mail-lib / sendmail.el

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;;; sendmail.el --- mail sending commands for Emacs.  -*- byte-compile-dynamic: t -*-

;; Copyright (C) 1985, 86, 92, 93, 94, 95, 96, 98, 2000, 2001
;;   Free Software Foundation, Inc.

;; Maintainer: FSF
;; Keywords: mail

;; This file is part of XEmacs.

;; XEmacs 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 2, or (at your option)
;; any later version.

;; XEmacs 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 XEmacs; see the file COPYING.  If not, write to the 
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Synched up with: Emacs 21.0.106

;;; Commentary:

;; This mode provides mail-sending facilities from within Emacs.  It is
;; documented in the Emacs user's manual.

;;; Code:

(require 'rfc822)

(defgroup sendmail nil
  "Mail sending commands for Emacs."
  :prefix "mail-"
  :group 'mail)

;;;###autoload
(defcustom mail-from-style 'angles "\
*Specifies how \"From:\" fields look.

If `nil', they contain just the return address like:
	king@grassland.com
If `parens', they look like:
	king@grassland.com (Elvis Parsley)
If `angles', they look like:
	Elvis Parsley <king@grassland.com>
If `system-default', allows the mailer to insert its default From field
derived from the envelope-from address.

The email address passed to the mailer to specify the envelope-from
address is controlled by `mail-specify-envelope-from'."
  :type '(choice (const nil) (const parens) (const angles)
		 (const system-default))
  :group 'sendmail)

;;;###autoload
(defcustom mail-specify-envelope-from nil
  "*If non-nil, specify the envelope-from address when sending mail.
The value used to specify it is whatever is found in
`mail-envelope-from', with `user-mail-address' as fallback.

On most systems, specifying the envelope-from address
is a privileged operation."
  :type 'boolean
  :group 'sendmail)

(defcustom mail-envelope-from nil
  "*If non-nil, designate the envelope-from address when sending mail.
If this is nil while `mail-specify-envelope-from' is non-nil, the
content of `user-mail-address' is used."
  :type '(choice (const :tag "Use `user-mail-address'" nil)
		 string)
  :group 'sendmail)

;;;###autoload
(defcustom mail-self-blind nil "\
*Non-nil means insert BCC to self in messages to be sent.
This is done when the message is initialized,
so you can remove or alter the BCC field to override the default."
  :type 'boolean
  :group 'sendmail)

;;;###autoload
(defcustom mail-interactive nil "\
*Non-nil means when sending a message wait for and display errors.
nil means let mailer mail back a message to report errors."
  :type 'boolean
  :group 'sendmail)

;;; XEmacs change: moved rmail-ignored-headers here from rmail.el so that
;;; the value of mail-yank-ignored-headers can default from it.  Both of
;;; these end up in loaddefs.el, but "sendmail" comes before "rmail", so...
;;;
;;;###autoload
(defvar rmail-ignored-headers 
  (purecopy
   (concat
    "^\\("
    (mapconcat
     'identity
     '(;; RFC822
       "Sender:" "References:" "Return-Path:" "Received:"
       "[^: \t\n]*Message-ID:" "Errors-To:"
       ;; RFC977 (NNTP)
       "Path:" "Expires:" "Xref:" "Lines:" "Approved:" "Distribution:"
       ;; SYSV mail:
       "Content-Length:"
       ;; MIME:
       "Mime-Version:" "Content-Type:" "Content-Transfer-Encoding:"
       ;; X400
       "X400-Received:" "X400-Originator:" "X400-Mts-Identifier:"
       "X400-Content-Type:" "Content-Identifier:"
       ;; RMAIL and /usr/ucb/mail:
       "Status:" "Summary-Line:"
       ;; Supercite:
       "X-Attribution:"
       ;; Other random junk occasionally seen:
       "Via:" "Sent-Via:" "Mail-From:" "Origin:" "Comments:" "Originator:"
       "NF-ID:" "NF-From:" "Posting-Version:" "Posted:" "Posted-Date:"
       "Date-Received:" "Relay-Version:" "Article-I\\.D\\.:" "NNTP-Version:"
       "NNTP-Posting-Host:" "X-Mailer:" "X-Newsreader:" "News-Software:"
       "X-Received:" "X-References:" "X-Envelope-To:"
       "X-VMS-" "Remailed-" "X-Plantation:" "X-Windows:" "X-Pgp-"
       )
     "\\|")
    "\\)"))
  "*Gubbish header fields one would rather not see.")


