| ;;; git.el --- A user interface for git | 
 |  | 
 | ;; Copyright (C) 2005, 2006, 2007 Alexandre Julliard <julliard@winehq.org> | 
 |  | 
 | ;; Version: 1.0 | 
 |  | 
 | ;; 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 2 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, write to the Free | 
 | ;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, | 
 | ;; MA 02111-1307 USA | 
 |  | 
 | ;;; Commentary: | 
 |  | 
 | ;; This file contains an interface for the git version control | 
 | ;; system. It provides easy access to the most frequently used git | 
 | ;; commands. The user interface is as far as possible identical to | 
 | ;; that of the PCL-CVS mode. | 
 | ;; | 
 | ;; To install: put this file on the load-path and place the following | 
 | ;; in your .emacs file: | 
 | ;; | 
 | ;;    (require 'git) | 
 | ;; | 
 | ;; To start: `M-x git-status' | 
 | ;; | 
 | ;; TODO | 
 | ;;  - portability to XEmacs | 
 | ;;  - diff against other branch | 
 | ;;  - renaming files from the status buffer | 
 | ;;  - creating tags | 
 | ;;  - fetch/pull | 
 | ;;  - switching branches | 
 | ;;  - revlist browser | 
 | ;;  - git-show-branch browser | 
 | ;;  - menus | 
 | ;; | 
 |  | 
 | (eval-when-compile (require 'cl)) | 
 | (require 'ewoc) | 
 | (require 'log-edit) | 
 | (require 'easymenu) | 
 |  | 
 |  | 
 | ;;;; Customizations | 
 | ;;;; ------------------------------------------------------------ | 
 |  | 
 | (defgroup git nil | 
 |   "A user interface for the git versioning system." | 
 |   :group 'tools) | 
 |  | 
 | (defcustom git-committer-name nil | 
 |   "User name to use for commits. | 
 | The default is to fall back to the repository config, | 
 | then to `add-log-full-name' and then to `user-full-name'." | 
 |   :group 'git | 
 |   :type '(choice (const :tag "Default" nil) | 
 |                  (string :tag "Name"))) | 
 |  | 
 | (defcustom git-committer-email nil | 
 |   "Email address to use for commits. | 
 | The default is to fall back to the git repository config, | 
 | then to `add-log-mailing-address' and then to `user-mail-address'." | 
 |   :group 'git | 
 |   :type '(choice (const :tag "Default" nil) | 
 |                  (string :tag "Email"))) | 
 |  | 
 | (defcustom git-commits-coding-system nil | 
 |   "Default coding system for the log message of git commits." | 
 |   :group 'git | 
 |   :type '(choice (const :tag "From repository config" nil) | 
 |                  (coding-system))) | 
 |  | 
 | (defcustom git-append-signed-off-by nil | 
 |   "Whether to append a Signed-off-by line to the commit message before editing." | 
 |   :group 'git | 
 |   :type 'boolean) | 
 |  | 
 | (defcustom git-reuse-status-buffer t | 
 |   "Whether `git-status' should try to reuse an existing buffer | 
 | if there is already one that displays the same directory." | 
 |   :group 'git | 
 |   :type 'boolean) | 
 |  | 
 | (defcustom git-per-dir-ignore-file ".gitignore" | 
 |   "Name of the per-directory ignore file." | 
 |   :group 'git | 
 |   :type 'string) | 
 |  | 
 | (defcustom git-show-uptodate nil | 
 |   "Whether to display up-to-date files." | 
 |   :group 'git | 
 |   :type 'boolean) | 
 |  | 
 | (defcustom git-show-ignored nil | 
 |   "Whether to display ignored files." | 
 |   :group 'git | 
 |   :type 'boolean) | 
 |  | 
 | (defcustom git-show-unknown t | 
 |   "Whether to display unknown files." | 
 |   :group 'git | 
 |   :type 'boolean) | 
 |  | 
 |  | 
 | (defface git-status-face | 
 |   '((((class color) (background light)) (:foreground "purple")) | 
 |     (((class color) (background dark)) (:foreground "salmon"))) | 
 |   "Git mode face used to highlight added and modified files." | 
 |   :group 'git) | 
 |  | 
 | (defface git-unmerged-face | 
 |   '((((class color) (background light)) (:foreground "red" :bold t)) | 
 |     (((class color) (background dark)) (:foreground "red" :bold t))) | 
 |   "Git mode face used to highlight unmerged files." | 
 |   :group 'git) | 
 |  | 
 | (defface git-unknown-face | 
 |   '((((class color) (background light)) (:foreground "goldenrod" :bold t)) | 
 |     (((class color) (background dark)) (:foreground "goldenrod" :bold t))) | 
 |   "Git mode face used to highlight unknown files." | 
 |   :group 'git) | 
 |  | 
 | (defface git-uptodate-face | 
 |   '((((class color) (background light)) (:foreground "grey60")) | 
 |     (((class color) (background dark)) (:foreground "grey40"))) | 
 |   "Git mode face used to highlight up-to-date files." | 
 |   :group 'git) | 
 |  | 
 | (defface git-ignored-face | 
 |   '((((class color) (background light)) (:foreground "grey60")) | 
 |     (((class color) (background dark)) (:foreground "grey40"))) | 
 |   "Git mode face used to highlight ignored files." | 
 |   :group 'git) | 
 |  | 
 | (defface git-mark-face | 
 |   '((((class color) (background light)) (:foreground "red" :bold t)) | 
 |     (((class color) (background dark)) (:foreground "tomato" :bold t))) | 
 |   "Git mode face used for the file marks." | 
 |   :group 'git) | 
 |  | 
 | (defface git-header-face | 
 |   '((((class color) (background light)) (:foreground "blue")) | 
 |     (((class color) (background dark)) (:foreground "blue"))) | 
 |   "Git mode face used for commit headers." | 
 |   :group 'git) | 
 |  | 
 | (defface git-separator-face | 
 |   '((((class color) (background light)) (:foreground "brown")) | 
 |     (((class color) (background dark)) (:foreground "brown"))) | 
 |   "Git mode face used for commit separator." | 
 |   :group 'git) | 
 |  | 
 | (defface git-permission-face | 
 |   '((((class color) (background light)) (:foreground "green" :bold t)) | 
 |     (((class color) (background dark)) (:foreground "green" :bold t))) | 
 |   "Git mode face used for permission changes." | 
 |   :group 'git) | 
 |  | 
 |  | 
 | ;;;; Utilities | 
 | ;;;; ------------------------------------------------------------ | 
 |  | 
 | (defconst git-log-msg-separator "--- log message follows this line ---") | 
 |  | 
 | (defvar git-log-edit-font-lock-keywords | 
 |   `(("^\\(Author:\\|Date:\\|Merge:\\|Signed-off-by:\\)\\(.*\\)$" | 
 |      (1 font-lock-keyword-face) | 
 |      (2 font-lock-function-name-face)) | 
 |     (,(concat "^\\(" (regexp-quote git-log-msg-separator) "\\)$") | 
 |      (1 font-lock-comment-face)))) | 
 |  | 
 | (defun git-get-env-strings (env) | 
 |   "Build a list of NAME=VALUE strings from a list of environment strings." | 
 |   (mapcar (lambda (entry) (concat (car entry) "=" (cdr entry))) env)) | 
 |  | 
 | (defun git-call-process (buffer &rest args) | 
 |   "Wrapper for call-process that sets environment strings." | 
 |   (apply #'call-process "git" nil buffer nil args)) | 
 |  | 
 | (defun git-call-process-display-error (&rest args) | 
 |   "Wrapper for call-process that displays error messages." | 
 |   (let* ((dir default-directory) | 
 |          (buffer (get-buffer-create "*Git Command Output*")) | 
 |          (ok (with-current-buffer buffer | 
 |                (let ((default-directory dir) | 
 |                      (buffer-read-only nil)) | 
 |                  (erase-buffer) | 
 |                  (eq 0 (apply #'git-call-process (list buffer t) args)))))) | 
 |     (unless ok (display-message-or-buffer buffer)) | 
 |     ok)) | 
 |  | 
 | (defun git-call-process-string (&rest args) | 
 |   "Wrapper for call-process that returns the process output as a string, | 
 | or nil if the git command failed." | 
 |   (with-temp-buffer | 
 |     (and (eq 0 (apply #'git-call-process t args)) | 
 |          (buffer-string)))) | 
 |  | 
 | (defun git-call-process-string-display-error (&rest args) | 
 |   "Wrapper for call-process that displays error message and returns | 
 | the process output as a string, or nil if the git command failed." | 
 |   (with-temp-buffer | 
 |     (if (eq 0 (apply #'git-call-process (list t t) args)) | 
 |         (buffer-string) | 
 |       (display-message-or-buffer (current-buffer)) | 
 |       nil))) | 
 |  | 
 | (defun git-run-process-region (buffer start end program args) | 
 |   "Run a git process with a buffer region as input." | 
 |   (let ((output-buffer (current-buffer)) | 
 |         (dir default-directory)) | 
 |     (with-current-buffer buffer | 
 |       (cd dir) | 
 |       (apply #'call-process-region start end program | 
 |              nil (list output-buffer nil) nil args)))) | 
 |  | 
 | (defun git-run-command-buffer (buffer-name &rest args) | 
 |   "Run a git command, sending the output to a buffer named BUFFER-NAME." | 
 |   (let ((dir default-directory) | 
 |         (buffer (get-buffer-create buffer-name))) | 
 |     (message "Running git %s..." (car args)) | 
 |     (with-current-buffer buffer | 
 |       (let ((default-directory dir) | 
 |             (buffer-read-only nil)) | 
 |         (erase-buffer) | 
 |         (apply #'git-call-process buffer args))) | 
 |     (message "Running git %s...done" (car args)) | 
