;;; add-log.el --- change log maintenance commands for Emacs -*- lexical-binding: t; -*- ;; Copyright (C) 1985-1986, 1988, 1993-1994, 1997-1998, 2000-2021 Free ;; Software Foundation, Inc. ;; Maintainer: emacs-devel@gnu.org ;; Keywords: vc 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 . ;;; 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 'cl-lib)) (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)) ;;;###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) ;; 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 called by `add-log-current-defun' with no argument, and should return the function's name as a string, or nil if point is outside a function." :type '(choice (const nil) function)) ;;;###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)) ;;;###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))) (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"))) (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) (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) (defvar add-log-buffer-file-name-function 'buffer-file-name "If non-nil, function to call to identify the full filename of a buffer. This function is called with no argument. The default is to use `buffer-file-name'.") (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)) (defcustom change-log-version-info-enabled nil "If non-nil, enable recording version numbers with the changes." :version "21.1" :type 'boolean) (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)) (defcustom change-log-directory-files '(".bzr" ".git" ".hg" ".svn") "List of files that cause `find-change-log' to stop in containing directory. This applies if no pre-existing ChangeLog is found. If nil, then in such a case simply use the directory containing the changed file." :version "26.1" :type '(repeat file)) (defface change-log-date '((t (:inherit font-lock-string-face))) "Face used to highlight dates in date lines." :version "21.1") (defface change-log-name '((t (:inherit font-lock-constant-face))) "Face for highlighting author names." :version "21.1") (defface change-log-email '((t (:inherit font-lock-variable-name-face))) "Face for highlighting author email addresses." :version "21.1") (defface change-log-file '((t (:inherit font-lock-function-name-face))) "Face for highlighting file names." :version "21.1") (defface change-log-list '((t (:inherit font-lock-keyword-face))) "Face for highlighting parenthesized lists of functions or variables." :version "21.1") (defface change-log-conditionals '((t (:inherit font-lock-variable-name-face))) "Face for highlighting conditionals of the form `[...]'." :version "21.1") (defface change-log-function '((t (:inherit font-lock-variable-name-face))) "Face for highlighting items of the form `<....>'." :version "21.1") (defface change-log-acknowledgment '((t (:inherit font-lock-comment-face))) "Face for highlighting acknowledgments." :version "21.1") (define-obsolete-face-alias 'change-log-acknowledgement 'change-log-acknowledgment "24.3") (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 regexp 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,\\}\\|^\t \\{3,\\}\\|^\\(Sun\\|Mon\\|Tue\\|Wed\\|Thu\\|Fri\\|Sat\\) [A-Z][a-z][a-z] [0-9:+ ]+" (0 'change-log-date) ;; 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)) ;; ;; Acknowledgments. ;; 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\\)\\| \\)\\(Thanks to\\|Patch\\(es\\)? by\\|Report\\(ed by\\| from\\)\\|Suggest\\(ed by\\|ion from\\)\\)" 3 'change-log-acknowledgment)) "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)))))) (defconst change-log-unindented-file-names-re "^[*] \\([^ ,:([\n]+\\)") (defun change-log-read-entries (&optional end) "Read ChangeLog entries at point until END. Move point to the end of entries that were read. Return a list in the same form as `diff-add-log-current-defuns'." (cl-loop while (and (or (not end) (< (point) end)) (looking-at change-log-unindented-file-names-re)) do (goto-char (match-end 0)) collect (cons (match-string-no-properties 1) (change-log-read-defuns end)))) (defvar change-log-tag-re) ; add-log.el (defun change-log-read-defuns (&optional end) "Read ChangeLog formatted function names at point until END. Move point to the end of names read and return the function names as a list of strings." (cl-loop while (and (skip-chars-forward ":\n[:blank:]" end) (or (not