On Mon, Dec 03, 2012 at 08:55:20AM +0100, Pander wrote:
> >> |! Undefined control sequence.
> >> \executeiffilenewer #1#2#3->\ifnum \pdfstrcmp
> >> {\pdffilemoddate
> >> {#1}}{\pdffil...
> >> l.19\includesvg{svgfig}|
>
> I have the same problem with xelatex (with and without -8bit).
>
> >> What is wrong? How do I make it working?
The string comparing feature is named/implemented differently:
* vanilla TeX: not available
* pdfTeX: \pdfstrcmp (inventor)
* XeTeX: \strcmp
* LuaTeX: \pdf@strcmp of package `pdftexcmds' (also plain TeX)
I would use \pdf@strcmp of package `pdftexcmds', because it detects the
engine and uses the appropriate primitive/method.
However, the next problem will be \pdffilemoddate:
* vanilla TeX: not available
* pdfTeX: \pdffilemoddate (inventor)
* LuaTeX: \pdf@filemoddate of package `pdftexcmds' (also plain TeX)
* XeTeX: not available (!)
Again \pdf@filemoddate can be used for the differnt engines (pdfTeX/LuaTeX),
but in case of XeTeX you are out of luck. You have to resort the shell
escape feature and some operating system depended command.
Yours sincerely
Heiko Oberdiek
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