The function should be available, but you need the right incantations to
enable XPath 4.0 functionality. It's not enabled by default because we don't
want people to accidentally find themselves using features that change in a
later draft.

Michael Kay

> On 8 Oct 2026, at 18:39, Graydon graydon@xxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Thu, Oct 08, 2026 at 04:53:47PM +0000, Martin Honnen martin.honnen@xxxxxx
scripsit:
>> I think with commercial editions of Saxon 13 (EE/PE) available for oXygen
as
>> a plugin there is support for the 4.0 function
>>
https://qt4cg.org/specifications/xpath-functions-40/Overview.html#func-hash
>
> Being able to use the 4.0 function would be especially helpful.
>
> Thank you! I'll look into the plugin.
>
> --
> --
> Graydon Saunders  | graydonish@xxxxxxxxxxxx
> \xDE\xE6s ofer\xE9ode, \xF0isses sw\xE1 m\xE6g.
> -- Deor  ("That passed, so may this.")