On Tue, Aug 16, 2011 at 12:53 PM, Saašha Metsärantala <[log in to unmask]> wrote:
> Hello!
>
> According to the BNF, "string" is yet to be defined.
>
> For future interoperability, we will probably want to use namespaces for
> qualifiers (for seasons and calendars) in later versions of EDTF. Then, we
> may want to use QNames, URL, URI, IRI, LEIRI, URN ...

Keep in mind that if EDTF is a success, it will be used outside of
XML. I, for example, want to use it primarily in a JSON data format,
and also embedded in HTML (including non-XML HTML5).

So I think we should avoid any solutions that are too particularly
tied to XML (like QNames).

Bruce