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From: David Lichteblau <david@lichteblau.com>
To: Nunez Steve <steve_nunez@yahoo.com>
Cc: cxml-devel@common-lisp.net
Sent: Friday, June 19, 2009 7:33:53 PM
Subject: Re: [cxml-devel] cxml:doctype function

Quoting Nunez Steve (steve_nunez@yahoo.com):
> A follow-up question: Is there a way to emit a newline into the file?
> It would help in readability of some parts.

Unless the sink is in canonical mode (and canonical isn't the default
anymore in current cxml), newline characters in text are written
literally, so just write text including a newline.  Example:

CL-USER> (cxml:with-xml-output (cxml:make-string-sink)
          (cxml:with-element "test"
            (cxml:text (format nil "foo~%bar"))))
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<test>foo
bar</test>"


That's for manual breaks.  If you were hoping for automatic indentation,
there's the :INDENTATION keyword argument:

CL-USER> (cxml:with-xml-output (cxml:make-string-sink :indentation 2)
          (cxml:with-element "outer"
            (cxml:with-element "inner"
              (cxml:text (format nil "foo~%bar")))))
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<outer>
  <inner>
    foo bar</inner>
</outer>"

The indentation support isn't very good though.  I use it only for
debugging purposes.  Also note that it reindents texts, removing the
explicit newline.


d.