]> code.delx.au - gnu-emacs/blobdiff - lisp/add-log.el
(enum event_kind) [MAC_OS]: Update comment for MAC_APPLE_EVENT.
[gnu-emacs] / lisp / add-log.el
index cb3873750c052a1f3d43c07633692d4ec5287d1d..47a839d539d58dfc756bfd211ba4d80b61e79762 100644 (file)
@@ -1,7 +1,9 @@
 ;;; add-log.el --- change log maintenance commands for Emacs
 
-;; Copyright (C) 1985, 86, 88, 93, 94, 97, 1998 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1986, 1988, 1993, 1994, 1997, 1998, 2000, 2002,
+;;   2003, 2004, 2005, 2006 Free Software Foundation, Inc.
 
+;; Maintainer: FSF
 ;; Keywords: tools
 
 ;; This file is part of GNU Emacs.
@@ -18,8 +20,8 @@
 
 ;; You should have received a copy of the GNU General Public License
 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
 
 ;;; Commentary:
 
 
 ;;; Code:
 
-(eval-when-compile (require 'fortran))
+(eval-when-compile
+  (require 'timezone))
 
 (defgroup change-log nil
-  "Change log maintenance"
+  "Change log maintenance."
   :group 'tools
   :link '(custom-manual "(emacs)Change Log")
   :prefix "change-log-"
   :type '(choice (const :tag "default" nil)
                 string)
   :group 'change-log)
+(put 'change-log-default-name 'safe-local-variable
+     (lambda (a) (or (stringp a) (null a))))
 
+(defcustom change-log-mode-hook nil
+  "Normal hook run by `change-log-mode'."
+  :type 'hook
+  :group 'change-log)
+
+;; Many modes set this variable, so avoid warnings.
+;;;###autoload
 (defcustom add-log-current-defun-function nil
-  "\
-*If non-nil, function to guess name of current function from surrounding text.
-\\[add-change-log-entry] calls this function (if nil, `add-log-current-defun'
-instead) with no arguments.  It returns a string or nil if it cannot guess."
-  :type 'function
+  "*If non-nil, function to guess name of surrounding function.
+It is used by `add-log-current-defun' in preference to built-in rules.
+Returns function's name as a string, or nil if outside a function."
+  :type '(choice (const nil) function)
   :group 'change-log)
 
 ;;;###autoload
 (defcustom add-log-full-name nil
   "*Full name of user, for inclusion in ChangeLog daily headers.
-This defaults to the value returned by the `user-full-name' function."
+This defaults to the value returned by the function `user-full-name'."
   :type '(choice (const :tag "Default" nil)
                 string)
   :group 'change-log)
 
 ;;;###autoload
 (defcustom add-log-mailing-address nil
-  "*Electronic mail address of user, for inclusion in ChangeLog daily headers.
-This defaults to the value of `user-mail-address'."
+  "Email addresses of user, for inclusion in ChangeLog headers.
+This defaults to the value of `user-mail-address'.  In addition to
+being a simple string, this value can also be a list.  All elements
+will be recognized as referring to the same user; when creating a new
+ChangeLog entry, one element will be chosen at random."
   :type '(choice (const :tag "Default" nil)
-                string)
+                (string :tag "String")
+                (repeat :tag "List of Strings" string))
   :group 'change-log)
 
 (defcustom add-log-time-format 'add-log-iso8601-time-string
-  "*Function that defines the time format.
+  "Function that defines the time format.
 For example, `add-log-iso8601-time-string', which gives the
 date in international ISO 8601 format,
 and `current-time-string' are two valid values."
@@ -80,7 +95,7 @@ and `current-time-string' are two valid values."
   :group 'change-log)
 
 (defcustom add-log-keep-changes-together nil
-  "*If non-nil, normally keep day's log entries for one file together.
+  "If non-nil, normally keep day's log entries for one file together.
 
 Log entries for a given file made with \\[add-change-log-entry] or
 \\[add-change-log-entry-other-window] will only be added to others \
@@ -111,47 +126,176 @@ this variable."
   :type 'boolean
   :group 'change-log)
 
