Erlang alterline is an independent set of patches to Erlang/OTP maintained by Open Source volunteers (well, technically, only one volunteer so far). The intention of alterline is not to fork Erlang, though — the best outcome for it is to be merged into official source tree. However, since most probably it will not be easy to push some of these patches through Erlang/OTP, there is a need to maintain a complete patched repo for our common convenience.
What kind of patches?
So far I patched Erlang only as necessary to work around compiler bugs and limitations while working on a large(ish) Erlang project— primarily focusing on compiler fixes & extensions