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1 files changed, 881 insertions, 0 deletions

diff --git a/configs/shared/emacs/.emacs.d/elpa/git-commit-20180713.1444/git-commit.el b/configs/shared/emacs/.emacs.d/elpa/git-commit-20180713.1444/git-commit.el
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+;;; git-commit.el --- Edit Git commit messages  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2010-2018  The Magit Project Contributors
+;;
+;; You should have received a copy of the AUTHORS.md file which
+;; lists all contributors.  If not, see http://magit.vc/authors.
+
+;; Authors: Jonas Bernoulli <jonas@bernoul.li>
+;;	Sebastian Wiesner <lunaryorn@gmail.com>
+;;	Florian Ragwitz <rafl@debian.org>
+;;	Marius Vollmer <marius.vollmer@gmail.com>
+;; Maintainer: Jonas Bernoulli <jonas@bernoul.li>
+
+;; Package-Requires: ((emacs "25.1") (dash "20180413") (with-editor "20180414"))
+;; Package-Version: 20180713.1444
+;; Keywords: git tools vc
+;; Homepage: https://github.com/magit/magit
+
+;; This file is not part of GNU Emacs.
+
+;; This file 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, or (at your option)
+;; any later version.
+
+;; This file 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 file.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; This package assists the user in writing good Git commit messages.
+
+;; While Git allows for the message to be provided on the command
+;; line, it is preferable to tell Git to create the commit without
+;; actually passing it a message.  Git then invokes the `$GIT_EDITOR'
+;; (or if that is undefined `$EDITOR') asking the user to provide the
+;; message by editing the file ".git/COMMIT_EDITMSG" (or another file
+;; in that directory, e.g. ".git/MERGE_MSG" for merge commits).
+
+;; When `global-git-commit-mode' is enabled, which it is by default,
+;; then opening such a file causes the features described below, to
+;; be enabled in that buffer.  Normally this would be done using a
+;; major-mode but to allow the use of any major-mode, as the user sees
+;; fit, it is done here by running a setup function, which among other
+;; things turns on the preferred major-mode, by default `text-mode'.
+
+;; Git waits for the `$EDITOR' to finish and then either creates the
+;; commit using the contents of the file as commit message, or, if the
+;; editor process exited with a non-zero exit status, aborts without
+;; creating a commit.  Unfortunately Emacsclient (which is what Emacs
+;; users should be using as `$EDITOR' or at least as `$GIT_EDITOR')
+;; does not differentiate between "successfully" editing a file and
+;; aborting; not out of the box that is.
+
+;; By making use of the `with-editor' package this package provides
+;; both ways of finish an editing session.  In either case the file
+;; is saved, but Emacseditor's exit code differs.
+;;
+;;   C-c C-c  Finish the editing session successfully by returning
+;;            with exit code 0.  Git then creates the commit using
+;;            the message it finds in the file.
+;;
+;;   C-c C-k  Aborts the edit editing session by returning with exit
+;;            code 1.  Git then aborts the commit.
+
+;; Aborting the commit does not cause the message to be lost, but
+;; relying solely on the file not being tampered with is risky.  This
+;; package additionally stores all aborted messages for the duration
+;; of the current session (i.e. until you close Emacs).  To get back
+;; an aborted message use M-p and M-n while editing a message.
+;;
+;;   M-p      Replace the buffer contents with the previous message
+;;            from the message ring.  Of course only after storing
+;;            the current content there too.
+;;
+;;   M-n      Replace the buffer contents with the next message from
+;;            the message ring, after storing the current content.
+
+;; Some support for pseudo headers as used in some projects is
+;; provided by these commands:
+;;
+;;   C-c C-s  Insert a Signed-off-by header.
+;;   C-c C-a  Insert a Acked-by header.
+;;   C-c C-m  Insert a Modified-by header.
+;;   C-c C-t  Insert a Tested-by header.
+;;   C-c C-r  Insert a Reviewed-by header.
+;;   C-c C-o  Insert a Cc header.
+;;   C-c C-p  Insert a Reported-by header.
+;;   C-c M-s  Insert a Suggested-by header.
+
+;; When Git requests a commit message from the user, it does so by
+;; having her edit a file which initially contains some comments,
+;; instructing her what to do, and providing useful information, such
+;; as which files were modified.  These comments, even when left
+;; intact by the user, do not become part of the commit message.  This
+;; package ensures these comments are propertizes as such and further
+;; prettifies them by using different faces for various parts, such as
+;; files.