;;;###autoload
(defcustom mail-yank-ignored-headers
  (purecopy
   (concat rmail-ignored-headers "\\|"
	   "^\\("
	   (mapconcat 'identity
		      '(;; RFC822
			"Resent-To:" "Resent-By:" "Resent-CC:"
			"To:" "Subject:" "In-Reply-To:"
			)
		      "\\|")
	   "\\)")) "\
*Delete these headers from old message when it's inserted in a reply."
  :type 'regexp
  :group 'sendmail)

;; Useful to set in site-init.el
;;;###autoload
(defcustom send-mail-function (if (or (eq system-type 'windows-nt)
				      (eq system-type 'cygwin32))
				  ;; there is no sendmail on windows.
				  'smtpmail-send-it
				'sendmail-send-it)
  "Function to call to send the current buffer as mail.
The headers should be delimited by a line which is
not a valid RFC822 header or continuation line,
that match the variable `mail-header-separator'.
This is used by the default mail-sending commands.  See also
`message-send-mail-function' for use with the Message package."
  :type '(radio (function-item sendmail-send-it :tag "Use Sendmail package")
		(function-item smtpmail-send-it :tag "Use SMTPmail package")
		(function-item feedmail-send-it :tag "Use Feedmail package")
		function)
  :group 'sendmail)

;;;###autoload
(defcustom mail-header-separator "--text follows this line--" "\
*Line used to separate headers from text in messages being composed."
  :type 'string
  :group 'sendmail)

;; Set up mail-header-separator for use as a category text property.
(put 'mail-header-separator 'rear-nonsticky '(category))
;;; This was a nice idea, for preventing accidental modification of
;;; the separator.   But I found it also prevented or obstructed
;;; certain deliberate operations, such as copying the separator line
;;; up to the top to send myself a copy of an already sent outgoing message
;;; and other things.  So I turned it off.  --rms.
;;;(put 'mail-header-separator 'read-only t)

;;;###autoload
(defcustom mail-archive-file-name nil "\
*Name of file to write all outgoing messages in, or nil for none.
This can be an inbox file or an Rmail file."
  :type '(choice file (const nil))
  :group 'sendmail)

;;;###autoload
(defcustom mail-default-reply-to nil
  "*Address to insert as default Reply-to field of outgoing messages.
If nil, it will be initialized from the REPLYTO environment variable
when you first send mail."
  :type '(choice (const nil) string)
  :group 'sendmail)

;;;###autoload
(defcustom mail-alias-file nil
  "*If non-nil, the name of a file to use instead of `/usr/lib/aliases'.
This file defines aliases to be expanded by the mailer; this is a different
feature from that of defining aliases in `.mailrc' to be expanded in Emacs.
This variable has no effect unless your system uses sendmail as its mailer."
  :type '(choice (const nil) file)
  :group 'sendmail)

; XEmacs:
(defvaralias 'mail-personal-alias-file 'mail-abbrev-mailrc-file)

(defcustom mail-setup-hook nil
  "Normal hook, run each time a new outgoing mail message is initialized.
The function `mail-setup' runs this hook."
  :type 'hook
  :options '(fortune-to-signature spook mail-abbrevs-setup)
  :group 'sendmail)

;; XEmacs: `mail-aliases' moved to `mail-abbrevs.el'.

(defvar mail-alias-modtime nil
  "The modification time of your mail alias file when it was last examined.")

;;;###autoload
(defcustom mail-yank-prefix "> "		; XEmacs change
  "*Prefix insert on lines of yanked message being replied to.
nil means use indentation."
  :type '(choice (const nil) string)
  :group 'sendmail)

(defcustom mail-indentation-spaces 3
  "*Number of spaces to insert at the beginning of each cited line.
Used by `mail-yank-original' via `mail-indent-citation'."
  :type 'integer
  :group 'sendmail)
(defvar mail-yank-hooks nil
  "Obsolete hook for modifying a citation just inserted in the mail buffer.
Each hook function can find the citation between (point) and (mark t).
And each hook function should leave point and mark around the citation
text as modified.

This is a normal hook, misnamed for historical reasons.
It is semi-obsolete and mail agents should no longer use it.")

