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
