# File lib/big_record/routing_ext.rb, line 25
      def match_extraction(next_capture)
        # All non code-related keys (such as :id, :slug) are URI-unescaped as
        # path parameters.
        default_value = default ? default.inspect : nil
        %[
          value = if (m = match[#{next_capture}])
            CGI.unescape(m)
          else
            #{default_value}
          end
          params[:#{key}] = value if value
        ]
      end