Customize ediff-mode used by magit

modules/siren-ediff.el

@@ -0,0 +1,25 @@
+;;; siren-ediff.el --- jimeh's Emacs Siren: ediff configuration.
+
+;;; Commentary:
+
+;; Basic configuration for ediff.
+
+;;; Code:
+
+(defun ediff-copy-both-to-C ()
+  "Copy both A and B variants to C."
+  (interactive)
+  (ediff-copy-diff
+   ediff-current-difference nil 'C nil
+   (concat
+    (ediff-get-region-contents ediff-current-difference 'A ediff-control-buffer)
+    (ediff-get-region-contents ediff-current-difference 'B ediff-control-buffer))))
+
+(defun add-B-to-ediff-mode-map ()
+  "Assign B key to copy both A and B variants to C."
+  (define-key ediff-mode-map "B" 'ediff-copy-both-to-C))
+
+(add-hook 'ediff-keymap-setup-hook 'add-B-to-ediff-mode-map)
+
+(provide 'siren-ediff)
+;;; siren-ediff.el ends here

modules/siren-magit.el

@@ -9,6 +9,7 @@
 (siren-require-packages '(magit))
 
 (require 'siren-fci)
+(require 'siren-ediff)
 (require 'magit)
 
 (setq magit-completing-read-function 'magit-ido-completing-read)
@@ -24,9 +25,6 @@
 (setq magit-display-buffer-function
       'magit-display-buffer-same-window-except-diff-v1)
 
-(global-set-key (kbd "C-x g") 'magit-status)
-(defalias 'bl 'magit-blame)
-
 ;; Configure magit-mode
 (defun siren-magit-mode-defaults ()
   ;; (linum-mode t) ;; Causes magit to freeze sometimes
@@ -50,5 +48,12 @@
 (add-hook 'git-commit-mode-hook (lambda ()
                                   (run-hooks 'siren-git-commit-mode-hook)))
 
+;; Keybindings
+(global-set-key (kbd "C-x g") 'magit-status)
+
+;; Aliases
+(defalias 'bl 'magit-blame)
+
+
 (provide 'siren-magit)
 ;;; siren-magit.el ends here