post_install() {
  printf "%b\n" "$fzfin"
}

read -d '' fzfin <<'EOF'
fzf-extras
==========

To source fzf-extras, add the following to your shell config:

    # when bash
    . /usr/share/fzf/fzf-extras.bash
    # when zsh
    . /usr/share/fzf/fzf-extras.zsh
EOF