Running code when a script exits

When I type Ctrl-G nothing happens apparently, I have recorded a GIF.

CleanShot 2020-06-14 at 18.54.59

Is that strange? This is macOS and elixir -v returns

Erlang/OTP 23 [erts-11.0.2] [source] [64-bit] [smp:16:16] [ds:16:16:10] [async-threads:1] [hipe]

Elixir 1.10.3 (compiled with Erlang/OTP 23)

They two are installed with asdf.