[XeTeX] XeTeX infinite loop [][][][][][] bug - possible fix

[Christopher Creutzig]

Bruno Voisin wrote:

> Which package are you using, which defines \externalfigure? And 
> \placefigure, \startcombination and \placecombination? Or is this 
> ConTeXt and not LaTeX?

  ConTeXt.

> I would advise against any space in optional arguments (inside []).

  ConTeXt does not use the LaTeX convention of having [] for optional
arguments only.  Besides, would you really advise against
\chapter[short title]{Pretty long title only to appear once in the document}
in LaTeX?  (But this is getting off-topic.)

Christopher