[foonathan]

Author here, I didn't intend to give a motivation for purging it, many people in the C++ community want to and I wanted to explore the feasibility of that in the current status.

> like embedded systems or digital signal processing, where portability, code size and target specific substitutions or optimisations matter, there is simply no reason and no way to get rid of the preprocessor without breaking things.

It certainly is, I know embedded projects where they use template meta programming to get an even more advanced code generator.