+(defcustom add-log-always-start-new-record nil
+  "If non-nil, `add-change-log-entry' will always start a new record."
+  :version "22.1"
+  :type 'boolean
+  :group 'change-log)
+
+(defcustom add-log-buffer-file-name-function nil
+  "If non-nil, function to call to identify the full filename of a buffer.
+This function is called with no argument.  If this is nil, the default is to
+use `buffer-file-name'."
+  :type '(choice (const nil) function)
+  :group 'change-log)
+
+(defcustom add-log-file-name-function nil
+  "If non-nil, function to call to identify the filename for a ChangeLog entry.
+This function is called with one argument, the value of variable
+`buffer-file-name' in that buffer.  If this is nil, the default is to
+use the file's name relative to the directory of the change log file."
+  :type '(choice (const nil) function)
+  :group 'change-log)
+
+
+(defcustom change-log-version-info-enabled nil
+  "*If non-nil, enable recording version numbers with the changes."
+  :version "21.1"
+  :type 'boolean
+  :group 'change-log)
+
+(defcustom change-log-version-number-regexp-list
+  (let ((re    "\\([0-9]+\.[0-9.]+\\)"))
+    (list
+     ;;  (defconst ad-version "2.15"
+     (concat "^(def[^ \t\n]+[ \t]+[^ \t\n][ \t]\"" re)
+     ;; Revision: pcl-cvs.el,v 1.72 1999/09/05 20:21:54 monnier Exp
+     (concat "^;+ *Revision: +[^ \t\n]+[ \t]+" re)))
+  "*List of regexps to search for version number.
+The version number must be in group 1.
+Note: The search is conducted only within 10%, at the beginning of the file."
+  :version "21.1"
+  :type '(repeat regexp)
+  :group 'change-log)
+
+(defface change-log-date
+  '((t (:inherit font-lock-string-face)))
+  "Face used to highlight dates in date lines."
+  :version "21.1"
+  :group 'change-log)
+;; backward-compatibility alias
+(put 'change-log-date-face 'face-alias 'change-log-date)
+
+(defface change-log-name
+  '((t (:inherit font-lock-constant-face)))
+  "Face for highlighting author names."
+  :version "21.1"
+  :group 'change-log)
+;; backward-compatibility alias
+(put 'change-log-name-face 'face-alias 'change-log-name)
+
+(defface change-log-email
+  '((t (:inherit font-lock-variable-name-face)))
+  "Face for highlighting author email addresses."
+  :version "21.1"
+  :group 'change-log)
+;; backward-compatibility alias
+(put 'change-log-email-face 'face-alias 'change-log-email)
+
+(defface change-log-file
+  '((t (:inherit font-lock-function-name-face)))
+  "Face for highlighting file names."
+  :version "21.1"
+  :group 'change-log)
+;; backward-compatibility alias
+(put 'change-log-file-face 'face-alias 'change-log-file)
+
+(defface change-log-list
+  '((t (:inherit font-lock-keyword-face)))
+  "Face for highlighting parenthesized lists of functions or variables."
+  :version "21.1"
+  :group 'change-log)
+;; backward-compatibility alias
+(put 'change-log-list-face 'face-alias 'change-log-list)
+
+(defface change-log-conditionals
+  '((t (:inherit font-lock-variable-name-face)))
+  "Face for highlighting conditionals of the form `[...]'."
+  :version "21.1"
+  :group 'change-log)
+;; backward-compatibility alias
+(put 'change-log-conditionals-face 'face-alias 'change-log-conditionals)
+
+(defface change-log-function
+  '((t (:inherit font-lock-variable-name-face)))
+  "Face for highlighting items of the form `<....>'."
+  :version "21.1"
+  :group 'change-log)
+;; backward-compatibility alias
+(put 'change-log-function-face 'face-alias 'change-log-function)
+
+(defface change-log-acknowledgement
+  '((t (:inherit font-lock-comment-face)))
+  "Face for highlighting acknowledgments."
+  :version "21.1"
+  :group 'change-log)
+;; backward-compatibility alias
+(put 'change-log-acknowledgement-face 'face-alias 'change-log-acknowledgement)
+
 (defvar change-log-font-lock-keywords
   '(;;
-    ;; Date lines, new and old styles.
-    ("^\\sw.........[0-9:+ ]*"
-     (0 font-lock-string-face)
-     ("\\([^<]+\\)<\\([A-Za-z0-9_.-]+@[A-Za-z0-9_.-]+\\)>" nil nil
-      (1 font-lock-constant-face)
-      (2 font-lock-variable-name-face)))
+    ;; Date lines, new (2000-01-01) and old (Sat Jan  1 00:00:00 2000) styles.
+    ;; Fixme: this regepx is just an approximate one and may match
+    ;; wrongly with a non-date line existing as a random note.  In
+    ;; addition, using any kind of fixed setting like this doesn't
+    ;; work if a user customizes add-log-time-format.
+    ("^[0-9-]+ +\\|^\\(Sun\\|Mon\\|Tue\\|Wed\\|Thu\\|Fri\\|Sat\\) [A-z][a-z][a-z] [0-9:+ ]+"
+     (0 'change-log-date-face)
+     ;; Name and e-mail; some people put e-mail in parens, not angles.
+     ("\\([^<(]+?\\)[ \t]*[(<]\\([A-Za-z0-9_.+-]+@[A-Za-z0-9_.-]+\\)[>)]" nil nil
+      (1 'change-log-name)
+      (2 'change-log-email)))
     ;;
     ;; File names.
-    ("^\t\\* \\([^ ,:([\n]+\\)"
-     (1 font-lock-function-name-face)
-     ("\\=, \\([^ ,:([\n]+\\)" nil nil (1 font-lock-function-name-face)))
+    ("^\\( +\\|\t\\)\\* \\([^ ,:([\n]+\\)"
+     (2 'change-log-file)
+     ;; Possibly further names in a list:
+     ("\\=, \\([^ ,:([\n]+\\)" nil nil (1 'change-log-file))
+     ;; Possibly a parenthesized list of names:
+     ("\\= (\\([^(),\n]+\\|(\\(setf\\|SETF\\) [^() ,\n]+)\\)"
+      nil nil (1 'change-log-list))
+     ("\\=, *\\([^(),\n]+\\|(\\(setf\\|SETF\\) [^() ,\n]+)\\)"
+      nil nil (1 'change-log-list)))
     ;;
     ;; Function or variable names.
-    ("(\\([^) ,:\n]+\\)"
-     (1 font-lock-keyword-face)
-     ("\\=, *\\([^) ,:\n]+\\)" nil nil (1 font-lock-keyword-face)))
+    ("^\\( +\\|\t\\)(\\([^(),\n]+\\|(\\(setf\\|SETF\\) [^() ,\n]+)\\)"
+     (2 'change-log-list)
+     ("\\=, *\\([^(),\n]+\\|(\\(setf\\|SETF\\) [^() ,\n]+)\\)" nil nil
+      (1 'change-log-list)))
     ;;
     ;; Conditionals.
-    ("\\[!?\\([^]\n]+\\)\\]\\(:\\| (\\)" (1 font-lock-variable-name-face))
+    ("\\[!?\\([^]\n]+\\)\\]\\(:\\| (\\)" (1 'change-log-conditionals))
+    ;;
+    ;; Function of change.
+    ("<\\([^>\n]+\\)>\\(:\\| (\\)" (1 'change-log-function))
     ;;
     ;; Acknowledgements.
-    ("^\t\\(From\\|Patch\\(es\\)? by\\|Report\\(ed by\\| from\\)\\|Suggest\\(ed by\\|ion from\\)\\)"
-     1 font-lock-comment-face)
-    ("  \\(From\\|Patch\\(es\\)? by\\|Report\\(ed by\\| from\\)\\|Suggest\\(ed by\\|ion from\\)\\)"
-     1 font-lock-comment-face))
+    ;; Don't include plain "From" because that is vague;
+    ;; we want to encourage people to say something more specific.
+    ;; Note that the FSF does not use "Patches by"; our convention
+    ;; is to put the name of the author of the changes at the top
+    ;; of the change log entry.
+    ("\\(^\\( +\\|\t\\)\\|  \\)\\(Patch\\(es\\)? by\\|Report\\(ed by\\| from\\)\\|Suggest\\(ed by\\|ion from\\)\\)"
+     3 'change-log-acknowledgement))
   "Additional expressions to highlight in Change Log mode.")
 
-(defvar change-log-mode-map nil
+(defvar change-log-mode-map
+  (let ((map (make-sparse-keymap)))
+    (define-key map [?\C-c ?\C-p] 'add-log-edit-prev-comment)
+    (define-key map [?\C-c ?\C-n] 'add-log-edit-next-comment)
+    map)
   "Keymap for Change Log major mode.")
-(if change-log-mode-map
-    nil
-  (setq change-log-mode-map (make-sparse-keymap)))
 
-(defvar change-log-time-zone-rule nil
+;; It used to be called change-log-time-zone-rule but really should be
+;; called add-log-time-zone-rule since it's only used from add-log-* code.
+(defvaralias 'change-log-time-zone-rule 'add-log-time-zone-rule)
+(defvar add-log-time-zone-rule nil
   "Time zone used for calculating change log time stamps.
 It takes the same format as the TZ argument of `set-time-zone-rule'.
-If nil, use local time.")
+If nil, use local time.
+If t, use universal time.")
 
