normalize_options!

# File actionpack/lib/action_dispatch/routing/mapper.rb, line 68
          def normalize_options!
            path_without_format = @path.sub(/\(\.:format\)$/, '')

            if using_match_shorthand?(path_without_format, @options)
              to_shorthand    = @options[:to].blank?
              @options[:to] ||= path_without_format.gsub(/\(.*\)/, "")[1..-1].sub(%{/([^/]*)$}, '#\1')
            end

            @options.merge!(default_controller_and_action(to_shorthand))

            requirements.each do |name, requirement|
              # segment_keys.include?(k.to_s) || k == :controller
              next unless Regexp === requirement && !constraints[name]

              if requirement.source =~ ANCHOR_CHARACTERS_REGEX
                raise ArgumentError, "Regexp anchor characters are not allowed in routing requirements: #{requirement.inspect}"
              end
              if requirement.multiline?
                raise ArgumentError, "Regexp multiline option not allowed in routing requirements: #{requirement.inspect}"
              end
            end
          end