I've updated akt to version 1.1. https://github.com/TieDyedDevil/akt
The significant changes since 1.0 are: 1. Ctrl-C causes akt to signal SIGINT to the process on the receiving end of the output pipe. 2. Ctrl-C quits akt if its output is not piped. 3. akt exits when the process on the receiving end of the output pipe terminates. 4. NUL characters (Ctrl-@, Ctrl-` or Ctrl-space) are now passed through to the output. 5. You can now type a bare ESC. (Use akt with vi, if you like.) 6. You can no longer use ESC as a prefix key. Set your terminal emulator to map Alt to an ESC prefix. 7. Corrected three improperly mapped APL characters.