Merge from emacs-23
[bpt/emacs.git] / lisp / vc / static / git-logo.png
diff --git a/lisp/vc-git.el b/lisp/vc-git.el
deleted file mode 100644 (file)
index b9b63ce..0000000
+++ /dev/null
@@ -1,1039 +0,0 @@
-;;; vc-git.el --- VC backend for the git version control system
-
-;; Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
-
-;; Author: Alexandre Julliard <julliard@winehq.org>
-;; Keywords: tools
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs 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.
-
-;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; This file contains a VC backend for the git version control
-;; system.
-;;
-
-;;; Installation:
-
-;; To install: put this file on the load-path and add Git to the list
-;; of supported backends in `vc-handled-backends'; the following line,
-;; placed in your ~/.emacs, will accomplish this:
-;;
-;;     (add-to-list 'vc-handled-backends 'Git)
-
-;;; Todo:
-;;  - check if more functions could use vc-git-command instead
-;;     of start-process.
-;;  - changelog generation
-
-;; Implement the rest of the vc interface. See the comment at the
-;; beginning of vc.el. The current status is:
-;; ("??" means: "figure out what to do about it")
-;;
-;; FUNCTION NAME                                   STATUS
-;; BACKEND PROPERTIES
-;; * revision-granularity                          OK
-;; STATE-QUERYING FUNCTIONS
-;; * registered (file)                             OK
-;; * state (file)                                  OK
-;; - state-heuristic (file)                        NOT NEEDED
-;; * working-revision (file)                       OK
-;; - latest-on-branch-p (file)                     NOT NEEDED
-;; * checkout-model (files)                        OK
-;; - workfile-unchanged-p (file)                   OK
-;; - mode-line-string (file)                       OK
-;; STATE-CHANGING FUNCTIONS
-;; * create-repo ()                                OK
-;; * register (files &optional rev comment)        OK
-;; - init-revision (file)                          NOT NEEDED
-;; - responsible-p (file)                          OK
-;; - could-register (file)                         NOT NEEDED, DEFAULT IS GOOD
-;; - receive-file (file rev)                       NOT NEEDED
-;; - unregister (file)                             OK
-;; * checkin (files rev comment)                   OK
-;; * find-revision (file rev buffer)               OK
-;; * checkout (file &optional editable rev)        OK
-;; * revert (file &optional contents-done)         OK
-;; - rollback (files)                              COULD BE SUPPORTED
-;; - merge (file rev1 rev2)                   It would be possible to merge
-;;                                          changes into a single file, but
-;;                                          when committing they wouldn't
-;;                                          be identified as a merge
-;;                                          by git, so it's probably
-;;                                          not a good idea.
-;; - merge-news (file)                     see `merge'
-;; - steal-lock (file &optional revision)          NOT NEEDED
-;; HISTORY FUNCTIONS
-;; * print-log (files buffer &optional shortlog start-revision limit)   OK
-;; - log-view-mode ()                              OK
-;; - show-log-entry (revision)                     OK
-;; - comment-history (file)                        ??
-;; - update-changelog (files)                      COULD BE SUPPORTED
-;; * diff (file &optional rev1 rev2 buffer)        OK
-;; - revision-completion-table (files)             OK
-;; - annotate-command (file buf &optional rev)     OK
-;; - annotate-time ()                              OK
-;; - annotate-current-time ()                      NOT NEEDED
-;; - annotate-extract-revision-at-line ()          OK
-;; TAG SYSTEM
-;; - create-tag (dir name branchp)                 OK
-;; - retrieve-tag (dir name update)                OK
-;; MISCELLANEOUS
-;; - make-version-backups-p (file)                 NOT NEEDED
-;; - repository-hostname (dirname)                 NOT NEEDED
-;; - previous-revision (file rev)                  OK
-;; - next-revision (file rev)                      OK
-;; - check-headers ()                              COULD BE SUPPORTED
-;; - clear-headers ()                              NOT NEEDED
-;; - delete-file (file)                            OK
-;; - rename-file (old new)                         OK
-;; - find-file-hook ()                             NOT NEEDED
-
-(eval-when-compile
-  (require 'cl)
-  (require 'vc)
-  (require 'vc-dir)
-  (require 'grep))
-
-(defcustom vc-git-diff-switches t
-  "String or list of strings specifying switches for Git diff under VC.
-If nil, use the value of `vc-diff-switches'.  If t, use no switches."
-  :type '(choice (const :tag "Unspecified" nil)
-                (const :tag "None" t)
-                (string :tag "Argument String")
-                (repeat :tag "Argument List" :value ("") string))
-  :version "23.1"
-  :group 'vc)
-
-(defvar vc-git-commits-coding-system 'utf-8
-  "Default coding system for git commits.")
-
-;;; BACKEND PROPERTIES
-
-(defun vc-git-revision-granularity () 'repository)
-(defun vc-git-checkout-model (files) 'implicit)
-
-;;; STATE-QUERYING FUNCTIONS
-
-;;;###autoload (defun vc-git-registered (file)
-;;;###autoload   "Return non-nil if FILE is registered with git."
-;;;###autoload   (if (vc-find-root file ".git")       ; Short cut.
-;;;###autoload       (progn
-;;;###autoload         (load "vc-git")
-;;;###autoload         (vc-git-registered file))))
-
-(defun vc-git-registered (file)
-  "Check whether FILE is registered with git."
-  (let ((dir (vc-git-root file)))
-    (when dir
-      (with-temp-buffer
-       (let* (process-file-side-effects
-              ;; Do not use the `file-name-directory' here: git-ls-files
-              ;; sometimes fails to return the correct status for relative
-              ;; path specs.