 |     buffer)) | 
 |  | 
 | (defun git-run-command-region (buffer start end env &rest args) | 
 |   "Run a git command with specified buffer region as input." | 
 |   (unless (eq 0 (if env | 
 |                     (git-run-process-region | 
 |                      buffer start end "env" | 
 |                      (append (git-get-env-strings env) (list "git") args)) | 
 |                   (git-run-process-region | 
 |                    buffer start end "git" args))) | 
 |     (error "Failed to run \"git %s\":\n%s" (mapconcat (lambda (x) x) args " ") (buffer-string)))) | 
 |  | 
 | (defun git-run-hook (hook env &rest args) | 
 |   "Run a git hook and display its output if any." | 
 |   (let ((dir default-directory) | 
 |         (hook-name (expand-file-name (concat ".git/hooks/" hook)))) | 
 |     (or (not (file-executable-p hook-name)) | 
 |         (let (status (buffer (get-buffer-create "*Git Hook Output*"))) | 
 |           (with-current-buffer buffer | 
 |             (erase-buffer) | 
 |             (cd dir) | 
 |             (setq status | 
 |                   (if env | 
 |                       (apply #'call-process "env" nil (list buffer t) nil | 
 |                              (append (git-get-env-strings env) (list hook-name) args)) | 
 |                     (apply #'call-process hook-name nil (list buffer t) nil args)))) | 
 |           (display-message-or-buffer buffer) | 
 |           (eq 0 status))))) | 
 |  | 
 | (defun git-get-string-sha1 (string) | 
 |   "Read a SHA1 from the specified string." | 
 |   (and string | 
 |        (string-match "[0-9a-f]\\{40\\}" string) | 
 |        (match-string 0 string))) | 
 |  | 
 | (defun git-get-committer-name () | 
 |   "Return the name to use as GIT_COMMITTER_NAME." | 
 |   ; copied from log-edit | 
 |   (or git-committer-name | 
 |       (git-config "user.name") | 
 |       (and (boundp 'add-log-full-name) add-log-full-name) | 
 |       (and (fboundp 'user-full-name) (user-full-name)) | 
 |       (and (boundp 'user-full-name) user-full-name))) | 
 |  | 
 | (defun git-get-committer-email () | 
 |   "Return the email address to use as GIT_COMMITTER_EMAIL." | 
 |   ; copied from log-edit | 
 |   (or git-committer-email | 
 |       (git-config "user.email") | 
 |       (and (boundp 'add-log-mailing-address) add-log-mailing-address) | 
 |       (and (fboundp 'user-mail-address) (user-mail-address)) | 
 |       (and (boundp 'user-mail-address) user-mail-address))) | 
 |  | 
 | (defun git-get-commits-coding-system () | 
 |   "Return the coding system to use for commits." | 
 |   (let ((repo-config (git-config "i18n.commitencoding"))) | 
 |     (or git-commits-coding-system | 
 |         (and repo-config | 
 |              (fboundp 'locale-charset-to-coding-system) | 
 |              (locale-charset-to-coding-system repo-config)) | 
 |       'utf-8))) | 
 |  | 
 | (defun git-get-logoutput-coding-system () | 
 |   "Return the coding system used for git-log output." | 
 |   (let ((repo-config (or (git-config "i18n.logoutputencoding") | 
 |                          (git-config "i18n.commitencoding")))) | 
 |     (or git-commits-coding-system | 
 |         (and repo-config | 
 |              (fboundp 'locale-charset-to-coding-system) | 
 |              (locale-charset-to-coding-system repo-config)) | 
 |       'utf-8))) | 
 |  | 
 | (defun 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 git-success-message (text files) | 
 |   "Print a success message after having handled FILES." | 
 |   (let ((n (length files))) | 
 |     (if (equal n 1) | 
 |         (message "%s %s" text (car files)) | 
 |       (message "%s %d files" text n)))) | 
 |  | 
 | (defun git-get-top-dir (dir) | 
 |   "Retrieve the top-level directory of a git tree." | 
 |   (let ((cdup (with-output-to-string | 
 |                 (with-current-buffer standard-output | 
 |                   (cd dir) | 
 |                   (unless (eq 0 (git-call-process t "rev-parse" "--show-cdup")) | 
 |                     (error "cannot find top-level git tree for %s." dir)))))) | 
 |     (expand-file-name (concat (file-name-as-directory dir) | 
 |                               (car (split-string cdup "\n")))))) | 
 |  | 
 | ;stolen from pcl-cvs | 
 | (defun git-append-to-ignore (file) | 
 |   "Add a file name to the ignore file in its directory." | 
 |   (let* ((fullname (expand-file-name file)) | 
 |          (dir (file-name-directory fullname)) | 
 |          (name (file-name-nondirectory fullname)) | 
 |          (ignore-name (expand-file-name git-per-dir-ignore-file dir)) | 
 |          (created (not (file-exists-p ignore-name)))) | 
 |   (save-window-excursion | 
 |     (set-buffer (find-file-noselect ignore-name)) | 
 |     (goto-char (point-max)) | 
 |     (unless (zerop (current-column)) (insert "\n")) | 
 |     (insert "/" name "\n") | 
 |     (sort-lines nil (point-min) (point-max)) | 
 |     (save-buffer)) | 
 |   (when created | 
 |     (git-call-process nil "update-index" "--add" "--" (file-relative-name ignore-name))) | 
 |   (git-update-status-files (list (file-relative-name ignore-name))))) | 
 |  | 
 | ; propertize definition for XEmacs, stolen from erc-compat | 
 | (eval-when-compile | 
 |   (unless (fboundp 'propertize) | 
 |     (defun propertize (string &rest props) | 
 |       (let ((string (copy-sequence string))) | 
 |         (while props | 
 |           (put-text-property 0 (length string) (nth 0 props) (nth 1 props) string) | 
 |           (setq props (cddr props))) | 
 |         string)))) | 
 |  | 
 | ;;;; Wrappers for basic git commands | 
 | ;;;; ------------------------------------------------------------ | 
 |  | 
 | (defun git-rev-parse (rev) | 
 |   "Parse a revision name and return its SHA1." | 
 |   (git-get-string-sha1 | 
 |    (git-call-process-string "rev-parse" rev))) | 
 |  | 
 | (defun git-config (key) | 
 |   "Retrieve the value associated to KEY in the git repository config file." | 
 |   (let ((str (git-call-process-string "config" key))) | 
 |     (and str (car (split-string str "\n"))))) | 
 |  | 
 | (defun git-symbolic-ref (ref) | 
 |   "Wrapper for the git-symbolic-ref command." | 
 |   (let ((str (git-call-process-string "symbolic-ref" ref))) | 
 |     (and str (car (split-string str "\n"))))) | 
 |  | 
 | (defun git-update-ref (ref newval &optional oldval reason) | 
 |   "Update a reference by calling git-update-ref." | 
 |   (let ((args (and oldval (list oldval)))) | 
 |     (when newval (push newval args)) | 
 |     (push ref args) | 
 |     (when reason | 
 |      (push reason args) | 
 |      (push "-m" args)) | 
 |     (unless newval (push "-d" args)) | 
 |     (apply 'git-call-process-display-error "update-ref" args))) | 
 |  | 
 | (defun git-read-tree (tree &optional index-file) | 
 |   "Read a tree into the index file." | 
 |   (let ((process-environment | 
 |          (append (and index-file (list (concat "GIT_INDEX_FILE=" index-file))) process-environment))) | 
 |     (apply 'git-call-process-display-error "read-tree" (if tree (list tree))))) | 
 |  | 
 | (defun git-write-tree (&optional index-file) | 
 |   "Call git-write-tree and return the resulting tree SHA1 as a string." | 
 |   (let ((process-environment | 
 |          (append (and index-file (list (concat "GIT_INDEX_FILE=" index-file))) process-environment))) | 
 |     (git-get-string-sha1 | 
 |      (git-call-process-string-display-error "write-tree")))) | 
 |  | 
 | (defun git-commit-tree (buffer tree head) | 
 |   "Call git-commit-tree with buffer as input and return the resulting commit SHA1." | 
 |   (let ((author-name (git-get-committer-name)) | 
 |         (author-email (git-get-committer-email)) | 
 |         (subject "commit (initial): ") | 
 |         author-date log-start log-end args coding-system-for-write) | 
 |     (when head | 
 |       (setq subject "commit: ") | 
 |       (push "-p" args) | 
 |       (push head args)) | 
 |     (with-current-buffer buffer | 
 |       (goto-char (point-min)) | 
 |       (if | 
 |           (setq log-start (re-search-forward (concat "^" (regexp-quote git-log-msg-separator) "\n") nil t)) | 
 |           (save-restriction | 
 |             (narrow-to-region (point-min) log-start) | 
 |             (goto-char (point-min)) | 
 |             (when (re-search-forward "^Author: +\\(.*?\\) *<\\(.*\\)> *$" nil t) | 
 |               (setq author-name (match-string 1) | 
 |                     author-email (match-string 2))) | 
 |             (goto-char (point-min)) | 
 |             (when (re-search-forward "^Date: +\\(.*\\)$" nil t) | 
 |               (setq author-date (match-string 1))) | 
 |             (goto-char (point-min)) | 
 |             (when (re-search-forward "^Merge: +\\(.*\\)" nil t) | 
 |               (setq subject "commit (merge): ") | 
 |               (dolist (parent (split-string (match-string 1) " +" t)) | 
 |                 (push "-p" args) | 
