I basically copied the ctrl-r mechanism in bash, instead of searching history, it pastes in a generated command based on then command I selected with fzf.
The commands form a trie:
http://git.jb55.com/citadel/file/dotfiles/commands.html
So i type “ctrl-f”, which launches fzf on this file with an initial search of “^”. then type a sequence of characters so that I can execute these commands as muscle memory.