Re: [XSLT 2.0] Extension functions, use-when and function-available()

  But I think the following wording from section 3.12 implies that it may not 
  do so:

  "Note that stylesheet functions are not included in the context, which means 
  that the function function-available will return false in respect of such 
  functions."

I think that "stylesheet functions" refers to functions declared in the
stylesheet with xsl:function doesn't it? It doesn't refer to vendor
supplied extensions built into the engine.

David