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diff --git a/lisp/vc/add-log.el b/lisp/vc/add-log.el new file mode 100644 index 00000000000..88277e66640 --- /dev/null +++ b/lisp/vc/add-log.el @@ -0,0 +1,1365 @@ +;;; add-log.el --- change log maintenance commands for Emacs + +;; Copyright (C) 1985, 1986, 1988, 1993, 1994, 1997, 1998, 2000, 2001, +;; 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 +;; Free Software Foundation, Inc. + +;; Maintainer: FSF +;; Keywords: tools + +;; This file is part of GNU Emacs. + +;; GNU Emacs is free software: you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation, either version 3 of the License, or +;; (at your option) any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. + +;;; Commentary: + +;; This facility is documented in the Emacs Manual. + +;; Todo: + +;; - Find/use/create _MTN/log if there's a _MTN directory. +;; - Find/use/create ++log.* if there's an {arch} directory. +;; - Use an open *VC-Log* or *cvs-commit* buffer if it's related to the +;; source file. +;; - Don't add TAB indents (and username?) if inserting entries in those +;; special places. + +;;; Code: + +(eval-when-compile + (require 'timezone)) + +(defgroup change-log nil + "Change log maintenance." + :group 'tools + :link '(custom-manual "(emacs)Change Log") + :prefix "change-log-" + :prefix "add-log-") + + +(defcustom change-log-default-name nil + "Name of a change log file for \\[add-change-log-entry]." + :type '(choice (const :tag "default" nil) + string) + :group 'change-log) +;;;###autoload +(put 'change-log-default-name 'safe-local-variable 'string-or-null-p) + +(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 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 function `user-full-name'." + :type '(choice (const :tag "Default" nil) + string) + :group 'change-log) + +;;;###autoload +(defcustom add-log-mailing-address nil + "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 :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. +For example, `add-log-iso8601-time-string', which gives the +date in international ISO 8601 format, +and `current-time-string' are two valid values." + :type '(radio (const :tag "International ISO 8601 format" + add-log-iso8601-time-string) + (const :tag "Old format, as returned by `current-time-string'" + current-time-string) + (function :tag "Other")) + :group 'change-log) + +(defcustom add-log-keep-changes-together nil + "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 \ +for that file made +today if this variable is non-nil or that file comes first in today's +entries. Otherwise another entry for that file will be started. An +original log: + + * foo (...): ... + * bar (...): change 1 + +in the latter case, \\[add-change-log-entry-other-window] in a \ +buffer visiting `bar', yields: + + * bar (...): -!- + * foo (...): ... + * bar (...): change 1 + +and in the former: + + * foo (...): ... + * bar (...): change 1 + (...): -!- + +The NEW-ENTRY arg to `add-change-log-entry' can override the effect of +this variable." + :version "20.3" + :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) +(define-obsolete-face-alias 'change-log-date-face 'change-log-date "22.1") + +(defface change-log-name + '((t (:inherit font-lock-constant-face))) + "Face for highlighting author names." + :version "21.1" + :group 'change-log) +(define-obsolete-face-alias 'change-log-name-face 'change-log-name "22.1") + +(defface change-log-email + '((t (:inherit font-lock-variable-name-face))) + "Face for highlighting author email addresses." + :version "21.1" + :group 'change-log) +(define-obsolete-face-alias 'change-log-email-face 'change-log-email "22.1") + +(defface change-log-file + '((t (:inherit font-lock-function-name-face))) + "Face for highlighting file names." + :version "21.1" + :group 'change-log) +(define-obsolete-face-alias 'change-log-file-face 'change-log-file "22.1") + +(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) +(define-obsolete-face-alias 'change-log-list-face 'change-log-list "22.1") + +(defface change-log-conditionals + '((t (:inherit font-lock-variable-name-face))) + "Face for highlighting conditionals of the form `[...]'