-(defun add-log-iso8601-time-zone (time)
+(defun add-log-iso8601-time-zone (&optional time)
   (let* ((utc-offset (or (car (current-time-zone time)) 0))
         (sign (if (< utc-offset 0) ?- ?+))
         (sec (abs utc-offset))
@@ -164,26 +308,47 @@ If nil, use local time.")
                  (t "%c%02d"))
            sign hh mm ss)))
 
+(defvar add-log-iso8601-with-time-zone nil)
+
 (defun add-log-iso8601-time-string ()
-  (if change-log-time-zone-rule
-      (let ((tz (getenv "TZ"))
-           (now (current-time)))
-       (unwind-protect
-           (progn
-             (set-time-zone-rule
-              change-log-time-zone-rule)
-             (concat
-              (format-time-string "%Y-%m-%d " now)
-              (add-log-iso8601-time-zone now)))
-         (set-time-zone-rule tz)))
-    (format-time-string "%Y-%m-%d")))
+  (let ((time (format-time-string "%Y-%m-%d"
+                                  nil (eq t add-log-time-zone-rule))))
+    (if add-log-iso8601-with-time-zone
+        (concat time " " (add-log-iso8601-time-zone))
+      time)))
 
 (defun change-log-name ()
+  "Return (system-dependent) default name for a change log file."
   (or change-log-default-name
       (if (eq system-type 'vax-vms)
          "$CHANGE_LOG$.TXT"
        "ChangeLog")))
 
+(defun add-log-edit-prev-comment (arg)
+  "Cycle backward through Log-Edit mode comment history.
+With a numeric prefix ARG, go back ARG comments."
+  (interactive "*p")
+  (save-restriction
+    (narrow-to-region (point)
+                     (if (memq last-command '(add-log-edit-prev-comment
+                                              add-log-edit-next-comment))
+                         (mark) (point)))
+    (when (fboundp 'log-edit-previous-comment)
+      (log-edit-previous-comment arg)
+      (indent-region (point-min) (point-max))
+      (goto-char (point-min))
+      (unless (save-restriction (widen) (bolp))
+       (delete-region (point) (progn (skip-chars-forward " \t\n") (point))))
+      (set-mark (point-min))
+      (goto-char (point-max))
+      (delete-region (point) (progn (skip-chars-backward " \t\n") (point))))))
+
+(defun add-log-edit-next-comment (arg)
+  "Cycle forward through Log-Edit mode comment history.
+With a numeric prefix ARG, go back ARG comments."
+  (interactive "*p")
+  (add-log-edit-prev-comment (- arg)))
+
 ;;;###autoload
 (defun prompt-for-change-log-name ()
   "Prompt for a change log name."
@@ -202,21 +367,49 @@ If nil, use local time.")
                            (file-name-as-directory name))
        name))))
 
+(defun change-log-version-number-search ()
+  "Return version number of current buffer's file.
+This is the value returned by `vc-workfile-version' or, if that is
+nil, by matching `change-log-version-number-regexp-list'."
+  (let* ((size (buffer-size))
+        (limit
+         ;; The version number can be anywhere in the file, but
+         ;; restrict search to the file beginning: 10% should be
+         ;; enough to prevent some mishits.
+         ;;
+         ;; Apply percentage only if buffer size is bigger than
+         ;; approx 100 lines.
+         (if (> size (* 100 80)) (+ (point) (/ size 10)))))
+    (or (and buffer-file-name (vc-workfile-version buffer-file-name))
+       (save-restriction
+         (widen)
+         (let ((regexps change-log-version-number-regexp-list)
+               version)
+           (while regexps
+             (save-excursion
+               (goto-char (point-min))
+               (when (re-search-forward (pop regexps) limit t)
+                 (setq version (match-string 1)
+                       regexps nil))))
+           version)))))
+
+
 ;;;###autoload
-(defun find-change-log (&optional file-name)
+(defun find-change-log (&optional file-name buffer-file)
   "Find a change log file for \\[add-change-log-entry] and return the name.
 
 Optional arg FILE-NAME specifies the file to use.
 If FILE-NAME is nil, use the value of `change-log-default-name'.
-If 'change-log-default-name' is nil, behave as though it were 'ChangeLog'
+If `change-log-default-name' is nil, behave as though it were 'ChangeLog'
 \(or whatever we use on this operating system).
 
-If 'change-log-default-name' contains a leading directory component, then
+If `change-log-default-name' contains a leading directory component, then
 simply find it in the current directory.  Otherwise, search in the current
 directory and its successive parents for a file so named.
 
 Once a file is found, `change-log-default-name' is set locally in the
-current buffer to the complete file name."
+current buffer to the complete file name.
+Optional arg BUFFER-FILE overrides `buffer-file-name'."
   ;; If user specified a file name or if this buffer knows which one to use,
   ;; just use that.
   (or file-name
@@ -226,9 +419,10 @@ current buffer to the complete file name."
       (progn
        ;; Chase links in the source file
        ;; and use the change log in the dir where it points.
-       (setq file-name (or (and buffer-file-name
+       (setq file-name (or (and (or buffer-file buffer-file-name)
                                 (file-name-directory
-                                 (file-chase-links buffer-file-name)))
+                                 (file-chase-links
+                                  (or buffer-file buffer-file-name))))
                            default-directory))
        (if (file-directory-p file-name)
            (setq file-name (expand-file-name (change-log-name) file-name)))
@@ -259,175 +453,267 @@ current buffer to the complete file name."
   (set (make-local-variable 'change-log-default-name) file-name)
   file-name)
 
+(defun add-log-file-name (buffer-file log-file)
+  ;; Never want to add a change log entry for the ChangeLog file itself.
+  (unless (or (null buffer-file) (string= buffer-file log-file))
+    (if add-log-file-name-function
+       (funcall add-log-file-name-function buffer-file)
+      (setq buffer-file
+           (if (string-match
+                (concat "^" (regexp-quote (file-name-directory log-file)))
+                buffer-file)
+               (substring buffer-file (match-end 0))
+             (file-name-nondirectory buffer-file)))
+      ;; If we have a backup file, it's presumably because we're
+      ;; comparing old and new versions (e.g. for deleted
+      ;; functions) and we'll want to use the original name.
+      (if (backup-file-name-p buffer-file)
+         (file-name-sans-versions buffer-file)
+       buffer-file))))
+
 ;;;###autoload
 (defun add-change-log-entry (&optional whoami file-name other-window new-entry)
-  "Find change log file and add an entry for today.
+  "Find change log file, and add an entry for today and an item for this file.
 Optional arg WHOAMI (interactive prefix) non-nil means prompt for user
-name and site.
+name and email (stored in `add-log-full-name' and `add-log-mailing-address').
+
+Second arg FILE-NAME is file name of the change log.
+If nil, use the value of `change-log-default-name'.
 
-Second arg is FILE-NAME of change log.  If nil, uses `change-log-default-name'.
 Third arg OTHER-WINDOW non-nil means visit in other window.
+
 Fourth arg NEW-ENTRY non-nil means always create a new entry at the front;
 never append to an existing entry.  Option `add-log-keep-changes-together'
 otherwise affects whether a new entry is created.
 
