Zsh history-search-backward widget, for fzf

fzf-history-search-backward

# https://gist.github.com/jeebak/e13c209da18ef5981792
# Derived from fzf-history-widget() that's provided by:
#
# https://github.com/junegunn/fzf

fzf-history-search-backward() {
  local buffer="$BUFFER"
  buffer="${buffer#"${buffer%%[![:space:]]*}"}"
  buffer="${buffer%"${buffer##*[![:space:]]}"}"
  # http://unix.stackexchange.com/a/11941
  LBUFFER=$(fc -l 1 | sed "s/ *[0-9*]* *//" | awk '!seen[$0]++' | grep "^$buffer" | fzf +s +m -n2..,..)
  zle redisplay
}

zle     -N    fzf-history-search-backward
bindkey '\ep' fzf-history-search-backward