." + :version "21.1" + :group 'change-log) +(define-obsolete-face-alias 'change-log-conditionals-face + 'change-log-conditionals "22.1") + +(defface change-log-function + '((t (:inherit font-lock-variable-name-face))) + "Face for highlighting items of the form `<....>'." + :version "21.1" + :group 'change-log) +(define-obsolete-face-alias 'change-log-function-face + 'change-log-function "22.1") + +(defface change-log-acknowledgement + '((t (:inherit font-lock-comment-face))) + "Face for highlighting acknowledgments." + :version "21.1" + :group 'change-log) +(define-obsolete-face-alias 'change-log-acknowledgement-face + 'change-log-acknowledgement "22.1") + +(defconst change-log-file-names-re "^\\( +\\|\t\\)\\* \\([^ ,:([\n]+\\)") +(defconst change-log-start-entry-re "^\\sw.........[0-9:+ ]*") + +(defvar change-log-font-lock-keywords + `(;; + ;; 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-]+ +\\|^ \\{11,\\}\\|^\\(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. + (,change-log-file-names-re + (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. + ("^\\( +\\|\t\\)(\\([^(),\n]+\\|(\\(setf\\|SETF\\) [^() ,\n]+)\\)" + (2 'change-log-list) + ("\\=, *\\([^(),\n]+\\|(\\(setf\\|SETF\\) [^() ,\n]+)\\)" nil nil + (1 'change-log-list))) + ;; + ;; Conditionals. + ("\\[!?\\([^]\n]+\\)\\]\\(:\\| (\\)" (1 'change-log-conditionals)) + ;; + ;; Function of change. + ("<\\([^>\n]+\\)>\\(:\\| (\\)" (1 'change-log-function)) + ;; + ;; Acknowledgements. + ;; 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.") + +(defun change-log-search-file-name (where) + "Return the file-name for the change under point." + (save-excursion + (goto-char where) + (beginning-of-line 1) + (if (looking-at change-log-start-entry-re) + ;; We are at the start of an entry, search forward for a file + ;; name. + (progn + (re-search-forward change-log-file-names-re nil t) + (match-string-no-properties 2)) + (if (looking-at change-log-file-names-re) + ;; We found a file name. + (match-string-no-properties 2) + ;; Look backwards for either a file name or the log entry start. + (if (re-search-backward + (concat "\\(" change-log-start-entry-re + "\\)\\|\\(" + change-log-file-names-re "\\)") nil t) + (if (match-beginning 1) + ;; We got the start of the entry, look forward for a + ;; file name. + (progn + (re-search-forward change-log-file-names-re nil t) + (match-string-no-properties 2)) + (match-string-no-properties 4)) + ;; We must be before any file name, look forward. + (re-search-forward change-log-file-names-re nil t) + (match-string-no-properties 2)))))) + +(defun change-log-find-file () + "Visit the file for the change under point." + (interactive) + (let ((file (change-log-search-file-name (point)))) + (if (and file (file-exists-p file)) + (find-file file) + (message "No such file or directory: %s" file)))) + +(defun change-log-search-tag-name-1 (&optional from) + "Search for a tag name within subexpression 1 of last match. +Optional argument FROM specifies a buffer position where the tag +name should be located. Return value is a cons whose car is the +string representing the tag and whose cdr is the position where +the tag was found." + (save-restriction + (narrow-to-region (match-beginning 1) (match-end 1)) + (when from (goto-char from)) + ;; The regexp below skips any symbol near `point' (FROM) followed by + ;; whitespace and another symbol. This should skip, for example, + ;; "struct" in a specification like "(struct buffer)" and move to + ;; "buffer". A leading paren is ignored. + (when (looking-at + "[(]?