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

post_upgrade() {
  printf "%b\n" "$fzfup"
}

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

Add the following to your shell config:

    . /etc/profile.d/fzf-extras.bash # when bash
    . /etc/profile.d/fzf-extras.zsh # when zsh
EOF

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

Bash Users: Potentially Breaking Update (2015-05-09)
----------------------------------------------------

To ensure zsh compatibility, Bash keybindings are now
installed to:

    /etc/profile.d/fzf-extras.bash

Formerly, Bash keybindings were installed as:

    /etc/profile.d/fzf-extras.sh

Bash users' config may be broken by this update if bashrc sources
/etc/profile.d/fzf-extra.sh, as that file is now absent. Consult with
your local config.
EOF