(defcustom mail-citation-hook nil
  "*Hook for modifying a citation just inserted in the mail buffer.
Each hook function can find the citation between (point) and (mark t),
and should leave point and mark around the citation text as modified.
The hook functions can find the header of the cited message
in the variable `mail-citation-header', whether or not this is included
in the cited portion of the message.

If this hook is entirely empty (nil), a default action is taken
instead of no action."
  :type 'hook
  :group 'sendmail)

(defvar mail-citation-header nil
  "While running `mail-citation-hook', this variable holds the message header.
This enables the hook functions to see the whole message header
regardless of what part of it (if any) is included in the cited text.")

(defcustom mail-citation-prefix-regexp "[ \t]*[-a-z0-9A-Z]*>+[ \t]*\\|[ \t]*"
  "*Regular expression to match a citation prefix plus whitespace.
It should match whatever sort of citation prefixes you want to handle,
with whitespace before and after; it should also match just whitespace.
The default value matches citations like `foo-bar>' plus whitespace."
  :type 'regexp
  :group 'sendmail)

(defvar mail-abbrevs-loaded nil)
(defvar mail-mode-map nil)

; XEmacs: Removed autoloads of `build-mail-aliases' and `expand-mail-aliases'.
; See `mail-abbrevs.el'.

;;;###autoload
(defcustom mail-signature nil
  "*Text inserted at end of mail buffer when a message is initialized.
If t, it means to insert the contents of the file `mail-signature-file'.
If a string, that string is inserted.
 (To make a proper signature, the string should begin with \\n\\n-- \\n,
  which is the standard way to delimit a signature in a message.)
Otherwise, it should be an expression; it is evaluated
and should insert whatever you want to insert."
  :type '(choice (const "None" nil)
		 (const :tag "Use `.signature' file" t)
		 (string :tag "String to insert")
		 (sexp :tag "Expression to evaluate"))
  :group 'sendmail)
(put 'mail-signature 'risky-local-variable t)

(defcustom mail-signature-file "~/.signature"
  "*File containing the text inserted at end of mail buffer."
  :type 'file
  :group 'sendmail)

(defvar mail-reply-action nil)
(defvar mail-send-actions nil
  "A list of actions to be performed upon successful sending of a message.")
(put 'mail-reply-action 'permanent-local t)
(put 'mail-send-actions 'permanent-local t)

(defcustom mail-default-headers nil
  "*A string containing header lines, to be inserted in outgoing messages.
It is inserted before you edit the message,
so you can edit or delete these lines."
  :type '(choice (const nil) string)
  :group 'sendmail)

(defcustom mail-bury-selects-summary t
  "*If non-nil, try to show RMAIL summary buffer after returning from mail.
The functions \\[mail-send-on-exit] or \\[mail-dont-send] select
the RMAIL summary buffer before returning, if it exists and this variable
is non-nil."
  :type 'boolean
  :group 'sendmail)

(defcustom mail-send-nonascii 'mime
  "*Specify whether to allow sending non-ASCII characters in mail.
If t, that means do allow it.  nil means don't allow it.
`query' means ask the user each time.
`mime' means add an appropriate MIME header if none already present.
The default is `mime'.
Including non-ASCII characters in a mail message can be problematical
for the recipient, who may not know how to decode them properly."
  :type '(choice (const t) (const nil) (const query) (const mime))
  :group 'sendmail)

;; Note: could use /usr/ucb/mail instead of sendmail;
;; options -t, and -v if not interactive.
(defvar mail-mailer-swallows-blank-line
  (if (and (string-match "sparc-sun-sunos\\(\\'\\|[^5]\\)" system-configuration)
	   (file-readable-p "/etc/sendmail.cf")
	   (let ((buffer (get-buffer-create " *temp*")))
	     (unwind-protect
		 (save-excursion
		   (set-buffer buffer)
		   (insert-file-contents "/etc/sendmail.cf")
		   (goto-char (point-min))
		   (let ((case-fold-search nil))
		     (re-search-forward "^OR\\>" nil t)))
	       (kill-buffer buffer))))
      ;; According to RFC822, "The field-name must be composed of printable
      ;; ASCII characters (i.e. characters that have decimal values between
      ;; 33 and 126, except colon)", i.e. any chars except ctl chars,
      ;; space, or colon.
      '(looking-at "[ \t]\\|[][!\"#$%&'()*+,-./0-9;<=>?@A-Z\\\\^_`a-z{|}~]+:"))
  "Set this non-nil if the system's mailer runs the header and body together.
\(This problem exists on Sunos 4 when sendmail is run in remote mode.)
The value should be an expression to test whether the problem will
actually occur.")

