
      error "less than #{num} entries found"
    end
  end