[Top] [All Lists]

Re: [xsl] W3C Specification of fn:filter() -- is this a bug in the document or in Saxon?

2019-09-08 19:54:13
On Mon, 2019-09-09 at 00:18 +0000, Dimitre Novatchev
dnovatchev(_at_)gmail(_dot_)com wrote:
The W3C F&O 3.1 spec (at
https://www.w3.org/TR/xpath-functions-31/#func-filter ) says:


The effect of the function is equivalent to the following 

Because "equivalent" means the two functions must produce the same
for for all possible values in the same set of arguments, 

That is one possible definition of "equivalent" but it is not the one
used in the Functions and Operators document...

You can never guarantee that two expressions are equivalent in your
sense, because of "errors and optimization". Any construct might raise
an error - in the case of this example, stack overflow if the recursion
gets too deep.


Liam Quin, https://www.delightfulcomputing.com/
Available for XML/Document/Information Architecture/XSLT/
XSL/XQuery/Web/Text Processing/A11Y training, work & consulting.
Carefoot Web-slave for historical images http://www.fromoldbooks.org/
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
EasyUnsubscribe: http://lists.mulberrytech.com/unsub/xsl-list/1167547
or by email: xsl-list-unsub(_at_)lists(_dot_)mulberrytech(_dot_)com

<Prev in Thread] Current Thread [Next in Thread>