An executable cookbook, on how to (ab)use emacse's display engine. Feel free to add sections, or suggest improvements.
You can add the following snippet to your .emacs. It will download and install the latest version of magic-buffer on its firsts run.
(defun magic-buffer () (interactive) (let (( file-name (concat temporary-file-directory "magic-buffer.el")) ( try-downloading (lambda () (url-copy-file "https://raw.githubusercontent.com/sabof/magic-buffer/master/magic-buffer.el" file-name t) (require 'magic-buffer file-name)))) (condition-case nil (funcall try-downloading) (error (funcall try-downloading)))) (magic-buffer))