All teidata.pointer attributes

Running an XSL transform against a TEI document, I want to match all TEI 
elements that contain at least one teidata.pointer attribute.

I can’t match just on attribute name. In some elements @value is a 
pointer, in others it’s text. Sometimes @class is a pointer, sometimes not.

Is there a master list of attributes that can be pointers and the 
elements in which they are?

(Even better if the list is in a form that makes it easy to use in an 
XSL match. Double extra better if you can show me the very XSLT that 
will copy the element and add an attribute “haspointer=’true’”!)

Thanks!
John