574 lines
21 KiB
EmacsLisp
574 lines
21 KiB
EmacsLisp
;;; ============ NOTE WELL! =============
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;;;
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;;; You only need to use this file if you're using a version of Emacs
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;;; prior to 20.1 to work on GDB. The only difference between this
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;;; and the standard add-log.el provided with 19.34 is that it
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;;; generates dates using the terser format used by Emacs 20. This is
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;;; the format recommended for use in GDB ChangeLogs.
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;;;
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;;; To use this code, you should create a directory `~/elisp', save the code
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;;; below in `~/elisp/add-log.el', and then put something like this in
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;;; your `~/.emacs' file, to tell Emacs where to find it:
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;;;
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;;; (setq load-path
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;;; (cons (expand-file-name "~/elisp")
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;;; load-path))
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;;;
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;;; If you want, you can also byte-compile it --- it'll run a little
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;;; faster, and use a little less memory. (Not that those matter much for
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;;; this file.) To do that, after you've saved the text as
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;;; ~/elisp/add-log.el, bring it up in Emacs, and type
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;;;
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;;; C-u M-x byte-compile-file
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;;;
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;;; --- Jim Blandy
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;;; add-log.el --- change log maintenance commands for Emacs
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;; Copyright (C) 1985-2021 Free Software Foundation, Inc.
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;; Keywords: maint
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program; if not, write to the Free Software
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;; Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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;; MA 02110-1301, USA.
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;;; Commentary:
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;; This facility is documented in the Emacs Manual.
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;;; Code:
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(defvar change-log-default-name nil
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"*Name of a change log file for \\[add-change-log-entry].")
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(defvar add-log-current-defun-function nil
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"\
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*If non-nil, function to guess name of current function from surrounding text.
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\\[add-change-log-entry] calls this function (if nil, `add-log-current-defun'
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instead) with no arguments. It returns a string or nil if it cannot guess.")
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;;;###autoload
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(defvar add-log-full-name nil
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"*Full name of user, for inclusion in ChangeLog daily headers.
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This defaults to the value returned by the `user-full-name' function.")
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;;;###autoload
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(defvar add-log-mailing-address nil
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"*Electronic mail address of user, for inclusion in ChangeLog daily headers.
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This defaults to the value of `user-mail-address'.")
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(defvar change-log-font-lock-keywords
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'(("^[SMTWF].+" . font-lock-function-name-face) ; Date line.
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("^\t\\* \\([^ :\n]+\\)" 1 font-lock-comment-face) ; File name.
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("(\\([^)\n]+\\)):" 1 font-lock-keyword-face)) ; Function name.
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"Additional expressions to highlight in Change Log mode.")
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(defvar change-log-mode-map nil
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"Keymap for Change Log major mode.")
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(if change-log-mode-map
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nil
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(setq change-log-mode-map (make-sparse-keymap))
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(define-key change-log-mode-map "\M-q" 'change-log-fill-paragraph))
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(defun change-log-name ()
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(or change-log-default-name
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(if (eq system-type 'vax-vms)
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"$CHANGE_LOG$.TXT"
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(if (or (eq system-type 'ms-dos) (eq system-type 'windows-nt))
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"changelo"
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"ChangeLog"))))
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;;;###autoload
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(defun prompt-for-change-log-name ()
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"Prompt for a change log name."
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(let* ((default (change-log-name))
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(name (expand-file-name
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(read-file-name (format "Log file (default %s): " default)
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nil default))))
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;; Handle something that is syntactically a directory name.
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;; Look for ChangeLog or whatever in that directory.
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(if (string= (file-name-nondirectory name) "")
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(expand-file-name (file-name-nondirectory default)
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name)
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;; Handle specifying a file that is a directory.
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(if (file-directory-p name)
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(expand-file-name (file-name-nondirectory default)
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(file-name-as-directory name))
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name))))
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;;;###autoload
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(defun find-change-log (&optional file-name)
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"Find a change log file for \\[add-change-log-entry] and return the name.
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Optional arg FILE-NAME specifies the file to use.
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If FILE-NAME is nil, use the value of `change-log-default-name'.
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If 'change-log-default-name' is nil, behave as though it were 'ChangeLog'
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\(or whatever we use on this operating system).
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If 'change-log-default-name' contains a leading directory component, then
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simply find it in the current directory. Otherwise, search in the current
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directory and its successive parents for a file so named.
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Once a file is found, `change-log-default-name' is set locally in the
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current buffer to the complete file name."
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;; If user specified a file name or if this buffer knows which one to use,
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;; just use that.