-              ;; See also: http://marc.info/?l=git&m=125787684318129&w=2
-              (name (file-relative-name file dir))
-              (str (ignore-errors
-                    (cd dir)
-                    (vc-git--out-ok "ls-files" "-c" "-z" "--" name)
-                    ;; If result is empty, use ls-tree to check for deleted
-                     ;; file.
-                    (when (eq (point-min) (point-max))
-                      (vc-git--out-ok "ls-tree" "--name-only" "-z" "HEAD"
-                                       "--" name))
-                    (buffer-string))))
-         (and str
-              (> (length str) (length name))
-              (string= (substring str 0 (1+ (length name)))
-                       (concat name "\0"))))))))
-
-(defun vc-git--state-code (code)
-  "Convert from a string to a added/deleted/modified state."
-  (case (string-to-char code)
-    (?M 'edited)
-    (?A 'added)
-    (?D 'removed)
-    (?U 'edited)     ;; FIXME
-    (?T 'edited)))   ;; FIXME
-
-(defun vc-git-state (file)
-  "Git-specific version of `vc-state'."
-  ;; FIXME: This can't set 'ignored or 'conflict yet
-  ;; The 'ignored state could be detected with `git ls-files -i -o
-  ;; --exclude-standard` It also can't set 'needs-update or
-  ;; 'needs-merge. The rough equivalent would be that upstream branch
-  ;; for current branch is in fast-forward state i.e. current branch
-  ;; is direct ancestor of corresponding upstream branch, and the file
-  ;; was modified upstream.  But we can't check that without a network
-  ;; operation.
-  (if (not (vc-git-registered file))
-      'unregistered
-    (vc-git--call nil "add" "--refresh" "--" (file-relative-name file))
-    (let ((diff (vc-git--run-command-string
-                 file "diff-index" "-z" "HEAD" "--")))
-      (if (and diff (string-match ":[0-7]\\{6\\} [0-7]\\{6\\} [0-9a-f]\\{40\\} [0-9a-f]\\{40\\} \\([ADMUT]\\)\0[^\0]+\0"
-                                 diff))
-         (vc-git--state-code (match-string 1 diff))
-       (if (vc-git--empty-db-p) 'added 'up-to-date)))))
-
-(defun vc-git-working-revision (file)
-  "Git-specific version of `vc-working-revision'."
-  (let* (process-file-side-effects
-        (str (with-output-to-string
-               (with-current-buffer standard-output
-                 (vc-git--out-ok "symbolic-ref" "HEAD")))))
-    (if (string-match "^\\(refs/heads/\\)?\\(.+\\)$" str)
-        (match-string 2 str)
-      str)))
-
-(defun vc-git-workfile-unchanged-p (file)
-  (eq 'up-to-date (vc-git-state file)))
-
-(defun vc-git-mode-line-string (file)
-  "Return string for placement into the modeline for FILE."
-  (let* ((branch (vc-git-working-revision file))
-         (def-ml (vc-default-mode-line-string 'Git file))
-         (help-echo (get-text-property 0 'help-echo def-ml)))
-    (if (zerop (length branch))
-        (propertize
-         (concat def-ml "!")
-         'help-echo (concat help-echo "\nNo current branch (detached HEAD)"))
-      (propertize def-ml
-                  'help-echo (concat help-echo "\nCurrent branch: " branch)))))
-
-(defstruct (vc-git-extra-fileinfo
-            (:copier nil)
-            (:constructor vc-git-create-extra-fileinfo
-                          (old-perm new-perm &optional rename-state orig-name))
-            (:conc-name vc-git-extra-fileinfo->))
-  old-perm new-perm   ;; Permission flags.
-  rename-state        ;; Rename or copy state.
-  orig-name)          ;; Original name for renames or copies.
-
-(defun vc-git-escape-file-name (name)
-  "Escape a file name if necessary."
-  (if (string-match "[\n\t\"\\]" name)
-      (concat "\""
-              (mapconcat (lambda (c)
-                   (case c
-                     (?\n "\\n")
-                     (?\t "\\t")
-                     (?\\ "\\\\")
-                     (?\" "\\\"")
-                     (t (char-to-string c))))
-                 name "")
-              "\"")
-    name))
-
-(defun vc-git-file-type-as-string (old-perm new-perm)
-  "Return a string describing the file type based on its permissions."
-  (let* ((old-type (lsh (or old-perm 0) -9))
-        (new-type (lsh (or new-perm 0) -9))
-        (str (case new-type
-               (?\100  ;; File.
-                (case old-type
-                  (?\100 nil)
-                  (?\120 "   (type change symlink -> file)")
-                  (?\160 "   (type change subproject -> file)")))
-                (?\120  ;; Symlink.
-                 (case old-type
-                   (?\100 "   (type change file -> symlink)")
-                   (?\160 "   (type change subproject -> symlink)")
-                   (t "   (symlink)")))
-                 (?\160  ;; Subproject.
-                  (case old-type
-                    (?\100 "   (type change file -> subproject)")
-                    (?\120 "   (type change symlink -> subproject)")
-                    (t "   (subproject)")))
-                  (?\110 nil)  ;; Directory (internal, not a real git state).
-                 (?\000  ;; Deleted or unknown.
-                  (case old-type
-                    (?\120 "   (symlink)")
-                    (?\160 "   (subproject)")))
-                 (t (format "   (unknown type %o)" new-type)))))
-    (cond (str (propertize str 'face 'font-lock-comment-face))
-          ((eq new-type ?\110) "/")
-          (t ""))))
-
-(defun vc-git-rename-as-string (state extra)
-  "Return a string describing the copy or rename associated with INFO,
-or an empty string if none."
