Action Item: Editors to add a note to the spec about the subset of XPath in XSLT - Update (addressing feedback from Felix and Yves)

Hi, 
Here's a slightly modified text. It includes feedback from Felix (see
http://lists.w3.org/Archives/Public/public-i18n-its/2006OctDec/0076.html)
and Yves (see
http://lists.w3.org/Archives/Public/public-i18n-its/2006OctDec/0078.html)
Cheers, 
Christian 
=== 
Caveat Related to XSLT-based Processing of ITS Selector Attributes 
The values of ITS "selector" attributes are XPath absolute location paths.
Accordingly, the 
following is a legitimate value: 
myElement/descendant-or-self::*/@* 
Unfortunately, values like this cause trouble when they are used in
XSLT-based processing 
of ITS where the values of the ITS "selector" attributes are used as values
of "match" attributes 
of XSLT templates. The reason for this is the following: "match" attributes
may only contain 
a restriction/subset of XPath expressions, so-called "patterns" (see
http://www.w3.org/TR/xslt#patterns <http://www.w3.org/TR/xslt> ). 
Basically the following restrictions hold for patterns: 
- only axes "child" or "attribute" allowed 
- "//" or "/" possible 
- id() or key() function possible 
- predicates possible 
Using only XSLT patterns in ITS "selector" attributes helps to avoid this
issue. In many 
cases, this is possible by using patterns with predicates. The value above
may for example be 
rewritten as follows 

*[self::myElement]/@* | myElement//*/@*