[XeTeX] Fontspec mappings causing errors in ToC/chapter-headings in memoir class documents

[Ulrike Fischer]

Am Sun, 19 Dec 2010 15:27:58 +0530 schrieb Shrisha Rao:

> Greetz.
 
> I find that when a Roman-based fontspec mapping is used in a
> chapter title or a ToC entry in a memoir document, it causes an
> error if the input text (not the output) offends (Xe)TeX in some
> way; thus, `kR^ishhNaM vande jagadgurum.h' (which should simply
> be rendered as कृष्णं वन्दे जगद्गुरुम्) causes a problem because
> (Xe)TeX thinks `R^i' can only occur in math mode.  Other input
> texts do not seem to cause such a problem, and the same string
> also causes no problem inside a chapter (only in chapter titles
> and ToC entries).

Your problem has nothing to do with fontspec. Your commands \dev etc
change catcodes. But when you use them in the argument of a command
this changes are too late. The catcodes are already fixed. 

Change the catcodes before the \chapter* command. 

-- 
Ulrike Fischer