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115 lines
3.8 KiB
EmacsLisp
115 lines
3.8 KiB
EmacsLisp
;;; undigest.el --- digest-cracking support for the RMAIL mail reader
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;; Copyright (C) 1985, 1986 Free Software Foundation, Inc.
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;; Maintainer: FSF
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;; Keywords: mail
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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 GNU Emacs; see the file COPYING. If not, write to
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;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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;;; Commentary:
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;; See Internet RFC 934
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;;; Code:
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(defun undigestify-rmail-message ()
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"Break up a digest message into its constituent messages.
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Leaves original message, deleted, before the undigestified messages."
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(interactive)
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(widen)
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(let ((buffer-read-only nil)
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(msg-string (buffer-substring (rmail-msgbeg rmail-current-message)
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(rmail-msgend rmail-current-message))))
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(goto-char (rmail-msgend rmail-current-message))
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(narrow-to-region (point) (point))
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(insert msg-string)
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(narrow-to-region (point-min) (1- (point-max))))
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(let ((error t)
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(buffer-read-only nil))
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(unwind-protect
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(progn
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(save-restriction
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(goto-char (point-min))
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(delete-region (point-min)
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(progn (search-forward "\n*** EOOH ***\n")
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(point)))
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(insert "\^_\^L\n0, unseen,,\n*** EOOH ***\n")
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(narrow-to-region (point)
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(point-max))
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(let* ((fill-prefix "")
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(case-fold-search t)
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(digest-name
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(mail-strip-quoted-names
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(or (save-restriction
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(search-forward "\n\n")
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(narrow-to-region (point-min) (point))
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(goto-char (point-max))
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(or (mail-fetch-field "Reply-To")
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(mail-fetch-field "To")
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(mail-fetch-field "Apparently-To")
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(mail-fetch-field "From")))
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(error "Message is not a digest")))))
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(save-excursion
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(goto-char (point-max))
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(skip-chars-backward " \t\n")
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(let ((count 10) found)
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;; compensate for broken un*x digestifiers. Sigh Sigh.
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(while (and (> count 0) (not found))
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(forward-line -1)
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(setq count (1- count))
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(if (looking-at (concat "End of.*Digest.*\n"
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(regexp-quote "*********") "*"
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"\\(\n------*\\)*"))
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(setq found t)))
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(if (not found) (error "Message is not a digest"))))
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(re-search-forward (concat "^" (make-string 55 ?-) "-*\n*"))
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(replace-match "\^_\^L\n0, unseen,,\n*** EOOH ***\n")
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(save-restriction
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(narrow-to-region (point)
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(progn (search-forward "\n\n")
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(point)))
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(if (mail-fetch-field "To") nil
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(goto-char (point-min))
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(insert "To: " digest-name "\n")))
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(while (re-search-forward
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(concat "\n\n" (make-string 27 ?-) "-*\n*")
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nil t)
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(replace-match "\n\n\^_\^L\n0, unseen,,\n*** EOOH ***\n")
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(save-restriction
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(if (looking-at "End ")
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(insert "To: " digest-name "\n\n")
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(narrow-to-region (point)
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(progn (search-forward "\n\n"
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nil 'move)
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(point))))
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(if (mail-fetch-field "To") nil
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(goto-char (point-min))
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(insert "To: " digest-name "\n"))))))
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(setq error nil)
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(message "Message successfully undigestified")
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(let ((n rmail-current-message))
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(rmail-forget-messages)
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(rmail-show-message n)
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(rmail-delete-forward)))
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(cond (error
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(narrow-to-region (point-min) (1+ (point-max)))
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(delete-region (point-min) (point-max))
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(rmail-show-message rmail-current-message))))))
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;;; undigest.el ends here
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