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Can also do cool stuff like search for a file to open in $EDITOR and searching git log

I end up installing mcfly (https://github.com/cantino/mcfly) in all my shells, and it works great in fish as well.

There's also fzf.fish, the only plugin I use.

Same. A shell without fzf now feels weird.

you just push ctrl-r just like in zsh

type something, press arrow up

Good luck with that if what you’re looking for is in the middle of the command, though

Fish will match the string even so.

I can search for just an argument and it finds the whole command fine

Fish explicitly handles that case