[luatex] Luatex primitive names

[Hans Hagen]

Robin Fairbairns wrote:
> Hartmut Henkel <hartmut_henkel at gmx.de> wrote:
> 
>> On Wed, 11 Mar 2009, Heiko Oberdiek wrote:
>>
>>> On Wed, Mar 11, 2009 at 11:00:52AM +0100, Hans Hagen wrote:
>>>> Heiko Oberdiek wrote:
>>> My concern is the definition of \IfVersionIsTooOld. How it can be done
>>> in a *robust* and *reliable* way? \luatexversion seems the easiest way
>>> with lowest costs.
>> one could probably add something like this to the greeting text:
>>
>> This is LuaTeX, Version snapshot-0.36.0-2009031100 (Web2C 7.5.7)
>> Beware: this version is outdated, please upgrade.
>> **
> 
> what's more, i actually started to consider how one might do this.

ok, for your eyes only ...

         callback.register('start_run', function()
             texio.write_nl("Beware Robin: you run an outdated version 
of LuaTeX.")
         end


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