-Today's date is calculated according to `change-log-time-zone-rule' if
+Option `add-log-always-start-new-record' non-nil means always create a
+new record, even when the last record was made on the same date and by
+the same person.
+
+The change log file can start with a copyright notice and a copying
+permission notice.  The first blank line indicates the end of these
+notices.
+
+Today's date is calculated according to `add-log-time-zone-rule' if
 non-nil, otherwise in local time."
   (interactive (list current-prefix-arg
                     (prompt-for-change-log-name)))
-  (or add-log-full-name
-      (setq add-log-full-name (user-full-name)))
-  (or add-log-mailing-address
-      (setq add-log-mailing-address user-mail-address))
-  (if whoami
-      (progn
-       (setq add-log-full-name (read-input "Full name: " add-log-full-name))
-        ;; Note that some sites have room and phone number fields in
-        ;; full name which look silly when inserted.  Rather than do
-        ;; anything about that here, let user give prefix argument so that
-        ;; s/he can edit the full name field in prompter if s/he wants.
-       (setq add-log-mailing-address
-             (read-input "Mailing address: " add-log-mailing-address))))
-  (let ((defun (funcall (or add-log-current-defun-function
-                           'add-log-current-defun)))
-       bound entry)
-
-    (setq file-name (expand-file-name (find-change-log file-name)))
-
-    ;; Set ENTRY to the file name to use in the new entry.
-    (and buffer-file-name
-        ;; Never want to add a change log entry for the ChangeLog file itself.
-        (not (string= buffer-file-name file-name))
-        (setq entry (if (string-match
-                         (concat "^" (regexp-quote (file-name-directory
-                                                    file-name)))
-                         buffer-file-name)
-                        (substring buffer-file-name (match-end 0))
-                      (file-name-nondirectory buffer-file-name))))
-
-    (if (and other-window (not (equal file-name buffer-file-name)))
-       (find-file-other-window file-name)
-      (find-file file-name))
+  (let* ((defun (add-log-current-defun))
+        (version (and change-log-version-info-enabled
+                      (change-log-version-number-search)))
+        (buf-file-name (if add-log-buffer-file-name-function
+                           (funcall add-log-buffer-file-name-function)
+                         buffer-file-name))
+        (buffer-file (if buf-file-name (expand-file-name buf-file-name)))
+        (file-name (expand-file-name (find-change-log file-name buffer-file)))
+        ;; Set ITEM to the file name to use in the new item.
+        (item (add-log-file-name buffer-file file-name))
+        bound
+        (full-name (or add-log-full-name (user-full-name)))
+        (mailing-address (or add-log-mailing-address user-mail-address)))
+
+    (if whoami
+       (progn
+         (setq full-name (read-string "Full name: " full-name))
+         ;; Note that some sites have room and phone number fields in
+         ;; full name which look silly when inserted.  Rather than do
+         ;; anything about that here, let user give prefix argument so that
+         ;; s/he can edit the full name field in prompter if s/he wants.
+         (setq mailing-address
+               (read-string "Mailing address: " mailing-address))))
+
+    (unless (equal file-name buffer-file-name)
+      (if (or other-window (window-dedicated-p (selected-window)))
+         (find-file-other-window file-name)
+       (find-file file-name)))
     (or (eq major-mode 'change-log-mode)
        (change-log-mode))
     (undo-boundary)
     (goto-char (point-min))
-    (let ((new-entry (concat (funcall add-log-time-format)
-                            "  " add-log-full-name
-                            "  <" add-log-mailing-address ">")))
-      (if (looking-at (regexp-quote new-entry))
+
+    ;; If file starts with a copyright and permission notice, skip them.
+    ;; Assume they end at first blank line.
+    (when (looking-at "Copyright")
+      (search-forward "\n\n")
+      (skip-chars-forward "\n"))
+
+    ;; Advance into first entry if it is usable; else make new one.
+    (let ((new-entries
+           (mapcar (lambda (addr)
+                     (concat
+                      (if (stringp add-log-time-zone-rule)
+                          (let ((tz (getenv "TZ")))
+                            (unwind-protect
+                                (progn
+                                  (set-time-zone-rule add-log-time-zone-rule)
+                                  (funcall add-log-time-format))
+                              (set-time-zone-rule tz)))
+                        (funcall add-log-time-format))
+                      "  " full-name
+                      "  <" addr ">"))
+                   (if (consp mailing-address)
+                       mailing-address
+                     (list mailing-address)))))
+      (if (and (not add-log-always-start-new-record)
+               (let ((hit nil))
+                (dolist (entry new-entries hit)
+                  (when (looking-at (regexp-quote entry))
+                    (setq hit t)))))
          (forward-line 1)
-       (insert new-entry "\n\n")))
+       (insert (nth (random (length new-entries))
+                    new-entries)
+               (if use-hard-newlines hard-newline "\n")
+               (if use-hard-newlines hard-newline "\n"))
+       (forward-line -1)))
 
+    ;; Determine where we should stop searching for a usable
+    ;; item to add to, within this entry.
     (setq bound
-         (progn
+         (save-excursion
             (if (looking-at "\n*[^\n* \t]")
                 (skip-chars-forward "\n")
              (if add-log-keep-changes-together
                  (forward-page)        ; page delimits entries for date
                (forward-paragraph)))   ; paragraph delimits entries for file
            (point)))
-    (goto-char (point-min))
-    ;; Now insert the new line for this entry.
+
+    ;; Now insert the new line for this item.
     (cond ((re-search-forward "^\\s *\\*\\s *$" bound t)
-          ;; Put this file name into the existing empty entry.
-          (if entry
-              (insert entry)))
+          ;; Put this file name into the existing empty item.
+          (if item
+              (insert item)))
          ((and (not new-entry)
                (let (case-fold-search)
                  (re-search-forward
-                  (concat (regexp-quote (concat "* " entry))
+                  (concat (regexp-quote (concat "* " item))
                           ;; Don't accept `foo.bar' when
                           ;; looking for `foo':
                           "\\(\\s \\|[(),:]\\)")
                   bound t)))
-          ;; Add to the existing entry for the same file.
+          ;; Add to the existing item for the same file.
           (re-search-forward "^\\s *$\\|^\\s \\*")
           (goto-char (match-beginning 0))
           ;; Delete excess empty lines; make just 2.
           (while (and (not (eobp)) (looking-at "^\\s *$"))
-            (delete-region (point) (save-excursion (forward-line 1) (point))))
-          (insert "\n\n")
+            (delete-region (point) (line-beginning-position 2)))
+          (insert (if use-hard-newlines hard-newline "\n")
+                  (if use-hard-newlines hard-newline "\n"))
           (forward-line -2)
           (indent-relative-maybe))
          (t
-          ;; Make a new entry.
-          (forward-line 1)
+          ;; Make a new item.
           (while (looking-at "\\sW")
             (forward-line 1))
           (while (and (not (eobp)) (looking-at "^\\s *$"))
-            (delete-region (point) (save-excursion (forward-line 1) (point))))
-          (insert "\n\n\n")
+            (delete-region (point) (line-beginning-position 2)))
+          (insert (if use-hard-newlines hard-newline "\n")
+                  (if use-hard-newlines hard-newline "\n")
+                  (if use-hard-newlines hard-newline "\n"))
           (forward-line -2)
           (indent-to left-margin)
-          (insert "* " (or entry ""))))
+          (insert "* ")
+          (if item (insert item))))
     ;; Now insert the function name, if we have one.
-    ;; Point is at the entry for this file,
+    ;; Point is at the item for this file,
     ;; either at the end of the line or at the first blank line.
-    (if defun
-       (progn
-         ;; Make it easy to get rid of the function name.
-         (undo-boundary)
-         (insert (if (save-excursion
-                       (beginning-of-line 1)
-                       (looking-at "\\s *$"))
-                     ""
-                   " ")
-                 "(" defun "): "))
-      ;; No function name, so put in a colon unless we have just a star.
-      (if (not (save-excursion
-                (beginning-of-line 1)
-                (looking-at "\\s *\\(\\*\\s *\\)?$")))
-         (insert ": ")))))
+    (if (not defun)
+       ;; No function name, so put in a colon unless we have just a star.
+       (unless (save-excursion
+                 (beginning-of-line 1)
+                 (looking-at "\\s *\\(\\*\\s *\\)?$"))
+         (insert ": ")
+         (if version (insert version ?\s)))
+      ;; Make it easy to get rid of the function name.
+      (undo-boundary)
+      (unless (save-excursion
+               (beginning-of-line 1)
+               (looking-at "\\s *$"))
+       (insert ?\s))
+      ;; See if the prev function name has a message yet or not.
+      ;; If not, merge the two items.
+      (let ((pos (point-marker)))
+       (skip-syntax-backward " ")
+       (skip-chars-backward "):")
+       (if (and (looking-at "):")
+                (let ((pos (save-excursion (backward-sexp 1) (point))))
+                  (when (equal (buffer-substring pos (point)) defun)
+                    (delete-region pos (point)))
+                  (> fill-column (+ (current-column) (length defun) 4))))
+           (progn (skip-chars-backward ", ")
+                  (delete-region (point) pos)
+                  (unless (memq (char-before) '(?\()) (insert ", ")))
+         (if (looking-at "):")
+             (delete-region (+ 1 (point)) (line-end-position)))
+         (goto-char pos)
+         (insert "("))
+       (set-marker pos nil))
+      (insert defun "): ")
+      (if version (insert version ?\s)))))
 
