Is the error XT0570?
[ERR XT0570] It is a type error if the supplied value of a
variable cannot be converted to the required type.
Yes.
How should we read the '?' in this case?
Convert to string if you can, else don't bother?
The ? is part of the type. It means that the value (after atomization) must
either be a string, or nothing (an empty sequence).
Michael Kay
http://www.saxonica.com/
--~------------------------------------------------------------------
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to: http://lists.mulberrytech.com/xsl-list/
or e-mail: <mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--