[luatex] macros to invoke lua in LaTeX

[Taco Hoekwater]

Manuel Pégourié-Gonnard wrote:
> Taco Hoekwater a écrit :
>> You could also consider just using \directlua, like so:
>>
>>   \def\directlua{\directlua0}
>>
> You mean \def\directlua{\pdfprimitive\directlua0}, don't you?

Pdftex's \pdfprimitive is \primitive in luatex. Iirc, I removed
some other pdf prefixes also (I am sure it is mentioned in the
manual, but I don't remember offhand).