17171 2012-05-24 16:09:49 +0000 [XQ30] try/catch syntax 2012-06-19 16:38:51 +0000 1 1 1 Unclassified XPath / XQuery / XSLT XQuery 3.0 Last Call drafts PC Windows XP CLOSED FIXED P2 normal --- 1 andrew.eisenberg jonathan.robie jim.melton jmdyck public-qt-comments oldest_to_newest 68082 0 andrew.eisenberg 2012-05-24 16:09:49 +0000 I've just noticed that the try/catch expression requires parens in some circumstances. The following are allowed: (try {$x cast as xs:integer} catch * {1}) + 1 (try {$x cast as xs:integer} catch * {1}) eq 1 Remove the parens and these expressions do not parse. This comes about because we placed TryCatchExpr in ExprSingle: [40] ExprSingle ::= FLWORExpr | QuantifiedExpr | SwitchExpr | TypeswitchExpr | IfExpr | TryCatchExpr | OrExpr Perhaps it would be better located in ValueExpr: [96] ValueExpr ::= ValidateExpr | PathExpr | ExtensionExpr 68159 1 jonathan.robie 2012-05-25 22:16:28 +0000 Good suggestion. 69242 2 jonathan.robie 2012-06-19 16:37:47 +0000 The Working Group has decided not to make this change.