+
+;; Finally this package highlights style errors, like lines that are
+;; too long, or when the second line is not empty.  It may even nag
+;; you when you attempt to finish the commit without having fixed
+;; these issues.  The style checks and many other settings can easily
+;; be configured:
+;;
+;;   M-x customize-group RET git-commit RET
+
+;;; Code:
+;;;; Dependencies
+
+(require 'dash)
+(require 'log-edit)
+(require 'magit-git nil t)
+(require 'magit-utils nil t)
+(require 'ring)
+(require 'server)
+(require 'with-editor)
+
+(eval-when-compile (require 'recentf))
+
+;;;; Declarations
+
+(defvar diff-default-read-only)
+(defvar flyspell-generic-check-word-predicate)
+(defvar font-lock-beg)
+(defvar font-lock-end)
+
+(declare-function magit-expand-git-file-name "magit-git" (filename))
+(declare-function magit-list-local-branch-names "magit-git" ())
+(declare-function magit-list-remote-branch-names "magit-git"
+                  (&optional remote relative))
+
+;;; Options
+;;;; Variables
+
+(defgroup git-commit nil
+  "Edit Git commit messages."
+  :prefix "git-commit-"
+  :link '(info-link "(magit)Editing Commit Messages")
+  :group 'tools)
+
+;;;###autoload
+(define-minor-mode global-git-commit-mode
+  "Edit Git commit messages.
+This global mode arranges for `git-commit-setup' to be called
+when a Git commit message file is opened.  That usually happens
+when Git uses the Emacsclient as $GIT_EDITOR to have the user
+provide such a commit message."
+  :group 'git-commit
+  :type 'boolean
+  :global t
+  :init-value t
+  :initialize (lambda (symbol exp)
+                (custom-initialize-default symbol exp)
+                (when global-git-commit-mode
+                  (add-hook 'find-file-hook 'git-commit-setup-check-buffer)))
+  (if global-git-commit-mode
+      (add-hook  'find-file-hook 'git-commit-setup-check-buffer)
+    (remove-hook 'find-file-hook 'git-commit-setup-check-buffer)))
+
+(defcustom git-commit-major-mode 'text-mode
+  "Major mode used to edit Git commit messages.
+The major mode configured here is turned on by the minor mode
+`git-commit-mode'."
+  :group 'git-commit
+  :type '(choice (function-item text-mode)
+                 (const :tag "No major mode")))
+
+(defcustom git-commit-setup-hook
+  '(git-commit-save-message
+    git-commit-setup-changelog-support
+    git-commit-turn-on-auto-fill
+    git-commit-propertize-diff
+    with-editor-usage-message)
+  "Hook run at the end of `git-commit-setup'."
+  :group 'git-commit
+  :type 'hook
+  :get (and (featurep 'magit-utils) 'magit-hook-custom-get)
+  :options '(git-commit-save-message
+             git-commit-setup-changelog-support
+             git-commit-turn-on-auto-fill
+             git-commit-turn-on-flyspell
+             git-commit-propertize-diff
+             bug-reference-mode
+             with-editor-usage-message))
+
+(defcustom git-commit-finish-query-functions
+  '(git-commit-check-style-conventions)
+  "List of functions called to query before performing commit.
+
+The commit message buffer is current while the functions are
+called.  If any of them returns nil, then the commit is not
+performed and the buffer is not killed.  The user should then
+fix the issue and try again.
+
+The functions are called with one argument.  If it is non-nil,
+then that indicates that the user used a prefix argument to
+force finishing the session despite issues.  Functions should
+usually honor this wish and return non-nil."
+  :options '(git-commit-check-style-conventions)
+  :type 'hook
+  :group 'git-commit)
+
+(defcustom git-commit-style-convention-checks '(non-empty-second-line)
+  "List of checks performed by `git-commit-check-style-conventions'.
+Valid members are `non-empty-second-line' and `overlong-summary-line'.
+That function is a member of `git-commit-finish-query-functions'."
+  :options '(non-empty-second-line overlong-summary-line)
+  :type '(list :convert-widget custom-hook-convert-widget)
+  :group 'git-commit)
+
+(defcustom git-commit-summary-max-length 68
+  "Column beyond which characters in the summary lines are highlighted.
+
+The highlighting indicates that the summary is getting too long
+by some standards.  It does in no way imply that going over the
+limit a few characters or in some cases even many characters is
+anything that deserves shaming.  It's just a friendly reminder
+that if you can make the summary shorter, then you might want
+to consider doing so."
+  :group 'git-commit
+  :safe 'numberp
+  :type 'number)
+
+(defcustom git-commit-fill-column nil
+  "Override `fill-column' in commit message buffers.
+
+If this is non-nil, then it should be an integer.  If that is the
+case and the buffer-local value of `fill-column' is not already
+set by the time `git-commit-turn-on-auto-fill' is called as a
+member of `git-commit-setup-hook', then that function sets the
+buffer-local value of `fill-column' to the value of this option.