;; XEmacs: RMS doesn't like this behavior but it seems more logical to
;; me. --ben
(defcustom mail-use-multiple-buffers-p t 
  "Non-nil means `mail' will create a new buffer if one already exists."
  :type 'boolean
  :group 'sendmail)

(defvar mail-mode-syntax-table nil
  "Syntax table used while in mail mode.")

(if (not mail-mode-syntax-table)
    (progn
     (setq mail-mode-syntax-table (copy-syntax-table text-mode-syntax-table))
     (modify-syntax-entry ?% ". " mail-mode-syntax-table)))

(defvar mail-font-lock-keywords
  (eval-when-compile
    (let* ((cite-chars "[>|}]")
	   (cite-prefix "[A-Za-z]")
	   (cite-suffix (concat cite-prefix "0-9_.@-`'\"")))
      (list '("^\\(To\\|Newsgroups\\):" . font-lock-function-name-face)
	    '("^\\(B?CC\\|Reply-to\\):" . font-lock-keyword-face)
	    '("^\\(Subject:\\)[ \t]*\\(.+\\)?"
	      (1 font-lock-comment-face) (2 font-lock-type-face nil t))
	    ;; Use EVAL to delay in case `mail-header-separator' gets changed.
	    '(eval .
	      (let ((separator (if (zerop (length mail-header-separator))
				   " \\`\\' "
				 (regexp-quote mail-header-separator))))
		(cons (concat "^" separator "$") 'font-lock-warning-face)))
	    ;; Use MATCH-ANCHORED to effectively anchor the regexp left side.
	    `(,cite-chars
	      (,(concat "\\=[ \t]*"
			"\\(\\([" cite-prefix "]+[" cite-suffix "]*\\)?"
			"\\(" cite-chars "[ \t]*\\)\\)+"
			"\\(.*\\)")
	       (beginning-of-line) (end-of-line)
	       (2 font-lock-constant-face nil t)
	       (4 font-lock-comment-face nil t)))
	    '("^\\(X-[A-Za-z0-9-]+\\|In-reply-to\\):.*"
	      . font-lock-string-face))))
  "Additional expressions to highlight in Mail mode.")
(put 'mail-mode 'font-lock-defaults '(mail-font-lock-keywords t))

;; Courtesy of Per Abrahamsen <abraham@dina.kvl.dk> in an attempt to make
;; Emacs and XEmacs less stupid about default mail addresses.

;; We trust the administrator if he has set `mail-host-address'.
;; We trust the user if he has already customized `user-mail-address'.
(defcustom query-user-mail-address (and (not mail-host-address)
					(not user-mail-address))
  "If non-nil, prompt the user for his mail address."
  :group 'message
  :type 'boolean)

;;;###autoload
(defun user-mail-address ()
  "Query the user for his mail address, unless it is already known."
  (interactive)
  (when (and (not noninteractive) query-user-mail-address)
    (let ((addr (or user-mail-address
		    (concat (user-login-name) "@"
				    (or mail-host-address
					(system-name))))))
      (setq user-mail-address
	    (read-string "Your mail address? " (cons addr 0)))
      (setq query-user-mail-address nil)
      ;; TODO: Run sanity check from Gnus here.
      (when (y-or-n-p "Save address for future sessions? ")
	(put 'user-mail-address 'saved-value
	     (list user-mail-address))
	(put 'query-user-mail-address 'saved-value '(nil))
        (require 'cus-edit)
	(custom-save-all))))
  (if user-mail-address
      user-mail-address
    (setq user-mail-address (concat (user-login-name) "@"
                                    (or mail-host-address
                                        (system-name))))))

(defun sendmail-sync-aliases ()
  (let ((modtime (nth 5 (file-attributes (mail-abbrev-mailrc-file))))) ; XEmacs
    (or (equal mail-alias-modtime modtime)
	(setq mail-alias-modtime modtime
	      mail-aliases t))))

