Behavior of the to-lower-case function

Hi all,

 

We from HERAS-AF implemented an XACML 2.0 evaluation
engine.

Therefore we had to implement the function

 
urn:oasis:names:tc:xacml:1.0:function:string-normalize-to-lower-case

The issue I am currently facing with this function
is that it does a “to lower case”.

 

In XACML 2.0 it
simply says “This function SHALL take one argument of data-type ‘http://www.w3.org/2001/XMLSchema#string’
and SHALL normalize the value by converting each upper case character to its
lower case equivalent.”. No word about locales.
But to-lower-case always depends on the locale.

 

In XACML 3.0 it says “Case mapping shall be done as specified for
the fn:lower-case function in [XF] with no tailoring for particular
languages or environments.”. I am not an expert in this area and don’t
really understand what is meant with “no tailoring for particular languages
and environments”.

 

So my questions:

·        
Should
the handling in XACML 2.0 be the same as in XACML 3.0?

·        
How is
this meant “no tailoring for particular languages and environments”?

 

 

I am looking forward to hearing from you.

 

Regards

Florian