contrib/mq.el
author David Demelier <markand@malikania.fr>
Thu, 21 Oct 2021 11:21:21 +0200
changeset 48274 d86908050375
parent 15782 7de7630053cb
permissions -rw-r--r--
hg: remove reserved identifiers Per 7.1.3 paragraph, from C draft: All identifiers that begin with an underscore and either an uppercase letter or another underscore are always reserved for any use.
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;;; mq.el --- Emacs support for Mercurial Queues
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;; Copyright (C) 2006 Bryan O'Sullivan
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;; Author: Bryan O'Sullivan <bos@serpentine.com>
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;; mq.el is free software; you can redistribute it and/or modify it
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;; under the terms of the GNU General Public License version 2 or any
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;; later version.
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;; mq.el is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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;; General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with mq.el, GNU Emacs, or XEmacs; see the file COPYING (`C-h
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;; C-l').  If not, see <http://www.gnu.org/licenses/>.
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(eval-when-compile (require 'cl))
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(require 'mercurial)
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(defcustom mq-mode-hook nil
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  "Hook run when a buffer enters mq-mode."
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  :type 'sexp
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  :group 'mercurial)
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(defcustom mq-global-prefix "\C-cq"
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  "The global prefix for Mercurial Queues keymap bindings."
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  :type 'sexp
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  :group 'mercurial)
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(defcustom mq-edit-mode-hook nil
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  "Hook run after a buffer is populated to edit a patch description."
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  :type 'sexp
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  :group 'mercurial)
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(defcustom mq-edit-finish-hook nil
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  "Hook run before a patch description is finished up with."
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  :type 'sexp
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  :group 'mercurial)
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(defcustom mq-signoff-address nil
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  "Address with which to sign off on a patch."
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  :type 'string
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  :group 'mercurial)
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;;; Internal variables.
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(defvar mq-mode nil
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  "Is this file managed by MQ?")
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(make-variable-buffer-local 'mq-mode)
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(put 'mq-mode 'permanent-local t)
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(defvar mq-patch-history nil)
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(defvar mq-top-patch '(nil))
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(defvar mq-prev-buffer nil)
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(make-variable-buffer-local 'mq-prev-buffer)
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(put 'mq-prev-buffer 'permanent-local t)
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(defvar mq-top nil)
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(make-variable-buffer-local 'mq-top)
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(put 'mq-top 'permanent-local t)
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;;; Global keymap.
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(defvar mq-global-map
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  (let ((map (make-sparse-keymap)))
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    (define-key map "." 'mq-push)
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    (define-key map ">" 'mq-push-all)
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    (define-key map "," 'mq-pop)
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    (define-key map "<" 'mq-pop-all)
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    (define-key map "=" 'mq-diff)
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    (define-key map "r" 'mq-refresh)
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    (define-key map "e" 'mq-refresh-edit)
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    (define-key map "i" 'mq-new)
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    (define-key map "n" 'mq-next)
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    (define-key map "o" 'mq-signoff)
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    (define-key map "p" 'mq-previous)
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    (define-key map "s" 'mq-edit-series)
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    (define-key map "t" 'mq-top)
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    map))
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(global-set-key mq-global-prefix mq-global-map)
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(add-minor-mode 'mq-mode 'mq-mode)
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;;; Refresh edit mode keymap.
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(defvar mq-edit-mode-map
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  (let ((map (make-sparse-keymap)))
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    (define-key map "\C-c\C-c" 'mq-edit-finish)
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    (define-key map "\C-c\C-k" 'mq-edit-kill)
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    (define-key map "\C-c\C-s" 'mq-signoff)
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    map))
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;;; Helper functions.
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(defun mq-read-patch-name (&optional source prompt force)
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  "Read a patch name to use with a command.
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May return nil, meaning \"use the default\"."