+
+This option exists mostly for historic reasons.  If you are not
+already using it, then you probably shouldn't start doing so."
+  :group 'git-commit
+  :safe 'numberp
+  :type '(choice (const :tag "use regular fill-column")
+                 number))
+
+(make-obsolete-variable 'git-commit-fill-column 'fill-column
+                        "Magit 2.11.0" 'set)
+
+(defcustom git-commit-known-pseudo-headers
+  '("Signed-off-by" "Acked-by" "Modified-by" "Cc"
+    "Suggested-by" "Reported-by" "Tested-by" "Reviewed-by")
+  "A list of Git pseudo headers to be highlighted."
+  :group 'git-commit
+  :safe (lambda (val) (and (listp val) (-all-p 'stringp val)))
+  :type '(repeat string))
+
+;;;; Faces
+
+(defgroup git-commit-faces nil
+  "Faces used for highlighting Git commit messages."
+  :prefix "git-commit-"
+  :group 'git-commit
+  :group 'faces)
+
+(defface git-commit-summary
+  '((t :inherit font-lock-type-face))
+  "Face used for the summary in commit messages."
+  :group 'git-commit-faces)
+
+(defface git-commit-overlong-summary
+  '((t :inherit font-lock-warning-face))
+  "Face used for the tail of overlong commit message summaries."
+  :group 'git-commit-faces)
+
+(defface git-commit-nonempty-second-line
+  '((t :inherit font-lock-warning-face))
+  "Face used for non-whitespace on the second line of commit messages."
+  :group 'git-commit-faces)
+
+(defface git-commit-note
+  '((t :inherit font-lock-string-face))
+  "Face used for notes in commit messages."
+  :group 'git-commit-faces)
+
+(defface git-commit-pseudo-header
+  '((t :inherit font-lock-string-face))
+  "Face used for pseudo headers in commit messages."
+  :group 'git-commit-faces)
+
+(defface git-commit-known-pseudo-header
+  '((t :inherit font-lock-keyword-face))
+  "Face used for the keywords of known pseudo headers in commit messages."
+  :group 'git-commit-faces)
+
+(defface git-commit-comment-branch-local
+  (if (featurep 'magit)
+      '((t :inherit magit-branch-local))
+    '((t :inherit font-lock-variable-name-face)))
+  "Face used for names of local branches in commit message comments."
+  :group 'git-commit-faces)
+
+(define-obsolete-face-alias 'git-commit-comment-branch
+  'git-commit-comment-branch-local "Git-Commit 2.12.0")
+
+(defface git-commit-comment-branch-remote
+  (if (featurep 'magit)
+      '((t :inherit magit-branch-remote))
+    '((t :inherit font-lock-variable-name-face)))
+  "Face used for names of remote branches in commit message comments.
+This is only used if Magit is available."
+  :group 'git-commit-faces)
+
+(defface git-commit-comment-detached
+  '((t :inherit git-commit-comment-branch-local))
+  "Face used for detached `HEAD' in commit message comments."
+  :group 'git-commit-faces)
+
+(defface git-commit-comment-heading
+  '((t :inherit git-commit-known-pseudo-header))
+  "Face used for headings in commit message comments."
+  :group 'git-commit-faces)
+
+(defface git-commit-comment-file
+  '((t :inherit git-commit-pseudo-header))
+  "Face used for file names in commit message comments."
+  :group 'git-commit-faces)
+
+(defface git-commit-comment-action
+  '((t :inherit bold))
+  "Face used for actions in commit message comments."
+  :group 'git-commit-faces)
+
+;;; Keymap
+
+(defvar git-commit-mode-map
+  (let ((map (make-sparse-keymap)))
+    (cond ((featurep 'jkl)
+           (define-key map (kbd "C-M-i") 'git-commit-prev-message)
+           (define-key map (kbd "C-M-k") 'git-commit-next-message))
+          (t
+           (define-key map (kbd "M-p") 'git-commit-prev-message)
+           (define-key map (kbd "M-n") 'git-commit-next-message)
+           ;; Old bindings to avoid confusion
+           (define-key map (kbd "C-c C-x a") 'git-commit-ack)
+           (define-key map (kbd "C-c C-x i") 'git-commit-suggested)
+           (define-key map (kbd "C-c C-x m") 'git-commit-modified)
+           (define-key map (kbd "C-c C-x o") 'git-commit-cc)
+           (define-key map (kbd "C-c C-x p") 'git-commit-reported)
+           (define-key map (kbd "C-c C-x r") 'git-commit-review)
+           (define-key map (kbd "C-c C-x s") 'git-commit-signoff)
+           (define-key map (kbd "C-c C-x t") 'git-commit-test)))
+    (define-key map (kbd "C-c C-a") 'git-commit-ack)
+    (define-key map (kbd "C-c C-i") 'git-commit-suggested)
+    (define-key map (kbd "C-c C-m") 'git-commit-modified)
+    (define-key map (kbd "C-c C-o") 'git-commit-cc)
+    (define-key map (kbd "C-c C-p") 'git-commit-reported)
+    (define-key map (kbd "C-c C-r") 'git-commit-review)
+    (define-key map (kbd "C-c C-s") 'git-commit-signoff)
+    (define-key map (kbd "C-c C-t") 'git-commit-test)
+    (define-key map (kbd "C-c M-s") 'git-commit-save-message)
+    map)
+  "Key map used by `git-commit-mode'.")
