Re: [xml-dev] isXPath1 / isXPath2 -- not(/..)

On Sat, Dec 19, 2015 at 9:22 AM, Hermann Stamm-Wilbrandt <STAMMW@de.ibm.com> wrote:

"(4=5)=/.."

There seems to be something wrong with the type evaluation of Saxon 9.1J

When I evaluate this:

/.. instance of item()

the result is:

false()

As item() is the root of the type system and every possible value is an item(), the above result means that /.. has type that isn't defined anywhere in the type system.

Seems this has something to do with the "highest possible derived type", or is just a bug.

Also, we do need a type-of(expr) function.

Any thoughts, please?

--

Cheers,

Dimitre Novatchev

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