(defun mail-setup (to subject in-reply-to cc replybuffer actions)
  (require 'mail-abbrevs)
  (or mail-default-reply-to
      (setq mail-default-reply-to (getenv "REPLYTO")))
  (sendmail-sync-aliases)
  (if (eq mail-aliases t)
      (progn
	(setq mail-aliases nil)
	;; XEmacs: call to `build-mail-alias' removed, done by
	;; `mail-aliases-setup' below.
	))
  ;; Don't leave this around from a previous message.
  (kill-local-variable 'buffer-file-coding-system)
  ;; This doesn't work for enable-multibyte-characters.
  ;; (kill-local-variable 'enable-multibyte-characters)
  ;; XEmacs, don't (set-buffer-multibyte default-enable-multibyte-characters)
  (if (and (boundp 'current-input-method) current-input-method) ;; XEmacs
      (inactivate-input-method))
  (setq mail-send-actions actions)
  (mail-aliases-setup) ;; XEmacs
  (setq mail-reply-action replybuffer)
  (goto-char (point-min))
  (insert "To: ")
  (save-excursion
    (if to
        ;; Here removed code to extract names from within <...>
        ;; on the assumption that mail-strip-quoted-names
        ;; has been called and has done so.
	(let ((fill-prefix "\t")
              (address-start (point)))
	  (insert to "\n")
          (fill-region-as-paragraph address-start (point-max))
	  (goto-char (point-max))
	  (unless (bolp)
	    (newline)))
      (newline))
    (if cc
	(let ((fill-prefix "\t")
	      (address-start (progn (insert "CC: ") (point))))
	  (insert cc "\n")
	  (fill-region-as-paragraph address-start (point-max))
	  (goto-char (point-max))
	  (unless (bolp)
	    (newline))))
    (if in-reply-to
        (let ((fill-prefix "\t")
	      (fill-column 78)
	      (address-start (point)))
	  (insert "In-reply-to: " in-reply-to "\n")
	  (fill-region-as-paragraph address-start (point-max))
	  (goto-char (point-max))
	  (unless (bolp)
	    (newline))))
    (insert "Subject: " (or subject "") "\n")
    (if mail-default-headers
	(insert mail-default-headers))
    (if mail-default-reply-to
	(insert "Reply-to: " mail-default-reply-to "\n"))
    (if mail-self-blind
	(insert "BCC: " (user-login-name) "\n")) ;; XEmacs
    (if mail-archive-file-name
	(insert "FCC: " mail-archive-file-name "\n"))
    (put-text-property (point)
		       (progn
			 (insert mail-header-separator "\n")
			 (1- (point)))
		       'category 'mail-header-separator)
    ;; Insert the signature.  But remember the beginning of the message.
    (if to (setq to (point)))
    (cond ((eq mail-signature t)
	   (if (file-exists-p mail-signature-file)
	       (progn
		 (insert "\n\n-- \n")
		 (insert-file-contents mail-signature-file))))
	  ((stringp mail-signature)
	   (insert mail-signature))
	  (t
	   (eval mail-signature)))
    (goto-char (point-max))
    (or (bolp) (newline)))
  (if to (goto-char to))
  (or to subject in-reply-to
      (set-buffer-modified-p nil))
  (run-hooks 'mail-setup-hook))

(defcustom mail-mode-hook nil
  "Hook run by Mail mode."
  :group 'sendmail
  :type 'hook
  :options '(footnote-mode))