-  (let ((rename-state (when extra
-                       (vc-git-extra-fileinfo->rename-state extra))))
-    (if rename-state
-        (propertize
-         (concat "   ("
-                 (if (eq rename-state 'copy) "copied from "
-                   (if (eq state 'added) "renamed from "
-                     "renamed to "))
-                 (vc-git-escape-file-name
-                  (vc-git-extra-fileinfo->orig-name extra))
-                 ")")
-         'face 'font-lock-comment-face)
-      "")))
-
-(defun vc-git-permissions-as-string (old-perm new-perm)
-  "Format a permission change as string."
-  (propertize
-   (if (or (not old-perm)
-           (not new-perm)
-           (eq 0 (logand ?\111 (logxor old-perm new-perm))))
-       "  "
-     (if (eq 0 (logand ?\111 old-perm)) "+x" "-x"))
-  'face 'font-lock-type-face))
-
-(defun vc-git-dir-printer (info)
-  "Pretty-printer for the vc-dir-fileinfo structure."
-  (let* ((isdir (vc-dir-fileinfo->directory info))
-        (state (if isdir "" (vc-dir-fileinfo->state info)))
-         (extra (vc-dir-fileinfo->extra info))
-         (old-perm (when extra (vc-git-extra-fileinfo->old-perm extra)))
-         (new-perm (when extra (vc-git-extra-fileinfo->new-perm extra))))
-    (insert
-     "  "
-     (propertize (format "%c" (if (vc-dir-fileinfo->marked info) ?* ? ))
-                 'face 'font-lock-type-face)
-     "  "
-     (propertize
-      (format "%-12s" state)
-      'face (cond ((eq state 'up-to-date) 'font-lock-builtin-face)
-                 ((eq state 'missing) 'font-lock-warning-face)
-                 (t 'font-lock-variable-name-face))
-      'mouse-face 'highlight)
-     "  " (vc-git-permissions-as-string old-perm new-perm)
-     "    "
-     (propertize (vc-git-escape-file-name (vc-dir-fileinfo->name info))
-                 'face (if isdir 'font-lock-comment-delimiter-face
-                         'font-lock-function-name-face)
-                'help-echo
-                (if isdir
-                    "Directory\nVC operations can be applied to it\nmouse-3: Pop-up menu"
-                  "File\nmouse-3: Pop-up menu")
-                'keymap vc-dir-filename-mouse-map
-                'mouse-face 'highlight)
-     (vc-git-file-type-as-string old-perm new-perm)
-     (vc-git-rename-as-string state extra))))
-
-(defun vc-git-after-dir-status-stage (stage files update-function)
-  "Process sentinel for the various dir-status stages."
-  (let (next-stage result)
-    (goto-char (point-min))
-    (case stage
-      (update-index
-       (setq next-stage (if (vc-git--empty-db-p) 'ls-files-added
-                          (if files 'ls-files-up-to-date 'diff-index))))
-      (ls-files-added
-       (setq next-stage 'ls-files-unknown)
-       (while (re-search-forward "\\([0-7]\\{6\\}\\) [0-9a-f]\\{40\\} 0\t\\([^\0]+\\)\0" nil t)
-         (let ((new-perm (string-to-number (match-string 1) 8))
-               (name (match-string 2)))
-           (push (list name 'added (vc-git-create-extra-fileinfo 0 new-perm))
-                 result))))
-      (ls-files-up-to-date
-       (setq next-stage 'diff-index)
-       (while (re-search-forward "\\([0-7]\\{6\\}\\) [0-9a-f]\\{40\\} 0\t\\([^\0]+\\)\0" nil t)
-         (let ((perm (string-to-number (match-string 1) 8))
-               (name (match-string 2)))
-           (push (list name 'up-to-date
-                       (vc-git-create-extra-fileinfo perm perm))
-                 result))))
-      (ls-files-unknown
-       (when files (setq next-stage 'ls-files-ignored))
-       (while (re-search-forward "\\([^\0]*?\\)\0" nil t 1)
-         (push (list (match-string 1) 'unregistered
-                     (vc-git-create-extra-fileinfo 0 0))
-               result)))
-      (ls-files-ignored
-       (while (re-search-forward "\\([^\0]*?\\)\0" nil t 1)
-         (push (list (match-string 1) 'ignored
-                     (vc-git-create-extra-fileinfo 0 0))
-               result)))
-      (diff-index
-       (setq next-stage 'ls-files-unknown)
-       (while (re-search-forward
-               ":\\([0-7]\\{6\\}\\) \\([0-7]\\{6\\}\\) [0-9a-f]\\{40\\} [0-9a-f]\\{40\\} \\(\\([ADMUT]\\)\0\\([^\0]+\\)\\|\\([CR]\\)[0-9]*\0\\([^\0]+\\)\0\\([^\0]+\\)\\)\0"
-               nil t 1)
-         (let ((old-perm (string-to-number (match-string 1) 8))
-               (new-perm (string-to-number (match-string 2) 8))
-               (state (or (match-string 4) (match-string 6)))
-               (name (or (match-string 5) (match-string 7)))
-               (new-name (match-string 8)))
-           (if new-name  ; Copy or rename.