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  (let ((patches (split-string
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		  (hg-chomp (hg-run0 (or source "qseries"))) "\n")))
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    (when force
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      (completing-read (format "Patch%s: " (or prompt ""))
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		       (mapcar (lambda (x) (cons x x)) patches)
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		       nil
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		       nil
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		       nil
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		       'mq-patch-history))))
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(defun mq-refresh-buffers (root)
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  (save-excursion
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    (dolist (buf (hg-buffers-visiting-repo root))
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   121
      (when (not (verify-visited-file-modtime buf))
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   122
	(set-buffer buf)
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   123
	(let ((ctx (hg-buffer-context)))
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   124
	  (message "Refreshing %s..." (buffer-name))
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   125
	  (revert-buffer t t t)
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   126
	  (hg-restore-context ctx)
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   127
	  (message "Refreshing %s...done" (buffer-name))))))
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  (hg-update-mode-lines root)
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  (mq-update-mode-lines root))
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   130
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   131
(defun mq-last-line ()
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   132
  (goto-char (point-max))
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   133
  (beginning-of-line)
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   134
  (when (looking-at "^$")
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   135
    (forward-line -1))
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   136
  (let ((bol (point)))
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   137
    (end-of-line)
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   138
    (let ((line (buffer-substring bol (point))))
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   139
      (when (> (length line) 0)
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   140
	line))))
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   141
3007
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   142
(defun mq-push (&optional patch)
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   143
  "Push patches until PATCH is reached.
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   144
If PATCH is nil, push at most one patch."
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  (interactive (list (mq-read-patch-name "qunapplied" " to push"
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   146
					 current-prefix-arg)))
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   147
  (let ((root (hg-root))
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   148
	(prev-buf (current-buffer))
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   149
	last-line ok)
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   150
    (unless root
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   151
      (error "Cannot push outside a repository!"))
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   152
    (hg-sync-buffers root)
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   153
    (let ((buf-name (format "MQ: Push %s" (or patch "next patch"))))
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   154
      (kill-buffer (get-buffer-create buf-name))
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   155
      (split-window-vertically)
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   156
      (other-window 1)
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   157
      (switch-to-buffer (get-buffer-create buf-name))
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   158
      (cd root)
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   159
      (message "Pushing...")
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   160
      (setq ok (= 0 (apply 'call-process (hg-binary) nil t t "qpush"
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   161
			   (if patch (list patch))))
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   162
	    last-line (mq-last-line))
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   163
      (let ((lines (count-lines (point-min) (point-max))))
4428
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   164
	(if (or (<= lines 1)
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   165
		(and (equal lines 2) (string-match "Now at:" last-line)))
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   166
	    (progn
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   167
	      (kill-buffer (current-buffer))
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   168
	      (delete-window))
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   169
	  (hg-view-mode prev-buf))))
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   170
    (mq-refresh-buffers root)
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   171
    (sit-for 0)
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   172
    (when last-line
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   173
      (if ok
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   174
	  (message "Pushing... %s" last-line)
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   175
	(error "Pushing... %s" last-line)))))
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   176
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   177
(defun mq-push-all ()
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   178
  "Push patches until all are applied."
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   179
  (interactive)
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   180
  (mq-push "-a"))
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   181
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   182
(defun mq-pop (&optional patch)
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   183
  "Pop patches until PATCH is reached.
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   184
If PATCH is nil, pop at most one patch."
4422
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   185
  (interactive (list (mq-read-patch-name "qapplied" " to pop to"
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   186
					 current-prefix-arg)))
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   187
  (let ((root (hg-root))
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   188
	last-line ok)
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   189
    (unless root
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   190
      (error "Cannot pop outside a repository!"))
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   191
    (hg-sync-buffers root)
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   192
    (set-buffer (generate-new-buffer "qpop"))
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   193
    (cd root)
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   194
    (message "Popping...")
