[luatex] Getting the extra primitives?

[luigi scarso]

On Tue, Feb 16, 2010 at 11:11 AM, Joseph Wright
<joseph.wright at morningstar2.co.uk> wrote:
> Hello all,
>
> I'm trying to build a simple format including the e-TeX primitives, etc.
> using LuaTeX in TeX Live 2009. Following the manual, I've got
>
> \begingroup\expandafter\expandafter\expandafter\endgroup
> \expandafter\ifx\csname directlua\endcsname\relax
> \else
>  \directlua{tex.enableprimitives('',tex.extraprimitives ())}
> \fi
>
> However, this dies horribly:
>
> This is LuaTeX, Version beta-0.40.6-2009110118 (Web2C 2009)

It's an older version, actually we are at 0.50
This is LuaTeX, Version beta-0.50.0-2010021609
I think it's always better to work with last release.

-- 
luigi