[tex-live] Supplied a custom PDF trailer ID with XeLaTeX/xdvipdfmx

[Shunsaku Hirata]

> Looks very good so far. I have made a negative test also by adding a
> 17th byte 0xaa, but I did not receive an error, just:
>
>> osipovmi at blnn719x:/tmp/584dc556-5abf-4b5e-aa16-8cf70743b243/src
>> $ grep -a /ID ../build/index.pdf
>> <</Type/XRef/Root 1 0 R/Info 2 0
>> R/ID[<288ced1ae4f09aac705a2b516bb89703><288ced1ae4f09aac705a2b516bb89703>]/Size
>
> That feels a bit awkward not failing here.

Dvipdfmx actually gives a warning when invalid ID is supplied
and then ignores it, however, the warning message is
suppressed when dvipdfmx is called by XeTeX.

> Anyway, do we have to wait for TL2019 for make use of this?

I am not sure but you may need to build from source and
install by yourself if you want to make use of it before TL2019
release.

Thanks,

Shunsaku Hirata