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;;;; GNU Mailutils -- a suite of utilities for electronic mail
;;;; Copyright (C) 1999-2001, 2007, 2010-2012 Free Software Foundation,
;;;; Inc.
;;;;
;;;; GNU Mailutils 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, or (at your option)
;;;; any later version.
;;;;
;;;; GNU Mailutils 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 Mailutils. If not, see <http://www.gnu.org/licenses/>.
;;; This is a simple Guile program that generates automatic reply to
;;; incoming mail messages.
;;;
;;; usage: to your /etc/aliases add:
;;;
;;; username: "|/usr/local/bin/guimb -f <path>/reply.scm"
;;;
;;; and adjust variables below to your liking.
;;; Any message to the address username@your.host will be responded
;;; and (optionally) saved in a mailbox.
(define indent-prefix "> ")
(define save-mailbox #f)
(define reply-text
"Sorry, I am not here to attend your message. I will do\n\
it as soon as I come back.\n\n\
Kind regards\n")
;; Reply to the incoming message
(define (reply in-msg)
(let* ((out-msg (mu-message-create))
(in-port (mu-message-get-port in-msg "r"))
(out-port (mu-message-get-port out-msg "w")))
(mu-message-set-header out-msg "To"
(mu-message-get-header in-msg "From"))
(mu-message-set-header out-msg "Cc"
(mu-message-get-header in-msg "Cc"))
(mu-message-set-header out-msg "Subject"
(string-append
"Re: "
(mu-message-get-header in-msg "Subject")))
(display reply-text out-port)
(display "\n\nOriginal message:\n" out-port)
(do ((hdr (mu-message-get-header-fields in-msg) (cdr hdr)))
((null? hdr) #f)
(let ((s (car hdr)))
(display (string-append
indent-prefix
(car s) ": " (cdr s) "\n") out-port)))
(display (string-append indent-prefix "\n") out-port)
(do ((line (read-line in-port) (read-line in-port)))
((eof-object? line) #f)
(display (string-append indent-prefix line "\n") out-port))
(close-input-port in-port)
(close-output-port out-port)
(mu-message-send out-msg)))
;;; Upon receiving a message, store it away in the save mailbox and
;;; reply to the sender.
(let ((mbox (and save-mailbox (mu-mailbox-open save-mailbox "cw")))
(msg (mu-mailbox-get-message current-mailbox 1)))
(cond
(mbox
(mu-mailbox-append-message mbox msg)
(mu-mailbox-close mbox)))
(reply msg))
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