29607 2016-05-03 10:19:52 +0000 [FO31] array join 2016-07-21 15:07:49 +0000 1 1 1 Unclassified XPath / XQuery / XSLT Functions and Operators 3.1 Candidate Recommendation PC Windows NT CLOSED FIXED https://www.w3.org/XML/Group/qtspecs/specifications/xpath-functions-31/html/Overview.html#func-array-join P2 normal --- 1 tim mike andrew_coleman public-qt-comments oldest_to_newest 126321 0 tim 2016-05-03 10:19:52 +0000 Array join is defined as: declare function array:join($arrays as array(*)*) as array(*) { if (fn:count($arrays) lt 2) then $arrays else op:array-concat(fn:head($arrays), array:join(fn:tail($arrays))) }; if $arrays has count zero (i.e. $arrays is the empty sequence), then this definition says we return the empty sequence which is not permitted by the static return type, however the example The expression array:join(()) returns [ ]. shows the intention is that the empty array is returned. 126405 1 mike 2016-05-10 15:24:12 +0000 Agreed that this should be fixed: array:join(()) should return []. 126429 2 andrew_coleman 2016-05-12 19:55:53 +0000 ACTION A-643-02: MikeK to fix definition of array:join so that joining zero arrays returns an empty array 127017 3 mike 2016-07-21 15:07:49 +0000 Confirmed that the change was applied.