 ;;;###autoload
 (defun add-change-log-entry-other-window (&optional whoami file-name)
-  "Find change log file in other window and add an entry for today.
-Optional arg WHOAMI (interactive prefix) non-nil means prompt for user
-name and site.
-Second optional arg FILE-NAME is file name of change log.
-If nil, use `change-log-default-name'.
-
-Affected by the same options as `add-change-log-entry'."
+  "Find change log file in other window and add entry and item.
+This is just like `add-change-log-entry' except that it displays
+the change log file in another window."
   (interactive (if current-prefix-arg
                   (list current-prefix-arg
                         (prompt-for-change-log-name))))
   (add-change-log-entry whoami file-name t))
 ;;;###autoload (define-key ctl-x-4-map "a" 'add-change-log-entry-other-window)
 
+(defvar change-log-indent-text 0)
+
+(defun change-log-indent ()
+  (let* ((indent
+         (save-excursion
+           (beginning-of-line)
+           (skip-chars-forward " \t")
+           (cond
+            ((and (looking-at "\\(.*\\)  [^ \n].*[^ \n]  <.*>\\(?: +(.*)\\)? *$")
+                  ;; Matching the output of add-log-time-format is difficult,
+                  ;; but I'll get it has at least two adjacent digits.
+                  (string-match "[[:digit:]][[:digit:]]" (match-string 1)))
+             0)
+            ((looking-at "[^*(]")
+             (+ (current-left-margin) change-log-indent-text))
+            (t (current-left-margin)))))
+        (pos (save-excursion (indent-line-to indent) (point))))
+    (if (> pos (point)) (goto-char pos))))
+
+
+(defvar smerge-resolve-function)
+
 ;;;###autoload
-(defun change-log-mode ()
+(define-derived-mode change-log-mode text-mode "Change Log"
   "Major mode for editing change logs; like Indented Text Mode.
 Prevents numeric backups and sets `left-margin' to 8 and `fill-column' to 74.
 New log entries are usually made with \\[add-change-log-entry] or \\[add-change-log-entry-other-window].
 Each entry behaves as a paragraph, and the entries for one day as a page.
-Runs `change-log-mode-hook'."
-  (interactive)
-  (kill-all-local-variables)
-  (indented-text-mode)
-  (setq major-mode 'change-log-mode
-       mode-name "Change Log"
-       left-margin 8
+Runs `change-log-mode-hook'.
+\\{change-log-mode-map}"
+  (setq left-margin 8
        fill-column 74
        indent-tabs-mode t
        tab-width 8)
-  (use-local-map change-log-mode-map)
   (set (make-local-variable 'fill-paragraph-function)
        'change-log-fill-paragraph)
-  ;; Let each entry behave as one paragraph:
-  ;; We really do want "^" in paragraph-start below: it is only the lines that
-  ;; begin at column 0 (despite the left-margin of 8) that we are looking for.
+  (set (make-local-variable 'indent-line-function) 'change-log-indent)
+  (set (make-local-variable 'tab-always-indent) nil)
+  ;; We really do want "^" in paragraph-start below: it is only the
+  ;; lines that begin at column 0 (despite the left-margin of 8) that
+  ;; we are looking for.  Adding `* ' allows eliding the blank line
+  ;; between entries for different files.
   (set (make-local-variable 'paragraph-start) "\\s *$\\|\f\\|^\\<")
-  (set (make-local-variable 'paragraph-separate) "\\s *$\\|\f\\|^\\<")
-  ;; Let all entries for one day behave as one page.
+  (set (make-local-variable 'paragraph-separate) paragraph-start)
   ;; Match null string on the date-line so that the date-line
   ;; is grouped with what follows.
   (set (make-local-variable 'page-delimiter) "^\\<\\|^\f")
   (set (make-local-variable 'version-control) 'never)
+  (set (make-local-variable 'smerge-resolve-function)
+       'change-log-resolve-conflict)
   (set (make-local-variable 'adaptive-fill-regexp) "\\s *")
   (set (make-local-variable 'font-lock-defaults)
-       '(change-log-font-lock-keywords t))
-  (run-hooks 'change-log-mode-hook))
+       '(change-log-font-lock-keywords t nil nil backward-paragraph)))
 
 ;; It might be nice to have a general feature to replace this.  The idea I
 ;; have is a variable giving a regexp matching text which should not be
@@ -444,24 +730,24 @@ Prefix arg means justify as well."
     t))
 \f
 (defcustom add-log-current-defun-header-regexp
-  "^\\([A-Z][A-Z_ ]*[A-Z_]\\|[-_a-zA-Z]+\\)[ \t]*[:=]"
-  "*Heuristic regexp used by `add-log-current-defun' for unknown major modes."
+  "^\\([[:upper:]][[:upper:]_ ]*[[:upper:]_]\\|[-_[:alpha:]]+\\)[ \t]*[:=]"
+  "Heuristic regexp used by `add-log-current-defun' for unknown major modes."
   :type 'regexp
   :group 'change-log)
 
 ;;;###autoload
 (defvar add-log-lisp-like-modes
-    '(emacs-lisp-mode lisp-mode scheme-mode dsssl-mode lisp-interaction-mode)
+  '(emacs-lisp-mode lisp-mode scheme-mode dsssl-mode lisp-interaction-mode)
   "*Modes that look like Lisp to `add-log-current-defun'.")
 