\\(?:\\(?:\\sw\\|\\s_\\)+\\(?:[ \t]+\\(\\sw\\|\\s_\\)+\\)\\)") + (goto-char (match-beginning 1))) + (cons (find-tag-default) (point)))) + +(defconst change-log-tag-re + "(\\(\\(?:\\sw\\|\\s_\\)+\\(?:[, \t]+\\(?:\\sw\\|\\s_\\)+\\)*\\))" + "Regexp matching a tag name in change log entries.") + +(defun change-log-search-tag-name (&optional at) + "Search for a tag name near `point'. +Optional argument AT non-nil means search near buffer position AT. +Return value is a cons whose car is the string representing +the tag and whose cdr is the position where the tag was found." + (save-excursion + (goto-char (setq at (or at (point)))) + (save-restriction + (widen) + (or (condition-case nil + ;; Within parenthesized list? + (save-excursion + (backward-up-list) + (when (looking-at change-log-tag-re) + (change-log-search-tag-name-1 at))) + (error nil)) + (condition-case nil + ;; Before parenthesized list on same line? + (save-excursion + (when (and (skip-chars-forward " \t") + (looking-at change-log-tag-re)) + (change-log-search-tag-name-1))) + (error nil)) + (condition-case nil + ;; Near file name? + (save-excursion + (when (and (progn + (beginning-of-line) + (looking-at change-log-file-names-re)) + (goto-char (match-end 0)) + (skip-syntax-forward " ") + (looking-at change-log-tag-re)) + (change-log-search-tag-name-1))) + (error nil)) + (condition-case nil + ;; Anywhere else within current entry? + (let ((from + (save-excursion + (end-of-line) + (if (re-search-backward change-log-start-entry-re nil t) + (match-beginning 0) + (point-min)))) + (to + (save-excursion + (end-of-line) + (if (re-search-forward change-log-start-entry-re nil t) + (match-beginning 0) + (point-max))))) + (when (and (< from to) (<= from at) (<= at to)) + (save-restriction + ;; Narrow to current change log entry. + (narrow-to-region from to) + (cond + ((re-search-backward change-log-tag-re nil t) + (narrow-to-region (match-beginning 1) (match-end 1)) + (goto-char (point-max)) + (cons (find-tag-default) (point-max))) + ((re-search-forward change-log-tag-re nil t) + (narrow-to-region (match-beginning 1) (match-end 1)) + (goto-char (point-min)) + (cons (find-tag-default) (point-min))))))) + (error nil)))))) + +(defvar change-log-find-head nil) +(defvar change-log-find-tail nil) +(defvar change-log-find-window nil) + +(defun change-log-goto-source-1 (tag regexp file buffer + &optional window first last) + "Search for tag TAG in buffer BUFFER visiting file FILE. +REGEXP is a regular expression for TAG. The remaining arguments +are optional: WINDOW denotes the window to display the results of +the search. FIRST is a position in BUFFER denoting the first +match from previous searches for TAG. LAST is the position in +BUFFER denoting the last match for TAG in the last search." + (with-current-buffer buffer + (save-excursion + (save-restriction + (widen) + (if last + (progn + ;; When LAST is set make sure we continue from the next + ;; line end to not find the same tag again. + (goto-char last) + (end-of-line) + (condition-case nil + ;; Try to go to the end of the current defun to avoid + ;; false positives within the current defun's body + ;; since these would match `add-log-current-defun'. + (end-of-defun) + ;; Don't fall behind when `end-of-defun' fails. + (error (progn (goto-char last) (end-of-line)))) + (setq last nil)) + ;; When LAST was not set start at beginning of BUFFER. + (goto-char (point-min))) + (let (current-defun) + (while (and (not last) (re-search-forward regexp nil t)) + ;; Verify that `add-log-current-defun' invoked at the end + ;; of the match returns TAG. This heuristic works well + ;; whenever the name of the defun occurs within the first + ;; line of the defun. + (setq current-defun (add-log-current-defun)) + (when (and current-defun (string-equal current-defun tag)) + ;; Record this as last match. + (setq last (line-beginning-position)) + ;; Record this as first match when there's none. + (unless first (setq first last))))))) + (if (or last first) + (with-selected-window + (setq change-log-find-window (or window (display-buffer buffer))) + (if last + (progn + (when (or (< last (point-min)) (> last (point-max))) + ;; Widen to show TAG. + (widen)) + (push-mark) + (goto-char last)) + ;; When there are no more matches go (back) to FIRST. + (message "No more matches for tag `%s' in file `%s'" tag file) + (setq last first) + (goto-char first)) + ;; Return new "tail". + (list (selected-window) first last)) + (message "Source location of tag `%s' not found in file `%s'" tag file) + nil))) + +(defun change-log-goto-source () + "Go to source location of \"change log