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(or file-name
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(setq file-name (and change-log-default-name
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(file-name-directory change-log-default-name)
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change-log-default-name))
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(progn
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;; Chase links in the source file
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;; and use the change log in the dir where it points.
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(setq file-name (or (and buffer-file-name
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(file-name-directory
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(file-chase-links buffer-file-name)))
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default-directory))
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(if (file-directory-p file-name)
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(setq file-name (expand-file-name (change-log-name) file-name)))
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;; Chase links before visiting the file.
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;; This makes it easier to use a single change log file
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;; for several related directories.
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(setq file-name (file-chase-links file-name))
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(setq file-name (expand-file-name file-name))
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;; Move up in the dir hierarchy till we find a change log file.
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(let ((file1 file-name)
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parent-dir)
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(while (and (not (or (get-file-buffer file1) (file-exists-p file1)))
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(progn (setq parent-dir
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(file-name-directory
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(directory-file-name
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(file-name-directory file1))))
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;; Give up if we are already at the root dir.
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(not (string= (file-name-directory file1)
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parent-dir))))
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;; Move up to the parent dir and try again.
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(setq file1 (expand-file-name
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(file-name-nondirectory (change-log-name))
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parent-dir)))
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;; If we found a change log in a parent, use that.
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(if (or (get-file-buffer file1) (file-exists-p file1))
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(setq file-name file1)))))
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;; Make a local variable in this buffer so we needn't search again.
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(set (make-local-variable 'change-log-default-name) file-name)
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file-name)
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;;;###autoload
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(defun add-change-log-entry (&optional whoami file-name other-window new-entry)
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"Find change log file and add an entry for today.
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Optional arg (interactive prefix) non-nil means prompt for user name and site.
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Second arg is file name of change log. If nil, uses `change-log-default-name'.
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Third arg OTHER-WINDOW non-nil means visit in other window.
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Fourth arg NEW-ENTRY non-nil means always create a new entry at the front;
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never append to an existing entry."
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(interactive (list current-prefix-arg
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(prompt-for-change-log-name)))
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(or add-log-full-name
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(setq add-log-full-name (user-full-name)))
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(or add-log-mailing-address
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(setq add-log-mailing-address user-mail-address))
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(if whoami
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(progn
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(setq add-log-full-name (read-input "Full name: " add-log-full-name))
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;; Note that some sites have room and phone number fields in
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;; full name which look silly when inserted. Rather than do
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;; anything about that here, let user give prefix argument so that
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;; s/he can edit the full name field in prompter if s/he wants.
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(setq add-log-mailing-address
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(read-input "Mailing address: " add-log-mailing-address))))
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(let ((defun (funcall (or add-log-current-defun-function
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'add-log-current-defun)))
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paragraph-end entry)
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(setq file-name (expand-file-name (find-change-log file-name)))
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;; Set ENTRY to the file name to use in the new entry.
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(and buffer-file-name
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;; Never want to add a change log entry for the ChangeLog file itself.
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(not (string= buffer-file-name file-name))
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(setq entry (if (string-match
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(concat "^" (regexp-quote (file-name-directory
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file-name)))
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buffer-file-name)
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(substring buffer-file-name (match-end 0))
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(file-name-nondirectory buffer-file-name))))
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(if (and other-window (not (equal file-name buffer-file-name)))
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(find-file-other-window file-name)
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(find-file file-name))
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(or (eq major-mode 'change-log-mode)
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(change-log-mode))
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(undo-boundary)
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(goto-char (point-min))
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(let ((heading (format "%s %s <%s>"
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(format-time-string "%Y-%m-%d")
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add-log-full-name
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add-log-mailing-address)))
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(if (looking-at (regexp-quote heading))
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(forward-line 1)
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(insert heading "\n\n")))
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;; Search only within the first paragraph.
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(if (looking-at "\n*[^\n* \t]")
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(skip-chars-forward "\n")
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(forward-paragraph 1))
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(setq paragraph-end (point))
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(goto-char (point-min))
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;; Now insert the new line for this entry.
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(cond ((re-search-forward "^\\s *\\*\\s *$" paragraph-end t)
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;; Put this file name into the existing empty entry.
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(if entry
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(insert entry)))
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((and (not new-entry)
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(let (case-fold-search)
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(re-search-forward
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(concat (regexp-quote (concat "* " entry))
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;; Don't accept `foo.bar' when
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;; looking for `foo':
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"\\(\\s \\|[(),:]\\)")
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paragraph-end t)))
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;; Add to the existing entry for the same file.
