Happy New Year nixers, I'm back again with status updates.

https://github.com/tudurom/usam it's public now. Read the readme!

I implemented basic editing commands (a, c, i, d) and a basic loop (x). You can also do text manipulation on a pipe to better integrate the thing with the shell. The programs don't read from the pipe while data is written to the pipe. The data must be written, then the programs read it. It's a known limitation.