[XeTeX] \(pdf)mdfivesum

[Philip Taylor]

Apostolos Syropoulos wrote:

> [T]here is no reason to make XeTeX more complex than it is.

Cf. a recent reply by Margin Schröder on the TeXhax list :

> 2015-06-27 20:11 GMT+02:00 Walt Burkhard <burkhard at cs.ucsd.edu>:
>
>> I am wondering how to use the \hyphenation command when the
>> word contains ä, ö, ü oder ß.     I did try   \"a usw.  but this was not
>> welcome by the \hyphenation command.
> 
> It's 2015. Use a TeX engine that can handle Unicode: LuaTeX or XeTeX.

If users are to be pushed into using XeTeX, then those users are
entitled to expect that XeTeX will support all of the features that
earlier, more primitive, 8-bit TeX engines such as PdfTeX supported.
And PdfTeX supports \pdfmdfivesum, along with a whole slew of other
primitives that are currently missing from XeTeX :

> - \pdfcreationdate
> - \pdfescapestring
> - \pdfescapename
> - \pdfescapehex
> - \pdfunescapehex
> - \pdfuniformdeviate
> - \pdfnormaldeviate
> - \pdffilemoddate
> - \pdffilesize
> - \pdffiledump
> - \pdfrandomseed
> - \pdfsetrandomseed

Philip Taylor