30131 2017-06-21 23:15:10 +0000 [xslt30ts] merge-051 and merge-082 use position() in xsl:merge-key 2017-06-22 09:08:11 +0000 1 1 1 Unclassified XPath / XQuery / XSLT XSLT 3.0 Test Suite Proposed Recommendation PC All RESOLVED FIXED P2 normal --- 1 mike abel.online public-qt-comments oldest_to_newest 128664 0 mike 2017-06-21 23:15:10 +0000 Tests merge-051 and merge-082 use <xsl:merge-key select="position()"/> expecting the merge keys to be a monotonic sequence of integers 1..N. However, we state in §15.5 that a merge key is evaluated with a singleton focus, so the value of position() will always be 1. Unfortunately this invalidates what the tests are trying to achieve, which is simple pairwise merging of two input sequences. The functionality can be achieved, but less conveniently, using accumulator values as the grouping keys. 128665 1 mike 2017-06-22 09:08:11 +0000 I have changed tests merge-051 and merge-082 to use accumulators instead of calling position(), and I have added a new test merge-092 (inspired by a Saxon bug report from Martin Honnen) that checks that the merge key is indeed evaluated with a singleton focus.