# File lib/active_support/inflector.rb, line 259
    def parameterize(string, sep = '-')
      # replace accented chars with ther ascii equivalents
      parameterized_string = transliterate(string)
      # Turn unwanted chars into the seperator
      parameterized_string.gsub!(/[^a-z0-9\-_\+]+/i, sep)
      unless sep.blank?
        re_sep = Regexp.escape(sep)
        # No more than one of the separator in a row.
        parameterized_string.gsub!(/#{re_sep}{2,}/, sep)
        # Remove leading/trailing separator.
        parameterized_string.gsub!(/^#{re_sep}|#{re_sep}$/i, '')
      end
      parameterized_string.downcase
    end