;;;###autoload
(defun mail-mode ()
  "Major mode for editing mail to be sent.
Like Text Mode but with these additional commands:
\\[mail-send]  mail-send (send the message)    \\[mail-send-and-exit]  mail-send-and-exit
Here are commands that move to a header field (and create it if there isn't):
	 \\[mail-to]  move to To:	\\[mail-subject]  move to Subject:
	 \\[mail-cc]  move to CC:	\\[mail-bcc]  move to BCC:
	 \\[mail-fcc]  move to FCC:      \\[mail-reply-to] move to Reply-To:
\\[mail-text]  mail-text (move to beginning of message text).
\\[mail-signature]  mail-signature (insert `mail-signature-file' file).
\\[mail-yank-original]  mail-yank-original (insert current message, in Rmail).
\\[mail-fill-yanked-message]  mail-fill-yanked-message (fill what was yanked).
\\[mail-sent-via]  mail-sent-via (add a Sent-via field for each To or CC).
Turning on Mail mode runs the normal hooks `text-mode-hook' and
`mail-mode-hook' (in that order)."
  (interactive)
  (kill-all-local-variables)
  (make-local-variable 'mail-reply-action)
  (make-local-variable 'mail-send-actions)
  (set-syntax-table mail-mode-syntax-table)
  (use-local-map mail-mode-map)
  (setq local-abbrev-table text-mode-abbrev-table)
  (setq major-mode 'mail-mode)
  (setq mode-name "Mail")
  (setq buffer-offer-save t)
  (setq mail-reply-action nil)
  (make-local-variable 'mail-send-actions)
  (make-local-variable 'paragraph-separate)
  (make-local-variable 'paragraph-start)
  (make-local-variable 'normal-auto-fill-function)
  (setq normal-auto-fill-function 'mail-mode-auto-fill)
  (make-local-variable 'fill-paragraph-function)
  (setq fill-paragraph-function 'mail-mode-fill-paragraph)
  ;; Allow using comment commands to add/remove quoting (this only does
  ;; anything if mail-yank-prefix is set to a non-nil value).
  (set (make-local-variable 'comment-start) mail-yank-prefix)
  (make-local-variable 'adaptive-fill-regexp)
  (setq adaptive-fill-regexp
	(concat adaptive-fill-regexp
		"\\|[ \t]*[-[A-Za-z0-9]]*>+[ \t]*"))
  (make-local-variable 'adaptive-fill-first-line-regexp)
  (setq adaptive-fill-first-line-regexp
	(concat adaptive-fill-first-line-regexp
		"\\|[ \t]*[-[A-Za-z0-9]]*>+[ \t]*"))
  (turn-on-auto-fill)	; XEmacs - maybe filladapt should be default, too.
  ;; `-- ' precedes the signature.  `-----' appears at the start of the
  ;; lines that delimit forwarded messages.
  ;; Lines containing just >= 3 dashes, perhaps after whitespace,
  ;; are also sometimes used and should be separators.
  (setq paragraph-start (concat (regexp-quote mail-header-separator)
				"$\\|\t*\\([-|#;>* ]\\|(?[0-9]+[.)]\\)+$"
				"\\|[ \t]*[[A-Za-z0-9]]*>+[ \t]*$\\|[ \t]*$\\|"
				"-- $\\|---+$\\|"
				page-delimiter))
  (setq paragraph-separate paragraph-start)
  (if (featurep 'menubar)
      (easy-menu-add mail-menubar-menu))
  (run-hooks 'text-mode-hook 'mail-mode-hook))


(defun mail-header-end ()
  "Return the buffer location of the end of headers, as a number."
  (save-restriction
    (widen)
    (save-excursion
      (rfc822-goto-eoh)
      (point))))

(defun mail-text-start ()
  "Return the buffer location of the start of text, as a number."
  (save-restriction
    (widen)
    (save-excursion
      (rfc822-goto-eoh)
      (forward-line 1)
      (point))))

(defun mail-sendmail-delimit-header ()
  "Set up whatever header delimiter convention sendmail will use.
Concretely: replace the first blank line in the header with the separator."
  (rfc822-goto-eoh)
  (insert mail-header-separator)
  (point))

(defun mail-sendmail-undelimit-header ()
  "Remove header separator to put the message in correct form for sendmail.
Leave point at the start of the delimiter line."
  (rfc822-goto-eoh)
  (delete-region (point) (progn (end-of-line) (point))))

(defun mail-mode-auto-fill ()
  "Carry out Auto Fill for Mail mode.
If within the headers, this makes the new lines into continuation lines."
  (if (< (point) (mail-header-end))
      (let ((old-line-start (save-excursion (beginning-of-line) (point))))
	(if (do-auto-fill)
	    (save-excursion
	      (beginning-of-line)
	      (while (not (eq (point) old-line-start))
		;; Use insert-before-markers in case we're inserting
		;; before the saved value of point (which is common).
		(insert-before-markers "   ")
		(forward-line -1))
	      t)))
    (do-auto-fill)))

