[XeTeX] datetime2 package and XeTeX

[Akira Kakuto]

Dear Daniel,

> However, the package documentation states that this information is not
> available from XeTeX (see page 5 of version 1.00 documentation):
>   "...unless you are using XELATEX in which case the seconds and time
> zone are omitted. (XELATEX doesn’t provide this information.)"

I don't know the new datetime2 package, but probably
it depends on primitives such as \pdfcreationdate, and
\pdffilemoddate.
At present they are only in the pdfTeX engine.
But it will not be hard for Khaled to introduce
them in XeTeX, if he admits its usefulness, and
if he has time.

Best,
Akira