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Annotation of GNUtools/emacs/lisp/rmailedit.el, revision 1.1

1.1     ! root        1: ;; "RMAIL edit mode"  Edit the current message.
        !             2: ;; Copyright (C) 1985 Free Software Foundation, Inc.
        !             3: 
        !             4: ;; This file is part of GNU Emacs.
        !             5: 
        !             6: ;; GNU Emacs is free software; you can redistribute it and/or modify
        !             7: ;; it under the terms of the GNU General Public License as published by
        !             8: ;; the Free Software Foundation; either version 1, or (at your option)
        !             9: ;; any later version.
        !            10: 
        !            11: ;; GNU Emacs is distributed in the hope that it will be useful,
        !            12: ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: ;; GNU General Public License for more details.
        !            15: 
        !            16: ;; You should have received a copy of the GNU General Public License
        !            17: ;; along with GNU Emacs; see the file COPYING.  If not, write to
        !            18: ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
        !            19: 
        !            20: 
        !            21: (require 'rmail)
        !            22: 
        !            23: (defvar rmail-edit-map nil)
        !            24: (if rmail-edit-map
        !            25:     nil
        !            26:   (setq rmail-edit-map (copy-keymap text-mode-map))
        !            27:   (define-key rmail-edit-map "\C-c\C-c" 'rmail-cease-edit)
        !            28:   (define-key rmail-edit-map "\C-c\C-]" 'rmail-abort-edit))
        !            29: 
        !            30: ;; Rmail Edit mode is suitable only for specially formatted data.
        !            31: (put 'rmail-edit-mode 'mode-class 'special)
        !            32: 
        !            33: (defun rmail-edit-mode ()
        !            34:   "Major mode for editing the contents of an RMAIL message.
        !            35: The editing commands are the same as in Text mode, together with two commands
        !            36: to return to regular RMAIL:
        !            37:   *  rmail-abort-edit cancels the changes
        !            38:      you have made and returns to RMAIL
        !            39:   *  rmail-cease-edit makes them permanent.
        !            40: \\{rmail-edit-map}"
        !            41:   (use-local-map rmail-edit-map)
        !            42:   (setq major-mode 'rmail-edit-mode)
        !            43:   (setq mode-name "RMAIL Edit")
        !            44:   (if (boundp 'mode-line-modified)
        !            45:       (setq mode-line-modified (default-value 'mode-line-modified))
        !            46:     (setq mode-line-format (default-value 'mode-line-format)))
        !            47:   (run-hooks 'text-mode-hook 'rmail-edit-mode-hook))
        !            48: 
        !            49: (defun rmail-edit-current-message ()
        !            50:   "Edit the contents of this message."
        !            51:   (interactive)
        !            52:   (rmail-edit-mode)
        !            53:   (make-local-variable 'rmail-old-text)
        !            54:   (setq rmail-old-text (buffer-substring (point-min) (point-max)))
        !            55:   (setq buffer-read-only nil)
        !            56:   (set-buffer-modified-p (buffer-modified-p))
        !            57:   ;; Make mode line update.
        !            58:   (if (and (eq (key-binding "\C-c\C-c") 'rmail-cease-edit)
        !            59:           (eq (key-binding "\C-c\C-]") 'rmail-abort-edit))
        !            60:       (message "Editing: Type C-c C-c to return to Rmail, C-c C-] to abort")
        !            61:     (message (substitute-command-keys
        !            62:               "Editing: Type \\[rmail-cease-edit] to return to Rmail, \\[rmail-abort-edit] to abort"))))
        !            63: 
        !            64: (defun rmail-cease-edit ()
        !            65:   "Finish editing message; switch back to Rmail proper."
        !            66:   (interactive)
        !            67:   ;; Make sure buffer ends with a newline.
        !            68:   (save-excursion
        !            69:     (goto-char (point-max))
        !            70:     (if (/= (preceding-char) ?\n)
        !            71:        (insert "\n"))
        !            72:     ;; Adjust the marker that points to the end of this message.
        !            73:     (set-marker (aref rmail-message-vector (1+ rmail-current-message))
        !            74:                (point)))
        !            75:   (let ((old rmail-old-text))
        !            76:     ;; Update the mode line.
        !            77:     (set-buffer-modified-p (buffer-modified-p))
        !            78:     (rmail-mode-1)
        !            79:     (if (and (= (length old) (- (point-max) (point-min)))
        !            80:             (string= old (buffer-substring (point-min) (point-max))))
        !            81:        ()
        !            82:       (setq old nil)
        !            83:       (rmail-set-attribute "edited" t)
        !            84:       (if (boundp 'rmail-summary-vector)
        !            85:          (progn
        !            86:            (aset rmail-summary-vector (1- rmail-current-message) nil)
        !            87:            (save-excursion
        !            88:              (rmail-widen-to-current-msgbeg
        !            89:                (function (lambda ()
        !            90:                            (forward-line 2)
        !            91:                            (if (looking-at "Summary-line: ")
        !            92:                                (let ((buffer-read-only nil))
        !            93:                                  (delete-region (point)
        !            94:                                                 (progn (forward-line 1)
        !            95:                                                        (point))))))))
        !            96:              (rmail-show-message))))))
        !            97:   (setq buffer-read-only t))
        !            98: 
        !            99: (defun rmail-abort-edit ()
        !           100:   "Abort edit of current message; restore original contents."
        !           101:   (interactive)
        !           102:   (delete-region (point-min) (point-max))
        !           103:   (insert rmail-old-text)
        !           104:   (rmail-cease-edit))
        !           105: 

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