A consistent style should help with contributors and readability. We use astyle as the formatter as can make a pretty good approximation of the current style and my preferred style. Astyle can be found at http://astyle.sourceforge.net/astyle.html
The amalgamated source concatenates all sources to a file janet.c which can be used for embedding janet, much in the same way as sqlite or mongoose.
only code that goes into final binary).