[xsl] node test on element of an attribute

[Georges Schmitz <georges.schmitz@xxxxxxxxx>]

While recursively copying and manipulating an xml tree, I need to handle 
the same attribute differently, depending on its element.

I have:
1) entity/@vo-name
2) property/@vo-name

I hoped to be able to treat this in one template match for @vo-name, 
something like

<xsl:template match="@vo-name" mode="copy-modify">
 <xsl:variable name="temp">
   <xsl:choose>
     <xsl:when test="~something with entity~" >...</xsl:when>
     <xsl:when test="~something with property~" >...</xsl:when>
   ...

and to distinguish them in between the template (eg. with xsl:choose). 
But is there an appropriate test for the node name, when my current node 
is an attribute? Obviously I can't say "parent::entity".

Solution may be XSLT2.0

Many thanks,
Georges