[luatex] TeX without TeX revised and expanded

[Patrick Gundlach]

Hello Robert,

nice job! 

Just to let you know: the TeX without TeX was originally inspired by Yannis Haralambous' articles on the wiki and then extended. It was the base for my software (https://github.com/speedata/publisher). See the Lua source directory at https://github.com/speedata/publisher/tree/develop/src/lua which contains the complete logic.

Patrick