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   195
    (setq ok (= 0 (apply 'call-process (hg-binary) nil t t "qpop"
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   196
			 (if patch (list patch))))
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   197
	  last-line (mq-last-line))
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   198
    (kill-buffer (current-buffer))
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   199
    (mq-refresh-buffers root)
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   200
    (sit-for 0)
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   201
    (when last-line
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   202
      (if ok
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   203
	  (message "Popping... %s" last-line)
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   204
	(error "Popping... %s" last-line)))))
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   205
3007
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   206
(defun mq-pop-all ()
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   207
  "Push patches until none are applied."
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   208
  (interactive)
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   209
  (mq-pop "-a"))
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diff changeset
   210
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   211
(defun mq-refresh-internal (root &rest args)
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   212
  (hg-sync-buffers root)
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   213
  (let ((patch (mq-patch-info "qtop")))
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   214
    (message "Refreshing %s..." patch)
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   215
    (let ((ret (apply 'hg-run "qrefresh" args)))
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   216
      (if (equal (car ret) 0)
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   217
	  (message "Refreshing %s... done." patch)
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   218
	(error "Refreshing %s... %s" patch (hg-chomp (cdr ret)))))))
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   219
4426
807c7b99ff13 imported patch mq-refresh-git.patch
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   220
(defun mq-refresh (&optional git)
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   221
  "Refresh the topmost applied patch.
807c7b99ff13 imported patch mq-refresh-git.patch
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   222
With a prefix argument, generate a git-compatible patch."
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   223
  (interactive "P")
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   224
  (let ((root (hg-root)))
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diff changeset
   225
    (unless root
3009
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   226
      (error "Cannot refresh outside of a repository!"))
4426
807c7b99ff13 imported patch mq-refresh-git.patch
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   227
    (apply 'mq-refresh-internal root (if git '("--git")))))
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diff changeset
   228
3009
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   229
(defun mq-patch-info (cmd &optional msg)
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   230
  (let* ((ret (hg-run cmd))
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   231
	 (info (hg-chomp (cdr ret))))
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   232
    (if (equal (car ret) 0)
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   233
	(if msg
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   234
	    (message "%s patch: %s" msg info)
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   235
	  info)
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   236
      (error "%s" info))))
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   237
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   238
(defun mq-top ()
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   239
  "Print the name of the topmost applied patch."
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  (interactive)
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  (mq-patch-info "qtop" "Top"))
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(defun mq-next ()
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  "Print the name of the next patch to be pushed."
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  (interactive)
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  (mq-patch-info "qnext" "Next"))
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(defun mq-previous ()
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  "Print the name of the first patch below the topmost applied patch.
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This would become the active patch if popped to."
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  (interactive)
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  (mq-patch-info "qprev" "Previous"))
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(defun mq-edit-finish ()
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  "Finish editing the description of this patch, and refresh the patch."
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  (interactive)
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  (unless (equal (mq-patch-info "qtop") mq-top)
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    (error "Topmost patch has changed!"))
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  (hg-sync-buffers hg-root)
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  (run-hooks 'mq-edit-finish-hook)
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  (mq-refresh-internal hg-root "-m" (buffer-substring (point-min) (point-max)))
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  (let ((buf mq-prev-buffer))
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    (kill-buffer nil)
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    (switch-to-buffer buf)))
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(defun mq-edit-kill ()
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  "Kill the edit currently being prepared."
