improvements to fn:sort functions

Hi all,
    Currently, there are three XPath 3.1 fn:sort functions defined (in the
section 16.2.6 fn:sort of the XPath 3.1 F&O spec). There is no provision in
these functions, to specify the sort order (i.e, ascending or descending
sorting). I guess, currently only ascending sorting is available by these
functions.

I propose, to add an optional trailing parameter [$sortOrder as xs:integer]
to the three fn:sort functions. The value 0 can be for ascending sorting
(which could be default), and value 1 for descending sorting.


-- 
Regards,
Mukul Gandhi