CodeBlock: (block) ->
  if block.classes[1] == "moon" or block.classes[1] == "moonscript"
    fname = os.tmpname!
    with io.open fname, "w"
      \write block.text
      \close!

    p = io.popen ("pygmentize -f html -l moonscript.py %s -x")\format fname
    out = p\read"*a"

    pandoc.RawBlock "html", out