-               (if (eq ?C (string-to-char state))
-                   (push (list new-name 'added
-                               (vc-git-create-extra-fileinfo old-perm new-perm
-                                                             'copy name))
-                         result)
-                 (push (list name 'removed
-                             (vc-git-create-extra-fileinfo 0 0
-                                                           'rename new-name))
-                       result)
-                 (push (list new-name 'added
-                             (vc-git-create-extra-fileinfo old-perm new-perm
-                                                           'rename name))
-                       result))
-             (push (list name (vc-git--state-code state)
-                         (vc-git-create-extra-fileinfo old-perm new-perm))
-                   result))))))
-    (when result
-      (setq result (nreverse result))
-      (when files
-        (dolist (entry result) (setq files (delete (car entry) files)))
-        (unless files (setq next-stage nil))))
-    (when (or result (not next-stage))
-      (funcall update-function result next-stage))
-    (when next-stage
-      (vc-git-dir-status-goto-stage next-stage files update-function))))
-
-(defun vc-git-dir-status-goto-stage (stage files update-function)
-  (erase-buffer)
-  (case stage
-    (update-index
-     (if files
-         (vc-git-command (current-buffer) 'async files "add" "--refresh" "--")
-       (vc-git-command (current-buffer) 'async nil
-                       "update-index" "--refresh")))
-    (ls-files-added
-     (vc-git-command (current-buffer) 'async files
-                     "ls-files" "-z" "-c" "-s" "--"))
-    (ls-files-up-to-date
-     (vc-git-command (current-buffer) 'async files
-                     "ls-files" "-z" "-c" "-s" "--"))
-    (ls-files-unknown
-     (vc-git-command (current-buffer) 'async files
-                     "ls-files" "-z" "-o" "--directory"
-                     "--no-empty-directory" "--exclude-standard" "--"))
-    (ls-files-ignored
-     (vc-git-command (current-buffer) 'async files
-                     "ls-files" "-z" "-o" "-i" "--directory"
-                     "--no-empty-directory" "--exclude-standard" "--"))
-    ;; --relative added in Git 1.5.5.
-    (diff-index
-     (vc-git-command (current-buffer) 'async files
-                     "diff-index" "--relative" "-z" "-M" "HEAD" "--")))
-  (vc-exec-after
-   `(vc-git-after-dir-status-stage ',stage  ',files ',update-function)))
-
-(defun vc-git-dir-status (dir update-function)
-  "Return a list of (FILE STATE EXTRA) entries for DIR."
-  ;; Further things that would have to be fixed later:
-  ;; - how to handle unregistered directories
-  ;; - how to support vc-dir on a subdir of the project tree
-  (vc-git-dir-status-goto-stage 'update-index nil update-function))
-
-(defun vc-git-dir-status-files (dir files default-state update-function)
-  "Return a list of (FILE STATE EXTRA) entries for FILES in DIR."
-  (vc-git-dir-status-goto-stage 'update-index files update-function))
-
-(defvar vc-git-stash-map
-  (let ((map (make-sparse-keymap)))
-    ;; Turn off vc-dir marking
-    (define-key map [mouse-2] 'ignore)
-
-    (define-key map [down-mouse-3] 'vc-git-stash-menu)
-    (define-key map "\C-k" 'vc-git-stash-delete-at-point)
-    (define-key map "=" 'vc-git-stash-show-at-point)
-    (define-key map "\C-m" 'vc-git-stash-show-at-point)
-    (define-key map "A" 'vc-git-stash-apply-at-point)
-    (define-key map "P" 'vc-git-stash-pop-at-point)
-    (define-key map "S" 'vc-git-stash-snapshot)
-    map))
-
-(defvar vc-git-stash-menu-map
-  (let ((map (make-sparse-keymap "Git Stash")))
-    (define-key map [de]
-      '(menu-item "Delete stash" vc-git-stash-delete-at-point
-                 :help "Delete the current stash"))
-    (define-key map [ap]
-      '(menu-item "Apply stash" vc-git-stash-apply-at-point
-                 :help "Apply the current stash and keep it in the stash list"))
-    (define-key map [po]
-      '(menu-item "Apply and remove stash (pop)" vc-git-stash-pop-at-point
-                 :help "Apply the current stash and remove it"))
-    (define-key map [sh]
-      '(menu-item "Show stash" vc-git-stash-show-at-point
-                 :help "Show the contents of the current stash"))
-    map))
-
-(defun vc-git-dir-extra-headers (dir)
-  (let ((str (with-output-to-string
-               (with-current-buffer standard-output
-                 (vc-git--out-ok "symbolic-ref" "HEAD"))))
-       (stash (vc-git-stash-list))
-       (stash-help-echo "Use M-x vc-git-stash to create stashes.")
-       branch remote remote-url)
-    (if (string-match "^\\(refs/heads/\\)?\\(.+\\)$" str)
-       (progn
-         (setq branch (match-string 2 str))
-         (setq remote
-               (with-output-to-string
-                 (with-current-buffer standard-output
-                   (vc-git--out-ok "config"
-                                    (concat "branch." branch ".remote")))))
-         (when (string-match "\\([^\n]+\\)" remote)
-           (setq remote (match-string 1 remote)))
-         (when remote
-           (setq remote-url
-                 (with-output-to-string
-                   (with-current-buffer standard-output
-                     (vc-git--out-ok "config"
-                                      (concat "remote." remote ".url"))))))
-         (when (string-match "\\([^\n]+\\)" remote-url)
-           (setq remote-url (match-string 1 remote-url))))
-      (setq branch "not (detached HEAD)"))
-    ;; FIXME: maybe use a different face when nothing is stashed.
-    (concat
-     (propertize "Branch     : " 'face 'font-lock-type-face)
-     (propertize branch
-                'face 'font-lock-variable-name-face)
-     (when remote
-       (concat
-       "\n"
-       (propertize "Remote     : " 'face 'font-lock-type-face)
-       (propertize remote-url
-                   'face 'font-lock-variable-name-face)))
-     "\n"
-     (if stash
-       (concat
-       (propertize "Stash      :\n" 'face 'font-lock-type-face
-                   'help-echo stash-help-echo)
-       (mapconcat
-        (lambda (x)
-          (propertize x
-                      'face 'font-lock-variable-name-face
-                      'mouse-face 'highlight
-                      'help-echo "mouse-3: Show stash menu\nRET: Show stash\nA: Apply stash\nP: Apply and remove stash (pop)\nC-k: Delete stash"
-                      'keymap vc-git-stash-map))
-        stash "\n"))
-       (concat
-       (propertize "Stash      : " 'face 'font-lock-type-face
-                   'help-echo stash-help-echo)
-       (propertize "Nothing stashed"
-                   'help-echo stash-help-echo
-                   'face 'font-lock-variable-name-face))))))
-
-;;; STATE-CHANGING FUNCTIONS
-
-(defun vc-git-create-repo ()
-  "Create a new Git repository."