 |                 (push parent args)))) | 
 |         (setq log-start (point-min))) | 
 |       (setq log-end (point-max)) | 
 |       (goto-char log-start) | 
 |       (when (re-search-forward ".*$" nil t) | 
 |         (setq subject (concat subject (match-string 0)))) | 
 |       (setq coding-system-for-write buffer-file-coding-system)) | 
 |     (let ((commit | 
 |            (git-get-string-sha1 | 
 |             (with-output-to-string | 
 |               (with-current-buffer standard-output | 
 |                 (let ((env `(("GIT_AUTHOR_NAME" . ,author-name) | 
 |                              ("GIT_AUTHOR_EMAIL" . ,author-email) | 
 |                              ("GIT_COMMITTER_NAME" . ,(git-get-committer-name)) | 
 |                              ("GIT_COMMITTER_EMAIL" . ,(git-get-committer-email))))) | 
 |                   (when author-date (push `("GIT_AUTHOR_DATE" . ,author-date) env)) | 
 |                   (apply #'git-run-command-region | 
 |                          buffer log-start log-end env | 
 |                          "commit-tree" tree (nreverse args)))))))) | 
 |       (and (git-update-ref "HEAD" commit head subject) | 
 |            commit)))) | 
 |  | 
 | (defun git-empty-db-p () | 
 |   "Check if the git db is empty (no commit done yet)." | 
 |   (not (eq 0 (git-call-process nil "rev-parse" "--verify" "HEAD")))) | 
 |  | 
 | (defun git-get-merge-heads () | 
 |   "Retrieve the merge heads from the MERGE_HEAD file if present." | 
 |   (let (heads) | 
 |     (when (file-readable-p ".git/MERGE_HEAD") | 
 |       (with-temp-buffer | 
 |         (insert-file-contents ".git/MERGE_HEAD" nil nil nil t) | 
 |         (goto-char (point-min)) | 
 |         (while (re-search-forward "[0-9a-f]\\{40\\}" nil t) | 
 |           (push (match-string 0) heads)))) | 
 |     (nreverse heads))) | 
 |  | 
 | (defun git-get-commit-description (commit) | 
 |   "Get a one-line description of COMMIT." | 
 |   (let ((coding-system-for-read (git-get-logoutput-coding-system))) | 
 |     (let ((descr (git-call-process-string "log" "--max-count=1" "--pretty=oneline" commit))) | 
 |       (if (and descr (string-match "\\`\\([0-9a-f]\\{40\\}\\) *\\(.*\\)$" descr)) | 
 |           (concat (substring (match-string 1 descr) 0 10) " - " (match-string 2 descr)) | 
 |         descr)))) | 
 |  | 
 | ;;;; File info structure | 
 | ;;;; ------------------------------------------------------------ | 
 |  | 
 | ; fileinfo structure stolen from pcl-cvs | 
 | (defstruct (git-fileinfo | 
 |             (:copier nil) | 
 |             (:constructor git-create-fileinfo (state name &optional old-perm new-perm rename-state orig-name marked)) | 
 |             (:conc-name git-fileinfo->)) | 
 |   marked              ;; t/nil | 
 |   state               ;; current state | 
 |   name                ;; file name | 
 |   old-perm new-perm   ;; permission flags | 
 |   rename-state        ;; rename or copy state | 
 |   orig-name           ;; original name for renames or copies | 
 |   needs-update        ;; whether file needs to be updated | 
 |   needs-refresh)      ;; whether file needs to be refreshed | 
 |  | 
 | (defvar git-status nil) | 
 |  | 
 | (defun git-set-fileinfo-state (info state) | 
 |   "Set the state of a file info." | 
 |   (unless (eq (git-fileinfo->state info) state) | 
 |     (setf (git-fileinfo->state info) state | 
 | 	  (git-fileinfo->new-perm info) (git-fileinfo->old-perm info) | 
 |           (git-fileinfo->rename-state info) nil | 
 |           (git-fileinfo->orig-name info) nil | 
 |           (git-fileinfo->needs-update info) nil | 
 |           (git-fileinfo->needs-refresh info) t))) | 
 |  | 
 | (defun git-status-filenames-map (status func files &rest args) | 
 |   "Apply FUNC to the status files names in the FILES list." | 
 |   (when files | 
 |     (setq files (sort files #'string-lessp)) | 
 |     (let ((file (pop files)) | 
 |           (node (ewoc-nth status 0))) | 
 |       (while (and file node) | 
 |         (let* ((info (ewoc-data node)) | 
 |                (name (git-fileinfo->name info))) | 
 |           (if (string-lessp name file) | 
 |               (setq node (ewoc-next status node)) | 
 |             (if (string-equal name file) | 
 |                 (apply func info args)) | 
 |             (setq file (pop files)))))))) | 
 |  | 
 | (defun git-set-filenames-state (status files state) | 
 |   "Set the state of a list of named files." | 
 |   (when files | 
 |     (git-status-filenames-map status #'git-set-fileinfo-state files state) | 
 |     (unless state  ;; delete files whose state has been set to nil | 
 |       (ewoc-filter status (lambda (info) (git-fileinfo->state info)))))) | 
 |  | 
 | (defun git-state-code (code) | 
 |   "Convert from a string to a added/deleted/modified state." | 
 |   (case (string-to-char code) | 
 |     (?M 'modified) | 
 |     (?? 'unknown) | 
 |     (?A 'added) | 
 |     (?D 'deleted) | 
 |     (?U 'unmerged) | 
 |     (?T 'modified) | 
 |     (t nil))) | 
 |  | 
 | (defun git-status-code-as-string (code) | 
 |   "Format a git status code as string." | 
 |   (case code | 
 |     ('modified (propertize "Modified" 'face 'git-status-face)) | 
 |     ('unknown  (propertize "Unknown " 'face 'git-unknown-face)) | 
 |     ('added    (propertize "Added   " 'face 'git-status-face)) | 
 |     ('deleted  (propertize "Deleted " 'face 'git-status-face)) | 
 |     ('unmerged (propertize "Unmerged" 'face 'git-unmerged-face)) | 
 |     ('uptodate (propertize "Uptodate" 'face 'git-uptodate-face)) | 
 |     ('ignored  (propertize "Ignored " 'face 'git-ignored-face)) | 
 |     (t "?       "))) | 
 |  | 
 | (defun 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 'git-status-face)) | 
 |           ((eq new-type ?\110) "/") | 
 |           (t "")))) | 
 |  | 
 | (defun git-rename-as-string (info) | 
 |   "Return a string describing the copy or rename associated with INFO, or an empty string if none." | 
 |   (let ((state (git-fileinfo->rename-state info))) | 
 |     (if state | 
 |         (propertize | 
 |          (concat "   (" | 
 |                  (if (eq state 'copy) "copied from " | 
 |                    (if (eq (git-fileinfo->state info) 'added) "renamed from " | 
 |                      "renamed to ")) | 
 |                  (git-escape-file-name (git-fileinfo->orig-name info)) | 
 |                  ")") 'face 'git-status-face) | 
 |       ""))) | 
 |  | 
 | (defun 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 'git-permission-face)) | 
 |  | 
 | (defun git-fileinfo-prettyprint (info) | 
 |   "Pretty-printer for the git-fileinfo structure." | 
 |   (let ((old-perm (git-fileinfo->old-perm info)) | 
 | 	(new-perm (git-fileinfo->new-perm info))) | 
 |     (insert (concat "   " (if (git-fileinfo->marked info) (propertize "*" 'face 'git-mark-face) " ") | 
 | 		    " " (git-status-code-as-string (git-fileinfo->state info)) | 
 | 		    " " (git-permissions-as-string old-perm new-perm) | 
 | 		    "  " (git-escape-file-name (git-fileinfo->name info)) | 
 | 		    (git-file-type-as-string old-perm new-perm) | 
 | 		    (git-rename-as-string info))))) | 
 |  | 
 | (defun git-update-node-fileinfo (node info) | 
 |   "Update the fileinfo of the specified node. The names are assumed to match already." | 
 |   (let ((data (ewoc-data node))) | 
 |     (setf | 
 |      ;; preserve the marked flag | 
 |      (git-fileinfo->marked info) (git-fileinfo->marked data) | 
 |      (git-fileinfo->needs-update data) nil) | 
 |     (when (not (equal info data)) | 
 |       (setf (git-fileinfo->needs-refresh info) t | 
 |             (ewoc-data node) info)))) | 
 |  | 
 | (defun git-insert-info-list (status infolist files) | 
 |   "Insert a sorted list of file infos in the status buffer, replacing existing ones if any." | 
 |   (let* ((info (pop infolist)) | 
 |          (node (ewoc-nth status 0)) | 
 |          (name (and info (git-fileinfo->name info))) | 
 |          remaining) | 
 |     (while info | 
 |       (let ((nodename (and node (git-fileinfo->name (ewoc-data node))))) | 
 |         (while (and files (string-lessp (car files) name)) | 
 |           (push (pop files) remaining)) | 
 |         (when (and files (string-equal (car files) name)) | 
 |           (setq files (cdr files))) | 
 |         (cond ((not nodename) | 
 |                (setq node (ewoc-enter-last status info)) | 
 |                (setq info (pop infolist)) | 
 |                (setq name (and info (git-fileinfo->name info)))) | 
 |               ((string-lessp nodename name) | 
 |                (setq node (ewoc-next status node))) | 
 |               ((string-equal nodename name) | 
 |                ;; preserve the marked flag | 
 |                (git-update-node-fileinfo node info) | 
 |                (setq info (pop infolist)) | 
 |                (setq name (and info (git-fileinfo->name info)))) | 
 |               (t | 