+
+;;; Menu
+
+(require 'easymenu)
+(easy-menu-define git-commit-mode-menu git-commit-mode-map
+  "Git Commit Mode Menu"
+  '("Commit"
+    ["Previous" git-commit-prev-message t]
+    ["Next" git-commit-next-message t]
+    "-"
+    ["Ack" git-commit-ack :active t
+     :help "Insert an 'Acked-by' header"]
+    ["Sign-Off" git-commit-signoff :active t
+     :help "Insert a 'Signed-off-by' header"]
+    ["Modified-by" git-commit-modified :active t
+     :help "Insert a 'Modified-by' header"]
+    ["Tested-by" git-commit-test :active t
+     :help "Insert a 'Tested-by' header"]
+    ["Reviewed-by" git-commit-review :active t
+     :help "Insert a 'Reviewed-by' header"]
+    ["CC" git-commit-cc t
+     :help "Insert a 'Cc' header"]
+    ["Reported" git-commit-reported :active t
+     :help "Insert a 'Reported-by' header"]
+    ["Suggested" git-commit-suggested t
+     :help "Insert a 'Suggested-by' header"]
+    "-"
+    ["Save" git-commit-save-message t]
+    ["Cancel" with-editor-cancel t]
+    ["Commit" with-editor-finish t]))
+
+;;; Hooks
+
+;;;###autoload
+(defconst git-commit-filename-regexp "/\\(\
+\\(\\(COMMIT\\|NOTES\\|PULLREQ\\|TAG\\)_EDIT\\|MERGE_\\|\\)MSG\
+\\|\\(BRANCH\\|EDIT\\)_DESCRIPTION\\)\\'")
+
+(eval-after-load 'recentf
+  '(add-to-list 'recentf-exclude git-commit-filename-regexp))
+
+(add-to-list 'with-editor-file-name-history-exclude git-commit-filename-regexp)
+
+(defun git-commit-setup-font-lock-in-buffer ()
+  (and buffer-file-name
+       (string-match-p git-commit-filename-regexp buffer-file-name)
+       (git-commit-setup-font-lock)))
+
+(add-hook 'after-change-major-mode-hook 'git-commit-setup-font-lock-in-buffer)
+
+;;;###autoload
+(defun git-commit-setup-check-buffer ()
+  (and buffer-file-name
+       (string-match-p git-commit-filename-regexp buffer-file-name)
+       (git-commit-setup)))
+
+(defvar git-commit-mode)
+
+;;;###autoload
+(defun git-commit-setup ()
+  ;; cygwin git will pass a cygwin path (/cygdrive/c/foo/.git/...),
+  ;; try to handle this in window-nt Emacs.
+  (--when-let
+      (and (eq system-type 'windows-nt)
+           (not (file-accessible-directory-p default-directory))
+           (if (require 'magit-git nil t)
+               ;; Emacs prepends a "c:".
+               (magit-expand-git-file-name (substring buffer-file-name 2))
+             ;; Fallback if we can't load `magit-git'.
+             (and (string-match "\\`[a-z]:/\\(cygdrive/\\)?\\([a-z]\\)/\\(.*\\)"
+                                buffer-file-name)
+                  (concat (match-string 2 buffer-file-name) ":/"
+                          (match-string 3 buffer-file-name)))))
+    (when (file-accessible-directory-p (file-name-directory it))
+      (find-alternate-file it)))
+  ;; Pretend that git-commit-mode is a major-mode,
+  ;; so that directory-local settings can be used.
+  (let ((default-directory
+          (if (file-exists-p ".dir-locals.el")
+              default-directory
+            ;; When $GIT_DIR/.dir-locals.el doesn't exist,
+            ;; fallback to $GIT_WORK_TREE/.dir-locals.el,
+            ;; because the maintainer can use the latter
+            ;; to enforce conventions, while s/he has no
+            ;; control over the former.
