same_feed_type?

# File lib/rss/rss.rb, line 1294
    def same_feed_type?(type)
      if /^(atom|rss)?(\d+\.\d+)?(?::(.+))?$/i =~ type
        feed_type = ($1 || @feed_type).downcase
        feed_version = $2 || @feed_version
        feed_subtype = $3 || @feed_subtype
        [feed_type, feed_version, feed_subtype] == feed_info
      else
        false
      end
    end