I've now fixed this problem, but I'm classing it as a new feature rather than a bug fix, so it won't appear until 9.4.

Thanks for pointing it out.

Michael Kay
Saxonica


On 17/06/2011 09:56, Alexander Ulrich wrote:
Hi,

Now in more than 140 characters. I'm currently playing with Saxon's implementation 
of the higher-order features of XQuery 3.0. From Section 3.1.5.4 "Evaluating Partial 
Function Applications" I understand that both functions and function items can
be partially applied by calling them with an argument placeholder '?'.

For functions this works fine:

$ cat partial.xs 
declare function local:f($x, $y, $z) { $x + $y + $z };
let $g := local:f(23, ?, 5)
return $g(42)
$ saxon -qversion:3.0 -q:partial.xs 
Saxon evaluation license expires in 28 days
<?xml version="1.0" encoding="UTF-8"?>70

For function items resulting from an inline function however I get a syntax
error:

$ cat partial2.xs
let $f := function($x, $y, $z) { $x + $y + $z }
let $g := $f(23, ?, 5)
return $g(42) 
$ saxon -qversion:3.0 -q:partial2.xs
Saxon evaluation license expires in 28 days
Error on line 2 column 18 of partial.xs:
  XPST0003 XQuery syntax error near #... $y + $z } let $g := $f(23, ?,#:
    Unexpected token "?" in path expression
Static error(s) in query

The same error occurs for function items resulting from a literal function item:

$ cat partial3.xs 
let $f := fn:substring#3(?, 2, 4) 
return $f("foobar")
$ saxon -qversion:3.0 -q:partial3.xs 
Saxon evaluation license expires in 28 days
Error on line 1 column 25 of partial3.xs:
  XPST0003 XQuery syntax error in #let $f := fn:substring#3(?,#:
    Unexpected token "?" in path expression
Static error(s) in query

Is this an error on my side or am I misreading the standard? Admittedly, I'm
very new to XQuery...

(All using Saxon-PE 9.3.0.5J)

Best regards,
Alex
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