(defun mail-mode-fill-paragraph (arg)
  ;; Do something special only if within the headers.
  (if (< (point) (mail-header-end))
      (let (beg end fieldname) 
	(when (prog1 (re-search-backward "^[-a-zA-Z]+:" nil 'yes)
		(setq beg (point)))
	(setq fieldname
		(downcase (buffer-substring beg (1- (match-end 0))))))
	(forward-line 1)
	;; Find continuation lines and get rid of their continuation markers.
	(while (looking-at "[ \t]")
	  (delete-horizontal-space)
	  (forward-line 1))
	(setq end (point-marker))
	(goto-char beg)
	;; If this field contains addresses,
	;; make sure we can fill after each address.
	(if (member fieldname
		    '("to" "cc" "bcc" "from" "reply-to"
		      "resent-to" "resent-cc" "resent-bcc"
		      "resent-from" "resent-reply-to"))
	    (while (search-forward "," end t)
	      (or (looking-at "[ \t]")
		  (insert " "))))
	(fill-region-as-paragraph beg end)
	;; Mark all lines except the first as continuations.
	(goto-char beg)
	(forward-line 1)
	(while (< (point) end)
	  (insert "  ")
	  (forward-line 1))
	(move-marker end nil)
	t)))

;;; Set up keymap.

(if mail-mode-map
    nil
  (setq mail-mode-map (make-sparse-keymap))
  ;; XEmacs: (define-key mail-mode-map "\M-\t" 'mail-complete)
  (set-keymap-parents mail-mode-map (list text-mode-map)) ;; XEmacs
  (set-keymap-name mail-mode-map 'mail-mode-map) ;; XEmacs
  (define-key mail-mode-map "\C-c?" 'describe-mode)
  (define-key mail-mode-map "\C-c\C-f\C-t" 'mail-to)
  (define-key mail-mode-map "\C-c\C-f\C-b" 'mail-bcc)
  (define-key mail-mode-map "\C-c\C-f\C-f" 'mail-fcc)
  (define-key mail-mode-map "\C-c\C-f\C-c" 'mail-cc)
  (define-key mail-mode-map "\C-c\C-f\C-s" 'mail-subject)
  (define-key mail-mode-map "\C-c\C-f\C-r" 'mail-reply-to)
  (define-key mail-mode-map "\C-c\C-t" 'mail-text)
  (define-key mail-mode-map "\C-c\C-y" 'mail-yank-original)
  (define-key mail-mode-map "\C-c\C-r" 'mail-yank-region)
  (define-key mail-mode-map "\C-c\C-q" 'mail-fill-yanked-message)
  (define-key mail-mode-map "\C-c\C-w" 'mail-signature)
  ;; XEmacs: (define-key mail-mode-map "\C-c\C-v" 'mail-sent-via)
  (define-key mail-mode-map "\C-c\C-c" 'mail-send-and-exit)
  (define-key mail-mode-map "\C-c\C-s" 'mail-send)
  (define-key mail-mode-map "\C-c\C-i" 'mail-attach-file))

;;; mail-mode popup menu

(defvar mail-menubar-menu
  (purecopy
   '("Mail"
     "Sending Mail:"
     "----"
     ["Send and Exit"		mail-send-and-exit		t]
     ["Send Mail"		mail-send			t]
     "----"
     "Navigation:"
     "----"
     ["To:"			mail-to				t]
     ["Subject:"		mail-subject			t]
     ["CC:"			mail-cc				t]
     ["FCC:"			mail-fcc			t]
     ["BCC:"			mail-bcc			t]
     ["Reply-To:"		mail-reply-to			t]
     ;; XEmacs   ["Sent Via:"		mail-sent-via			t]
     ["Text"			mail-text			t]
     "----"
     "Miscellaneous Commands:"
     "----"
     ["Expand Aliases"          expand-mail-aliases             t]
     ["Yank Original"		mail-yank-original
      (not (null mail-reply-action))]
     ["Fill Yanked Message"	mail-fill-yanked-message
      (save-excursion
	(goto-char (point-min))
	(and (search-forward (concat "\n" mail-header-separator
				     "\n") nil t)
	     (not (looking-at "[ \t\n]*\\'"))))]
     ["Insert Signature"	mail-signature
      (and (stringp mail-signature-file)
	   (file-exists-p mail-signature-file))]
     ["Insert File..."		insert-file			t]
     ["Insert Buffer..."	insert-buffer			t]
     "----"
     ["Cancel"			mail-dont-send			t]
     ))
   "Menubar menu for `mail-mode'.")