end) (< (point) end)) (looking-at change-log-tag-re)) do (goto-char (match-end 0)) nconc (split-string (match-string-no-properties 1) ",[[:blank:]]*" t) finally do (skip-chars-backward "\n[:blank:]"))) (defun change-log-insert-entries (changelogs) "Format and insert CHANGELOGS into current buffer. CHANGELOGS is a list in the form returned by `diff-add-log-current-defuns'." (cl-loop for (file . defuns) in changelogs do (insert "* " file) (if (not defuns) (insert ":\n") (insert " ") (cl-loop for def in defuns do (insert "(" def "):\n"))))) (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) (let ((buffer (current-buffer))) (change-log-goto-source-internal) (next-error-found buffer (current-buffer)))) (defun change-log-goto-source-internal () (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-message "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-message "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-internal) (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))) (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) map) "Keymap for Change Log major mode.") (easy-menu-define change-log-mode-menu change-log-mode-map "Menu for Change Log major mode." '("ChangeLog" ["Previous Log-Edit Comment" add-log-edit-prev-comment :help "Cycle backward through Log-Edit mode comment history"] ["Next Log-Edit Comment" add-log-edit-next-comment :help "Cycle forward through Log-Edit mode comment history"] "---" ["Find File" change-log-find-file :help "Visit the file for the change under point"] ["Go To Source" change-log-goto-source :help "Go to source location of ChangeLog tag near point"])) ;; 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 rule used for calculating change log time stamps. If nil, use local time. If t, use Universal Time. If a string, interpret as the ZONE argument of `format-time-string'.") (put 'add-log-time-zone-rule 'safe-local-variable (lambda (x) (or (booleanp x) (stringp x)))) (defun add-log-iso8601-time-zone (&optional time zone) (declare (obsolete nil "26.1")) (format-time-string "%:::z" time zone)) (defvar add-log-iso8601-with-time-zone nil) (defun add-log-iso8601-time-string (&optional time zone) (format-time-string (if add-log-iso8601-with-time-zone "%Y-%m-%d %:::z" "%Y-%m-%d") time zone)) (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-prompt "Log file" 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. Stop at the first such file that exists (or has a buffer visiting it), or the first directory that contains any of `change-log-directory-files'. If no match is found, use the current directory. To override the choice of this function, simply create an empty ChangeLog file first by hand in the desired place. 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 (derived-mode-p '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)) (let* ((cbase (file-name-nondirectory (change-log-name))) (root (locate-dominating-file file-name (lambda (dir) (or (let ((clog (expand-file-name cbase dir))) (or (get-file-buffer clog) (file-exists-p clog))) ;; Stop at VCS root? (and change-log-directory-files (let ((files change-log-directory-files) found) (while (and (not (setq found (file-exists-p (expand-file-name (car files) dir)))) (setq files (cdr files)))) found))))))) (if root (setq file-name (expand-file-name cbase root)))))) ;; Make a local variable in this buffer so we needn't search again. (setq-local change-log-default-name file-name)) file-name) (defun add-log-file-name (buffer-file log-file) "Compute file-name of BUFFER-FILE to be used in entries in 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 (let* ((dir (file-name-directory log-file)) (rel (file-relative-name buffer-file dir))) ;; Sometimes with symlinks, the two buffers may have names that ;; appear to belong to different directory trees. So check the ;; file-truenames, to see if we get a better result. (if (not (string-match "\\`\\.