Currently they still fail because <ul><li>first<li>second</ul> is interpreted as
<ul><li>first<li>second</li></li></ul> instead of
<ul><li>first</li><li>second</li></ul>

-breakLines outputs "\n>" instead of ">" for the opening tags of elements.
This makes it less likely that there will be excessively long lines in the
output which break HTML emails - lines longer than 998 chars can be wrapped in
a syntactically invalid way.

-onlyContents omits the outermost open and close tag, returning only the
serialized child nodes (like innerHTML property in a browser).  This allows
HTML fragments to be generated without having to process the result to strip
off the dummy document element wrapper.

…rror, don't add the node or set the result to the nodecmd