Rails - Jul 2006 - embedded DTD using Builder

Hello -

I would like to include an embedded DTD in generated XML output. I am 
attempting to use the Builder::XmlMarkup class to do this. A simplified 
example follows:

     xml = Builder::XmlMarkup.new(:indent => 2)
     xml.declare! :DOCTYPE,:logs do
       xml.declare! :ELEMENT,:logs,''(log*)''
     end

The problem that I am encountering is the that second declare! call above 
is not generating what I need for a proper DTD. It produces:

     <?xml version="1.0" encoding="UTF-8"?>
     <!DOCTYPE logs [
       <!ELEMENT logs "(log*)">
     ]>

Instead what I believe I requires is:

     <?xml version="1.0" encoding="UTF-8"?>
     <!DOCTYPE logs [
       <!ELEMENT logs (log*)>
     ]>

The difference is the removal of the quotes.

Reading through the documentation and other resources that I have been 
able to locate, including the source to declare!, has not yielded any 
ideas about how to do this. Can anyone please make suggestions?

Thanks in advance - Marc