tag\" near `point'. +A change log tag is a symbol within a parenthesized, +comma-separated list. If no suitable tag can be found nearby, +try to visit the file for the change under `point' instead." + (interactive) + (if (and (eq last-command 'change-log-goto-source) + change-log-find-tail) + (setq change-log-find-tail + (condition-case nil + (apply 'change-log-goto-source-1 + (append change-log-find-head change-log-find-tail)) + (error + (format "Cannot find more matches for tag `%s' in file `%s'" + (car change-log-find-head) + (nth 2 change-log-find-head))))) + (save-excursion + (let* ((at (point)) + (tag-at (change-log-search-tag-name)) + (tag (car tag-at)) + (file (when tag-at (change-log-search-file-name (cdr tag-at)))) + (file-at (when file (match-beginning 2))) + ;; `file-2' is the file `change-log-search-file-name' finds + ;; at `point'. We use `file-2' as a fallback when `tag' or + ;; `file' are not suitable for some reason. + (file-2 (change-log-search-file-name at)) + (file-2-at (when file-2 (match-beginning 2)))) + (cond + ((and (or (not tag) (not file) (not (file-exists-p file))) + (or (not file-2) (not (file-exists-p file-2)))) + (error "Cannot find tag or file near `point'")) + ((and file-2 (file-exists-p file-2) + (or (not tag) (not file) (not (file-exists-p file)) + (and (or (and (< file-at file-2-at) (<= file-2-at at)) + (and (<= at file-2-at) (< file-2-at file-at)))))) + ;; We either have not found a suitable file name or `file-2' + ;; provides a "better" file name wrt `point'. Go to the + ;; buffer of `file-2' instead. + (setq change-log-find-window + (display-buffer (find-file-noselect file-2)))) + (t + (setq change-log-find-head + (list tag (concat "\\_<" (regexp-quote tag) "\\_>") + file (find-file-noselect file))) + (condition-case nil + (setq change-log-find-tail + (apply 'change-log-goto-source-1 change-log-find-head)) + (error + (format "Cannot find matches for tag `%s' in file `%s'" + tag file))))))))) + +(defun change-log-next-error (&optional argp reset) + "Move to the Nth (default 1) next match in a ChangeLog buffer. +Compatibility function for \\[next-error] invocations." + (interactive "p") + (let* ((argp (or argp 0)) + (count (abs argp)) ; how many cycles + (down (< argp 0)) ; are we going down? (is argp negative?) + (up (not down)) + (search-function (if up 're-search-forward 're-search-backward))) + + ;; set the starting position + (goto-char (cond (reset (point-min)) + (down (line-beginning-position)) + (up (line-end-position)) + ((point)))) + + (funcall search-function change-log-file-names-re nil t count)) + + (beginning-of-line) + ;; if we found a place to visit... + (when (looking-at change-log-file-names-re) + (let (change-log-find-window) + (change-log-goto-source) + (when change-log-find-window + ;; Select window displaying source file. + (select-window change-log-find-window))))) + +(defvar change-log-mode-map + (let ((map (make-sparse-keymap)) + (menu-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) + (define-key map [?\C-c ?\C-f] 'change-log-find-file) + (define-key map [?\C-c ?\C-c] 'change-log-goto-source) + (define-key map [menu-bar changelog] (cons "ChangeLog" menu-map)) + (define-key menu-map [gs] + '(menu-item "Go To Source" change-log-goto-source + :help "Go to source location of ChangeLog tag near point")) + (define-key menu-map [ff] + '(menu-item "Find File" change-log-find-file + :help "Visit the file for the change under point")) + (define-key menu-map [sep] '("--")) + (define-key menu-map [nx] + '(menu-item "Next Log-Edit Comment" add-log-edit-next-comment + :help "Cycle forward through Log-Edit mode comment history")) + (define-key menu-map [pr] + '(menu-item "Previous Log-Edit Comment" add-log-edit-prev-comment + :help "Cycle backward through Log-Edit mode comment history")) + map) + "Keymap for Change Log major mode.") + +;; 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 t, use universal time.") +(put 'add-log-time-zone-rule 'safe-local-variable + '(lambda (x) (or (booleanp x) (stringp x)))) + +(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)) + (ss (% sec 