On Thu, Mar 11, 2010 at 11:25:44PM +0200, Khaled Hosny wrote:

> On Thu, Mar 11, 2010 at 09:24:06PM +0100, Heiko Oberdiek wrote:
> > On Thu, Mar 11, 2010 at 10:12:25PM +0200, Khaled Hosny wrote:
> > 
> > > What about the approach we used in etex.src; redefining \patterns and
> > > \hyphenation to use corresponding lua functions, so we don't need to
> > > duplicate hyphenation files and, AFAIU, solves the catcode issue.
> > 
> > \patterns is not read by Lua but by TeX, thus the catcode
> > problem remains.
> 
> I don't claim that I understand anything, but do we have some example
> for the likes of me to see the problem?

* verbatim mode
* babel shorthands
* other active characters
* ...

At format generation the catcodes are known, the pattern files
are written for that case. Later the catcodes can be anything.

Yours sincerely
  Heiko <[log in to unmask]>