-  (vc-git-command nil 0 nil "init"))
-
-(defun vc-git-register (files &optional rev comment)
-  "Register FILES into the git version-control system."
-  (let (flist dlist)
-    (dolist (crt files)
-      (if (file-directory-p crt)
-         (push crt dlist)
-       (push crt flist)))
-    (when flist
-      (vc-git-command nil 0 flist "update-index" "--add" "--"))
-    (when dlist
-      (vc-git-command nil 0 dlist "add"))))
-
-(defalias 'vc-git-responsible-p 'vc-git-root)
-
-(defun vc-git-unregister (file)
-  (vc-git-command nil 0 file "rm" "-f" "--cached" "--"))
-
-(declare-function log-edit-extract-headers "log-edit" (headers string))
-
-(defun vc-git-checkin (files rev comment)
-  (let ((coding-system-for-write vc-git-commits-coding-system))
-    (apply 'vc-git-command nil 0 files
-          (nconc (list "commit" "-m")
-                  (log-edit-extract-headers '(("Author" . "--author")
-                                             ("Date" . "--date"))
-                                            comment)
-                  (list "--only" "--")))))
-
-(defun vc-git-find-revision (file rev buffer)
-  (let* (process-file-side-effects
-        (coding-system-for-read 'binary)
-        (coding-system-for-write 'binary)
-        (fullname
-         (let ((fn (vc-git--run-command-string
-                    file "ls-files" "-z" "--full-name" "--")))
-           ;; ls-files does not return anything when looking for a
-           ;; revision of a file that has been renamed or removed.
-           (if (string= fn "")
-               (file-relative-name file (vc-git-root default-directory))
-             (substring fn 0 -1)))))
-    (vc-git-command
-     buffer 0
-     nil
-     "cat-file" "blob" (concat (if rev rev "HEAD") ":" fullname))))
-
-(defun vc-git-checkout (file &optional editable rev)
-  (vc-git-command nil 0 file "checkout" (or rev "HEAD")))
-
-(defun vc-git-revert (file &optional contents-done)
-  "Revert FILE to the version stored in the git repository."
-  (if contents-done
-      (vc-git-command nil 0 file "update-index" "--")
-    (vc-git-command nil 0 file "reset" "-q" "--")
-    (vc-git-command nil nil file "checkout" "-q" "--")))
-
-;;; HISTORY FUNCTIONS
-
-(defun vc-git-print-log (files buffer &optional shortlog start-revision limit)
-  "Get change log associated with FILES.
-Note that using SHORTLOG requires at least Git version 1.5.6,
-for the --graph option."
-  (let ((coding-system-for-read vc-git-commits-coding-system))
-    ;; `vc-do-command' creates the buffer, but we need it before running
-    ;; the command.
-    (vc-setup-buffer buffer)
-    ;; If the buffer exists from a previous invocation it might be
-    ;; read-only.
-    (let ((inhibit-read-only t))
-      (with-current-buffer
-          buffer
-       (apply 'vc-git-command buffer
-              'async files
-              (append
-               '("log" "--no-color")
-               (when shortlog
-                 '("--graph" "--decorate" "--date=short"
-                    "--pretty=tformat:%d%h  %ad  %s" "--abbrev-commit"))
-               (when limit (list "-n" (format "%s" limit)))
-               (when start-revision (list start-revision))
-               '("--")))))))
-
-(defun vc-git-log-outgoing (buffer remote-location)
-  (interactive)
-  (vc-git-command
-   buffer 0 nil
-   "log"
-   "--no-color" "--graph" "--decorate" "--date=short"
-   "--pretty=tformat:%d%h  %ad  %s" "--abbrev-commit"
-   (concat (if (string= remote-location "")
-              "@{upstream}"
-            remote-location)
-          "..HEAD")))
-
-(defun vc-git-log-incoming (buffer remote-location)
-  (interactive)
-  (vc-git-command nil 0 nil "fetch")
-  (vc-git-command
-   buffer 0 nil
-   "log"
-   "--no-color" "--graph" "--decorate" "--date=short"
-   "--pretty=tformat:%d%h  %ad  %s" "--abbrev-commit"
-   (concat "HEAD.." (if (string= remote-location "")
-                       "@{upstream}"
-                     remote-location))))
-
-(defvar log-view-message-re)
-(defvar log-view-file-re)
-(defvar log-view-font-lock-keywords)
-(defvar log-view-per-file-logs)
-
-(define-derived-mode vc-git-log-view-mode log-view-mode "Git-Log-View"
-  (require 'add-log) ;; We need the faces add-log.
-  ;; Don't have file markers, so use impossible regexp.
-  (set (make-local-variable 'log-view-file-re) "\\`a\\`")
-  (set (make-local-variable 'log-view-per-file-logs) nil)
-  (set (make-local-variable 'log-view-message-re)
-       (if (not (eq vc-log-view-type 'long))
-          "^\\(?:[*/\\| ]+ \\)?\\(?: ([^)]+)\\)?\\([0-9a-z]+\\)  \\([-a-z0-9]+\\)  \\(.*\\)"
-        "^commit *\\([0-9a-z]+\\)"))
-  (set (make-local-variable 'log-view-font-lock-keywords)
-       (if (not (eq vc-log-view-type 'long))
-          '(
-            ;; Same as log-view-message-re, except that we don't
-            ;; want the shy group for the tag name.