+            (magit-toplevel))))
+    (let ((buffer-file-name nil)         ; trick hack-dir-local-variables
+          (major-mode 'git-commit-mode)) ; trick dir-locals-collect-variables
+      (hack-dir-local-variables)
+      (hack-local-variables-apply)))
+  (when git-commit-major-mode
+    (let ((auto-mode-alist (list (cons (concat "\\`"
+                                               (regexp-quote buffer-file-name)
+                                               "\\'")
+                                       git-commit-major-mode)))
+          ;; The major-mode hook might want to consult these minor
+          ;; modes, while the minor-mode hooks might want to consider
+          ;; the major mode.
+          (git-commit-mode t)
+          (with-editor-mode t))
+      (normal-mode t)))
+  (setq with-editor-show-usage nil)
+  (unless with-editor-mode
+    ;; Maybe already enabled when using `shell-command' or an Emacs shell.
+    (with-editor-mode 1))
+  (add-hook 'with-editor-finish-query-functions
+            'git-commit-finish-query-functions nil t)
+  (add-hook 'with-editor-pre-finish-hook
+            'git-commit-save-message nil t)
+  (add-hook 'with-editor-pre-cancel-hook
+            'git-commit-save-message nil t)
+  (setq with-editor-cancel-message
+        'git-commit-cancel-message)
+  (make-local-variable 'log-edit-comment-ring-index)
+  (git-commit-mode 1)
+  (git-commit-setup-font-lock)
+  (when (boundp 'save-place)
+    (setq save-place nil))
+  (save-excursion
+    (goto-char (point-min))
+    (when (looking-at "\\`\\(\\'\\|\n[^\n]\\)")
+      (open-line 1)))
+  (run-hooks 'git-commit-setup-hook)
+  (set-buffer-modified-p nil))
+
+(define-minor-mode git-commit-mode
+  "Auxiliary minor mode used when editing Git commit messages.
+This mode is only responsible for setting up some key bindings.
+Don't use it directly, instead enable `global-git-commit-mode'."
+  :lighter "")
+
+(put 'git-commit-mode 'permanent-local t)
+
+(defun git-commit-setup-changelog-support ()
+  "Treat ChangeLog entries as paragraphs."
+  (setq-local paragraph-start (concat paragraph-start "\\|\\*\\|(")))
+
+(defun git-commit-turn-on-auto-fill ()
+  "Unconditionally turn on Auto Fill mode.
+If `git-commit-fill-column' is non-nil, and `fill-column'
+doesn't already have a buffer-local value, then set that
+to `git-commit-fill-column'."
+  (when (and (numberp git-commit-fill-column)
+             (not (local-variable-p 'fill-column)))
+    (setq fill-column git-commit-fill-column))
+  (setq-local comment-auto-fill-only-comments nil)
+  (turn-on-auto-fill))
+
+(defun git-commit-turn-on-flyspell ()
+  "Unconditionally turn on Flyspell mode.
+Also prevent comments from being checked and
+finally check current non-comment text."
+  (require 'flyspell)
+  (turn-on-flyspell)
+  (setq flyspell-generic-check-word-predicate
+        'git-commit-flyspell-verify)
+  (let ((end)
+        (comment-start-regex (format "^\\(%s\\|$\\)" comment-start)))
+    (save-excursion
+      (goto-char (point-max))
+      (while (and (not (bobp)) (looking-at comment-start-regex))
+        (forward-line -1))
+      (unless (looking-at comment-start-regex)
+        (forward-line))
+      (setq end (point)))
+    (flyspell-region (point-min) end)))
+
+(defun git-commit-flyspell-verify ()
+  (not (= (char-after (line-beginning-position))
+          (aref comment-start 0))))
+
+(defun git-commit-finish-query-functions (force)
+  (run-hook-with-args-until-failure
+   'git-commit-finish-query-functions force))
+
+(defun git-commit-check-style-conventions (force)
+  "Check for violations of certain basic style conventions.
+
+For each violation ask the user if she wants to proceed anyway.
+Option `git-commit-check-style-conventions' controls which
+conventions are checked."
+  (or force
+      (save-excursion
+        (goto-char (point-min))
+        (re-search-forward (git-commit-summary-regexp) nil t)
+        (if (equal (match-string 1) "")
+            t ; Just try; we don't know whether --allow-empty-message was used.
+          (and (or (not (memq 'overlong-summary-line
+                              git-commit-style-convention-checks))
+                   (equal (match-string 2) "")
+                   (y-or-n-p "Summary line is too long.  Commit anyway? "))
+               (or (not (memq 'non-empty-second-line
+                              git-commit-style-convention-checks))
+                   (not (match-string 3))
+                   (y-or-n-p "Second line is not empty.  Commit anyway? ")))))))
+
+(defun git-commit-cancel-message ()
+  (message
+   (concat "Commit canceled"
+           (and (memq 'git-commit-save-message with-editor-pre-cancel-hook)
+                ".  Message saved to `log-edit-comment-ring'"))))
+
+;;; History
+
+(defun git-commit-prev-message (arg)
+  "Cycle backward through message history, after saving current message.
