pluralization_rules (Extlib::Inflection)

    # File lib/extlib/inflection.rb, line 245
          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