I've been using fzf¹ for a while now and I really like it. I have disabled some of the default overrides like replacing C-t since I actually use the transpose command some times.

To fix this, you can revert back the fzf overrides like this,

# Replace bindkey that FZF sets for C-t
bindkey '^t' transpose-chars
# Replace bindkey that FZF sets for M-c
bindkey '\ec' capitalize-word

Though the tool works reasonably well, I wonder if the same could be accomplished using GNU Emacs and Helm, but launching it in a separate tmux pane instead.