[Bug 7976] New: [XSLT 2.1] xsl:analyze-string applied to an empty sequence

http://www.w3.org/Bugs/Public/show_bug.cgi?id=7976

           Summary: [XSLT 2.1] xsl:analyze-string applied to an empty
                    sequence
           Product: XPath / XQuery / XSLT
           Version: Working drafts
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: normal
          Priority: P2
         Component: XSLT 2.1
        AssignedTo: mike@saxonica.com
        ReportedBy: mike@saxonica.com
         QAContact: public-qt-comments@w3.org


The new fn:analyze-string() function behaves like most string functions in that
it accepts an empty sequence as input, and treats it in the same way as a
zero-length string (in both cases the output will be an empty
fn:analyze-string-result element).

The xsl:analyze-string instruction in XSLT 2.0 does not work this way: it
reports an error if the input is an empty sequence. So, for example, if there
is no address element then <xsl:analyze-string select="address"> will cause a
type error, but if the address element is present and empty, it will produce
empty output.

I propose we change this (a) for usability, (b) for consistency, and (c) to
make it a little bit easier for implementations to reuse code between
xsl:analyze-string and fn:analyze-string.


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Received on Tuesday, 20 October 2009 11:14:49 UTC