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;;; ravi-init-vc.el --- vc control

;; Copyright (C) 2013

;; Author:  <ravi@nero.lan>
;; Keywords: vc

;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; Version control initialization

;;; Code:

(use-package vdiff
  :commands (vdiff-files
             vdiff-files3
             vdiff-buffers
             vdiff-buffers3
             vdiff-current-file
             vdiff-merge-conflict)
  :bind (:map vdiff-3way-mode-map
         ("M-r" . vdiff-hydra/body)
         :map vdiff-mode-map
         ("M-r" . vdiff-hydra/body)))

;; Git
(use-package magit
  :bind (("<M-f3>" . magit-status)
         ("C-c M-g" . magit-file-popup))
  :init
  (setq magit-define-global-key-bindings nil)
  :config
  (progn
    (setq-default
     magit-process-popup-time 10
     magit-diff-refine-hunk t
     magit-completing-read-function (if ravi/use-helm-instead-of-ido
                                        'helm--completing-read-default
                                      'magit-ido-completing-read))

    (setq magit-restore-window-configuration t)
    (add-hook 'magit-post-refresh-hook 'diff-hl-magit-post-refresh)

    (defvar ravi/sync-top-level-host-extra-args ""
      "Extra arguments to rsync for `ravi/sync-top-level'")

    (defun ravi/sync-top-level ()
      (when (and (boundp 'ravi/sync-top-level-host)
                 (not (s-equals? (car (s-split-up-to "\\." (system-name) 1))
                                 (car (s-split-up-to "\\." ravi/sync-top-level-host 1)))))
        (message "Synchronizing with %s" ravi/sync-top-level-host)
        (shell-command (concat "rsync -a " ravi/sync-top-level-host-extra-args
                               " " (magit-toplevel) " " ravi/sync-top-level-host ":" (magit-toplevel)))))
    (add-hook 'magit-post-refresh-hook 'ravi/sync-top-level)

    (use-package vdiff-magit
      :commands (vdiff-magit
                 vdiff-magit-dwim)
      :init
      (define-key magit-mode-map "e" 'vdiff-magit-dwim)
      (define-key magit-mode-map "E" 'vdiff-magit)
      (transient-suffix-put 'magit-dispatch "e" :description "vdiff (dwim)")
      (transient-suffix-put 'magit-dispatch "e" :command 'vdiff-magit-dwim)
      (transient-suffix-put 'magit-dispatch "E" :description "vdiff")
      (transient-suffix-put 'magit-dispatch "E" :command 'vdiff-magit))
    (use-package magit-svn
      :config (add-hook 'magit-mode-hook 'magit-svn-mode))
    )
  :ensure t)
(use-package gitignore-mode)
(use-package gitconfig-mode)
(use-package git-messenger
  :bind ("C-x v p" . git-messenger:popup-message))
(use-package git-timemachine
  :bind ("C-x v t" . git-timemachine))
(use-package vc-git
  :bind ("C-x v f" . vc-git-grep)
  :ensure nil)

(use-package diff-hl
  :config
  (global-diff-hl-mode))

;; Stolen almost entirely from Fuco (Matus Goljer)
(use-package ediff
  :config
  (progn
    (defvar my-ediff-before-config nil "Window configuration before ediff.")
    (defvar my-ediff-after-config nil "Window configuration after ediff.")

    (defun my-ediff-before-setup ()
      "Function to be called before any buffers or window setup for
    ediff."
      (setq my-ediff-before-config (current-window-configuration))
      (set-register ?b (list my-ediff-before-config (point-marker))))

    (defun my-ediff-after-setup ()
      "Function to be called after buffers and window setup for ediff."
      (setq my-ediff-after-config (current-window-configuration))
      (set-register ?e (list my-ediff-after-config (point-marker))))

    (defun my-ediff-quit ()
      "Function to be called when ediff quits."
      (when my-ediff-before-config
        (set-window-configuration my-ediff-before-config))
      ;; clean up ediff bullshit
      (->> (buffer-list)
        (-map 'buffer-name)
        (--select (string-match-p "\\*[Ee]diff" it))
        (-map 'kill-buffer)))

    (add-hook 'ediff-before-setup-hook 'my-ediff-before-setup)
    (add-hook 'ediff-after-setup-windows-hook 'my-ediff-after-setup 'append)
    (add-hook 'ediff-quit-hook 'my-ediff-quit)))

(provide 'ravi-init-vc)
;;; ravi-init-vc.el ends here