60)) + (min (/ sec 60)) + (mm (% min 60)) + (hh (/ min 60))) + (format (cond ((not (zerop ss)) "%c%02d:%02d:%02d") + ((not (zerop mm)) "%c%02d:%02d") + (t "%c%02d")) + sign hh mm ss))) + +(defvar add-log-iso8601-with-time-zone nil) + +(defun add-log-iso8601-time-string () + (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 + "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." + (let* ((default (change-log-name)) + (name (expand-file-name + (read-file-name (format "Log file (default %s): " default) + nil default)))) + ;; Handle something that is syntactically a directory name. + ;; Look for ChangeLog or whatever in that directory. + (if (string= (file-name-nondirectory name) "") + (expand-file-name (file-name-nondirectory default) + name) + ;; Handle specifying a file that is a directory. + (if (file-directory-p name) + (expand-file-name (file-name-nondirectory default) + (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-working-revision' 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-working-revision 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))))) + +(declare-function diff-find-source-location "diff-mode" + (&optional other-file reverse noprompt)) + +;;;###autoload +(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' +\(or whatever we use on this operating system). + +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. +Optional arg BUFFER-FILE overrides `buffer-file-name'." + ;; If we are called from a diff, first switch to the source buffer; + ;; in order to respect buffer-local settings of change-log-default-name, etc. + (with-current-buffer (let ((buff (if (eq major-mode 'diff-mode) + (car (ignore-errors + (diff-find-source-location)))))) + (if (buffer-live-p buff) buff + (current-buffer))) + ;; If user specified a file name or if this buffer knows which one to use, + ;; just use that. + (or file-name + (setq file-name (and change-log-default-name + (file-name-directory change-log-default-name) + change-log-default-name)) + (progn + ;; Chase links in the source file + ;; and use the change log in the dir where it points. + (setq file-name (or (and (or buffer-file buffer-file-name) + (file-name-directory + (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))) + ;; Chase links before visiting the file. + ;; This makes it easier to use a single change log file + ;; for several related directories. + (setq file-name (file-chase-links file-name)) + (setq file-name (expand-file-name file-name)) + ;; Move up in the dir hierarchy till we find a change log file. + (let ((file1 file-name) + parent-dir) + (while (and (not (or (get-file-buffer file1) (file-exists-p file1))) + (progn (setq parent-dir + (file-name-directory + (directory-file-name + (file-name-directory file1)))) + ;; Give up if we are already at the root dir. + (not (string= (file-name-directory file1) + parent-dir)))) + ;; Move up to the parent dir and try again. + (setq file1 (expand-file-name + (file-name-nondirectory (change-log-name)) + parent-dir))) + ;; If we found a change log in a parent, use that. + (if (or (get-file-buffer file1) (file-exists-p file1)) + (setq file-name file1))))) + ;; Make a local variable in this buffer so we needn't search again. + (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 + (file-relative-name buffer-file (file-name-directory log-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 + put-new-entry-on-new-line) + "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 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'. + +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. + +Fifth arg PUT-NEW-ENTRY-ON-NEW-LINE non-nil means that if a new +entry is created, put it on a new line by itself, do not put it +after a comma on an existing line. + +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))) + (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))) + + (unless (equal file-name buffer-file-name) + (cond + ((equal file-name (buffer-file-name (window-buffer (selected-window)))) + ;; If the selected window already shows the desired buffer don't show + ;; it again (particularly important if