>>>>> "Michael" == Michael Ludwig <mlu@xxxxxxxxxxxxx> writes:

    >> 3. How to find non-ascii characters in the XML file and report
    >> an error using XSLT.

    Michael> Don't use XSLT for this. Add the following XML
    Michael> declaration to your input documents:

    Michael>     <?xml version="1.0" encoding="us-ascii"?>

    Michael> This will ensure the document won't get parsed unless it
    Michael> is pure ASCII.

Or better still, put the document through an identity transformation
that specifies <xsl:output encoding="US-ASCII" />.

That way you eliminate any possibility of an error.
-- 
Colin Adams
Preston Lancashire