textile and maruku problem

问题

I've developed custom filters for HAML (http://github.com/alec-c4/cb-haml-filters) and have a small problem with textile and maruku. Maybe you can help me with this

1. Problem with textile with code

     %h2 Textile test
     :cbtextile
       h4. YouTube video
        http://www.youtube.com/watch?v=0_IXrjqKbE4&feature=player_embedded
   

after parsing i see embeded youtube video inside h4 tag (there are 1 empty line between h4. and http://youtube... i mean \n\n). But on TWO empty lines (\n\n\n) - all renders correctly. In markdown - all html renders fine.

2. Maruku. all is ok, but scribd filter causes error

   REXML could not parse this XML/HTML:

来源：https://stackoverflow.com/questions/1973717/textile-and-maruku-problem