-            ("^\\(?:[*/\\| ]+ \\)?\\( ([^)]+)\\)?\\([0-9a-z]+\\)  \\([-a-z0-9]+\\)  \\(.*\\)"
-             (1 'highlight nil lax)
-             (2 'change-log-acknowledgement)
-             (3 'change-log-date)))
-       (append
-        `((,log-view-message-re (1 'change-log-acknowledgement)))
-        ;; Handle the case:
-        ;; user: foo@bar
-        '(("^Author:[ \t]+\\([A-Za-z0-9_.+-]+@[A-Za-z0-9_.-]+\\)"
-           (1 'change-log-email))
-          ;; Handle the case:
-          ;; user: FirstName LastName <foo@bar>
-          ("^Author:[ \t]+\\([^<(]+?\\)[ \t]*[(<]\\([A-Za-z0-9_.+-]+@[A-Za-z0-9_.-]+\\)[>)]"
-           (1 'change-log-name)
-           (2 'change-log-email))
-          ("^ +\\(?:\\(?:[Aa]cked\\|[Ss]igned-[Oo]ff\\)-[Bb]y:\\)[ \t]+\\([A-Za-z0-9_.+-]+@[A-Za-z0-9_.-]+\\)"
-           (1 'change-log-name))
-          ("^ +\\(?:\\(?:[Aa]cked\\|[Ss]igned-[Oo]ff\\)-[Bb]y:\\)[ \t]+\\([^<(]+?\\)[ \t]*[(<]\\([A-Za-z0-9_.+-]+@[A-Za-z0-9_.-]+\\)[>)]"
-           (1 'change-log-name)
-           (2 'change-log-email))
-          ("^Merge: \\([0-9a-z]+\\) \\([0-9a-z]+\\)"
-           (1 'change-log-acknowledgement)
-           (2 'change-log-acknowledgement))
-          ("^Date:   \\(.+\\)" (1 'change-log-date))
-           ("^summary:[ \t]+\\(.+\\)" (1 'log-view-message)))))))
-
-
-(defun vc-git-show-log-entry (revision)
-  "Move to the log entry for REVISION.
-REVISION may have the form BRANCH, BRANCH~N,
-or BRANCH^ (where \"^\" can be repeated)."
-  (goto-char (point-min))
-  (prog1
-      (when revision
-        (search-forward
-         (format "\ncommit %s" revision) nil t
-         (cond ((string-match "~\\([0-9]\\)\\'" revision)
-                (1+ (string-to-number (match-string 1 revision))))
-               ((string-match "\\^+\\'" revision)
-                (1+ (length (match-string 0 revision))))
-               (t nil))))
-    (beginning-of-line)))
-
-(defun vc-git-diff (files &optional rev1 rev2 buffer)
-  "Get a difference report using Git between two revisions of FILES."
-  (let (process-file-side-effects)
-    (apply #'vc-git-command (or buffer "*vc-diff*") 1 files
-          (if (and rev1 rev2) "diff-tree" "diff-index")
-          "--exit-code"
-          (append (vc-switches 'git 'diff)
-                  (list "-p" (or rev1 "HEAD") rev2 "--")))))
-
-(defun vc-git-revision-table (files)
-  ;; What about `files'?!?  --Stef
-  (let (process-file-side-effects
-       (table (list "HEAD")))
-    (with-temp-buffer
-      (vc-git-command t nil nil "for-each-ref" "--format=%(refname)")
-      (goto-char (point-min))
-      (while (re-search-forward "^refs/\\(heads\\|tags\\|remotes\\)/\\(.*\\)$"
-                                nil t)
-        (push (match-string 2) table)))
-    table))
-
-(defun vc-git-revision-completion-table (files)
-  (lexical-let ((files files)
-                table)
-    (setq table (lazy-completion-table
-                 table (lambda () (vc-git-revision-table files))))
-    table))
-
-(defun vc-git-annotate-command (file buf &optional rev)
-  (let ((name (file-relative-name file)))
-    (vc-git-command buf 'async nil "blame" "--date=iso" "-C" "-C" rev "--" name)))
-
-(declare-function vc-annotate-convert-time "vc-annotate" (time))
-
-(defun vc-git-annotate-time ()
-  (and (re-search-forward "[0-9a-f]+[^()]+(.* \\([0-9]+\\)-\\([0-9]+\\)-\\([0-9]+\\) \\([0-9]+\\):\\([0-9]+\\):\\([0-9]+\\) \\([-+0-9]+\\) +[0-9]+) " nil t)
-       (vc-annotate-convert-time
-        (apply #'encode-time (mapcar (lambda (match)
-                                       (string-to-number (match-string match)))
-                                     '(6 5 4 3 2 1 7))))))
-
-(defun vc-git-annotate-extract-revision-at-line ()
-  (save-excursion
-    (move-beginning-of-line 1)
-    (when (looking-at "\\([0-9a-f^][0-9a-f]+\\) \\(\\([^(]+\\) \\)?")
-      (let ((revision (match-string-no-properties 1)))
-       (if (match-beginning 2)
-           (let ((fname (match-string-no-properties 3)))
-             ;; Remove trailing whitespace from the file name.