 |                (setq node (ewoc-enter-before status node info)) | 
 |                (setq info (pop infolist)) | 
 |                (setq name (and info (git-fileinfo->name info))))))) | 
 |     (nconc (nreverse remaining) files))) | 
 |  | 
 | (defun git-run-diff-index (status files) | 
 |   "Run git-diff-index on FILES and parse the results into STATUS. | 
 | Return the list of files that haven't been handled." | 
 |   (let (infolist) | 
 |     (with-temp-buffer | 
 |       (apply #'git-call-process t "diff-index" "-z" "-M" "HEAD" "--" files) | 
 |       (goto-char (point-min)) | 
 |       (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 (git-create-fileinfo 'added new-name old-perm new-perm 'copy name) infolist) | 
 |                 (push (git-create-fileinfo 'deleted name 0 0 'rename new-name) infolist) | 
 |                 (push (git-create-fileinfo 'added new-name old-perm new-perm 'rename name) infolist)) | 
 |             (push (git-create-fileinfo (git-state-code state) name old-perm new-perm) infolist))))) | 
 |     (setq infolist (sort (nreverse infolist) | 
 |                          (lambda (info1 info2) | 
 |                            (string-lessp (git-fileinfo->name info1) | 
 |                                          (git-fileinfo->name info2))))) | 
 |     (git-insert-info-list status infolist files))) | 
 |  | 
 | (defun git-find-status-file (status file) | 
 |   "Find a given file in the status ewoc and return its node." | 
 |   (let ((node (ewoc-nth status 0))) | 
 |     (while (and node (not (string= file (git-fileinfo->name (ewoc-data node))))) | 
 |       (setq node (ewoc-next status node))) | 
 |     node)) | 
 |  | 
 | (defun git-run-ls-files (status files default-state &rest options) | 
 |   "Run git-ls-files on FILES and parse the results into STATUS. | 
 | Return the list of files that haven't been handled." | 
 |   (let (infolist) | 
 |     (with-temp-buffer | 
 |       (apply #'git-call-process t "ls-files" "-z" (append options (list "--") files)) | 
 |       (goto-char (point-min)) | 
 |       (while (re-search-forward "\\([^\0]*?\\)\\(/?\\)\0" nil t 1) | 
 |         (let ((name (match-string 1))) | 
 |           (push (git-create-fileinfo default-state name 0 | 
 |                                      (if (string-equal "/" (match-string 2)) (lsh ?\110 9) 0)) | 
 |                 infolist)))) | 
 |     (setq infolist (nreverse infolist))  ;; assume it is sorted already | 
 |     (git-insert-info-list status infolist files))) | 
 |  | 
 | (defun git-run-ls-files-cached (status files default-state) | 
 |   "Run git-ls-files -c on FILES and parse the results into STATUS. | 
 | Return the list of files that haven't been handled." | 
 |   (let (infolist) | 
 |     (with-temp-buffer | 
 |       (apply #'git-call-process t "ls-files" "-z" "-s" "-c" "--" files) | 
 |       (goto-char (point-min)) | 
 |       (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)) | 
 | 	       (old-perm (if (eq default-state 'added) 0 new-perm)) | 
 | 	       (name (match-string 2))) | 
 | 	  (push (git-create-fileinfo default-state name old-perm new-perm) infolist)))) | 
 |     (setq infolist (nreverse infolist))  ;; assume it is sorted already | 
 |     (git-insert-info-list status infolist files))) | 
 |  | 
 | (defun git-run-ls-unmerged (status files) | 
 |   "Run git-ls-files -u on FILES and parse the results into STATUS." | 
 |   (with-temp-buffer | 
 |     (apply #'git-call-process t "ls-files" "-z" "-u" "--" files) | 
 |     (goto-char (point-min)) | 
 |     (let (unmerged-files) | 
 |       (while (re-search-forward "[0-7]\\{6\\} [0-9a-f]\\{40\\} [123]\t\\([^\0]+\\)\0" nil t) | 
 |         (push (match-string 1) unmerged-files)) | 
 |       (git-set-filenames-state status unmerged-files 'unmerged)))) | 
 |  | 
 | (defun git-get-exclude-files () | 
 |   "Get the list of exclude files to pass to git-ls-files." | 
 |   (let (files | 
 |         (config (git-config "core.excludesfile"))) | 
 |     (when (file-readable-p ".git/info/exclude") | 
 |       (push ".git/info/exclude" files)) | 
 |     (when (and config (file-readable-p config)) | 
 |       (push config files)) | 
 |     files)) | 
 |  | 
 | (defun git-run-ls-files-with-excludes (status files default-state &rest options) | 
 |   "Run git-ls-files on FILES with appropriate --exclude-from options." | 
 |   (let ((exclude-files (git-get-exclude-files))) | 
 |     (apply #'git-run-ls-files status files default-state "--directory" "--no-empty-directory" | 
 |            (concat "--exclude-per-directory=" git-per-dir-ignore-file) | 
 |            (append options (mapcar (lambda (f) (concat "--exclude-from=" f)) exclude-files))))) | 
 |  | 
 | (defun git-update-status-files (&optional files mark-files) | 
 |   "Update the status of FILES from the index." | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   ;; set the needs-update flag on existing files | 
 |   (if (setq files (sort files #'string-lessp)) | 
 |       (git-status-filenames-map | 
 |        git-status (lambda (info) (setf (git-fileinfo->needs-update info) t)) files) | 
 |     (ewoc-map (lambda (info) (setf (git-fileinfo->needs-update info) t) nil) git-status) | 
 |     (git-call-process nil "update-index" "--refresh") | 
 |     (when git-show-uptodate | 
 |       (git-run-ls-files-cached git-status nil 'uptodate))) | 
 |   (let* ((remaining-files | 
 |           (if (git-empty-db-p) ; we need some special handling for an empty db | 
 | 	      (git-run-ls-files-cached git-status files 'added) | 
 |             (git-run-diff-index git-status files)))) | 
 |     (git-run-ls-unmerged git-status files) | 
 |     (when (or remaining-files (and git-show-unknown (not files))) | 
 |       (setq remaining-files (git-run-ls-files-with-excludes git-status remaining-files 'unknown "-o"))) | 
 |     (when (or remaining-files (and git-show-ignored (not files))) | 
 |       (setq remaining-files (git-run-ls-files-with-excludes git-status remaining-files 'ignored "-o" "-i"))) | 
 |     (unless files | 
 |       (setq remaining-files (git-get-filenames (ewoc-collect git-status #'git-fileinfo->needs-update)))) | 
 |     (when remaining-files | 
 |       (setq remaining-files (git-run-ls-files-cached git-status remaining-files 'uptodate))) | 
 |     (git-set-filenames-state git-status remaining-files nil) | 
 |     (when mark-files (git-mark-files git-status files)) | 
 |     (git-refresh-files) | 
 |     (git-refresh-ewoc-hf git-status))) | 
 |  | 
 | (defun git-mark-files (status files) | 
 |   "Mark all the specified FILES, and unmark the others." | 
 |   (let ((file (and files (pop files))) | 
 |         (node (ewoc-nth status 0))) | 
 |     (while node | 
 |       (let ((info (ewoc-data node))) | 
 |         (if (and file (string-equal (git-fileinfo->name info) file)) | 
 |             (progn | 
 |               (unless (git-fileinfo->marked info) | 
 |                 (setf (git-fileinfo->marked info) t) | 
 |                 (setf (git-fileinfo->needs-refresh info) t)) | 
 |               (setq file (pop files)) | 
 |               (setq node (ewoc-next status node))) | 
 |           (when (git-fileinfo->marked info) | 
 |             (setf (git-fileinfo->marked info) nil) | 
 |             (setf (git-fileinfo->needs-refresh info) t)) | 
 |           (if (and file (string-lessp file (git-fileinfo->name info))) | 
 |               (setq file (pop files)) | 
 |             (setq node (ewoc-next status node)))))))) | 
 |  | 
 | (defun git-marked-files () | 
 |   "Return a list of all marked files, or if none a list containing just the file at cursor position." | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (or (ewoc-collect git-status (lambda (info) (git-fileinfo->marked info))) | 
 |       (list (ewoc-data (ewoc-locate git-status))))) | 
 |  | 
 | (defun git-marked-files-state (&rest states) | 
 |   "Return marked files that are in the specified states." | 
 |   (let ((files (git-marked-files)) | 
 |         result) | 
 |     (dolist (info files) | 
 |       (when (memq (git-fileinfo->state info) states) | 
 |         (push info result))) | 
 |     result)) | 
 |  | 
 | (defun git-refresh-files () | 
 |   "Refresh all files that need it and clear the needs-refresh flag." | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (ewoc-map | 
 |    (lambda (info) | 
 |      (let ((refresh (git-fileinfo->needs-refresh info))) | 
 |        (setf (git-fileinfo->needs-refresh info) nil) | 
 |        refresh)) | 
 |    git-status) | 
 |   ; move back to goal column | 
 |   (when goal-column (move-to-column goal-column))) | 
 |  | 
 | (defun git-refresh-ewoc-hf (status) | 
 |   "Refresh the ewoc header and footer." | 
 |   (let ((branch (git-symbolic-ref "HEAD")) | 
 |         (head (if (git-empty-db-p) "Nothing committed yet" | 
 |                 (git-get-commit-description "HEAD"))) | 
 |         (merge-heads (git-get-merge-heads))) | 
