29487 2016-02-19 15:48:44 +0000 [XPath31] Section 3.11.3.1 Unary Lookup wrongly compares array?* to array:flatten 2016-03-11 13:17:53 +0000 1 1 1 Unclassified XPath / XQuery / XSLT XPath 3.1 Candidate Recommendation PC Windows NT RESOLVED FIXED P2 normal --- 1 martin.honnen jonathan.robie abel.braaksma andrew_coleman john josh.spiegel public-qt-comments oldest_to_newest 125165 0 martin.honnen 2016-02-19 15:48:44 +0000 The section https://www.w3.org/TR/xpath-31/#id-unary-lookup defines the '?' unary lookup operator on maps and arrays, for arrays at the item (4.) it says about doing array?* ----- quote ---- If the KeySpecifier is a wildcard ("*"), the UnaryLookup operator is equivalent to the following expression: for $k in 1 to array:size(.) return .($k) Note: This is also equivalent to Section 17.3.17 array:flatten FO31. ---- end quote ---- The comparison to array:flatten seems wrong in my understanding as array:flatten is recursive while the array?* definition is not recursive. So array:flatten([[1, 2], ['a', 'b']]) gives a sequence of atomic items (1, 2, "a", "b") while [[1, 2], ['a', 'b']]?* gives a sequence ([1, 2], ["a", "b"]) of two arrays. So I would like clarification on that note saying "This is also equivalent to Section 17.3.17 array:flatten FO31", in my view it is wrong. 125166 1 josh.spiegel 2016-02-19 16:01:58 +0000 I agree, good catch. 125253 2 john 2016-02-25 09:32:02 +0000 It might also be worthwhile adding for clarification an example where internal sequences are also 'flattened', e.g. [1, 2, (5, 6), [7, 8]]?* evaluates to (1, 2, 5, 6, [7, 8]) 125440 3 andrew_coleman 2016-03-11 13:17:53 +0000 At the meeting on 2016-03-08, the WG agreed to fix this editorially