[XeTeX] Stack exceeded in XeTeX

[Ulrike Fischer]

Am Fri, 8 Feb 2008 10:28:19 -0000 schrieb John Was:

> Dear Peter

I'm Ulrike 

> 
> This is the mystery:  I am *not* including ad2head again.  In this failed 
> example I have commented out \input ad2head from the start of the file 
> black.tex, so there is no reason for XeTeX to think that it has to \input 
> ad2head a second time.  

Perhaps the comment sign is lost somehow. I remember vagely to have read
about XeTeX loosing something at the start of a file in connection with
\input because it has to check for BOM. Perhaps something similar is
happening here. 

Try to put something like \show\par after the comment sign to check. 

-- 
Ulrike Fischer