post_install () { cat << EOF ==> Add this code to your .emacs file to use the mode: (require 'buffer-move) ==> Bind the functions as you please: (global-set-key (kbd "") 'buf-move-up) (global-set-key (kbd "") 'buf-move-down) (global-set-key (kbd "") 'buf-move-left) (global-set-key (kbd "") 'buf-move-right) ==> Or do the above with use-package: (use-package buffer-move :bind ("C-S-" . buf-move-up) ("C-S-" . buf-move-down) ("C-S-" . buf-move-left) ("C-S-" . buf-move-right)) EOF } post_upgrade () { post_install $1 }