# File lib/extlib/inflection.rb, line 253
      def pluralization_rules
        if defined?(@pluralization_regex) && @pluralization_regex
          return [@pluralization_regex, @pluralization_hash]
        end
        @pluralization_regex = Regexp.new("(" + @plural_rules.map {|s,p| s}.join("|") + ")$", "i")
        @pluralization_hash  = Hash[*@plural_rules.flatten]
        [@pluralization_regex, @pluralization_hash]
      end