-             (when (string-match " +\\'" fname)
-               (setq fname (substring fname 0 (match-beginning 0))))
-             (cons revision
-                   (expand-file-name fname (vc-git-root default-directory))))
-         revision)))))
-
-;;; TAG SYSTEM
-
-(defun vc-git-create-tag (dir name branchp)
-  (let ((default-directory dir))
-    (and (vc-git-command nil 0 nil "update-index" "--refresh")
-         (if branchp
-             (vc-git-command nil 0 nil "checkout" "-b" name)
-           (vc-git-command nil 0 nil "tag" name)))))
-
-(defun vc-git-retrieve-tag (dir name update)
-  (let ((default-directory dir))
-    (vc-git-command nil 0 nil "checkout" name)
-    ;; FIXME: update buffers if `update' is true
-    ))
-
-
-;;; MISCELLANEOUS
-
-(defun vc-git-previous-revision (file rev)
-  "Git-specific version of `vc-previous-revision'."
-  (if file
-      (let* ((fname (file-relative-name file))
-             (prev-rev (with-temp-buffer
-                         (and
-                          (vc-git--out-ok "rev-list" "-2" rev "--" fname)
-                          (goto-char (point-max))
-                          (bolp)
-                          (zerop (forward-line -1))
-                          (not (bobp))
-                          (buffer-substring-no-properties
-                           (point)
-                           (1- (point-max)))))))
-        (or (vc-git-symbolic-commit prev-rev) prev-rev))
-    (with-temp-buffer
-      (and
-       (vc-git--out-ok "rev-parse" (concat rev "^"))
-       (buffer-substring-no-properties (point-min) (+ (point-min) 40))))))
-
-(defun vc-git-next-revision (file rev)
-  "Git-specific version of `vc-next-revision'."
-  (let* ((default-directory (file-name-directory
-                            (expand-file-name file)))
-         (file (file-name-nondirectory file))
-         (current-rev
-          (with-temp-buffer
-            (and
-             (vc-git--out-ok "rev-list" "-1" rev "--" file)
-             (goto-char (point-max))
-             (bolp)
-             (zerop (forward-line -1))
-             (bobp)
-             (buffer-substring-no-properties
-              (point)
-              (1- (point-max))))))
-         (next-rev
-          (and current-rev
-               (with-temp-buffer
-                 (and
-                  (vc-git--out-ok "rev-list" "HEAD" "--" file)
-                  (goto-char (point-min))
-                  (search-forward current-rev nil t)
-                  (zerop (forward-line -1))
-                  (buffer-substring-no-properties
-                   (point)
-                   (progn (forward-line 1) (1- (point)))))))))
-    (or (vc-git-symbolic-commit next-rev) next-rev)))
-
-(defun vc-git-delete-file (file)
-  (vc-git-command nil 0 file "rm" "-f" "--"))
-
-(defun vc-git-rename-file (old new)
-  (vc-git-command nil 0 (list old new) "mv" "-f" "--"))
-
-(defvar vc-git-extra-menu-map
-  (let ((map (make-sparse-keymap)))
-    (define-key map [git-grep]
-      '(menu-item "Git grep..." vc-git-grep
-                 :help "Run the `git grep' command"))
-    (define-key map [git-sn]
-      '(menu-item "Stash a snapshot" vc-git-stash-snapshot
-                 :help "Stash the current state of the tree and keep the current state"))
-    (define-key map [git-st]
-      '(menu-item "Create Stash..." vc-git-stash
-                 :help "Stash away changes"))
-    (define-key map [git-ss]
-      '(menu-item "Show Stash..." vc-git-stash-show
-                 :help "Show stash contents"))
-    map))
-
-(defun vc-git-extra-menu () vc-git-extra-menu-map)
-
-(defun vc-git-extra-status-menu () vc-git-extra-menu-map)
-
-(defun vc-git-root (file)
-  (vc-find-root file ".git"))
-
-;; Derived from `lgrep'.
-(defun vc-git-grep (regexp &optional files dir)
-  "Run git grep, searching for REGEXP in FILES in directory DIR.
-The search is limited to file names matching shell pattern FILES.
-FILES may use abbreviations defined in `grep-files-aliases', e.g.
-entering `ch' is equivalent to `*.[ch]'.
-
-With \\[universal-argument] prefix, you can edit the constructed shell command line
-before it is executed.
-With two \\[universal-argument] prefixes, directly edit and run `grep-command'.
-
-Collect output in a buffer.  While git grep runs asynchronously, you
-can use \\[next-error] (M-x next-error), or \\<grep-mode-map>\\[compile-goto-error] \
-in the grep output buffer,
-to go to the lines where grep found matches.
-
-This command shares argument histories with \\[rgrep] and \\[grep]."
-  (interactive
-   (progn
-     (grep-compute-defaults)
-     (cond
-      ((equal current-prefix-arg '(16))
-       (list (read-from-minibuffer "Run: " "git grep"
-                                  nil nil 'grep-history)
-            nil))
-      (t (let* ((regexp (grep-read-regexp))
-               (files (grep-read-files regexp))
-               (dir (read-directory-name "In directory: "
-                                         nil default-directory t)))
-          (list regexp files dir))))))
-  (require 'grep)
-  (when (and (stringp regexp) (> (length regexp) 0))
-    (let ((command regexp))
-      (if (null files)
-         (if (string= command "git grep")
-             (setq command nil))
-       (setq dir (file-name-as-directory (expand-file-name dir)))
-       (setq command
-             (grep-expand-template "git grep -n -e <R> -- <F>" regexp files))
-       (when command
-         (if (equal current-prefix-arg '(4))
-             (setq command
-                   (read-from-minibuffer "Confirm: "
-                                         command nil nil 'grep-history))
-           (add-to-history 'grep-history command))))
-      (when command
-       (let ((default-directory dir)
-             (compilation-environment '("PAGER=")))
-         ;; Setting process-setup-function makes exit-message-function work
-         ;; even when async processes aren't supported.
