# File lib/nanoc/helpers/blogging.rb, line 340
    def feed_url
      # Check attributes
      if @site.config[:base_url].nil?
        raise Nanoc::Errors::GenericTrivial.new('Cannot build Atom feed: site configuration has no base_url')
      end

      @item[:feed_url] || @site.config[:base_url] + @item.path
    end