[luatex] macros to invoke lua in LaTeX

[Hans Hagen]

Robin Fairbairns wrote:

> i, for one, had never anticipated all the problems with the switch to
> pdftex; i bet there were those who did, and if this sort of discussion
> had happened then, we might have avoided the worst of the problems.

part of the problems were probaly due to the fact that in the process of 
developing pdftex, some primitive names changesd (even the prefix 
changed) simply as part of a cleanup

Hans

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