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  (interactive)
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  (when (or (not (buffer-modified-p)) (y-or-n-p "Really kill this edit? "))
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    (let ((buf mq-prev-buffer))
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      (kill-buffer nil)
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      (switch-to-buffer buf))))
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(defun mq-get-top (root)
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  (let ((entry (assoc root mq-top-patch)))
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    (if entry
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        (cdr entry))))
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(defun mq-set-top (root patch)
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  (let ((entry (assoc root mq-top-patch)))
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    (if entry
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        (if patch
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            (setcdr entry patch)
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          (setq mq-top-patch (delq entry mq-top-patch)))
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      (setq mq-top-patch (cons (cons root patch) mq-top-patch)))))
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(defun mq-update-mode-lines (root)
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  (let ((cwd default-directory))
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    (cd root)
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    (condition-case nil
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        (mq-set-top root (mq-patch-info "qtop"))
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      (error (mq-set-top root nil)))
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    (cd cwd))
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  (let ((patch (mq-get-top root)))
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    (save-excursion
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      (dolist (buf (hg-buffers-visiting-repo root))
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        (set-buffer buf)
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        (if mq-mode
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            (setq mq-mode (or (and patch (concat " MQ:" patch)) " MQ")))))))
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(defun mq-mode (&optional arg)
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  "Minor mode for Mercurial repositories with an MQ patch queue"
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  (interactive "i")
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  (cond ((hg-root)
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         (setq mq-mode (if (null arg) (not mq-mode)
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                         arg))
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         (mq-update-mode-lines (hg-root))))
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  (run-hooks 'mq-mode-hook))
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(defun mq-edit-mode ()
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  "Mode for editing the description of a patch.
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Key bindings
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------------
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\\[mq-edit-finish]	use this description
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\\[mq-edit-kill]	abandon this description"
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  (interactive)
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  (use-local-map mq-edit-mode-map)
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  (set-syntax-table text-mode-syntax-table)
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  (setq local-abbrev-table text-mode-abbrev-table
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	major-mode 'mq-edit-mode
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	mode-name "MQ-Edit")
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  (set-buffer-modified-p nil)
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  (setq buffer-undo-list nil)
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  (run-hooks 'text-mode-hook 'mq-edit-mode-hook))
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   326
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(defun mq-refresh-edit ()
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  "Refresh the topmost applied patch, editing the patch description."
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  (interactive)
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  (while mq-prev-buffer
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    (set-buffer mq-prev-buffer))
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   332
  (let ((root (hg-root))
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	(prev-buffer (current-buffer))
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	(patch (mq-patch-info "qtop")))
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    (hg-sync-buffers root)
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    (let ((buf-name (format "*MQ: Edit description of %s*" patch)))
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      (switch-to-buffer (get-buffer-create buf-name))
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      (when (= (point-min) (point-max))
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	(set (make-local-variable 'hg-root) root)
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	(set (make-local-variable 'mq-top) patch)
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	(setq mq-prev-buffer prev-buffer)
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	(insert (hg-run0 "qheader"))
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   343
	(goto-char (point-min)))
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   344
      (mq-edit-mode)
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   345
      (cd root)))
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  (message "Type `C-c C-c' to finish editing and refresh the patch."))
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(defun mq-new (name)
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  "Create a new empty patch named NAME.
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   350
The patch is applied on top of the current topmost patch.
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   351
With a prefix argument, forcibly create the patch even if the working
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   352
directory is modified."
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   353
  (interactive (list (mq-read-patch-name "qseries" " to create" t)))
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   354
  (message "Creating patch...")
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   355
  (let ((ret (if current-prefix-arg
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		 (hg-run "qnew" "-f" name)
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	       (hg-run "qnew" name))))
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   358
    (if (equal (car ret) 0)
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   359
	(progn
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	  (hg-update-mode-lines (buffer-file-name))
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   361
	  (message "Creating patch... done."))
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   362
      (error "Creating patch... %s" (hg-chomp (cdr ret))))))
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   363
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diff changeset
   364
(defun mq-edit-series ()
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   365
  "Edit the MQ series file directly."
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diff changeset
   366
  (interactive)
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   367
  (let ((root (hg-root)))
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   368
    (unless root
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   369
      (error "Not in an MQ repository!"))
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   370
    (find-file (concat root ".hg/patches/series"))))
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parents: 4422
diff changeset
   371
4425
a57ac6049e22 mq.el: allow mq-diff to take a git option.
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parents: 4424
diff changeset
   372
(defun mq-diff (&optional git)
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   373
  "Display a diff of the topmost applied patch.
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   374
With a prefix argument, display a git-compatible diff."