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(re-search-forward "^\\s *$\\|^\\s \\*")
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(goto-char (match-beginning 0))
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;; Delete excess empty lines; make just 2.
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(while (and (not (eobp)) (looking-at "^\\s *$"))
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(delete-region (point) (save-excursion (forward-line 1) (point))))
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(insert "\n\n")
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(forward-line -2)
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(indent-relative-maybe))
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(t
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;; Make a new entry.
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(forward-line 1)
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(while (looking-at "\\sW")
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(forward-line 1))
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(while (and (not (eobp)) (looking-at "^\\s *$"))
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(delete-region (point) (save-excursion (forward-line 1) (point))))
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(insert "\n\n\n")
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(forward-line -2)
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(indent-to left-margin)
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(insert "* " (or entry ""))))
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;; Now insert the function name, if we have one.
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;; Point is at the entry for this file,
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;; either at the end of the line or at the first blank line.
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(if defun
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(progn
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;; Make it easy to get rid of the function name.
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(undo-boundary)
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(insert (if (save-excursion
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(beginning-of-line 1)
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(looking-at "\\s *$"))
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""
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" ")
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"(" defun "): "))
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;; No function name, so put in a colon unless we have just a star.
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(if (not (save-excursion
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(beginning-of-line 1)
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(looking-at "\\s *\\(\\*\\s *\\)?$")))
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(insert ": ")))))
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;;;###autoload
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(defun add-change-log-entry-other-window (&optional whoami file-name)
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"Find change log file in other window and add an entry for today.
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Optional arg (interactive prefix) non-nil means prompt for user name and site.
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Second arg is file name of change log. \
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If nil, uses `change-log-default-name'."
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(interactive (if current-prefix-arg
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(list current-prefix-arg
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(prompt-for-change-log-name))))
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(add-change-log-entry whoami file-name t))
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;;;###autoload (define-key ctl-x-4-map "a" 'add-change-log-entry-other-window)
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;;;###autoload
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(defun change-log-mode ()
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"Major mode for editing change logs; like Indented Text Mode.
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Prevents numeric backups and sets `left-margin' to 8 and `fill-column' to 74.
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New log entries are usually made with \\[add-change-log-entry] or \\[add-change-log-entry-other-window].
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Each entry behaves as a paragraph, and the entries for one day as a page.
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Runs `change-log-mode-hook'."
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(interactive)
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(kill-all-local-variables)
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(indented-text-mode)
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(setq major-mode 'change-log-mode
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mode-name "Change Log"
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left-margin 8
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fill-column 74
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indent-tabs-mode t
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tab-width 8)
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(use-local-map change-log-mode-map)
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;; Let each entry behave as one paragraph:
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;; We really do want "^" in paragraph-start below: it is only the lines that
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;; begin at column 0 (despite the left-margin of 8) that we are looking for.
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(set (make-local-variable 'paragraph-start) "\\s *$\\|\f\\|^\\sw")
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(set (make-local-variable 'paragraph-separate) "\\s *$\\|\f\\|^\\sw")
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;; Let all entries for one day behave as one page.
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;; Match null string on the date-line so that the date-line
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;; is grouped with what follows.
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(set (make-local-variable 'page-delimiter) "^\\<\\|^\f")
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(set (make-local-variable 'version-control) 'never)
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(set (make-local-variable 'adaptive-fill-regexp) "\\s *")
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(set (make-local-variable 'font-lock-defaults)
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'(change-log-font-lock-keywords t))
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(run-hooks 'change-log-mode-hook))
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;; It might be nice to have a general feature to replace this. The idea I
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;; have is a variable giving a regexp matching text which should not be
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;; moved from bol by filling. change-log-mode would set this to "^\\s *\\s(".
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;; But I don't feel up to implementing that today.
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(defun change-log-fill-paragraph (&optional justify)
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"Fill the paragraph, but preserve open parentheses at beginning of lines.
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Prefix arg means justify as well."
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(interactive "P")
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(let ((end (save-excursion (forward-paragraph) (point)))
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(beg (save-excursion (backward-paragraph)(point)))
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(paragraph-start (concat paragraph-start "\\|\\s *\\s(")))
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(fill-region beg end justify)))
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(defvar add-log-current-defun-header-regexp
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"^\\([A-Z][A-Z_ ]*[A-Z_]\\|[-_a-zA-Z]+\\)[ \t]*[:=]"
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"*Heuristic regexp used by `add-log-current-defun' for unknown major modes.")