 |     (ewoc-set-hf status | 
 |                  (format "Directory:  %s\nBranch:     %s\nHead:       %s%s\n" | 
 |                          default-directory | 
 |                          (if branch | 
 |                              (if (string-match "^refs/heads/" branch) | 
 |                                  (substring branch (match-end 0)) | 
 |                                branch) | 
 |                            "none (detached HEAD)") | 
 |                          head | 
 |                          (if merge-heads | 
 |                              (concat "\nMerging:    " | 
 |                                      (mapconcat (lambda (str) (git-get-commit-description str)) merge-heads "\n            ")) | 
 |                            "")) | 
 |                  (if (ewoc-nth status 0) "" "    No changes.")))) | 
 |  | 
 | (defun git-get-filenames (files) | 
 |   (mapcar (lambda (info) (git-fileinfo->name info)) files)) | 
 |  | 
 | (defun git-update-index (index-file files) | 
 |   "Run git-update-index on a list of files." | 
 |   (let ((process-environment (append (and index-file (list (concat "GIT_INDEX_FILE=" index-file))) | 
 |                                      process-environment)) | 
 |         added deleted modified) | 
 |     (dolist (info files) | 
 |       (case (git-fileinfo->state info) | 
 |         ('added (push info added)) | 
 |         ('deleted (push info deleted)) | 
 |         ('modified (push info modified)))) | 
 |     (and | 
 |      (or (not added) (apply #'git-call-process-display-error "update-index" "--add" "--" (git-get-filenames added))) | 
 |      (or (not deleted) (apply #'git-call-process-display-error "update-index" "--remove" "--" (git-get-filenames deleted))) | 
 |      (or (not modified) (apply #'git-call-process-display-error "update-index" "--" (git-get-filenames modified)))))) | 
 |  | 
 | (defun git-run-pre-commit-hook () | 
 |   "Run the pre-commit hook if any." | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (let ((files (git-marked-files-state 'added 'deleted 'modified))) | 
 |     (or (not files) | 
 |         (not (file-executable-p ".git/hooks/pre-commit")) | 
 |         (let ((index-file (make-temp-file "gitidx"))) | 
 |           (unwind-protect | 
 |             (let ((head-tree (unless (git-empty-db-p) (git-rev-parse "HEAD^{tree}")))) | 
 |               (git-read-tree head-tree index-file) | 
 |               (git-update-index index-file files) | 
 |               (git-run-hook "pre-commit" `(("GIT_INDEX_FILE" . ,index-file)))) | 
 |           (delete-file index-file)))))) | 
 |  | 
 | (defun git-do-commit () | 
 |   "Perform the actual commit using the current buffer as log message." | 
 |   (interactive) | 
 |   (let ((buffer (current-buffer)) | 
 |         (index-file (make-temp-file "gitidx"))) | 
 |     (with-current-buffer log-edit-parent-buffer | 
 |       (if (git-marked-files-state 'unmerged) | 
 |           (message "You cannot commit unmerged files, resolve them first.") | 
 |         (unwind-protect | 
 |             (let ((files (git-marked-files-state 'added 'deleted 'modified)) | 
 |                   head tree head-tree) | 
 |               (unless (git-empty-db-p) | 
 |                 (setq head (git-rev-parse "HEAD") | 
 |                       head-tree (git-rev-parse "HEAD^{tree}"))) | 
 |               (message "Running git commit...") | 
 |               (when | 
 |                   (and | 
 |                    (git-read-tree head-tree index-file) | 
 |                    (git-update-index nil files)         ;update both the default index | 
 |                    (git-update-index index-file files)  ;and the temporary one | 
 |                    (setq tree (git-write-tree index-file))) | 
 |                 (if (or (not (string-equal tree head-tree)) | 
 |                         (yes-or-no-p "The tree was not modified, do you really want to perform an empty commit? ")) | 
 |                     (let ((commit (git-commit-tree buffer tree head))) | 
 |                       (when commit | 
 |                         (condition-case nil (delete-file ".git/MERGE_HEAD") (error nil)) | 
 |                         (condition-case nil (delete-file ".git/MERGE_MSG") (error nil)) | 
 |                         (with-current-buffer buffer (erase-buffer)) | 
 |                         (git-update-status-files (git-get-filenames files)) | 
 |                         (git-call-process nil "rerere") | 
 |                         (git-call-process nil "gc" "--auto") | 
 |                         (message "Committed %s." commit) | 
 |                         (git-run-hook "post-commit" nil))) | 
 |                   (message "Commit aborted.")))) | 
 |           (delete-file index-file)))))) | 
 |  | 
 |  | 
 | ;;;; Interactive functions | 
 | ;;;; ------------------------------------------------------------ | 
 |  | 
 | (defun git-mark-file () | 
 |   "Mark the file that the cursor is on and move to the next one." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (let* ((pos (ewoc-locate git-status)) | 
 |          (info (ewoc-data pos))) | 
 |     (setf (git-fileinfo->marked info) t) | 
 |     (ewoc-invalidate git-status pos) | 
 |     (ewoc-goto-next git-status 1))) | 
 |  | 
 | (defun git-unmark-file () | 
 |   "Unmark the file that the cursor is on and move to the next one." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (let* ((pos (ewoc-locate git-status)) | 
 |          (info (ewoc-data pos))) | 
 |     (setf (git-fileinfo->marked info) nil) | 
 |     (ewoc-invalidate git-status pos) | 
 |     (ewoc-goto-next git-status 1))) | 
 |  | 
 | (defun git-unmark-file-up () | 
 |   "Unmark the file that the cursor is on and move to the previous one." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (let* ((pos (ewoc-locate git-status)) | 
 |          (info (ewoc-data pos))) | 
 |     (setf (git-fileinfo->marked info) nil) | 
 |     (ewoc-invalidate git-status pos) | 
 |     (ewoc-goto-prev git-status 1))) | 
 |  | 
 | (defun git-mark-all () | 
 |   "Mark all files." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (ewoc-map (lambda (info) (unless (git-fileinfo->marked info) | 
 |                              (setf (git-fileinfo->marked info) t))) git-status) | 
 |   ; move back to goal column after invalidate | 
 |   (when goal-column (move-to-column goal-column))) | 
 |  | 
 | (defun git-unmark-all () | 
 |   "Unmark all files." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (ewoc-map (lambda (info) (when (git-fileinfo->marked info) | 
 |                              (setf (git-fileinfo->marked info) nil) | 
 |                              t)) git-status) | 
 |   ; move back to goal column after invalidate | 
 |   (when goal-column (move-to-column goal-column))) | 
 |  | 
 | (defun git-toggle-all-marks () | 
 |   "Toggle all file marks." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (ewoc-map (lambda (info) (setf (git-fileinfo->marked info) (not (git-fileinfo->marked info))) t) git-status) | 
 |   ; move back to goal column after invalidate | 
 |   (when goal-column (move-to-column goal-column))) | 
 |  | 
 | (defun git-next-file (&optional n) | 
 |   "Move the selection down N files." | 
 |   (interactive "p") | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (ewoc-goto-next git-status n)) | 
 |  | 
 | (defun git-prev-file (&optional n) | 
 |   "Move the selection up N files." | 
 |   (interactive "p") | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (ewoc-goto-prev git-status n)) | 
 |  | 
 | (defun git-next-unmerged-file (&optional n) | 
 |   "Move the selection down N unmerged files." | 
 |   (interactive "p") | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (let* ((last (ewoc-locate git-status)) | 
 |          (node (ewoc-next git-status last))) | 
 |     (while (and node (> n 0)) | 
 |       (when (eq 'unmerged (git-fileinfo->state (ewoc-data node))) | 
 |         (setq n (1- n)) | 
 |         (setq last node)) | 
 |       (setq node (ewoc-next git-status node))) | 
 |     (ewoc-goto-node git-status last))) | 
 |  | 
 | (defun git-prev-unmerged-file (&optional n) | 
 |   "Move the selection up N unmerged files." | 
 |   (interactive "p") | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (let* ((last (ewoc-locate git-status)) | 
 |          (node (ewoc-prev git-status last))) | 
 |     (while (and node (> n 0)) | 
 |       (when (eq 'unmerged (git-fileinfo->state (ewoc-data node))) | 
 |         (setq n (1- n)) | 
 |         (setq last node)) | 
 |       (setq node (ewoc-prev git-status node))) | 
 |     (ewoc-goto-node git-status last))) | 
 |  | 
 | (defun git-insert-file (file) | 
 |   "Insert file(s) into the git-status buffer." | 
 |   (interactive "fInsert file: ") | 
 |   (git-update-status-files (list (file-relative-name file)))) | 
 |  | 
 | (defun git-add-file () | 
