return {
  CodeBlock = function(block)
    local label
    label = block.classes[1]
    local cmd = "pygmentize -f html -O style=dracula,wrapcode,classprefix=py- -l %s %s"
    local fname = os.tmpname()
    do
      local _with_0 = io.open(fname, "w")
      _with_0:write(block.text)
      _with_0:close()
    end
    local _exp_0 = label
    if "moon" == _exp_0 or "moonscript" == _exp_0 then
      local p = io.popen((cmd .. " -x"):format("moonscript.py", fname))
      local out
      do
        local _with_0 = p:read("*a")
        p:close()
        out = _with_0
      end
      return pandoc.RawBlock("html", out)
    else
      local status, handle = pcall(function()
        return io.popen(cmd:format(label or "text", fname))
      end)
      local out = handle:read("*a")
      if out:len() == 0 then
        return block
      else
        return pandoc.RawBlock("html", out)
      end
    end
  end
}