[CaptainMarvel]

It certainly does A history search. For “really useful”, I would suggest replacing it with the fzf integration. McFly could perhaps be even better.

[notfish]

True, but this works in a completely uncustomized shell which is pretty nice - I can hop on a coworkers keyboard or a machine without my .bashrc and it just works. It mostly just replaces spamming the up arrow to find commands I already ran.