+With a numeric prefix ARG, go back ARG comments."
+  (interactive "*p")
+  (when (and (git-commit-save-message) (> arg 0))
+    (setq log-edit-comment-ring-index
+          (log-edit-new-comment-index
+           arg (ring-length log-edit-comment-ring))))
+  (save-restriction
+    (goto-char (point-min))
+    (narrow-to-region (point)
+                      (if (re-search-forward (concat "^" comment-start) nil t)
+                          (max 1 (- (point) 2))
+                        (point-max)))
+    (log-edit-previous-comment arg)))
+
+(defun git-commit-next-message (arg)
+  "Cycle forward through message history, after saving current message.
+With a numeric prefix ARG, go forward ARG comments."
+  (interactive "*p")
+  (git-commit-prev-message (- arg)))
+
+(defun git-commit-save-message ()
+  "Save current message to `log-edit-comment-ring'."
+  (interactive)
+  (--when-let (git-commit-buffer-message)
+    (unless (ring-member log-edit-comment-ring it)
+      (ring-insert log-edit-comment-ring it))))
+
+(defun git-commit-buffer-message ()
+  (let ((flush (concat "^" comment-start))
+        (str (buffer-substring-no-properties (point-min) (point-max))))
+    (with-temp-buffer
+      (insert str)
+      (goto-char (point-min))
+      (when (re-search-forward (concat flush " -+ >8 -+$") nil t)
+        (delete-region (point-at-bol) (point-max)))
+      (goto-char (point-min))
+      (flush-lines flush)
+      (goto-char (point-max))
+      (unless (eq (char-before) ?\n)
+        (insert ?\n))
+      (setq str (buffer-string)))
+    (unless (string-match "\\`[ \t\n\r]*\\'" str)
+      (when (string-match "\\`\n\\{2,\\}" str)
+        (setq str (replace-match "\n" t t str)))
+      (when (string-match "\n\\{2,\\}\\'" str)
+        (setq str (replace-match "\n" t t str)))
+      str)))
+
+;;; Headers
+
+(defun git-commit-ack (name mail)
+  "Insert a header acknowledging that you have looked at the commit."
+  (interactive (git-commit-self-ident))
+  (git-commit-insert-header "Acked-by" name mail))
+
+(defun git-commit-modified (name mail)
+  "Insert a header to signal that you have modified the commit."
+  (interactive (git-commit-self-ident))
+  (git-commit-insert-header "Modified-by" name mail))
+
+(defun git-commit-review (name mail)
+  "Insert a header acknowledging that you have reviewed the commit."
+  (interactive (git-commit-self-ident))
+  (git-commit-insert-header "Reviewed-by" name mail))
+
+(defun git-commit-signoff (name mail)
+  "Insert a header to sign off the commit."
+  (interactive (git-commit-self-ident))
+  (git-commit-insert-header "Signed-off-by" name mail))
+
+(defun git-commit-test (name mail)
+  "Insert a header acknowledging that you have tested the commit."
+  (interactive (git-commit-self-ident))
+  (git-commit-insert-header "Tested-by" name mail))
+
+(defun git-commit-cc (name mail)
+  "Insert a header mentioning someone who might be interested."
+  (interactive (git-commit-read-ident))
+  (git-commit-insert-header "Cc" name mail))
+
+(defun git-commit-reported (name mail)
+  "Insert a header mentioning the person who reported the issue."
+  (interactive (git-commit-read-ident))
+  (git-commit-insert-header "Reported-by" name mail))
+
+(defun git-commit-suggested (name mail)
+  "Insert a header mentioning the person who suggested the change."