\\./" rel)) rel (let ((new (file-relative-name (file-truename buffer-file) (file-truename dir)))) (if (< (length new) (length rel)) new rel))))) ;; 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)))) (defcustom add-log-dont-create-changelog-file t "If non-nil, don't create ChangeLog files for log entries. If a ChangeLog file does not already exist, a non-nil value means to put log entries in a suitably named buffer." :type 'boolean :version "27.1") (put 'add-log-dont-create-changelog-file 'safe-local-variable #'booleanp) (defun add-log--pseudo-changelog-buffer-name (changelog-file-name) "Compute a suitable name for a non-file visiting ChangeLog buffer. CHANGELOG-FILE-NAME is the file name of the actual ChangeLog file if it were to exist." (format "*changes to %s*" (abbreviate-file-name (file-name-directory changelog-file-name)))) (defun add-log--changelog-buffer-p (changelog-file-name buffer) "Return non-nil if BUFFER holds a change log for CHANGELOG-FILE-NAME." (with-current-buffer buffer (if buffer-file-name (equal buffer-file-name changelog-file-name) (equal (add-log--pseudo-changelog-buffer-name changelog-file-name) (buffer-name))))) (defun add-log-find-changelog-buffer (changelog-file-name) "Find a ChangeLog buffer for CHANGELOG-FILE-NAME. Respect `add-log-use-pseudo-changelog', which see." (if (or (file-exists-p changelog-file-name) (not add-log-dont-create-changelog-file)) (find-file-noselect changelog-file-name) (get-buffer-create (add-log--pseudo-changelog-buffer-name changelog-file-name)))) ;;;###autoload (defun add-change-log-entry (&optional whoami changelog-file-name other-window new-entry put-new-entry-on-new-line) "Find ChangeLog buffer, 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 CHANGELOG-FILE-NAME is the file name of the change log. If nil, use the value of `change-log-default-name'. If the file thus named exists, it is used for the new entry. If it doesn't exist, it is created, unless `add-log-dont-create-changelog-file' is t, in which case a suitably named buffer that doesn't visit any file is used for keeping entries pertaining to CHANGELOG-FILE-NAME's directory. 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 (funcall add-log-buffer-file-name-function)) (buffer-file (if buf-file-name (expand-file-name buf-file-name))) (changelog-file-name (expand-file-name (find-change-log changelog-file-name buffer-file))) ;; Set ITEM to the file name to use in the new item. (item (add-log-file-name buffer-file changelog-file-name))) ;; don't add entries from the ChangeLog file/buffer to itself. (unless (equal changelog-file-name buffer-file-name) (cond ((add-log--changelog-buffer-p changelog-file-name (window-buffer)) ;; 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))) ((or other-window (window-dedicated-p)) (switch-to-buffer-other-window (add-log-find-changelog-buffer changelog-file-name))) (t (switch-to-buffer (add-log-find-changelog-buffer changelog-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 (funcall add-log-time-format nil add-log-time-zone-rule) " " 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) (and (looking-at (regexp-quote entry)) ;; Reject multiple author entries. (Bug#8645) (save-excursion (forward-line 1) (not (looking-at "[ \t]+.*<.*>$"))) (setq hit t))))) (forward-line 1) (insert (nth (random (length new-entries)) new-entries) (if use-hard-newlines hard-newline "\n") (if use-hard-newlines hard-newline "\n")) (forward-line -1)))) ;; Determine where we should stop searching for a usable ;; item to add to, within this entry. (let ((bound (save-excursion (if (looking-at "\n*[^\n* \t]") (skip-chars-forward "\n") (if add-log-keep-changes-together (forward-page) ; page delimits entries for date (forward-paragraph))) ; paragraph delimits entries for file (point)))) ;; Now insert the new line for this item. (cond ((re-search-forward "^\\s *\\* *$" 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. (if (re-search-forward "^\\s *$\\|^\\s \\*" nil t) (goto-char (match-beginning 0)) (goto-char (point-max)) (insert "\n")) ;; Delete excess empty lines; make just 2. (while (and (not (eobp)) (looking-at "^\\s *$")) (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-first-indent-point)) (t ;; Make a new item. (while (looking-at "\\sW") (forward-line 1)) (while (and (not (eobp)) (looking-at "^\\s *$")) (delete-region (point) (line-beginning-position 2))) (insert (if use-hard-newlines hard-newline "\n") (if use-hard-newlines hard-newline "\n") (if use-hard-newlines hard-newline "\n")) (forward-line -2) (indent-to left-margin) (insert "* ") (if item (insert item))))) ;; Now insert the function name, if we have one. ;; Point is at the item for this file, ;; either at the end of the line or at the first blank line. (if (not defun) ;; No function name, so put in a colon unless we have just a star. (unless (save-excursion (beginning-of-line 1) (looking-at "\\s *\\(\\* *\\)?