 ;;;###autoload
 (defvar add-log-c-like-modes
-    '(c-mode c++-mode c++-c-mode objc-mode)
+  '(c-mode c++-mode c++-c-mode objc-mode)
   "*Modes that look like C to `add-log-current-defun'.")
 
 ;;;###autoload
 (defvar add-log-tex-like-modes
-    '(TeX-mode plain-TeX-mode LaTeX-mode plain-tex-mode latex-mode)
+  '(TeX-mode plain-TeX-mode LaTeX-mode plain-tex-mode latex-mode)
   "*Modes that look like TeX to `add-log-current-defun'.")
 
 ;;;###autoload
@@ -469,36 +755,44 @@ Prefix arg means justify as well."
   "Return name of function definition point is in, or nil.
 
 Understands C, Lisp, LaTeX (\"functions\" are chapters, sections, ...),
-Texinfo (@node titles), Perl, and Fortran.
+Texinfo (@node titles) and Perl.
 
 Other modes are handled by a heuristic that looks in the 10K before
 point for uppercase headings starting in the first column or
-identifiers followed by `:' or `=', see variable
-`add-log-current-defun-header-regexp'.
+identifiers followed by `:' or `='.  See variables
+`add-log-current-defun-header-regexp' and
+`add-log-current-defun-function'.
 
