# File lib/jekyll-paginate/pager.rb, line 50
      def self.in_hierarchy(source, page_dir, paginate_path)
        return false if paginate_path == File.dirname(paginate_path)
        return false if paginate_path == Pathname.new(source).parent
        page_dir == paginate_path ||
          in_hierarchy(source, page_dir, File.dirname(paginate_path))
      end