(1) The HTML5 spec permits xmlns="http://www.w3.org/1999/xhtml"; to be
added on any HTML element. However, XMLmind editor does not allow the
xmlns attribute be added except as root element. So if I want to add
xmlns="http://www.w3.org/1999/xhtml"; to a <table> element, XXE does not
permit it do be done. I wish that XXE would permit this to be done. The
usecase I have in mind is pasting a HTML element into a <foreignObject>
section of a <svg> element - and similar usecases - for this use case, I
would like to prepare the HTML elements to be pasted, by first addign
the xmlns="http://www.w3.org/1999/xhtml";.
(2) I created a document svg-test.svg with the content of the example
document found on this page:
<https://developer.mozilla.org/en-US/docs/Web/SVG/Element/foreignObject>.
However, when XXE opened that file, the <div> found inside the SVG
<foreignObject> section, became transformed from
* <div xmlns="http://www.w3.org/1999/xhtml";>
to
* <ns2:div>
OK, so much for that SVG document example. But as XXE is not an SVG
editor, it is perhaps only to be expected that the behavior for such
documents is unpredictable.
However, from time to time, if I empbed a SVG section inside a XHTML
file, I sometimes - or I would say: rather regularily - experience the
same kind of behavior: the <svg> element becomes <ns:svg>. In
particular, this seems to happen if the embedded <svg> element contains
<foreignObject> which, in turn, contains an HTML section.
(As I often use the <xinclude> element - which has its own namespace, I
(ir)regularily have the same experience with that element - it becomses
auto-transformed to <ns:include>.)
I might have an original document where everything works OK, but then I
make a copy of that document, and open the copy in XXE, and suddenly the
"foreign" elements get prefixed with <ns: - for no obvious reason. To
me, the original document and the copy document seems to have - and do
have - identical content, but when XXE opens them, the copy is given a
different treatment than the original.
The workaround I tend to use is EITHER to "massage" the source code
until it "clicks" OR to not "naïvely" copy a document, but rather to
add elements via XXE’s interface. But I always lose a litle time on
making it work ...
So to sum up: This message contains two RFEs: (1) allow
xmlns="implied-ns" to be added and (2) make it so that XXE does not, in
certain (hard to pinpoint) cases automatically transform <foo
xmlns="bar"> into <bar:foo>.
Leif Halvard Silli
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