xml-dev - Problem with xml:lang

[Pierre Attar <patt@tireme.fr>]

Hi,

I've some problem to qualify a potential bug on the use of the xml:lang 
attribute with Xalan 1.1, which uses xerces 1.1.2. Do I miss something or 
do they miss something ?

Using the XML and Namespace recommendation,
"The namespace prefix, unless it is xml or xmlns, must have been  declared 
... The prefix xml is by definition bound to the namespace name 
http://www.w3.org/XML/1998/namespace."

I try :

<!DOCTYPE TEST  [
<!ELEMENT TEST (#PCDATA)>
<!ATTLIST TEST
         xml:lang NMTOKEN  'fr'
 >
]>
<TEST xml:lang="fr">Some text in french</TEST>

The answer from Xerces is :
[Error] attribute xml:lang not found in element type TEST
Parser error: Attribute "xml:lang" must be declared for element type "TEST".


Even if I add a namespace declaration
<!DOCTYPE TEST  [
<!ELEMENT TEST (#PCDATA)>
<!ATTLIST TEST
         xml:lang NMTOKEN  'fr'
 >
]>
<TEST xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="fr">Some 
text in french</TEST>

It does not work.

The only thing that does work is well formed validation, with no doctype :
<?xml version="1.0" encoding="utf-8"?>
<TEST xml:lang="fr">Some text in french</TEST>


Any idea ?

Regards,

Pierre