[luatex] plain LuaTeX

[Joseph Wright]

Elie Roux wrote:
> My question would by: why do you accept things like \pdfoutput for
> pdfTeX and reject \newattribute (that should certainly be renamed
> \luanewattribute) for LuaTeX?

\pdfoutput is an engine primitive.  So there is no *format* change
needed (in the same way that if I run e-TeX rather than Knuth's TeX I
get \scantokens, etc.).  The point here is that a plain luatex format
will have the new primitves, but no new macros (which only Knuth can
do), surely.
--
Joseph Wright