http://www.w3.org/Bugs/Public/show_bug.cgi?id=1882 Summary: comment syntax Product: XPath / XQuery / XSLT Version: Last Call drafts Platform: PC OS/Version: Windows XP Status: NEW Severity: normal Priority: P2 Component: XQuery AssignedTo: chamberl@almaden.ibm.com ReportedBy: davidc@nag.co.uk QAContact: public-qt-comments@w3.org The Xquery Test file Queries/XQuery/Expressions/Operators/CompExpr/GenComprsn/ GenCompEq/generalexpression12.xq Has what is apparently a malformed comment (: operand2 = empty sequence) ^ (:*******************************************************:) and the test parser applet and saxon both report a parse error on this file. I was going to raise a bug under the test suite but the grammar for comments is [154] Comment ::= "(:" (CommentContents | Comment)* ":)" [155] CommentContents ::= (Char+ - (Char* ':)' Char*)) note that [155] is any string of characacters that don't include an _end_ marker. As such it would appear that operand2 = empty sequence) (:******************************************************* matches CommentContents and so (: operand2 = empty sequence) (:*******************************************************:) is a valid (single) comment. It would appear that [155] is in error and should forbid a comment start rather than a comment end: [155] CommentContents ::= (Char+ - (Char* '(:' Char*)) ^^ which would then force a nested (: to be parsed as a nested Comment as allowed by [154]. (And the test file would then be in error and require (: operand2 = empty sequence) changing to (: operand2 = empty sequence:) DavidReceived on Tuesday, 23 August 2005 10:08:36 UTC
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