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[Bug 29836] New: [FO31] fn:transform circularities

From: <bugzilla@jessica.w3.org>
Date: Tue, 20 Sep 2016 15:51:35 +0000
To: public-qt-comments@w3.org
Message-ID: <bug-29836-523@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=29836

            Bug ID: 29836
           Summary: [FO31] fn:transform circularities
           Product: XPath / XQuery / XSLT
           Version: Candidate Recommendation
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Functions and Operators 3.1
          Assignee: mike@saxonica.com
          Reporter: abel.braaksma@xs4all.nl
        QA Contact: public-qt-comments@w3.org
  Target Milestone: ---

If you call a stylesheet that itself calls fn:transform that in turn, directly
or indirectly, calls itself, we have a circularity dependency.

This may be intentional and cause a recursion that ends. It may indicate a
failure and cause indefinite recursion.

I don't think there is any way this can be detected, esp. since the execution
context is implementation dependent (or defined?). But I think it makes sense
to add a little Note explaining that it is allowed and that infinite recursion
may go undetected.

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