+  (interactive (git-commit-read-ident))
+  (git-commit-insert-header "Suggested-by" name mail))
+
+(defun git-commit-self-ident ()
+  (list (or (getenv "GIT_AUTHOR_NAME")
+            (getenv "GIT_COMMITTER_NAME")
+            (ignore-errors (car (process-lines "git" "config" "user.name")))
+            user-full-name
+            (read-string "Name: "))
+        (or (getenv "GIT_AUTHOR_EMAIL")
+            (getenv "GIT_COMMITTER_EMAIL")
+            (getenv "EMAIL")
+            (ignore-errors (car (process-lines "git" "config" "user.email")))
+            (read-string "Email: "))))
+
+(defun git-commit-read-ident ()
+  (list (read-string "Name: ")
+        (read-string "Email: ")))
+
+(defun git-commit-insert-header (header name email)
+  (setq header (format "%s: %s <%s>" header name email))
+  (save-excursion
+    (goto-char (point-max))
+    (cond ((re-search-backward "^[-a-zA-Z]+: [^<]+? <[^>]+>" nil t)
+           (end-of-line)
+           (insert ?\n header)
+           (unless (= (char-after) ?\n)
+             (insert ?\n)))
+          (t
+           (while (re-search-backward (concat "^" comment-start) nil t))
+           (unless (looking-back "\n\n" nil)
+             (insert ?\n))
+           (insert header ?\n)))
+    (unless (or (eobp) (= (char-after) ?\n))
+      (insert ?\n))))
+
+;;; Font-Lock
+
+(defun git-commit-summary-regexp ()
+  (concat
+   ;; Leading empty lines and comments
+   (format "\\`\\(?:^\\(?:\\s-*\\|%s.*\\)\n\\)*" comment-start)
+   ;; Summary line
+   (format "\\(.\\{0,%d\\}\\)\\(.*\\)" git-commit-summary-max-length)
+   ;; Non-empty non-comment second line
+   (format "\\(?:\n%s\\|\n\\(.+\\)\\)?" comment-start)))
+
+(defun git-commit-extend-region-summary-line ()
+  "Identify the multiline summary-regexp construct.
+Added to `font-lock-extend-region-functions'."
+  (save-excursion
+    (save-match-data
+      (goto-char (point-min))
+      (when (looking-at (git-commit-summary-regexp))
+        (let ((summary-beg (match-beginning 0))
+              (summary-end (match-end 0)))
+          (when (or (< summary-beg font-lock-beg summary-end)
+                    (< summary-beg font-lock-end summary-end))
+            (setq font-lock-beg (min font-lock-beg summary-beg))
+            (setq font-lock-end (max font-lock-end summary-end))))))))
+
+(defvar-local git-commit--branch-name-regexp nil)
+
+(defconst git-commit-comment-headings
+  '("Changes to be committed:"
+    "Untracked files:"
+    "Changed but not updated:"
+    "Changes not staged for commit:"
+    "Unmerged paths:"
+    "Author:"
+    "Date:"))
+
+(defconst git-commit-font-lock-keywords-1
+  '(;; Pseudo headers
+    (eval . `(,(format "^\\(%s:\\)\\( .*\\)"
+                       (regexp-opt git-commit-known-pseudo-headers))
+              (1 'git-commit-known-pseudo-header)
+              (2 'git-commit-pseudo-header)))
+    ("^[-a-zA-Z]+: [^<]+? <[^>]+>"
+     (0 'git-commit-pseudo-header))
+    ;; Summary
+    (eval . `(,(git-commit-summary-regexp)
+              (1 'git-commit-summary)))
+    ;; - Note (overrides summary)
+    ("\\[.+?\\]"
+     (0 'git-commit-note t))
+    ;; - Non-empty second line (overrides summary and note)
+    (eval . `(,(git-commit-summary-regexp)
+              (2 'git-commit-overlong-summary t t)
+              (3 'git-commit-nonempty-second-line t t)))))
+
+(defconst git-commit-font-lock-keywords-2
+  `(,@git-commit-font-lock-keywords-1
+    ;; Comments
+    (eval . `(,(format "^%s.*" comment-start)
+              (0 'font-lock-comment-face)))
+    (eval . `(,(format "^%s On branch \\(.*\\)" comment-start)
+              (1 'git-commit-comment-branch-local t)))
+    (eval . `(,(format "^%s \\(HEAD\\) detached at" comment-start)
+              (1 'git-commit-comment-detached t)))
+    (eval . `(,(format "^%s %s" comment-start
+                       (regexp-opt git-commit-comment-headings t))
+              (1 'git-commit-comment-heading t)))
+    (eval . `(,(format "^%s\t\\(?:\\([^:\n]+\\):\\s-+\\)?\\(.*\\)" comment-start)
+              (1 'git-commit-comment-action t t)
+              (2 'git-commit-comment-file t)))))
+
+(defconst git-commit-font-lock-keywords-3
+  `(,@git-commit-font-lock-keywords-2
+    ;; More comments
+    (eval
+     ;; Your branch is ahead of 'master' by 3 commits.
+     ;; Your branch is behind 'master' by 2 commits, and can be fast-forwarded.
+     . `(,(format
+           "^%s Your branch is \\(?:ahead\\|behind\\) of '%s' by \\([0-9]*\\)"
+           comment-start git-commit--branch-name-regexp)
+         (1 'git-commit-comment-branch-local t)
+         (2 'git-commit-comment-branch-remote t)
+         (3 'bold t)))
+    (eval
+     ;; Your branch is up to date with 'master'.
