And you can hook in fzf to it to get a proper list of previous commands all fuzzy matched!! Oh-my-zsh just requires adding fzf to your plugins list (:

I survived for years with just https://github.com/zsh-users/zsh-autosuggestions which is similarly great, but fills a slightly different role. Just start typing and you'll see a faded preview of the most recent command matching & u ctrl+f to autocomplete it. Is gr8

e: clarified what zsh-autosuggest does