> Bells ringing, chiming, or (as is appropriate for the season) jingling all sounds very noisy - but although you can configure your terminal emulator to emit a sound for the terminal bell, I'm actually advocating for configuring a non-intrusive but persistent visual notification.

So, not a bell (remember that noisy awfulness whenever you held backspace for a bit too long and it spammed useless warnings that there is nothing to delete)

> makes it easy to configure behaviour based on the duration of a command and

Glad the article was edited, it's indeed way more reasonable than having the mental overhead to add ;bell every time (though notifications have a benefit that you can add a payload that tells you which command finished and how long it took without having to switch back)