+     ;; Your branch and 'master' have diverged,
+     . `(,(format
+           "^%s Your branch \\(?:is up-to-date with\\|and\\) '%s'"
+           comment-start git-commit--branch-name-regexp)
+         (1 'git-commit-comment-branch-local t)
+         (2 'git-commit-comment-branch-remote t)))
+    (eval
+     ;; and have 1 and 2 different commits each, respectively.
+     . `(,(format
+           "^%s and have \\([0-9]*\\) and \\([0-9]*\\) commits each"
+           comment-start)
+         (1 'bold t)
+         (2 'bold t)))))
+
+(defvar git-commit-font-lock-keywords git-commit-font-lock-keywords-2
+  "Font-Lock keywords for Git-Commit mode.")
+
+(defun git-commit-setup-font-lock ()
+  (let ((table (make-syntax-table (syntax-table))))
+    (when comment-start
+      (modify-syntax-entry (string-to-char comment-start) "." table))
+    (modify-syntax-entry ?#  "." table)
+    (modify-syntax-entry ?\" "." table)
+    (modify-syntax-entry ?\' "." table)
+    (modify-syntax-entry ?`  "." table)
+    (set-syntax-table table))
+  (setq-local comment-start
+              (or (ignore-errors
+                    (car (process-lines "git" "config" "core.commentchar")))
+                  "#"))
+  (setq-local comment-start-skip (format "^%s+[\s\t]*" comment-start))
+  (setq-local comment-end-skip "\n")
+  (setq-local comment-use-syntax nil)
+  (setq-local git-commit--branch-name-regexp
+              (if (featurep 'magit-git)
+                  (progn
+                    ;; Make sure the below functions are available.
+                    (require 'magit)
+                    ;; Font-Lock wants every submatch to succeed,
+                    ;; so also match the empty string.  Do not use
+                    ;; `regexp-quote' because that is slow if there
+                    ;; are thousands of branches outweighing the
+                    ;; benefit of an efficient regep.
+                    (format "\\(\\(?:%s\\)\\|\\)\\(\\(?:%s\\)\\|\\)"
+                            (mapconcat #'identity
+                                       (magit-list-local-branch-names)
+                                       "\\|")
+                            (mapconcat #'identity
+                                       (magit-list-remote-branch-names)
+                                       "\\|")))
+                "\\([^']*\\)"))
+  (setq-local font-lock-multiline t)
+  (add-hook 'font-lock-extend-region-functions
+            #'git-commit-extend-region-summary-line
+            t t)
+  (font-lock-add-keywords nil git-commit-font-lock-keywords t))
+
+(defun git-commit-propertize-diff ()
+  (require 'diff-mode)
+  (save-excursion
+    (goto-char (point-min))
+    (when (re-search-forward "^diff --git" nil t)
+      (beginning-of-line)
+      (let ((buffer (current-buffer)))
+        (insert
+         (with-temp-buffer
+           (insert
+            (with-current-buffer buffer
+              (prog1 (buffer-substring-no-properties (point) (point-max))
+                (delete-region (point) (point-max)))))
+           (let ((diff-default-read-only nil))
+             (diff-mode))
+           (let (font-lock-verbose font-lock-support-mode)
+             (if (fboundp 'font-lock-ensure)
+                 (font-lock-ensure)
+               (with-no-warnings
+                 (font-lock-fontify-buffer))))
+           (let (next (pos (point-min)))
+             (while (setq next (next-single-property-change pos 'face))
+               (put-text-property pos next 'font-lock-face
+                                  (get-text-property pos 'face))
+               (setq pos next))
+             (put-text-property pos (point-max) 'font-lock-face
+                                (get-text-property pos 'face)))
+           (buffer-string)))))))
+
+;;; Elisp Text Mode
+
+(define-derived-mode git-commit-elisp-text-mode text-mode "ElText"
+  "Major mode for editing commit messages of elisp projects.
+This is intended for use as `git-commit-major-mode' for projects
+that expect `symbols' to look like this.  I.e. like they look in
+Elisp doc-strings, including this one.  Unlike in doc-strings,
+\"strings\" also look different than the other text."
+  (setq font-lock-defaults '(git-commit-elisp-text-mode-keywords)))
+
+(defvar git-commit-elisp-text-mode-keywords
+  `((,(concat "[`‘]\\(\\(?:\\sw\\|\\s_\\|\\\\.\\)"
+              lisp-mode-symbol-regexp "\\)['’]")
+     (1 font-lock-constant-face prepend))
+    ("\"[^\"]*\"" (0 font-lock-string-face prepend))))
+
+;;; _
+(provide 'git-commit)
+;;; git-commit.el ends here