other-window is true). + ;; This is important for diff-add-change-log-entries-other-window. + (set-buffer (window-buffer (selected-window)))) + ((or other-window (window-dedicated-p (selected-window))) + (find-file-other-window file-name)) + (t (find-file file-name)))) + (or (derived-mode-p 'change-log-mode) + (change-log-mode)) + (undo-boundary) + (goto-char (point-min)) + + (let ((full-name (or add-log-full-name (user-full-name))) + (mailing-address (or add-log-mailing-address user-mail-address))) + + (when whoami + (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))) + + ;; 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 (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. + (let ((bound + (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)))) + + ;; Now insert the new line for this item. + (cond ((re-search-forward "^\\s *\\*\\s *$" bound t) + ;; Put this file name into the existing empty item. + (if item + (insert item))) + ((and (not new-entry) + (let (case-fold-search) + (re-search-forward + (concat (regexp-quote (concat "* " item)) + ;; Don't accept `foo.bar' when + ;; looking for `foo': + "\\(\\s \\|[(),:]\\)") + bound t))) + ;; Add to the existing item for the same file. + (re-search-forward "^\\s *$\\|^\\s \\*") + (goto-char (match-beginning 0)) + ;; Delete excess empty lines; make just 2. + (while (and (not (eobp)) (looking-at "^\\s *$")) + (delete-region (point) (line-beginning-position 2))) + (insert (if use-hard-newlines hard-newline "\n") + (if use-hard-newlines hard-newline "\n")) + (forward-line -2) + (indent-relative-maybe)) + (t + ;; Make a new item. + (while (looking-at "\\sW") + (forward-line 1)) + (while (and (not (eobp)) (looking-at "^\\s *$")) + (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 "* ") + (if item (insert item))))) + ;; Now insert the function name, if we have one. + ;; Point is at the item for this file, + ;; either at the end of the line or at the first blank line. + (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 (not put-new-entry-on-new-line) + (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 ", "))) + (when (and (not put-new-entry-on-new-line) (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 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)) + + +(defvar change-log-indent-text 0) + +(defun change-log-fill-parenthesized-list () + ;; Fill parenthesized lists of names according to GNU standards. + ;; * file-name.ext (very-long-foo, very-long-bar, very-long-foobar): + ;; should be filled as + ;; * file-name.ext (very-long-foo, very-long-bar) + ;; (very-long-foobar): + (save-excursion + (end-of-line 0) + (skip-chars-backward " \t") + (when (and (equal (char-before) ?\,) + (> (point) (1+ (point-min)))) + (condition-case nil + (when (save-excursion + (and (prog2 + (up-list -1) + (equal (char-after) ?\() + (skip-chars-backward " \t")) + (or (bolp) + ;; Skip everything but a whitespace or asterisk. + (and (not (zerop (skip-chars-backward "^ \t\n*"))) + (skip-chars-backward " \t") + ;; We want one asterisk here. + (= (skip-chars-backward "*") -1) + (skip-chars-backward " \t") + (bolp))))) + ;; Delete the comma. + (delete-char -1) + ;; Close list on previous line. + (insert ")") + (skip-chars-forward " \t\n") + ;; Start list on new line. + (insert-before-markers "(")) + (error nil))))) + +(defun change-log-indent () + (change-log-fill-parenthesized-list) + (let* ((indent + (save-excursion + (beginning-of-line) + (skip-chars-forward " \t") + (cond + ((and (looking-at "\\(.*\\) [^ \n].*[^ \n] <.*>\\(?: +(.