[luatex] incompatible change to mathcode

[Kazuki Maeda]

Dear All

> with lualatex I get
>
>   1E00061
>
> but apart from the obvious 61 at the end I have no idea where that
> number comes from?

I have experimented.


\luatexUmathcode`a="7"1"61
\the\mathcode`a            % 31457377 = 1*2^24 + 7*2^21 + 97

\luatexUmathcode`a="7"2"61
\the\mathcode`a            % 48234593 = 2*2^24 + 7*2^21 + 97

\luatexUmathcode`a="6"1"61
\the\mathcode`a            % 29360225 = 1*2^24 + 6*2^21 + 97


I hope this helps you.


Best regards,
Kazuki Maeda