 |   "Add marked file(s) to the index cache." | 
 |   (interactive) | 
 |   (let ((files (git-get-filenames (git-marked-files-state 'unknown 'ignored)))) | 
 |     ;; FIXME: add support for directories | 
 |     (unless files | 
 |       (push (file-relative-name (read-file-name "File to add: " nil nil t)) files)) | 
 |     (when (apply 'git-call-process-display-error "update-index" "--add" "--" files) | 
 |       (git-update-status-files files) | 
 |       (git-success-message "Added" files)))) | 
 |  | 
 | (defun git-ignore-file () | 
 |   "Add marked file(s) to the ignore list." | 
 |   (interactive) | 
 |   (let ((files (git-get-filenames (git-marked-files-state 'unknown)))) | 
 |     (unless files | 
 |       (push (file-relative-name (read-file-name "File to ignore: " nil nil t)) files)) | 
 |     (dolist (f files) (git-append-to-ignore f)) | 
 |     (git-update-status-files files) | 
 |     (git-success-message "Ignored" files))) | 
 |  | 
 | (defun git-remove-file () | 
 |   "Remove the marked file(s)." | 
 |   (interactive) | 
 |   (let ((files (git-get-filenames (git-marked-files-state 'added 'modified 'unknown 'uptodate 'ignored)))) | 
 |     (unless files | 
 |       (push (file-relative-name (read-file-name "File to remove: " nil nil t)) files)) | 
 |     (if (yes-or-no-p | 
 |          (format "Remove %d file%s? " (length files) (if (> (length files) 1) "s" ""))) | 
 |         (progn | 
 |           (dolist (name files) | 
 |             (ignore-errors | 
 |               (if (file-directory-p name) | 
 |                   (delete-directory name) | 
 |                 (delete-file name)))) | 
 |           (when (apply 'git-call-process-display-error "update-index" "--remove" "--" files) | 
 |             (git-update-status-files files) | 
 |             (git-success-message "Removed" files))) | 
 |       (message "Aborting")))) | 
 |  | 
 | (defun git-revert-file () | 
 |   "Revert changes to the marked file(s)." | 
 |   (interactive) | 
 |   (let ((files (git-marked-files-state 'added 'deleted 'modified 'unmerged)) | 
 |         added modified) | 
 |     (when (and files | 
 |                (yes-or-no-p | 
 |                 (format "Revert %d file%s? " (length files) (if (> (length files) 1) "s" "")))) | 
 |       (dolist (info files) | 
 |         (case (git-fileinfo->state info) | 
 |           ('added (push (git-fileinfo->name info) added)) | 
 |           ('deleted (push (git-fileinfo->name info) modified)) | 
 |           ('unmerged (push (git-fileinfo->name info) modified)) | 
 |           ('modified (push (git-fileinfo->name info) modified)))) | 
 |       ;; check if a buffer contains one of the files and isn't saved | 
 |       (dolist (file modified) | 
 |         (let ((buffer (get-file-buffer file))) | 
 |           (when (and buffer (buffer-modified-p buffer)) | 
 |             (error "Buffer %s is modified. Please kill or save modified buffers before reverting." (buffer-name buffer))))) | 
 |       (let ((ok (and | 
 |                  (or (not added) | 
 |                      (apply 'git-call-process-display-error "update-index" "--force-remove" "--" added)) | 
 |                  (or (not modified) | 
 |                      (apply 'git-call-process-display-error "checkout" "HEAD" modified))))) | 
 |         (git-update-status-files (append added modified)) | 
 |         (when ok | 
 |           (dolist (file modified) | 
 |             (let ((buffer (get-file-buffer file))) | 
 |               (when buffer (with-current-buffer buffer (revert-buffer t t t))))) | 
 |           (git-success-message "Reverted" (git-get-filenames files))))))) | 
 |  | 
 | (defun git-resolve-file () | 
 |   "Resolve conflicts in marked file(s)." | 
 |   (interactive) | 
 |   (let ((files (git-get-filenames (git-marked-files-state 'unmerged)))) | 
 |     (when files | 
 |       (when (apply 'git-call-process-display-error "update-index" "--" files) | 
 |         (git-update-status-files files) | 
 |         (git-success-message "Resolved" files))))) | 
 |  | 
 | (defun git-remove-handled () | 
 |   "Remove handled files from the status list." | 
 |   (interactive) | 
 |   (ewoc-filter git-status | 
 |                (lambda (info) | 
 |                  (case (git-fileinfo->state info) | 
 |                    ('ignored git-show-ignored) | 
 |                    ('uptodate git-show-uptodate) | 
 |                    ('unknown git-show-unknown) | 
 |                    (t t)))) | 
 |   (unless (ewoc-nth git-status 0)  ; refresh header if list is empty | 
 |     (git-refresh-ewoc-hf git-status))) | 
 |  | 
 | (defun git-toggle-show-uptodate () | 
 |   "Toogle the option for showing up-to-date files." | 
 |   (interactive) | 
 |   (if (setq git-show-uptodate (not git-show-uptodate)) | 
 |       (git-refresh-status) | 
 |     (git-remove-handled))) | 
 |  | 
 | (defun git-toggle-show-ignored () | 
 |   "Toogle the option for showing ignored files." | 
 |   (interactive) | 
 |   (if (setq git-show-ignored (not git-show-ignored)) | 
 |       (progn | 
 |         (message "Inserting ignored files...") | 
 |         (git-run-ls-files-with-excludes git-status nil 'ignored "-o" "-i") | 
 |         (git-refresh-files) | 
 |         (git-refresh-ewoc-hf git-status) | 
 |         (message "Inserting ignored files...done")) | 
 |     (git-remove-handled))) | 
 |  | 
 | (defun git-toggle-show-unknown () | 
 |   "Toogle the option for showing unknown files." | 
 |   (interactive) | 
 |   (if (setq git-show-unknown (not git-show-unknown)) | 
 |       (progn | 
 |         (message "Inserting unknown files...") | 
 |         (git-run-ls-files-with-excludes git-status nil 'unknown "-o") | 
 |         (git-refresh-files) | 
 |         (git-refresh-ewoc-hf git-status) | 
 |         (message "Inserting unknown files...done")) | 
 |     (git-remove-handled))) | 
 |  | 
 | (defun git-expand-directory (info) | 
 |   "Expand the directory represented by INFO to list its files." | 
 |   (when (eq (lsh (git-fileinfo->new-perm info) -9) ?\110) | 
 |     (let ((dir (git-fileinfo->name info))) | 
 |       (git-set-filenames-state git-status (list dir) nil) | 
 |       (git-run-ls-files-with-excludes git-status (list (concat dir "/")) 'unknown "-o") | 
 |       (git-refresh-files) | 
 |       (git-refresh-ewoc-hf git-status) | 
 |       t))) | 
 |  | 
 | (defun git-setup-diff-buffer (buffer) | 
 |   "Setup a buffer for displaying a diff." | 
 |   (let ((dir default-directory)) | 
 |     (with-current-buffer buffer | 
 |       (diff-mode) | 
 |       (goto-char (point-min)) | 
 |       (setq default-directory dir) | 
 |       (setq buffer-read-only t))) | 
 |   (display-buffer buffer) | 
 |   ; shrink window only if it displays the status buffer | 
 |   (when (eq (window-buffer) (current-buffer)) | 
 |     (shrink-window-if-larger-than-buffer))) | 
 |  | 
 | (defun git-diff-file () | 
 |   "Diff the marked file(s) against HEAD." | 
 |   (interactive) | 
 |   (let ((files (git-marked-files))) | 
 |     (git-setup-diff-buffer | 
 |      (apply #'git-run-command-buffer "*git-diff*" "diff-index" "-p" "-M" "HEAD" "--" (git-get-filenames files))))) | 
 |  | 
 | (defun git-diff-file-merge-head (arg) | 
 |   "Diff the marked file(s) against the first merge head (or the nth one with a numeric prefix)." | 
 |   (interactive "p") | 
 |   (let ((files (git-marked-files)) | 
 |         (merge-heads (git-get-merge-heads))) | 
 |     (unless merge-heads (error "No merge in progress")) | 
 |     (git-setup-diff-buffer | 
 |      (apply #'git-run-command-buffer "*git-diff*" "diff-index" "-p" "-M" | 
 |             (or (nth (1- arg) merge-heads) "HEAD") "--" (git-get-filenames files))))) | 
 |  | 
 | (defun git-diff-unmerged-file (stage) | 
 |   "Diff the marked unmerged file(s) against the specified stage." | 
 |   (let ((files (git-marked-files))) | 
 |     (git-setup-diff-buffer | 
 |      (apply #'git-run-command-buffer "*git-diff*" "diff-files" "-p" stage "--" (git-get-filenames files))))) | 
 |  | 
 | (defun git-diff-file-base () | 
 |   "Diff the marked unmerged file(s) against the common base file." | 
 |   (interactive) | 
 |   (git-diff-unmerged-file "-1")) | 
 |  | 
 | (defun git-diff-file-mine () | 
 |   "Diff the marked unmerged file(s) against my pre-merge version." | 
 |   (interactive) | 
 |   (git-diff-unmerged-file "-2")) | 
 |  | 
 | (defun git-diff-file-other () | 
 |   "Diff the marked unmerged file(s) against the other's pre-merge version." | 
 |   (interactive) | 
 |   (git-diff-unmerged-file "-3")) | 
 |  | 
 | (defun git-diff-file-combined () | 
 |   "Do a combined diff of the marked unmerged file(s)." | 
 |   (interactive) | 
 |   (git-diff-unmerged-file "-c")) | 
 |  | 
 | (defun git-diff-file-idiff () | 
 |   "Perform an interactive diff on the current file." | 
 |   (interactive) | 
 |   (let ((files (git-marked-files-state 'added 'deleted 'modified))) | 
