# [luatex] Luatex primitive names

Hans Hagen pragma at wxs.nl
Tue Mar 10 23:25:31 CET 2009

```Manuel Pégourié-Gonnard wrote:
> Arthur Reutenauer a écrit :
>>> LuaTeX is still beta, so in my opinion it makes no sense to write code
>>> compatible with previous versions of luatex (previous to the current
>>> one at every moment, while it still be in beta state).
>>   Agreed.
>>
> Sorry but I don't agree. Detecting the version (if a convenient mechanism is
> available) costs essentially nothing and can make things simpler for users,
> which is always important, even in beta stage, IMHO.

simple ... hm ...

\pdftexversion
\OmegaVersion
\XeTeXversion
\luatexversion
\eTeXversion

lucky us that most users don't have to gamble on the casing in these
primitives

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