non-absolute xml namespaces

[Julian Reschke]

Joe Orton wrote:
> OK, I've changed it to use http: URIs everywhere I could find, since 
> this type of URI was legitimately rejected by some parsers.  But since 
> you have to cope with DAV: anyway, not sure that's worth much ;)
> 
> Let me know if I've missed anywhere.
> ...

Legitimately only when the parser wasn't updated for RFC3986:

"The ABNF has been corrected to allow the path component to be empty. 
This also allows an absolute-URI to consist of nothing after the 
"scheme:", as is present in practice with the "dav:" namespace [RFC2518] 
and with the "about:" scheme used internally by many WWW browser 
implementations. The ambiguity regarding the boundary between authority 
and path has been eliminated through the use of five separate path 
matching rules." -- 
<http://greenbytes.de/tech/webdav/rfc3986.html#rfc.section.D.2.p.4>

BR, Julian