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diff changeset
   375
  (interactive "P")
4424
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   376
  (hg-view-output ((format "MQ: Diff of %s" (mq-patch-info "qtop")))
4425
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diff changeset
   377
    (if git
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diff changeset
   378
	(call-process (hg-binary) nil t nil "qdiff" "--git")
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diff changeset
   379
    (call-process (hg-binary) nil t nil "qdiff"))
4424
1d31302c4522 mq.el: add mq-diff function.
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diff changeset
   380
    (diff-mode)
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diff changeset
   381
    (font-lock-fontify-buffer)))
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parents: 4423
diff changeset
   382
4429
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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diff changeset
   383
(defun mq-signoff ()
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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diff changeset
   384
  "Sign off on the current patch, in the style used by the Linux kernel.
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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diff changeset
   385
If the variable mq-signoff-address is non-nil, it will be used, otherwise
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   386
the value of the ui.username item from your hgrc will be used."
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   387
  (interactive)
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   388
  (let ((was-editing (eq major-mode 'mq-edit-mode))
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   389
	signed)
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parents: 4428
diff changeset
   390
    (unless was-editing
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diff changeset
   391
      (mq-refresh-edit))
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   392
    (save-excursion
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   393
      (let* ((user (or mq-signoff-address
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   394
		       (hg-run0 "debugconfig" "ui.username")))
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parents: 4428
diff changeset
   395
	     (signoff (concat "Signed-off-by: " user)))
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   396
	(if (search-forward signoff nil t)
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   397
	    (message "You have already signed off on this patch.")
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   398
	  (goto-char (point-max))
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   399
	  (let ((case-fold-search t))
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   400
	    (if (re-search-backward "^Signed-off-by: " nil t)
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   401
		(forward-line 1)
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
Bryan O'Sullivan <bos@serpentine.com>
parents: 4428
diff changeset
   402
	      (insert "\n")))
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
Bryan O'Sullivan <bos@serpentine.com>
parents: 4428
diff changeset
   403
	  (insert signoff)
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
Bryan O'Sullivan <bos@serpentine.com>
parents: 4428
diff changeset
   404
	  (message "%s" signoff)
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
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parents: 4428
diff changeset
   405
	  (setq signed t))))
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
Bryan O'Sullivan <bos@serpentine.com>
parents: 4428
diff changeset
   406
    (unless was-editing
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
Bryan O'Sullivan <bos@serpentine.com>
parents: 4428
diff changeset
   407
      (if signed
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
Bryan O'Sullivan <bos@serpentine.com>
parents: 4428
diff changeset
   408
	  (mq-edit-finish)
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
Bryan O'Sullivan <bos@serpentine.com>
parents: 4428
diff changeset
   409
	(mq-edit-kill)))))
3b0f73edee57 mq.el: add mq-signoff, to sign off on a patch
Bryan O'Sullivan <bos@serpentine.com>
parents: 4428
diff changeset
   410
3007
425413d9ef59 Emacs: add mq.el, early support for Mercurial Queues.
Bryan O'Sullivan <bos@serpentine.com>
parents:
diff changeset
   411

425413d9ef59 Emacs: add mq.el, early support for Mercurial Queues.
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parents:
diff changeset
   412
(provide 'mq)
425413d9ef59 Emacs: add mq.el, early support for Mercurial Queues.
Bryan O'Sullivan <bos@serpentine.com>
parents:
diff changeset
   413
425413d9ef59 Emacs: add mq.el, early support for Mercurial Queues.
Bryan O'Sullivan <bos@serpentine.com>
parents:
diff changeset
   414

425413d9ef59 Emacs: add mq.el, early support for Mercurial Queues.
Bryan O'Sullivan <bos@serpentine.com>
parents:
diff changeset
   415
;;; Local Variables:
425413d9ef59 Emacs: add mq.el, early support for Mercurial Queues.
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parents:
diff changeset
   416
;;; prompt-to-byte-compile: nil
425413d9ef59 Emacs: add mq.el, early support for Mercurial Queues.
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parents:
diff changeset
   417
;;; end: