[pstricks] value of shadow can't be a macro

[Marco Daniel]

Dear Jean,

thanks for your reply. I was able to locate the problem. It depends on 
the implementation of xkeyval.

The following redefinition will work:

\makeatletter
\def\XKV at ch@ckch at ice#1#2#3{%
   \def\XKV at tempa{#1}%
   \ifx\XKV at tempa\@nnil\let\XKV at tempa\@empty\else
     \def\XKV at tempa{\def#1{#2}}%
   \fi
   \begingroup\edef\x{\endgroup\noexpand\in@{,#2,}}\x{,#3,}
%%%  \in@{,#2,}{,#3,} original
   \ifin@
     \ifXKV at pl
       \XKV at addtomacro@n\XKV at tempa\@firstoftwo
     \else
       \XKV at addtomacro@n\XKV at tempa\@firstofone
     \fi
   \else
     \ifXKV at pl
       \XKV at addtomacro@n\XKV at tempa\@secondoftwo
     \else
       \XKV at toks{#2}%
       \XKV at err{value `\the\XKV at toks' is not allowed}%
       \XKV at addtomacro@n\XKV at tempa\@gobble
     \fi
   \fi
   \XKV at tempa
}
\makeatother

regards
Marco