 Has a preference of looking backwards."
   (condition-case nil
       (save-excursion
        (let ((location (point)))
-         (cond ((memq major-mode add-log-lisp-like-modes)
+         (cond (add-log-current-defun-function
+                (funcall add-log-current-defun-function))
+               ((memq major-mode add-log-lisp-like-modes)
                 ;; If we are now precisely at the beginning of a defun,
                 ;; make sure beginning-of-defun finds that one
                 ;; rather than the previous one.
                 (or (eobp) (forward-char 1))
                 (beginning-of-defun)
-                ;; Make sure we are really inside the defun found, not after it.
-                (if (and (looking-at "\\s(")
-                         (progn (end-of-defun)
-                                (< location (point)))
-                         (progn (forward-sexp -1)
-                                (>= location (point))))
-                    (progn
-                      (if (looking-at "\\s(")
-                          (forward-char 1))
-                      (forward-sexp 1)
-                      (skip-chars-forward " '")
-                      (buffer-substring (point)
-                                        (progn (forward-sexp 1) (point))))))
+                ;; Make sure we are really inside the defun found,
+                ;; not after it.
+                (when (and (looking-at "\\s(")
+                           (progn (end-of-defun)
+                                  (< location (point)))
+                           (progn (forward-sexp -1)
+                                  (>= location (point))))
+                  (if (looking-at "\\s(")
+                      (forward-char 1))
+                  ;; Skip the defining construct name, typically "defun"
+                  ;; or "defvar".
+                  (forward-sexp 1)
+                  ;; The second element is usually a symbol being defined.
+                  ;; If it is not, use the first symbol in it.
+                  (skip-chars-forward " \t\n'(")
+                  (buffer-substring-no-properties (point)
+                                                  (progn (forward-sexp 1)
+                                                         (point)))))
                ((and (memq major-mode add-log-c-like-modes)
                      (save-excursion
                        (beginning-of-line)
@@ -514,8 +808,9 @@ Has a preference of looking backwards."
                   (forward-line -1))
                 (search-forward "define")
                 (skip-chars-forward " \t")
-                (buffer-substring (point)
-                                  (progn (forward-sexp 1) (point))))
+                (buffer-substring-no-properties (point)
+                                                (progn (forward-sexp 1)
+                                                       (point))))
                ((memq major-mode add-log-c-like-modes)
                 (beginning-of-line)
                 ;; See if we are in the beginning part of a function,
@@ -524,144 +819,168 @@ Has a preference of looking backwards."
                   (forward-line 1))
                 (or (eobp)
                     (forward-char 1))
-                (beginning-of-defun)
-                (if (progn (end-of-defun)
-                           (< location (point)))
-                    (progn
+                (let (maybe-beg)
+                  ;; Try to find the containing defun.
+                  (beginning-of-defun)
+                  (end-of-defun)
+                  ;; If the defun we found ends before the desired position,
+                  ;; see if there's a DEFUN construct
+                  ;; between that end and the desired position.
+                  (when (save-excursion
+                          (and (> location (point))
+                               (re-search-forward "^DEFUN"
+                                                  (save-excursion
+                                                    (goto-char location)
+                                                    (line-end-position))
+                                                  t)
+                               (re-search-forward "^{" nil t)
+                               (setq maybe-beg (point))))
+                    ;; If so, go to the end of that instead.
+                    (goto-char maybe-beg)
+                    (end-of-defun)))
+                ;; If the desired position is within the defun we found,
+                ;; find the function name.
+                (when (< location (point))
+                  ;; Move back over function body.
+                  (backward-sexp 1)
+                  (let (beg)
+                    ;; Skip back over typedefs and arglist.
+                    ;; Stop at the function definition itself
+                    ;; or at the line that follows end of function doc string.
+                    (forward-line -1)
+                    (while (and (not (bobp))
+                                (looking-at "[ \t\n]")
+                                (not (looking-back "[*]/)\n" (- (point) 4))))
+                      (forward-line -1))
+                    ;; If we found a doc string, this must be the DEFUN macro
+                    ;; used in Emacs.  Move back to the DEFUN line.
+                    (when (looking-back "[*]/)\n" (- (point) 4))
                       (backward-sexp 1)
-                      (let (beg tem)
-
-                        (forward-line -1)
-                        ;; Skip back over typedefs of arglist.
-                        (while (and (not (bobp))
-                                    (looking-at "[ \t\n]"))
-                          (forward-line -1))
-                        ;; See if this is using the DEFUN macro used in Emacs,
-                        ;; or the DEFUN macro used by the C library.
-                        (if (condition-case nil
-                                (and (save-excursion
-                                       (end-of-line)
-                                       (while (= (preceding-char) ?\\)
-                                         (end-of-line 2))
-                                       (backward-sexp 1)
-                                       (beginning-of-line)
-                                       (setq tem (point))
-                                       (looking-at "DEFUN\\b"))
-                                     (>= location tem))
-                              (error nil))
-                            (progn
-                              (goto-char tem)
-                              (down-list 1)
-                              (if (= (char-after (point)) ?\")
-                                  (progn
-                                    (forward-sexp 1)
-                                    (skip-chars-forward " ,")))
-                              (buffer-substring (point)
-                                                (progn (forward-sexp 1) (point))))
-                           (if (looking-at "^[+-]")
-                               (change-log-get-method-definition)
-                             ;; Ordinary C function syntax.
-                             (setq beg (point))
-                             (if (and (condition-case nil
-                                         ;; Protect against "Unbalanced parens" error.
-                                         (progn
-                                           (down-list 1) ; into arglist
-                                           (backward-up-list 1)
-                                           (skip-chars-backward " \t")
-                                           t)
-                                       (error nil))
-                                     ;; Verify initial pos was after
-                                     ;; real start of function.
-                                     (save-excursion
-                                       (goto-char beg)
-                                       ;; For this purpose, include the line
-                                       ;; that has the decl keywords.  This
-                                       ;; may also include some of the
-                                       ;; comments before the function.
-                                       (while (and (not (bobp))
-                                                   (save-excursion
-                                                     (forward-line -1)
-                                                     (looking-at "[^\n\f]")))
-                                         (forward-line -1))
-                                       (>= location (point)))
-                                          ;; Consistency check: going down and up
-                                          ;; shouldn't take us back before BEG.
-                                          (> (point) beg))
-                                (let (end middle)
-                                  ;; Don't include any final newline
-                                  ;; in the name we use.
-                                  (if (= (preceding-char) ?\n)
-                                      (forward-char -1))
-                                  (setq end (point))
-                                  (backward-sexp 1)
-                                  ;; Now find the right beginning of the name.
-                                  ;; Include certain keywords if they
-                                  ;; precede the name.
-                                  (setq middle (point))
-                                  (forward-word -1)
-                                  ;; Ignore these subparts of a class decl
-                                  ;; and move back to the class name itself.
-                                  (while (looking-at "public \\|private ")
-                                    (skip-chars-backward " \t:")
-                                    (setq end (point))
-                                    (backward-sexp 1)
-                                    (setq middle (point))
-                                    (forward-word -1))
-                                  (and (bolp)
-                                       (looking-at "struct \\|union \\|class ")
-                                       (setq middle (point)))
-                                  (buffer-substring middle end)))))))))
+                      (beginning-of-line))
+                    ;; Is this a DEFUN construct?  And is LOCATION in it?
+                    (if (and (looking-at "DEFUN\\b")
+                             (>= location (point)))
+                         ;; DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, ...) ==> Ffile_name_directory
+                         ;; DEFUN(POSIX::STREAM-LOCK, stream lockp &key BLOCK SHARED START LENGTH) ==> POSIX::STREAM-LOCK
+                        (progn
+                          (down-list 1)
+                          (when (= (char-after (point)) ?\")
+                             (forward-sexp 1)
+                             (search-forward ","))
+                           (skip-syntax-forward " ")
+                          (buffer-substring-no-properties
+                           (point)
+                           (progn (search-forward ",")
+                                   (forward-char -1)
+                                   (skip-syntax-backward " ")
+                                  (point))))
+                      (if (looking-at "^[+-]")
+                          ;; Objective-C
+                          (change-log-get-method-definition)
+                        ;; Ordinary C function syntax.
+                        (setq beg (point))
+                        (if (and
+                             ;; Protect against "Unbalanced parens" error.
+                             (condition-case nil
+                                 (progn
+                                   (down-list 1) ; into arglist
+                                   (backward-up-list 1)
+                                   (skip-chars-backward " \t")
+                                   t)
+                               (error nil))
+                             ;; Verify initial pos was after
+                             ;; real start of function.
+                             (save-excursion
+                               (goto-char beg)
+                               ;; For this purpose, include the line
+                               ;; that has the decl keywords.  This
+                               ;; may also include some of the
+                               ;; comments before the function.
+                               (while (and (not (bobp))
+                                           (save-excursion
+                                             (forward-line -1)
+                                             (looking-at "[^\n\f]")))
+                                 (forward-line -1))
+                               (>= location (point)))
+                             ;; Consistency check: going down and up
+                             ;; shouldn't take us back before BEG.
+                             (> (point) beg))
+                            (let (end middle)
+                              ;; Don't include any final whitespace
+                              ;; in the name we use.
+                              (skip-chars-backward " \t\n")
+                              (setq end (point))
+                              (backward-sexp 1)
+                              ;; Now find the right beginning of the name.
+                              ;; Include certain keywords if they
+                              ;; precede the name.
+                              (setq middle (point))
+                              (forward-word -1)
+                              ;; Is this C++ method?
+                              (when (and (< 2 middle)
+                                         (string= (buffer-substring (- middle 2)
+                                                                    middle)
+                                                  "::"))
+                                ;; Include "classname::".
+                                (setq middle (point)))
+                              ;; Ignore these subparts of a class decl
+                              ;; and move back to the class name itself.
+                              (while (looking-at "public \\|private ")
+                                (skip-chars-backward " \t:")
+                                (setq end (point))
+                                (backward-sexp 1)
+                                (setq middle (point))
+                                (forward-word -1))
+                              (and (bolp)
+                                   (looking-at
+                                    "enum \\|struct \\|union \\|class ")
+                                   (setq middle (point)))
+                              (goto-char end)
+                              (when (eq (preceding-char) ?=)
+                                (forward-char -1)
+                                (skip-chars-backward " \t")
+                                (setq end (point)))
+                              (buffer-substring-no-properties
+                               middle end))))))))
                ((memq major-mode add-log-tex-like-modes)
                 (if (re-search-backward
-                     "\\\\\\(sub\\)*\\(section\\|paragraph\\|chapter\\)" nil t)
+                     "\\\\\\(sub\\)*\\(section\\|paragraph\\|chapter\\)"
+                     nil t)
                     (progn
                       (goto-char (match-beginning 0))
-                      (buffer-substring (1+ (point));; without initial backslash
-                                        (progn
-                                          (end-of-line)
-                                          (point))))))
+                      (buffer-substring-no-properties
+                       (1+ (point))    ; without initial backslash
+                       (line-end-position)))))
                ((eq major-mode 'texinfo-mode)
                 (if (re-search-backward "^@node[ \t]+\\([^,\n]+\\)" nil t)
-                    (buffer-substring (match-beginning 1)
-                                      (match-end 1))))
-               ((eq major-mode 'perl-mode)
-                (if (re-search-backward "^sub[ \t]+\\([^ \t\n]+\\)" nil t)
-                    (buffer-substring (match-beginning 1)
-                                      (match-end 1))))
-                ((or (eq major-mode 'fortran-mode)
-                    ;; Needs work for f90, but better than nothing.
-                    (eq major-mode 'f90-mode))
-                 ;; must be inside function body for this to work
-                 (beginning-of-fortran-subprogram)
-                 (let ((case-fold-search t)) ; case-insensitive
-                   ;; search for fortran subprogram start
-                   (if (re-search-forward
-                        "^[ \t]*\\(program\\|subroutine\\|function\
-\\|[ \ta-z0-9*()]*[ \t]+function\\|\\(block[ \t]*data\\)\\)"
-                        (progn (end-of-fortran-subprogram)
-                               (point))
-                        t)
-                       (or (match-string 2)
-                       (progn
-                         ;; move to EOL or before first left paren
-                         (if (re-search-forward "[(\n]" nil t)
-                                (progn (backward-char)
-                                   (skip-chars-backward " \t"))
-                          (end-of-line))
-                        ;; Use the name preceding that.
-                         (buffer-substring (point)
-                                              (progn (backward-sexp)
-                                                     (point)))))
-                    "main")))
+                    (match-string-no-properties 1)))
+               ((memq major-mode '(perl-mode cperl-mode))
+                (if (re-search-backward "^sub[ \t]+\\([^({ \t\n]+\\)" nil t)
+                    (match-string-no-properties 1)))
+               ;; Emacs's autoconf-mode installs its own
+               ;; `add-log-current-defun-function'.  This applies to
+               ;; a different mode apparently for editing .m4
+               ;; autoconf source.
+                ((eq major-mode 'autoconf-mode)
+                 (if (re-search-backward
+                     "^\\(\\(m4_\\)?define\\|A._DEFUN\\)(\\[?\\([A-Za-z0-9_]+\\)" nil t)
+                     (match-string-no-properties 3)))
                (t
                 ;; If all else fails, try heuristics
-                (let (case-fold-search)
+                (let (case-fold-search
+                      result)
                   (end-of-line)
-                  (if (re-search-backward add-log-current-defun-header-regexp
-                                          (- (point) 10000)
-                                          t)
-                      (buffer-substring (match-beginning 1)
-                                        (match-end 1))))))))
+                  (when (re-search-backward
+                         add-log-current-defun-header-regexp
+                         (- (point) 10000)
+                         t)
+                    (setq result (or (match-string-no-properties 1)
+                                     (match-string-no-properties 0)))
+                    ;; Strip whitespace away
+                    (when (string-match "\\([^ \t\n\r\f].*[^ \t\n\r\f]\\)"
+                                        result)
+                      (setq result (match-string-no-properties 1 result)))
+                    result))))))
     (error nil)))
 
 (defvar change-log-get-method-definition-md)
@@ -672,12 +991,12 @@ Has a preference of looking backwards."
 (defun change-log-get-method-definition-1 (end)
   (setq change-log-get-method-definition-md
        (concat change-log-get-method-definition-md
-               (buffer-substring (match-beginning 1) (match-end 1))
+               (match-string 1)
                end))
   (goto-char (match-end 0)))
 
-;; For objective C, return the method name if we are in a method.
 (defun change-log-get-method-definition ()
+"For Objective C, return the method name if we are in a method."
   (let ((change-log-get-method-definition-md "["))
     (save-excursion
       (if (re-search-backward "^@implementation\\s-*\\([A-Za-z_]*\\)" nil t)
@@ -691,8 +1010,107 @@ Has a preference of looking backwards."
           "\\([A-Za-z_]*:?\\)\\s-*\\(([^)]*)\\)?[A-Za-z_]*[ \t\n\f\r]*")
          (change-log-get-method-definition-1 ""))
        (concat change-log-get-method-definition-md "]"))))))
+\f
+(defun change-log-sortable-date-at ()
+  "Return date of log entry in a consistent form for sorting.
+Point is assumed to be at the start of the entry."
+  (require 'timezone)
+  (if (looking-at "^\\sw.........[0-9:+ ]*")
+      (let ((date (match-string-no-properties 0)))
+       (if date
+           (if (string-match "\\(....\\)-\\(..\\)-\\(..\\)\\s-+" date)
+               (concat (match-string 1 date) (match-string 2 date)
+                       (match-string 3 date))
+             (condition-case nil
+                 (timezone-make-date-sortable date)
+               (error nil)))))
+    (error "Bad date")))
+
+(defun change-log-resolve-conflict ()
+  "Function to be used in `smerge-resolve-function'."
+  (let ((buf (current-buffer)))
+    (with-temp-buffer
+      (insert-buffer-substring buf (match-beginning 1) (match-end 1))
+      (save-match-data (change-log-mode))
+      (let ((other-buf (current-buffer)))
+       (with-current-buffer buf
+         (save-excursion
+           (save-restriction
+             (narrow-to-region (match-beginning 0) (match-end 0))
+             (replace-match (match-string 3) t t)
+             (change-log-merge other-buf))))))))
 
+;;;###autoload
+(defun change-log-merge (other-log)
+  "Merge the contents of change log file OTHER-LOG with this buffer.
+Both must be found in Change Log mode (since the merging depends on
+the appropriate motion commands).  OTHER-LOG can be either a file name
+or a buffer.
+
+Entries are inserted in chronological order.  Both the current and
+old-style time formats for entries are supported."
+  (interactive "*fLog file name to merge: ")
+  (if (not (eq major-mode 'change-log-mode))
+      (error "Not in Change Log mode"))
+  (let ((other-buf (if (bufferp other-log) other-log
+                    (find-file-noselect other-log)))
+       (buf (current-buffer))
+       date1 start end)
+    (save-excursion
+      (goto-char (point-min))
+      (set-buffer other-buf)
+      (goto-char (point-min))
+      (if (not (eq major-mode 'change-log-mode))
+         (error "%s not found in Change Log mode" other-log))
+      ;; Loop through all the entries in OTHER-LOG.
+      (while (not (eobp))
+       (setq date1 (change-log-sortable-date-at))
+       (setq start (point)
+             end (progn (forward-page) (point)))
+       ;; Look for an entry in original buffer that isn't later.
+       (with-current-buffer buf
+         (while (and (not (eobp))
+                     (string< date1 (change-log-sortable-date-at)))
+           (forward-page))
+         (if (not (eobp))
+             (insert-buffer-substring other-buf start end)
+           ;; At the end of the original buffer, insert a newline to
+           ;; separate entries and then the rest of the file being
+           ;; merged.
+           (unless (or (bobp)
+                       (and (= ?\n (char-before))
+                            (or (<= (1- (point)) (point-min))
+                                (= ?\n (char-before (1- (point)))))))
+             (insert (if use-hard-newlines hard-newline "\n")))
+           ;; Move to the end of it to terminate outer loop.
+           (with-current-buffer other-buf
+             (goto-char (point-max)))
+           (insert-buffer-substring other-buf start)))))))
+
+;;;###autoload
+(defun change-log-redate ()
+  "Fix any old-style date entries in the current log file to default format."
+  (interactive)
+  (require 'timezone)
+  (save-excursion
+    (goto-char (point-min))
+    (while (re-search-forward "^\\sw.........[0-9:+ ]*" nil t)
+      (unless (= 12 (- (match-end 0) (match-beginning 0)))
+       (let* ((date (save-match-data
+                      (timezone-fix-time (match-string 0) nil nil)))
+              (zone (if (consp (aref date 6))
+                        (nth 1 (aref date 6)))))
+         (replace-match (format-time-string
+                         "%Y-%m-%d  "
+                         (encode-time (aref date 5)
+                                      (aref date 4)
+                                      (aref date 3)
+                                      (aref date 2)
+                                      (aref date 1)
+                                      (aref date 0)
+                                      zone))))))))
 
 (provide 'add-log)
 
+;; arch-tag: 81eee6fc-088f-4372-a37f-80ad9620e762
 ;;; add-log.el ends here