-         (compilation-start command 'grep-mode))
-       (if (eq next-error-last-buffer (current-buffer))
-           (setq default-directory dir))))))
-
-(defun vc-git-stash (name)
-  "Create a stash."
-  (interactive "sStash name: ")
-  (let ((root (vc-git-root default-directory)))
-    (when root
-      (vc-git--call nil "stash" "save" name)
-      (vc-resynch-buffer root t t))))
-
-(defun vc-git-stash-show (name)
-  "Show the contents of stash NAME."
-  (interactive "sStash name: ")
-  (vc-setup-buffer "*vc-git-stash*")
-  (vc-git-command "*vc-git-stash*" 'async nil "stash" "show" "-p" name)
-  (set-buffer "*vc-git-stash*")
-  (diff-mode)
-  (setq buffer-read-only t)
-  (pop-to-buffer (current-buffer)))
-
-(defun vc-git-stash-apply (name)
-  "Apply stash NAME."
-  (interactive "sApply stash: ")
-  (vc-git-command "*vc-git-stash*" 0 nil "stash" "apply" "-q" name)
-  (vc-resynch-buffer (vc-git-root default-directory) t t))
-
-(defun vc-git-stash-pop (name)
-  "Pop stash NAME."
-  (interactive "sPop stash: ")
-  (vc-git-command "*vc-git-stash*" 0 nil "stash" "pop" "-q" name)
-  (vc-resynch-buffer (vc-git-root default-directory) t t))
-
-(defun vc-git-stash-snapshot ()
-  "Create a stash with the current tree state."
-  (interactive)
-  (vc-git--call nil "stash" "save"
-               (let ((ct (current-time)))
-                 (concat
-                  (format-time-string "Snapshot on %Y-%m-%d" ct)
-                  (format-time-string " at %H:%M" ct))))
-  (vc-git-command "*vc-git-stash*" 0 nil "stash" "apply" "-q" "stash@{0}")
-  (vc-resynch-buffer (vc-git-root default-directory) t t))
-
-(defun vc-git-stash-list ()
-  (delete
-   ""
-   (split-string
-    (replace-regexp-in-string
-     "^stash@" "             " (vc-git--run-command-string nil "stash" "list"))
-    "\n")))
-
-(defun vc-git-stash-get-at-point (point)
-  (save-excursion
-    (goto-char point)
-    (beginning-of-line)
-    (if (looking-at "^ +\\({[0-9]+}\\):")
-       (match-string 1)
-      (error "Cannot find stash at point"))))
-
-(defun vc-git-stash-delete-at-point ()
-  (interactive)
-  (let ((stash (vc-git-stash-get-at-point (point))))
-    (when (y-or-n-p (format "Remove stash %s ? " stash))
-      (vc-git--run-command-string nil "stash" "drop" (format "stash@%s" stash))
-      (vc-dir-refresh))))
-
-(defun vc-git-stash-show-at-point ()
-  (interactive)
-  (vc-git-stash-show (format "stash@%s" (vc-git-stash-get-at-point (point)))))
-
-(defun vc-git-stash-apply-at-point ()
-  (interactive)
-  (vc-git-stash-apply (format "stash@%s" (vc-git-stash-get-at-point (point)))))
-
-(defun vc-git-stash-pop-at-point ()
-  (interactive)
-  (vc-git-stash-pop (format "stash@%s" (vc-git-stash-get-at-point (point)))))
-
-(defun vc-git-stash-menu (e)
-  (interactive "e")
-  (vc-dir-at-event e (popup-menu vc-git-stash-menu-map e)))
-
-\f
-;;; Internal commands
-
-(defun vc-git-command (buffer okstatus file-or-list &rest flags)
-  "A wrapper around `vc-do-command' for use in vc-git.el.
-The difference to vc-do-command is that this function always invokes `git'."
-  (apply 'vc-do-command (or buffer "*vc*") okstatus "git" file-or-list flags))
-
-(defun vc-git--empty-db-p ()
-  "Check if the git db is empty (no commit done yet)."
-  (let (process-file-side-effects)
-    (not (eq 0 (vc-git--call nil "rev-parse" "--verify" "HEAD")))))
-
-(defun vc-git--call (buffer command &rest args)
-  ;; We don't need to care the arguments.  If there is a file name, it
-  ;; is always a relative one.  This works also for remote
-  ;; directories.
-  (apply 'process-file "git" nil buffer nil command args))
-
-(defun vc-git--out-ok (command &rest args)
-  (zerop (apply 'vc-git--call '(t nil) command args)))
-
-(defun vc-git--run-command-string (file &rest args)
-  "Run a git command on FILE and return its output as string.
-FILE can be nil."
-  (let* ((ok t)
-         (str (with-output-to-string
-                (with-current-buffer standard-output
-                  (unless (apply 'vc-git--out-ok
-                                (if file
-                                    (append args (list (file-relative-name
-                                                        file)))
-                                  args))
-                    (setq ok nil))))))
-    (and ok str)))
-
-(defun vc-git-symbolic-commit (commit)
-  "Translate COMMIT string into symbolic form.
-Returns nil if not possible."
-  (and commit
-       (let ((name (with-temp-buffer
-                     (and
-                      (vc-git--out-ok "name-rev" "--name-only" commit)
-                      (goto-char (point-min))
-                      (= (forward-line 2) 1)
-                      (bolp)
-                      (buffer-substring-no-properties (point-min)
-                                                      (1- (point-max)))))))
-         (and name (not (string= name "undefined")) name))))
-
-(provide 'vc-git)
-
-;; arch-tag: bd10664a-0e5b-48f5-a877-6c17b135be12
-;;; vc-git.el ends here