 |     (unless (eq 1 (length files)) | 
 |       (error "Cannot perform an interactive diff on multiple files.")) | 
 |     (let* ((filename (car (git-get-filenames files))) | 
 |            (buff1 (find-file-noselect filename)) | 
 |            (buff2 (git-run-command-buffer (concat filename ".~HEAD~") "cat-file" "blob" (concat "HEAD:" filename)))) | 
 |       (ediff-buffers buff1 buff2)))) | 
 |  | 
 | (defun git-log-file () | 
 |   "Display a log of changes to the marked file(s)." | 
 |   (interactive) | 
 |   (let* ((files (git-marked-files)) | 
 |          (coding-system-for-read git-commits-coding-system) | 
 |          (buffer (apply #'git-run-command-buffer "*git-log*" "rev-list" "--pretty" "HEAD" "--" (git-get-filenames files)))) | 
 |     (with-current-buffer buffer | 
 |       ; (git-log-mode)  FIXME: implement log mode | 
 |       (goto-char (point-min)) | 
 |       (setq buffer-read-only t)) | 
 |     (display-buffer buffer))) | 
 |  | 
 | (defun git-log-edit-files () | 
 |   "Return a list of marked files for use in the log-edit buffer." | 
 |   (with-current-buffer log-edit-parent-buffer | 
 |     (git-get-filenames (git-marked-files-state 'added 'deleted 'modified)))) | 
 |  | 
 | (defun git-log-edit-diff () | 
 |   "Run a diff of the current files being committed from a log-edit buffer." | 
 |   (with-current-buffer log-edit-parent-buffer | 
 |     (git-diff-file))) | 
 |  | 
 | (defun git-append-sign-off (name email) | 
 |   "Append a Signed-off-by entry to the current buffer, avoiding duplicates." | 
 |   (let ((sign-off (format "Signed-off-by: %s <%s>" name email)) | 
 |         (case-fold-search t)) | 
 |     (goto-char (point-min)) | 
 |     (unless (re-search-forward (concat "^" (regexp-quote sign-off)) nil t) | 
 |       (goto-char (point-min)) | 
 |       (unless (re-search-forward "^Signed-off-by: " nil t) | 
 |         (setq sign-off (concat "\n" sign-off))) | 
 |       (goto-char (point-max)) | 
 |       (insert sign-off "\n")))) | 
 |  | 
 | (defun git-setup-log-buffer (buffer &optional merge-heads author-name author-email subject date msg) | 
 |   "Setup the log buffer for a commit." | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (let ((dir default-directory) | 
 |         (committer-name (git-get-committer-name)) | 
 |         (committer-email (git-get-committer-email)) | 
 |         (sign-off git-append-signed-off-by)) | 
 |     (with-current-buffer buffer | 
 |       (cd dir) | 
 |       (erase-buffer) | 
 |       (insert | 
 |        (propertize | 
 |         (format "Author: %s <%s>\n%s%s" | 
 |                 (or author-name committer-name) | 
 |                 (or author-email committer-email) | 
 |                 (if date (format "Date: %s\n" date) "") | 
 |                 (if merge-heads | 
 |                     (format "Merge: %s\n" | 
 |                             (mapconcat 'identity merge-heads " ")) | 
 |                   "")) | 
 |         'face 'git-header-face) | 
 |        (propertize git-log-msg-separator 'face 'git-separator-face) | 
 |        "\n") | 
 |       (when subject (insert subject "\n\n")) | 
 |       (cond (msg (insert msg "\n")) | 
 |             ((file-readable-p ".git/rebase-apply/msg") | 
 |              (insert-file-contents ".git/rebase-apply/msg")) | 
 |             ((file-readable-p ".git/MERGE_MSG") | 
 |              (insert-file-contents ".git/MERGE_MSG"))) | 
 |       ; delete empty lines at end | 
 |       (goto-char (point-min)) | 
 |       (when (re-search-forward "\n+\\'" nil t) | 
 |         (replace-match "\n" t t)) | 
 |       (when sign-off (git-append-sign-off committer-name committer-email))) | 
 |     buffer)) | 
 |  | 
 | (defun git-commit-file () | 
 |   "Commit the marked file(s), asking for a commit message." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (when (git-run-pre-commit-hook) | 
 |     (let ((buffer (get-buffer-create "*git-commit*")) | 
 |           (coding-system (git-get-commits-coding-system)) | 
 |           author-name author-email subject date) | 
 |       (when (eq 0 (buffer-size buffer)) | 
 |         (when (file-readable-p ".git/rebase-apply/info") | 
 |           (with-temp-buffer | 
 |             (insert-file-contents ".git/rebase-apply/info") | 
 |             (goto-char (point-min)) | 
 |             (when (re-search-forward "^Author: \\(.*\\)\nEmail: \\(.*\\)$" nil t) | 
 |               (setq author-name (match-string 1)) | 
 |               (setq author-email (match-string 2))) | 
 |             (goto-char (point-min)) | 
 |             (when (re-search-forward "^Subject: \\(.*\\)$" nil t) | 
 |               (setq subject (match-string 1))) | 
 |             (goto-char (point-min)) | 
 |             (when (re-search-forward "^Date: \\(.*\\)$" nil t) | 
 |               (setq date (match-string 1))))) | 
 |         (git-setup-log-buffer buffer (git-get-merge-heads) author-name author-email subject date)) | 
 |       (if (boundp 'log-edit-diff-function) | 
 | 	  (log-edit 'git-do-commit nil '((log-edit-listfun . git-log-edit-files) | 
 | 					 (log-edit-diff-function . git-log-edit-diff)) buffer) | 
 | 	(log-edit 'git-do-commit nil 'git-log-edit-files buffer)) | 
 |       (setq font-lock-keywords (font-lock-compile-keywords git-log-edit-font-lock-keywords)) | 
 |       (setq buffer-file-coding-system coding-system) | 
 |       (re-search-forward (regexp-quote (concat git-log-msg-separator "\n")) nil t)))) | 
 |  | 
 | (defun git-setup-commit-buffer (commit) | 
 |   "Setup the commit buffer with the contents of COMMIT." | 
 |   (let (parents author-name author-email subject date msg) | 
 |     (with-temp-buffer | 
 |       (let ((coding-system (git-get-logoutput-coding-system))) | 
 |         (git-call-process t "log" "-1" "--pretty=medium" "--abbrev=40" commit) | 
 |         (goto-char (point-min)) | 
 |         (when (re-search-forward "^Merge: *\\(.*\\)$" nil t) | 
 |           (setq parents (cdr (split-string (match-string 1) " +")))) | 
 |         (when (re-search-forward "^Author: *\\(.*\\) <\\(.*\\)>$" nil t) | 
 |           (setq author-name (match-string 1)) | 
 |           (setq author-email (match-string 2))) | 
 |         (when (re-search-forward "^Date: *\\(.*\\)$" nil t) | 
 |           (setq date (match-string 1))) | 
 |         (while (re-search-forward "^    \\(.*\\)$" nil t) | 
 |           (push (match-string 1) msg)) | 
 |         (setq msg (nreverse msg)) | 
 |         (setq subject (pop msg)) | 
 |         (while (and msg (zerop (length (car msg))) (pop msg))))) | 
 |     (git-setup-log-buffer (get-buffer-create "*git-commit*") | 
 |                           parents author-name author-email subject date | 
 |                           (mapconcat #'identity msg "\n")))) | 
 |  | 
 | (defun git-get-commit-files (commit) | 
 |   "Retrieve the list of files modified by COMMIT." | 
 |   (let (files) | 
 |     (with-temp-buffer | 
 |       (git-call-process t "diff-tree" "-m" "-r" "-z" "--name-only" "--no-commit-id" "--root" commit) | 
 |       (goto-char (point-min)) | 
 |       (while (re-search-forward "\\([^\0]*\\)\0" nil t 1) | 
 |         (push (match-string 1) files))) | 
 |     files)) | 
 |  | 
 | (defun git-amend-commit () | 
 |   "Undo the last commit on HEAD, and set things up to commit an | 
 | amended version of it." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (when (git-empty-db-p) (error "No commit to amend.")) | 
 |   (let* ((commit (git-rev-parse "HEAD")) | 
 |          (files (git-get-commit-files commit))) | 
 |     (when (if (git-rev-parse "HEAD^") | 
 |               (git-call-process-display-error "reset" "--soft" "HEAD^") | 
 |             (and (git-update-ref "ORIG_HEAD" commit) | 
 |                  (git-update-ref "HEAD" nil commit))) | 
 |       (git-update-status-files files t) | 
 |       (git-setup-commit-buffer commit) | 
 |       (git-commit-file)))) | 
 |  | 
 | (defun git-find-file () | 
 |   "Visit the current file in its own buffer." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (let ((info (ewoc-data (ewoc-locate git-status)))) | 
 |     (unless (git-expand-directory info) | 
 |       (find-file (git-fileinfo->name info)) | 
 |       (when (eq 'unmerged (git-fileinfo->state info)) | 
 |         (smerge-mode 1))))) | 
 |  | 
 | (defun git-find-file-other-window () | 
 |   "Visit the current file in its own buffer in another window." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (let ((info (ewoc-data (ewoc-locate git-status)))) | 
 |     (find-file-other-window (git-fileinfo->name info)) | 
 |     (when (eq 'unmerged (git-fileinfo->state info)) | 
 |       (smerge-mode)))) | 
 |  | 
 | (defun git-find-file-imerge () | 
 |   "Visit the current file in interactive merge mode." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (let ((info (ewoc-data (ewoc-locate git-status)))) | 
 |     (find-file (git-fileinfo->name info)) | 
 |     (smerge-ediff))) | 
