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The query string-queries-results-q5 does this: <item_summary> { concat($item/title,". ") } { concat($item/date,". ") } { string(($item//par)[1]) } </item_summary> that is, three expressions in curly braces. In the supplied test results, a single space has been inserted between the results of the first and second of these expressions, and also between the second and third. So the inserted full-stops are followed by two spaces rather than one as requested.
Fixed results. Removed extra offending spaces. Please cloe bug if in angreement.