need clarification on 2.13 (Normalization Checking)

Hi.

2.13 currently says:

"Note that the normalization requirements may, in principle, make certain
XML 1.0 documents not well formed XML 1.1 The Working Group believes that
such documents are either nonexistent or vanishingly rare in practice."

As far as I understand the requirement, any XML 1.0 document that uses
Unicode composing characters would become non-wellformed in 1.1, right?

If this is the case, protocols that currently use XML 1.0 for marshalling
will either

- have to stay with XML 1.0 or

- ensure that composing characters do not appear in protocol messages.

Right now I think this affects how Apple is marshalling international
characters in their WebDAV servers (modified Apache mod_dav) and their MacOS
X filesystem drivers.

Julian