__fzfcmd() {
  [ ${FZF_TMUX:-1} -eq 1 ] && echo "fzf-tmux -d${FZF_TMUX_HEIGHT:-40%}" || echo "fzf"
}

local selected restore_no_bang_hist
if selected=$(fc -l 1 | $(__fzfcmd) +s --tac +m -n2..,.. --tiebreak=index --toggle-sort=ctrl-r -q "$LBUFFER"); then
    num=$(echo "$selected" | head -n1 | awk '{print $1}' | sed 's/[^0-9]//g')
    if [ -n "$num" ]; then
        LBUFFER=!$num
        if setopt | grep nobanghist > /dev/null; then
            restore_no_bang_hist=1
            unsetopt no_bang_hist
        fi
        zle expand-history
        [ -n "$restore_no_bang_hist" ] && setopt no_bang_hist
    fi
fi
zle redisplay