[XeTeX] Error of xeCJK and fonspec (Bokov Gleb - First Message)

[Bruno Le Floch]

Hello,

This is caused by fontspec, I'd say, due to somewhat recent changes in
the expl3 supporting package: \c_keys_code_root_tl was renamed
\c__keys_code_root_tl at some point, to reflect its internal nature,
and fontspec should not be using it.  I don't know if this was fixed
in more recent versions of fontspec (it seems to be).  I've added the
maintainer in Cc.

In the mean time, a temporary (ugly) workaround is to add

\expandafter\providecommand
  \csname c_keys_code_root_tl\endcsname *
  {\csname c__keys_code_root_tl\endcsname}

early in your document.

Best regards,
Bruno

On 5/30/13, Gurebu Bokofu <gurebu_bokofu at hotmail.com> wrote:
> Hello everybody!
> I need to use xeCJK and fontspec packages,however, when I try to load either
> of xeCJK  or fontspec ,it reads
> ("C:\Program Files (x86)\MiKTeX2.9\tex\latex\fontspec\fontspec.cfg"!
> Undefined control sequence.<argument> \c_keys_code_root_tl
>               fontspec/Ligatures/Historicall.8
> ...tureoption{Ligatures}{Historic}{Historical}
> Also, same message will be if to load xeCJK only:
> \documentclass{article}\usepackage{xeCJK}
> \begin{document}This is the XeLaTeX test.\end{document}
> By other words, XeLaTeX do not understand the package, isn't it?
> Regards,Gleb.