[Dev-luatex] \primitive for non-primitive

28 Apr 2018

      Hi,

LuaTeX raises "Missing primitive name" error for the following:

\primitive\NONE
\end

PDFTeX (\pdfprimitive) and XeTeX (\primitive) simply ignores non-primitive, as
the PDFTeX manual says
...
This command executes the primitive meaning of the following control sequence,
regardless of whether the control sequence has been redefined or made undefined.
If the primitive was expandable, \pdfprimitive expands also.
On the other hand, if the following control sequence never was a primitive,
nothing happens and no error is raised.
(In some versions of pdfTEX prior to 1.40.19, an error was wrongly given.)
Hironobu Yamashita