xml-dev - Re: Problem with xml:lang

[Phil <philg@easynet.co.uk>]

I think xml:lang is a reserved XML attribute, so that could be why Xerces is
complaining. Does it complain if you do:

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

- if it does, it must not like namespace-prefixed attributes in the DTD

Phil

Pierre Attar wrote:

> 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