;;; undigest.el --- digest-cracking support for the RMAIL mail reader
-;; Copyright (C) 1985, 1986, 1994 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1986, 1994, 1996 Free Software Foundation, Inc.
;; Maintainer: FSF
;; Keywords: mail
(require 'rmail)
+(defcustom rmail-digest-end-regexps
+ (list (concat "End of.*Digest.*\n"
+ (regexp-quote "*********") "*"
+ "\\(\n------*\\)*")
+ (concat "End of.*\n"
+ (regexp-quote "*") "*"))
+ "*Regexps matching the end of a digest message."
+ :group 'rmail
+ :type '(repeat regexp))
+
+;;;###autoload
(defun undigestify-rmail-message ()
"Break up a digest message into its constituent messages.
Leaves original message, deleted, before the undigestified messages."
(interactive)
- (widen)
- (let ((buffer-read-only nil)
- (msg-string (buffer-substring (rmail-msgbeg rmail-current-message)
- (rmail-msgend rmail-current-message))))
- (goto-char (rmail-msgend rmail-current-message))
- (narrow-to-region (point) (point))
- (insert msg-string)
- (narrow-to-region (point-min) (1- (point-max))))
- (let ((error t)
- (buffer-read-only nil))
- (unwind-protect
- (progn
- (save-restriction
- (goto-char (point-min))
- (delete-region (point-min)
- (progn (search-forward "\n*** EOOH ***\n")
- (point)))
- (insert "\^_\^L\n0, unseen,,\n*** EOOH ***\n")
- (narrow-to-region (point)
- (point-max))
- (let* ((fill-prefix "")
- (case-fold-search t)
- start
- (digest-name
- (mail-strip-quoted-names
- (or (save-restriction
- (search-forward "\n\n")
- (setq start (point))
- (narrow-to-region (point-min) (point))
- (goto-char (point-max))
- (or (mail-fetch-field "Reply-To")
- (mail-fetch-field "To")
- (mail-fetch-field "Apparently-To")
- (mail-fetch-field "From")))
- (error "Message is not a digest--bad header")))))
- (save-excursion
- (goto-char (point-max))
- (skip-chars-backward " \t\n")
- (let (found)
- ;; compensate for broken un*x digestifiers. Sigh Sigh.
- (while (and (> (point) start) (not found))
- (forward-line -1)
- (if (looking-at (concat "End of.*Digest.*\n"
- (regexp-quote "*********") "*"
- "\\(\n------*\\)*"))
- (setq found t)))
- (if (not found)
+ (with-current-buffer rmail-buffer
+ (widen)
+ (let ((buffer-read-only nil)
+ (msg-string (buffer-substring (rmail-msgbeg rmail-current-message)
+ (rmail-msgend rmail-current-message))))
+ (goto-char (rmail-msgend rmail-current-message))
+ (narrow-to-region (point) (point))
+ (insert msg-string)
+ (narrow-to-region (point-min) (1- (point-max))))
+ (let ((error t)
+ (buffer-read-only nil))
+ (unwind-protect
+ (progn
+ (save-restriction
+ (goto-char (point-min))
+ (delete-region (point-min)
+ (progn (search-forward "\n*** EOOH ***\n")
+ (point)))
+ (insert "\^_\^L\n0, unseen,,\n*** EOOH ***\n")
+ (narrow-to-region (point)
+ (point-max))
+ (let* ((fill-prefix "")
+ (case-fold-search t)
+ start
+ (digest-name
+ (mail-strip-quoted-names
+ (or (save-restriction
+ (search-forward "\n\n")
+ (setq start (point))
+ (narrow-to-region (point-min) (point))
+ (goto-char (point-max))
+ (or (mail-fetch-field "Reply-To")
+ (mail-fetch-field "To")
+ (mail-fetch-field "Apparently-To")
+ (mail-fetch-field "From")))
+ (error "Message is not a digest--bad header")))))
+ (save-excursion
+ (let (found
+ (regexps rmail-digest-end-regexps))
+ (while (and regexps (not found))
+ (goto-char (point-max))
+ (skip-chars-backward " \t\n")
+ ;; compensate for broken un*x digestifiers. Sigh Sigh.