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;;;###autoload
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(defun add-log-current-defun ()
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"Return name of function definition point is in, or nil.
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Understands C, Lisp, LaTeX (\"functions\" are chapters, sections, ...),
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Texinfo (@node titles), Perl, and Fortran.
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Other modes are handled by a heuristic that looks in the 10K before
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point for uppercase headings starting in the first column or
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identifiers followed by `:' or `=', see variable
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`add-log-current-defun-header-regexp'.
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Has a preference of looking backwards."
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(condition-case nil
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(save-excursion
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(let ((location (point)))
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(cond ((memq major-mode '(emacs-lisp-mode lisp-mode scheme-mode
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lisp-interaction-mode))
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;; If we are now precisely at the beginning of a defun,
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;; make sure beginning-of-defun finds that one
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;; rather than the previous one.
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(or (eobp) (forward-char 1))
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(beginning-of-defun)
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;; Make sure we are really inside the defun found, not after it.
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(if (and (looking-at "\\s(")
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(progn (end-of-defun)
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(< location (point)))
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(progn (forward-sexp -1)
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(>= location (point))))
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(progn
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(if (looking-at "\\s(")
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(forward-char 1))
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(forward-sexp 1)
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(skip-chars-forward " '")
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(buffer-substring (point)
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(progn (forward-sexp 1) (point))))))
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((and (memq major-mode '(c-mode c++-mode c++-c-mode objc-mode))
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(save-excursion (beginning-of-line)
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;; Use eq instead of = here to avoid
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;; error when at bob and char-after
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;; returns nil.
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(while (eq (char-after (- (point) 2)) ?\\)
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(forward-line -1))
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(looking-at "[ \t]*#[ \t]*define[ \t]")))
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;; Handle a C macro definition.
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(beginning-of-line)
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(while (eq (char-after (- (point) 2)) ?\\) ;not =; note above
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(forward-line -1))
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(search-forward "define")
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(skip-chars-forward " \t")
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(buffer-substring (point)
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(progn (forward-sexp 1) (point))))
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((memq major-mode '(c-mode c++-mode c++-c-mode objc-mode))
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(beginning-of-line)
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;; See if we are in the beginning part of a function,
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;; before the open brace. If so, advance forward.
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(while (not (looking-at "{\\|\\(\\s *$\\)"))
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(forward-line 1))
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(or (eobp)
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(forward-char 1))
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(beginning-of-defun)
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(if (progn (end-of-defun)
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(< location (point)))
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(progn
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(backward-sexp 1)
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(let (beg tem)
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(forward-line -1)
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;; Skip back over typedefs of arglist.
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(while (and (not (bobp))
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(looking-at "[ \t\n]"))
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(forward-line -1))
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;; See if this is using the DEFUN macro used in Emacs,
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;; or the DEFUN macro used by the C library.
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(if (condition-case nil
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(and (save-excursion
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(end-of-line)
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(while (= (preceding-char) ?\\)
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(end-of-line 2))
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(backward-sexp 1)
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(beginning-of-line)
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(setq tem (point))
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(looking-at "DEFUN\\b"))
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(>= location tem))
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(error nil))
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(progn
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(goto-char tem)
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(down-list 1)
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(if (= (char-after (point)) ?\")
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(progn
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(forward-sexp 1)
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(skip-chars-forward " ,")))
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(buffer-substring (point)
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(progn (forward-sexp 1) (point))))
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(if (looking-at "^[+-]")
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(get-method-definition)
|
||
;; Ordinary C function syntax.
|
||
(setq beg (point))
|
||
(if (and (condition-case nil
|
||
;; Protect against "Unbalanced parens" error.
|
||
(progn
|
||
(down-list 1) ; into arglist
|
||
(backward-up-list 1)
|
||
(skip-chars-backward " \t")
|
||
t)
|
||
(error nil))
|
||
;; Verify initial pos was after
|
||
;; real start of function.
|
||
(save-excursion
|
||
(goto-char beg)
|
||
;; For this purpose, include the line
|
||
;; that has the decl keywords. This
|
||
;; may also include some of the
|
||
;; comments before the function.
|
||
(while (and (not (bobp))
|
||
(save-excursion
|
||
(forward-line -1)
|
||
(looking-at "[^\n\f]")))
|
||
(forward-line -1))
|
||
(>= location (point)))
|
||
;; Consistency check: going down and up
|
||
;; shouldn't take us back before BEG.
|
||
(> (point) beg))
|
||
(let (end middle)
|
||
;; Don't include any final newline
|
||
;; in the name we use.