 |  | 
 | (defun git-view-file () | 
 |   "View the current file in its own buffer." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (let ((info (ewoc-data (ewoc-locate git-status)))) | 
 |     (view-file (git-fileinfo->name info)))) | 
 |  | 
 | (defun git-refresh-status () | 
 |   "Refresh the git status buffer." | 
 |   (interactive) | 
 |   (unless git-status (error "Not in git-status buffer.")) | 
 |   (message "Refreshing git status...") | 
 |   (git-update-status-files) | 
 |   (message "Refreshing git status...done")) | 
 |  | 
 | (defun git-status-quit () | 
 |   "Quit git-status mode." | 
 |   (interactive) | 
 |   (bury-buffer)) | 
 |  | 
 | ;;;; Major Mode | 
 | ;;;; ------------------------------------------------------------ | 
 |  | 
 | (defvar git-status-mode-hook nil | 
 |   "Run after `git-status-mode' is setup.") | 
 |  | 
 | (defvar git-status-mode-map nil | 
 |   "Keymap for git major mode.") | 
 |  | 
 | (defvar git-status nil | 
 |   "List of all files managed by the git-status mode.") | 
 |  | 
 | (unless git-status-mode-map | 
 |   (let ((map (make-keymap)) | 
 |         (commit-map (make-sparse-keymap)) | 
 |         (diff-map (make-sparse-keymap)) | 
 |         (toggle-map (make-sparse-keymap))) | 
 |     (suppress-keymap map) | 
 |     (define-key map "?"   'git-help) | 
 |     (define-key map "h"   'git-help) | 
 |     (define-key map " "   'git-next-file) | 
 |     (define-key map "a"   'git-add-file) | 
 |     (define-key map "c"   'git-commit-file) | 
 |     (define-key map "\C-c" commit-map) | 
 |     (define-key map "d"    diff-map) | 
 |     (define-key map "="   'git-diff-file) | 
 |     (define-key map "f"   'git-find-file) | 
 |     (define-key map "\r"  'git-find-file) | 
 |     (define-key map "g"   'git-refresh-status) | 
 |     (define-key map "i"   'git-ignore-file) | 
 |     (define-key map "I"   'git-insert-file) | 
 |     (define-key map "l"   'git-log-file) | 
 |     (define-key map "m"   'git-mark-file) | 
 |     (define-key map "M"   'git-mark-all) | 
 |     (define-key map "n"   'git-next-file) | 
 |     (define-key map "N"   'git-next-unmerged-file) | 
 |     (define-key map "o"   'git-find-file-other-window) | 
 |     (define-key map "p"   'git-prev-file) | 
 |     (define-key map "P"   'git-prev-unmerged-file) | 
 |     (define-key map "q"   'git-status-quit) | 
 |     (define-key map "r"   'git-remove-file) | 
 |     (define-key map "R"   'git-resolve-file) | 
 |     (define-key map "t"    toggle-map) | 
 |     (define-key map "T"   'git-toggle-all-marks) | 
 |     (define-key map "u"   'git-unmark-file) | 
 |     (define-key map "U"   'git-revert-file) | 
 |     (define-key map "v"   'git-view-file) | 
 |     (define-key map "x"   'git-remove-handled) | 
 |     (define-key map "\C-?" 'git-unmark-file-up) | 
 |     (define-key map "\M-\C-?" 'git-unmark-all) | 
 |     ; the commit submap | 
 |     (define-key commit-map "\C-a" 'git-amend-commit) | 
 |     ; the diff submap | 
 |     (define-key diff-map "b" 'git-diff-file-base) | 
 |     (define-key diff-map "c" 'git-diff-file-combined) | 
 |     (define-key diff-map "=" 'git-diff-file) | 
 |     (define-key diff-map "e" 'git-diff-file-idiff) | 
 |     (define-key diff-map "E" 'git-find-file-imerge) | 
 |     (define-key diff-map "h" 'git-diff-file-merge-head) | 
 |     (define-key diff-map "m" 'git-diff-file-mine) | 
 |     (define-key diff-map "o" 'git-diff-file-other) | 
 |     ; the toggle submap | 
 |     (define-key toggle-map "u" 'git-toggle-show-uptodate) | 
 |     (define-key toggle-map "i" 'git-toggle-show-ignored) | 
 |     (define-key toggle-map "k" 'git-toggle-show-unknown) | 
 |     (define-key toggle-map "m" 'git-toggle-all-marks) | 
 |     (setq git-status-mode-map map)) | 
 |   (easy-menu-define git-menu git-status-mode-map | 
 |     "Git Menu" | 
 |     `("Git" | 
 |       ["Refresh" git-refresh-status t] | 
 |       ["Commit" git-commit-file t] | 
 |       ("Merge" | 
 | 	["Next Unmerged File" git-next-unmerged-file t] | 
 | 	["Prev Unmerged File" git-prev-unmerged-file t] | 
 | 	["Mark as Resolved" git-resolve-file t] | 
 | 	["Interactive Merge File" git-find-file-imerge t] | 
 | 	["Diff Against Common Base File" git-diff-file-base t] | 
 | 	["Diff Combined" git-diff-file-combined t] | 
 | 	["Diff Against Merge Head" git-diff-file-merge-head t] | 
 | 	["Diff Against Mine" git-diff-file-mine t] | 
 | 	["Diff Against Other" git-diff-file-other t]) | 
 |       "--------" | 
 |       ["Add File" git-add-file t] | 
 |       ["Revert File" git-revert-file t] | 
 |       ["Ignore File" git-ignore-file t] | 
 |       ["Remove File" git-remove-file t] | 
 |       ["Insert File" git-insert-file t] | 
 |       "--------" | 
 |       ["Find File" git-find-file t] | 
 |       ["View File" git-view-file t] | 
 |       ["Diff File" git-diff-file t] | 
 |       ["Interactive Diff File" git-diff-file-idiff t] | 
 |       ["Log" git-log-file t] | 
 |       "--------" | 
 |       ["Mark" git-mark-file t] | 
 |       ["Mark All" git-mark-all t] | 
 |       ["Unmark" git-unmark-file t] | 
 |       ["Unmark All" git-unmark-all t] | 
 |       ["Toggle All Marks" git-toggle-all-marks t] | 
 |       ["Hide Handled Files" git-remove-handled t] | 
 |       "--------" | 
 |       ["Show Uptodate Files" git-toggle-show-uptodate :style toggle :selected git-show-uptodate] | 
 |       ["Show Ignored Files" git-toggle-show-ignored :style toggle :selected git-show-ignored] | 
 |       ["Show Unknown Files" git-toggle-show-unknown :style toggle :selected git-show-unknown] | 
 |       "--------" | 
 |       ["Quit" git-status-quit t]))) | 
 |  | 
 |  | 
 | ;; git mode should only run in the *git status* buffer | 
 | (put 'git-status-mode 'mode-class 'special) | 
 |  | 
 | (defun git-status-mode () | 
 |   "Major mode for interacting with Git. | 
 | Commands: | 
 | \\{git-status-mode-map}" | 
 |   (kill-all-local-variables) | 
 |   (buffer-disable-undo) | 
 |   (setq mode-name "git status" | 
 |         major-mode 'git-status-mode | 
 |         goal-column 17 | 
 |         buffer-read-only t) | 
 |   (use-local-map git-status-mode-map) | 
 |   (let ((buffer-read-only nil)) | 
 |     (erase-buffer) | 
 |   (let ((status (ewoc-create 'git-fileinfo-prettyprint "" ""))) | 
 |     (set (make-local-variable 'git-status) status)) | 
 |   (set (make-local-variable 'list-buffers-directory) default-directory) | 
 |   (make-local-variable 'git-show-uptodate) | 
 |   (make-local-variable 'git-show-ignored) | 
 |   (make-local-variable 'git-show-unknown) | 
 |   (run-hooks 'git-status-mode-hook))) | 
 |  | 
 | (defun git-find-status-buffer (dir) | 
 |   "Find the git status buffer handling a specified directory." | 
 |   (let ((list (buffer-list)) | 
 |         (fulldir (expand-file-name dir)) | 
 |         found) | 
 |     (while (and list (not found)) | 
 |       (let ((buffer (car list))) | 
 |         (with-current-buffer buffer | 
 |           (when (and list-buffers-directory | 
 |                      (string-equal fulldir (expand-file-name list-buffers-directory)) | 
 | 		     (eq major-mode 'git-status-mode)) | 
 |             (setq found buffer)))) | 
 |       (setq list (cdr list))) | 
 |     found)) | 
 |  | 
 | (defun git-status (dir) | 
 |   "Entry point into git-status mode." | 
 |   (interactive "DSelect directory: ") | 
 |   (setq dir (git-get-top-dir dir)) | 
 |   (if (file-directory-p (concat (file-name-as-directory dir) ".git")) | 
 |       (let ((buffer (or (and git-reuse-status-buffer (git-find-status-buffer dir)) | 
 |                         (create-file-buffer (expand-file-name "*git-status*" dir))))) | 
 |         (switch-to-buffer buffer) | 
 |         (cd dir) | 
 |         (git-status-mode) | 
 |         (git-refresh-status) | 
 |         (goto-char (point-min)) | 
 |         (add-hook 'after-save-hook 'git-update-saved-file)) | 
 |     (message "%s is not a git working tree." dir))) | 
 |  | 
 | (defun git-update-saved-file () | 
 |   "Update the corresponding git-status buffer when a file is saved. | 
 | Meant to be used in `after-save-hook'." | 
 |   (let* ((file (expand-file-name buffer-file-name)) | 
 |          (dir (condition-case nil (git-get-top-dir (file-name-directory file)) (error nil))) | 
 |          (buffer (and dir (git-find-status-buffer dir)))) | 
 |     (when buffer | 
 |       (with-current-buffer buffer | 
 |         (let ((filename (file-relative-name file dir))) | 
 |           ; skip files located inside the .git directory | 
 |           (unless (string-match "^\\.git/" filename) | 
 |             (git-call-process nil "add" "--refresh" "--" filename) | 
 |             (git-update-status-files (list filename)))))))) | 
 |  | 
 | (defun git-help () | 
 |   "Display help for Git mode." | 
 |   (interactive) | 
 |   (describe-function 'git-status-mode)) | 
 |  | 
 | (provide 'git) | 
 | ;;; git.el ends here |