NokogiriSlopWithGithubIssues.rb

    def consolidate(*issue_uris)
      result = Nokogiri::XML.parse '<issues />'
      issue_uris.each do |uri|
        fetch_doc(uri).css('issue').each do |issue|
          if issue.comments.content.to_i > 0 then
            issue.comments.unlink

            comments_doc = fetch_doc("#{@comments_base}/#{issue.number.content}")
            comments_doc.comments.parent = issue
          end
          result.root << issue
        end
      end
      result
    end

    def fetch_doc(url)
      response = nil
      while true
        response = post(url)
        if response.code == '403'
          $stderr.puts "Sleeping 10..."; sleep 10; next
        end
        break
      end

      raise RuntimeError, "Did not fetch #{url} successfully (#{response.code}) with " +
              "#{@login}/#{@token}" unless response.is_a? Net::HTTPSuccess

      Nokogiri::Slop(response.body)
    end

Using Nokogiri::Slop to export issues with their comments