+ (while (and (> (point) start) (not found))
+ (forward-line -1)
+ (if (looking-at (car regexps))
+ (setq found t))
+ (setq regexps (cdr regexps))))
+ (unless found
(error "Message is not a digest--no end line"))))
- (re-search-forward (concat "^" (make-string 55 ?-) "-*\n*"))
- (replace-match "\^_\^L\n0, unseen,,\n*** EOOH ***\n")
- (save-restriction
- (narrow-to-region (point)
- (progn (search-forward "\n\n")
- (point)))
- (if (mail-fetch-field "To") nil
- (goto-char (point-min))
- (insert "To: " digest-name "\n")))
- (while (re-search-forward
- (concat "\n\n" (make-string 27 ?-) "-*\n*")
- nil t)
- (replace-match "\n\n\^_\^L\n0, unseen,,\n*** EOOH ***\n")
+ (re-search-forward (concat "^" (make-string 55 ?-) "-*\n*"))
+ (replace-match "\^_\^L\n0, unseen,,\n*** EOOH ***\n")
(save-restriction
- (if (looking-at "End ")
- (insert "To: " digest-name "\n\n")
- (narrow-to-region (point)
- (progn (search-forward "\n\n"
- nil 'move)
- (point))))
- (if (mail-fetch-field "To")
- nil
+ (narrow-to-region (point)
+ (progn (search-forward "\n\n")
+ (point)))
+ (if (mail-fetch-field "To") nil
(goto-char (point-min))
(insert "To: " digest-name "\n")))
- ;; Digestifiers may insert `- ' on lines that start with `-'.
- ;; Undo that.
- (save-excursion
- (goto-char (point-min))
- (if (re-search-forward
- "\n\n----------------------------*\n*"
- nil t)
- (let ((end (point-marker)))
- (goto-char (point-min))
- (while (re-search-forward "^- " end t)
- (delete-char -2)))))
- )))
- (setq error nil)
- (message "Message successfully undigestified")
- (let ((n rmail-current-message))
- (rmail-forget-messages)
- (rmail-show-message n)
- (rmail-delete-forward)
- (if (rmail-summary-exists)
- (rmail-select-summary
- (rmail-update-summary)))))
- (cond (error
- (narrow-to-region (point-min) (1+ (point-max)))
- (delete-region (point-min) (point-max))
- (rmail-show-message rmail-current-message))))))
+ (while (re-search-forward
+ (concat "\n\n" (make-string 27 ?-) "-*\n*")
+ nil t)
+ (replace-match "\n\n\^_\^L\n0, unseen,,\n*** EOOH ***\n")
+ (save-restriction
+ (if (looking-at "End ")
+ (insert "To: " digest-name "\n\n")
+ (narrow-to-region (point)
+ (progn (search-forward "\n\n"
+ nil 'move)
+ (point))))
+ (if (mail-fetch-field "To")
+ nil
+ (goto-char (point-min))
+ (insert "To: " digest-name "\n")))
+ ;; Digestifiers may insert `- ' on lines that start with `-'.
+ ;; Undo that.
+ (save-excursion
+ (goto-char (point-min))
+ (if (re-search-forward
+ "\n\n----------------------------*\n*"
+ nil t)
+ (let ((end (point-marker)))
+ (goto-char (point-min))
+ (while (re-search-forward "^- " end t)
+ (delete-char -2)))))
+ )))
+ (setq error nil)
+ (message "Message successfully undigestified")
+ (let ((n rmail-current-message))
+ (rmail-forget-messages)
+ (rmail-show-message n)
+ (rmail-delete-forward)
+ (if (rmail-summary-exists)
+ (rmail-select-summary
+ (rmail-update-summary)))))
+ (cond (error
+ (narrow-to-region (point-min) (1+ (point-max)))
+ (delete-region (point-min) (point-max))
+ (rmail-show-message rmail-current-message)))))))
+
+;;;###autoload
+(defun unforward-rmail-message ()
+ "Extract a forwarded message from the containing message.
+This puts the forwarded message into a separate rmail message
+following the containing message."
+ (interactive)
+ ;; If we are in a summary buffer, switch to the Rmail buffer.
+ (with-current-buffer rmail-buffer
+ (narrow-to-region (rmail-msgbeg rmail-current-message)
+ (rmail-msgend rmail-current-message))
+ (goto-char (point-min))
+ (let (beg end (buffer-read-only nil) msg-string who-forwarded-it)
+ (setq who-forwarded-it (mail-fetch-field "From"))
+ (if (re-search-forward "^----" nil t)
+ nil
+ (error "No forwarded message"))
+ (forward-line 1)
+ (setq beg (point))
+ (if (re-search-forward "^----" nil t)
+ (setq end (match-beginning 0))
+ (error "No terminator for forwarded message"))
+ (widen)
+ (setq msg-string (buffer-substring beg end))
+ (goto-char (rmail-msgend rmail-current-message))
+ (narrow-to-region (point) (point))
+ (insert "\^_\^L\n0, unseen,,\n*** EOOH ***\n")
+ (narrow-to-region (point) (point))
+ (insert "Forwarded-by: " who-forwarded-it "\n")
+ (insert msg-string)
+ (goto-char (point-min))
+ (while (not (eobp))
+ (if (looking-at "- ")
+ (delete-region (point) (+ 2 (point))))
+ (forward-line 1))
+ (let ((n rmail-current-message))
+ (rmail-forget-messages)
+ (rmail-show-message n)
+ (if (rmail-summary-exists)
+ (rmail-select-summary
+ (rmail-update-summary)))))))
+
+(provide 'undigest)
;;; undigest.el ends here