[xsl] no doc-available outside xslt folder with saxon8.jar?

[Frank Marent <frank.marent@xxxxxxxxxxx>]

hi all.

is it a known issue (feature, misunderstanding from me?) that this  
xslt (myxslt.xsl)

  <?xml version="1.0"?>
  <xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/ 
XSL/Transform">

  <xsl:template match="/">
    <xsl:comment select="doc-available('file:/C:/any.xml')/>
  </xsl:template>

  </xsl:stylesheet>

reports *true* when run from within i.e. oxygen xml editor (running  
saxon) but reports *false* when started as

  java -jar saxon8.jar -o testp.xml test.xml myxslt.xsl ...?

i'm running it on windows xp on a user with all administrator rights  
started from command line. the file any.xml is at the right place.  
the same thing is with addressing subfolders. the base xml file  
test.xml is without any relevant content.

but: the xslt run through saxon8.jar reports *true* when any.xml is  
in the *same folder* like myxslt.xsl and the comment selects

  ...
  <xsl:comment select="doc-available('any.xml')/>
  ...

and also reports true even when calling

  ...
  <xsl:comment select="doc-available('file:/ 
C:/...the_path_to_the_myxslt.../any.xml')/>
  ...

thanks for any appriciated help. this must be a mistake by me i guess.

frank