return {
  CodeBlock = function(block)
    if block.classes[1] == "moon" or block.classes[1] == "moonscript" then
      local fname = os.tmpname()
      do
        local _with_0 = io.open(fname, "w")
        _with_0:write(block.text)
        _with_0:close()
      end
      local p = io.popen(("pygmentize -f html -l moonscript.py %s -x"):format(fname))
      local out = p:read("*a")
      return pandoc.RawBlock("html", out)
    end
  end
}