Show git diff information in fringe. You can use this package only with GUI Emacs, not in a terminal Emacs. To use this package, add following code to your init.el or .emacs (require 'git-gutter-fringe) (global-git-gutter-mode t) ; If you want to show git diff information at right fringe (setq git-gutter-fr:side 'right-fringe)