|
||
(if (= (preceding-char) ?\n)
|
||
(forward-char -1))
|
||
(setq end (point))
|
||
(backward-sexp 1)
|
||
;; Now find the right beginning of the name.
|
||
;; Include certain keywords if they
|
||
;; precede the name.
|
||
(setq middle (point))
|
||
(forward-word -1)
|
||
;; Ignore these subparts of a class decl
|
||
;; and move back to the class name itself.
|
||
(while (looking-at "public \\|private ")
|
||
(skip-chars-backward " \t:")
|
||
(setq end (point))
|
||
(backward-sexp 1)
|
||
(setq middle (point))
|
||
(forward-word -1))
|
||
(and (bolp)
|
||
(looking-at "struct \\|union \\|class ")
|
||
(setq middle (point)))
|
||
(buffer-substring middle end)))))))))
|
||
((memq major-mode
|
||
'(TeX-mode plain-TeX-mode LaTeX-mode;; tex-mode.el
|
||
plain-tex-mode latex-mode;; cmutex.el
|
||
))
|
||
(if (re-search-backward
|
||
"\\\\\\(sub\\)*\\(section\\|paragraph\\|chapter\\)" nil t)
|
||
(progn
|
||
(goto-char (match-beginning 0))
|
||
(buffer-substring (1+ (point));; without initial backslash
|
||
(progn
|
||
(end-of-line)
|
||
(point))))))
|
||
((eq major-mode 'texinfo-mode)
|
||
(if (re-search-backward "^@node[ \t]+\\([^,\n]+\\)" nil t)
|
||
(buffer-substring (match-beginning 1)
|
||
(match-end 1))))
|
||
((eq major-mode 'perl-mode)
|
||
(if (re-search-backward "^sub[ \t]+\\([^ \t\n]+\\)" nil t)
|
||
(buffer-substring (match-beginning 1)
|
||
(match-end 1))))
|
||
((eq major-mode 'fortran-mode)
|
||
;; must be inside function body for this to work
|
||
(beginning-of-fortran-subprogram)
|
||
(let ((case-fold-search t)) ; case-insensitive
|
||
;; search for fortran subprogram start
|
||
(if (re-search-forward
|
||
"^[ \t]*\\(program\\|subroutine\\|function\
|
||
\\|[ \ta-z0-9*]*[ \t]+function\\)"
|
||
nil t)
|
||
(progn
|
||
;; move to EOL or before first left paren
|
||
(if (re-search-forward "[(\n]" nil t)
|
||
(progn (forward-char -1)
|
||
(skip-chars-backward " \t"))
|
||
(end-of-line))
|
||
;; Use the name preceding that.
|
||
(buffer-substring (point)
|
||
(progn (forward-sexp -1)
|
||
(point)))))))
|
||
(t
|
||
;; If all else fails, try heuristics
|
||
(let (case-fold-search)
|
||
(end-of-line)
|
||
(if (re-search-backward add-log-current-defun-header-regexp
|
||
(- (point) 10000)
|
||
t)
|
||
(buffer-substring (match-beginning 1)
|
||
(match-end 1))))))))
|
||
(error nil)))
|
||
|
||
(defvar get-method-definition-md)
|
||
|
||
;; Subroutine used within 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 get-method-definition-1 (end)
|
||
(setq get-method-definition-md
|
||
(concat get-method-definition-md
|
||
(buffer-substring (match-beginning 1) (match-end 1))
|
||
end))
|
||
(goto-char (match-end 0)))
|
||
|
||
;; For objective C, return the method name if we are in a method.
|
||
(defun get-method-definition ()
|
||
(let ((get-method-definition-md "["))
|
||
(save-excursion
|
||
(if (re-search-backward "^@implementation\\s-*\\([A-Za-z_]*\\)" nil t)
|
||
(get-method-definition-1 " ")))
|
||
(save-excursion
|
||
(cond
|
||
((re-search-forward "^\\([-+]\\)[ \t\n\f\r]*\\(([^)]*)\\)?\\s-*" nil t)
|
||
(get-method-definition-1 "")
|
||
(while (not (looking-at "[{;]"))
|
||
(looking-at
|
||
"\\([A-Za-z_]*:?\\)\\s-*\\(([^)]*)\\)?[A-Za-z_]*[ \t\n\f\r]*")
|
||
(get-method-definition-1 ""))
|
||
(concat get-method-definition-md "]"))))))
|
||
|
||
|
||
(provide 'add-log)
|
||
|
||
;;; add-log.el ends here
|