setup-magit.el

;; full screen magit-status

(defadvice magit-status (around magit-fullscreen activate)
  (window-configuration-to-register :magit-fullscreen)
  ad-do-it
  (delete-other-windows))

(defun magit-exit-commit-mode ()
  (interactive)
  (kill-buffer)
  (delete-window))
(eval-after-load "git-commit-mode"
  '(define-key git-commit-mode-map (kbd "C-c C-k") 'magit-exit-commit-mode))

(defun magit-quit-session ()
  "Restores the previous window configuration and kills the magit buffer"
  (interactive)
  (kill-buffer)
  (jump-to-register :magit-fullscreen))

(define-key magit-status-mode-map (kbd "q") 'magit-quit-session)

;; C-c C-a to amend without any prompt
(defun magit-just-amend ()
  (interactive)
  (save-window-excursion
    (magit-with-refresh
      (shell-command "git --no-pager commit --amend --reuse-message=HEAD"))))
(eval-after-load "magit"
  '(define-key magit-status-mode-map (kbd "C-c C-a") 'magit-just-amend))

;; This code makes magit-status run alone in the frame, and then
;; restores the old window configuration when you quit out of magit.
;; No more juggling windows after commiting.

(defun magit-toggle-whitespace ()
  (interactive)
  (if (member "-w" magit-diff-options)
      (magit-dont-ignore-whitespace)
    (magit-ignore-whitespace)))

(defun magit-ignore-whitespace ()
  (interactive)
  (add-to-list 'magit-diff-options "-w")
  (magit-refresh))

(defun magit-dont-ignore-whitespace ()
  (interactive)
  (setq magit-diff-options (remove "-w" magit-diff-options))
  (magit-refresh))

(define-key magit-status-mode-map (kbd "W") 'magit-toggle-whitespace)