Thanks a lot for you feedback, if you use tmux, interacting with fzf is easy as you can run fzf-tmux, that will open a tmux pan for fzf to run in.

There is an example script for that in https://github.com/mawww/kakoune/issues/383

Its more tricky if you do not use tmux, as due to Kakoune client/server nature, fzf will be launched by the server, which might not even have a terminal. That said I really enjoy fuzzy matching, and most built-in completions do fuzzy matching already.

Thanks again for giving feedback on your experience with Kakoune, always much appreciated !