*)\\)? *$") + ;; Matching the output of add-log-time-format is difficult, + ;; but I'll get it has at least two adjacent digits. + (string-match "[[:digit:]][[:digit:]]" (match-string 1))) + 0) + ((looking-at "[^*(]") + (+ (current-left-margin) change-log-indent-text)) + (t (current-left-margin))))) + (pos (save-excursion (indent-line-to indent) (point)))) + (if (> pos (point)) (goto-char pos)))) + + +(defvar smerge-resolve-function) +(defvar copyright-at-end-flag) + +;;;###autoload +(define-derived-mode change-log-mode text-mode "Change Log" + "Major mode for editing change logs; like Indented Text mode. +Prevents numeric backups and sets `left-margin' to 8 and `fill-column' to 74. +New log entries are usually made with \\[add-change-log-entry] or \\[add-change-log-entry-other-window]. +Each entry behaves as a paragraph, and the entries for one day as a page. +Runs `change-log-mode-hook'. +\n\\{change-log-mode-map}" + (setq left-margin 8 + fill-column 74 + indent-tabs-mode t + tab-width 8 + show-trailing-whitespace t) + (set (make-local-variable 'fill-forward-paragraph-function) + 'change-log-fill-forward-paragraph) + ;; Make sure we call `change-log-indent' when filling. + (set (make-local-variable 'fill-indent-according-to-mode) t) + ;; Avoid that filling leaves behind a single "*" on a line. + (add-hook 'fill-nobreak-predicate + '(lambda () + (looking-back "^\\s *\\*\\s *" (line-beginning-position))) + nil t) + (set (make-local-variable 'indent-line-function) 'change-log-indent) + (set (make-local-variable 'tab-always-indent) nil) + (set (make-local-variable 'copyright-at-end-flag) t) + ;; We really do want "^" in paragraph-start below: it is only the + ;; lines that begin at column 0 (despite the left-margin of 8) that + ;; we are looking for. Adding `* ' allows eliding the blank line + ;; between entries for different files. + (set (make-local-variable 'paragraph-start) "\\s *$\\|\f\\|^\\<") + (set (make-local-variable 'paragraph-separate) 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 nil nil backward-paragraph)) + (set (make-local-variable 'multi-isearch-next-buffer-function) + 'change-log-next-buffer) + (set (make-local-variable 'beginning-of-defun-function) + 'change-log-beginning-of-defun) + (set (make-local-variable 'end-of-defun-function) + 'change-log-end-of-defun) + ;; next-error function glue + (setq next-error-function 'change-log-next-error) + (setq next-error-last-buffer (current-buffer))) + +(defun change-log-next-buffer (&optional buffer wrap) + "Return the next buffer in the series of ChangeLog file buffers. +This function is used for multiple buffers isearch. +A sequence of buffers is formed by ChangeLog files with decreasing +numeric file name suffixes in the directory of the initial ChangeLog +file were isearch was started." + (let* ((name (change-log-name)) + (files (cons name (sort (file-expand-wildcards + (concat name "[-.][0-9]*")) + (lambda (a b) + ;; The file's extension may not have a valid + ;; version form (e.g. VC backup revisions). + (ignore-errors + (version< (substring b (length name)) + (substring a (length name)))))))) + (files (if isearch-forward files (reverse files)))) + (find-file-noselect + (if wrap + (car files) + (cadr (member (file-name-nondirectory (buffer-file-name buffer)) + files)))))) + +(defun change-log-fill-forward-paragraph (n) + "Cut paragraphs so filling preserves open parentheses at beginning of lines." + (let (;; Add lines starting with whitespace followed by a left paren or an + ;; asterisk. + (paragraph-start (concat paragraph-start "\\|\\s *\\(?:\\s(\\|\\*\\)"))) + (forward-paragraph n))) + +(defcustom add-log-current-defun-header-regexp + "^\\([[:upper:]][[:upper:]_ ]*[[:upper:]_]\\|[-_[:alpha:]]+\\)[ \t]*[:=]" + "Heuristic regexp used by `add-log-current-defun' for unknown major modes. +The regexp's first submatch is placed in the ChangeLog entry, in +parentheses." + :type 'regexp + :group 'change-log) + +;;;###autoload +(defvar add-log-lisp-like-modes + '(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) + "*Modes that look like C to `add-log-current-defun'.") + +;;;###autoload +(defvar add-log-tex-like-modes + '(TeX-mode plain-TeX-mode LaTeX-mode tex-mode) + "*Modes that look like TeX to `add-log-current-defun'.") + +(declare-function c-cpp-define-name "cc-cmds" ()) +(declare-function c-defun-name "cc-cmds" ()) + +;;;###autoload +(defun add-log-current-defun () + "Return name of function definition point is in, or nil. + +Understands C, Lisp, LaTeX (\"functions\" are chapters, sections, ...), +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 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 (add-log-current-defun-function + (funcall add-log-current-defun-function)) + ((apply 'derived-mode-p 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. + (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))))) + ((apply 'derived-mode-p add-log-c-like-modes) + (or (c-cpp-define-name) + (c-defun-name))) + ((memq major-mode add-log-tex-like-modes) + (if (re-search-backward + "\\\\\\(sub\\)*\\(section\\|paragraph\\|chapter\\)" + nil t) + (progn + (goto-char (match-beginning 0)) + (buffer-substring-no-properties + (1+ (point)) ; without initial backslash + (line-end-position))))) + ((derived-mode-p 'texinfo-mode) + (if (re-search-backward "^@node[ \t]+\\([^,\n]+\\)" nil t) + (match-string-no-properties 1))) + ((derived-mode-p '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. + ((derived-mode-p '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 + result) + (end-of-line) + (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) + +;; Subroutine used within change-log-get-method-definition. +;; Add the last match in the buffer to the end of `md', +;; followed by the string END; move to the end of that match. +(defun change-log-get-method-definition-1 (end) + (setq change-log-get-method-definition-md + (concat change-log-get-method-definition-md + (match-string 1) + end)) + (goto-char (match-end 0))) + +(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) + (change-log-get-method-definition-1 " "))) + (save-excursion + (cond + ((re-search-forward "^\\([-+]\\)[ \t\n\f\r]*\\(([^)]*)\\)?\\s-*" nil t) + (change-log-get-method-definition-1 "") + (while (not (looking-at "[{;]")) + (looking-at + "\\([A-Za-z_]*:?\\)\\s-*\\(([^)]*)\\)?[A-Za-z_]*[ \t\n\f\r]*") + (change-log-get-method-definition-1 "")) + (concat change-log-get-method-definition-md "]")))))) + +(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 change-log-start-entry-re) + (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'." + (save-excursion + (save-restriction + (narrow-to-region (match-beginning 0) (match-end 0)) + (let ((mb1 (match-beginning 1)) + (me1 (match-end 1)) + (mb3 (match-beginning 3)) + (me3 (match-end 3)) + (tmp1 (generate-new-buffer " *changelog-resolve-1*")) + (tmp2 (generate-new-buffer " *changelog-resolve-2*"))) + (unwind-protect + (let ((buf (current-buffer))) + (with-current-buffer tmp1 + (change-log-mode) + (insert-buffer-substring buf mb1 me1)) + (with-current-buffer tmp2 + (change-log-mode) + (insert-buffer-substring buf mb3 me3) + ;; Do the merge here instead of inside `buf' so as to be + ;; more robust in case change-log-merge fails. + (change-log-merge tmp1)) + (goto-char (point-max)) + (delete-region (point-min) + (prog1 (point) + (insert-buffer-substring tmp2)))) + (kill-buffer tmp1) + (kill-buffer tmp2)))))) + +;;;###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 (derived-mode-p '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 (derived-mode-p '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))))))) + +(defun change-log-beginning-of-defun () + (re-search-backward change-log-start-entry-re nil 'move)) + +(defun change-log-end-of-defun () + ;; Look back and if there is no entry there it means we are before + ;; the first ChangeLog entry, so go forward until finding one. + (unless (save-excursion (re-search-backward change-log-start-entry-re nil t)) + (re-search-forward change-log-start-entry-re nil t)) + + ;; In case we are at the end of log entry going forward a line will + ;; make us find the next entry when searching. If we are inside of + ;; an entry going forward a line will still keep the point inside + ;; the same entry. + (forward-line 1) + + ;; In case we are at the beginning of an entry, move past it. + (when (looking-at change-log-start-entry-re) + (goto-char (match-end 0)) + (forward-line 1)) + + ;; Search for the start of the next log entry. Go to the end of the + ;; buffer if we could not find a next entry. + (when (re-search-forward change-log-start-entry-re nil 'move) + (goto-char (match-beginning 0)) + (forward-line -1))) + +(provide 'add-log) + +;; arch-tag: 81eee6fc-088f-4372-a37f-80ad9620e762 +;;; add-log.el ends here |