[Xy-pic] Conflict between unicode-math and xypic

[Rémy Oudompheng]

On 2010/11/9 Rémy Oudompheng <remyoudompheng at gmail.com> wrote:
> It seems that the patch for xypic that is included in unicode-math
> assumes that xypdf is loaded, which is not true when using xelatex. By
> the way, are these patches backwards-compatible with older engines
> like tex and pdftex? I was wondering whether they could be included in
> xypic main codebase.
>
> By the way I'm encountering an apparently unrelated error:
> ! Font \nullfont has only 7 fontdimen parameters.
> \um_font_dimen:Nnnnn ...criptfont:D }}}}}}}\c_two

Actually, since the patch for xypic is not needed when using xetex, I
surrounded it by \ifluatex ... \fi and I seem to get correct results
with both engines.

-- 
Rémy.