$")) (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] <.*>\\(?: +(.*)\\)? *$") ;; Matching the output of add-log-time-format is difficult, ;; but I'll get it has at least two adjacent digits. (string-match "[[:digit:]][[:digit:]]" (match-string 1))) 0) ((looking-at "[^*(]") (+ (current-left-margin) change-log-indent-text)) (t (current-left-margin))))) (pos (save-excursion (indent-line-to indent) (point)))) (if (> pos (point)) (goto-char pos)))) (defvar smerge-resolve-function) (defvar copyright-at-end-flag) (defvar change-log-mode-syntax-table (let ((table (make-syntax-table))) (modify-syntax-entry ?` "' " table) (modify-syntax-entry ?' "' " table) table) "Syntax table used while in `change-log-mode'.") ;;;###autoload (define-derived-mode change-log-mode text-mode "Change Log" "Major mode for editing change logs; like Indented Text mode. Prevents numeric backups and sets `left-margin' to 8 and `fill-column' to 74. New log entries are usually made with \\[add-change-log-entry] or \\[add-change-log-entry-other-window]. Each entry behaves as a paragraph, and the entries for one day as a page. Runs `change-log-mode-hook'. \n\\{change-log-mode-map}" (setq left-margin 8 fill-column 74 indent-tabs-mode t tab-width 8 show-trailing-whitespace t) (setq-local fill-forward-paragraph-function 'change-log-fill-forward-paragraph) (setq-local comment-start nil) ;; Make sure we call `change-log-indent' when filling. (setq-local fill-indent-according-to-mode t) ;; Avoid that filling leaves behind a single "*" on a line. (add-hook 'fill-nobreak-predicate (lambda () (looking-back "^\\s *\\*\\s *" (line-beginning-position))) nil t) (setq-local indent-line-function 'change-log-indent) (setq-local tab-always-indent nil) (setq-local copyright-at-end-flag t) ;; We really do want "^" in paragraph-start below: it is only the ;; lines that begin at column 0 (despite the left-margin of 8) that ;; we are looking for. Adding `* ' allows eliding the blank line ;; between entries for different files. (setq-local paragraph-start "\\s *$\\|\f\\|^\\<") (setq-local paragraph-separate paragraph-start) ;; Match null string on the date-line so that the date-line ;; is grouped with what follows. (setq-local page-delimiter "^\\<\\|^\f") (setq-local version-control 'never) (setq-local smerge-resolve-function 'change-log-resolve-conflict) (setq-local adaptive-fill-regexp "\\s *") (setq-local font-lock-defaults '(change-log-font-lock-keywords t nil nil backward-paragraph)) (setq-local multi-isearch-next-buffer-function 'change-log-next-buffer) (setq-local beginning-of-defun-function 'change-log-beginning-of-defun) (setq-local end-of-defun-function 'change-log-end-of-defun) ;; next-error function glue (setq next-error-function 'change-log-next-error)) (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 (append (and (file-exists-p name) (list 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))) (file (if wrap (car files) (cadr (member (file-name-nondirectory (buffer-file-name buffer)) files))))) ;; If there are no files that match the default pattern ChangeLog.[0-9], ;; return the current buffer to force isearch wrapping to its beginning. ;; If file is nil, multi-isearch-search-fun will signal "end of multi". (cond ;; Wrapping doesn't catch errors from the nil arg of file-exists-p, ;; so handle it explicitly. ((and wrap (null file)) (current-buffer)) ;; When there is no next file, file-exists-p raises the error to be ;; catched by the search function that displays the error message. ((file-exists-p file) (find-file-noselect file)) (t (current-buffer))))) (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:]_]\\|[-_[:alnum:]]*[[:alpha:]][-_[:alnum:]]*\\)[ \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) (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 (if add-log-current-defun-function (funcall add-log-current-defun-function) ;; 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 "]")))))) (autoload 'timezone-make-date-sortable "timezone") (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." (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)) (ignore-errors (timezone-make-date-sortable date))))) (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) ;;; add-log.el ends here