(defvar mail-popup-menu
  (purecopy
   (cons "Sendmail Commands"
	 (cdr mail-menubar-menu)))
  "Menubar menu for `mail-mode'.")


;; User-level commands for sending.

(defun mail-send-and-exit (arg)
  "Send message like `mail-send', then, if no errors, exit from mail buffer.
Prefix arg means don't delete this window."
  (interactive "P")
  (mail-send)
  (mail-bury arg))

(defun mail-dont-send (arg)
  "Don't send the message you have been editing.
Prefix arg means don't delete this window."
  (interactive "P")
  (mail-bury arg))

(defun mail-bury (arg)
  "Bury this mail buffer."
  (let ((newbuf (other-buffer (current-buffer))))
    (bury-buffer (current-buffer))
    (if (and (or (window-dedicated-p (frame-selected-window))
		 (cdr (assq 'mail-dedicated-frame (frame-parameters))))
	     (not (null (delq (selected-frame) (visible-frame-list)))))
	(delete-frame (selected-frame))
      (let (rmail-flag summary-buffer)
	(and (not arg)
	     (not (one-window-p))
	     (save-excursion
	       (set-buffer (window-buffer (next-window (selected-window) 'not)))
	       (setq rmail-flag (eq major-mode 'rmail-mode))
	       (setq summary-buffer
		     (and mail-bury-selects-summary
			  (boundp 'rmail-summary-buffer)
			  rmail-summary-buffer
			  (buffer-name rmail-summary-buffer)
			  (not (get-buffer-window rmail-summary-buffer))
			  rmail-summary-buffer))))
	(if rmail-flag
	    ;; If the Rmail buffer has a summary, show that.
	    (if summary-buffer (switch-to-buffer summary-buffer)
	      (delete-window))
	  (switch-to-buffer newbuf))))))

(defcustom mail-send-hook nil
  "Hook run just before sending mail with `mail-send'."
  :type 'hook
  :options '(flyspell-mode-off)
  :group 'sendmail)

(defun mail-send ()
  "Send the message in the current buffer.
If `mail-interactive' is non-nil, wait for success indication
or error messages, and inform user.
Otherwise any failure is reported in a message back to
the user from the mailer."
  (interactive)
  (if (if buffer-file-name
        (y-or-n-p "Send buffer contents as mail message? ")
      (or (buffer-modified-p)
          (y-or-n-p "Message already sent; resend? ")))
      (let ((inhibit-read-only t)
	    (opoint (point)))
	;; Complain about any invalid line.
	(goto-char (point-min))
	(while (< (point) (mail-header-end))
	  (unless (looking-at "[ \t]\\|.*:\\|$")
	    (push-mark opoint)
	    (error "Invalid header line (maybe a continuation line lacks initial whitespace)"))
	  (forward-line 1))
	(goto-char opoint)
	(if (interactive-p) (expand-abbrev))  ;; XEmacs: for mail-abbrevs
	(run-hooks 'mail-send-hook)
	(message "Sending...")
	(funcall send-mail-function)
	;; Now perform actions on successful sending.
	(while mail-send-actions
	  (condition-case nil
	      (apply (car (car mail-send-actions))
		     (cdr (car mail-send-actions)))
	    (error))
	  (setq mail-send-actions (cdr mail-send-actions)))
	(message "Sending...done")

        ;; If buffer has no file, mark it as unmodified and delete autosave.
        (cond ((or (not buffer-file-name)
                   (not (buffer-modified-p)))
               (set-buffer-modified-p nil)
               (delete-auto-save-file-if-necessary t))
              ((or noninteractive
                   (y-or-n-p (format "Save file %s? " buffer-file-name)))
               (save-buffer))))))

(defun sendmail-send-it ()
  "Send the current mail buffer using the Sendmail package.
This is a suitable value for `send-mail-function'.  It sends using the
external program defined by `sendmail-program'."
  (require 'mail-utils)
  (let ((errbuf (if mail-interactive
		    (generate-new-buffer " sendmail errors")
		  0))
	(tembuf (generate-new-buffer " sendmail temp"))
	(case-fold-search nil)
	(coding (and (local-variable-p 'buffer-file-coding-system
				       (current-buffer))
		     buffer-file-coding-system))
;;;	resend-to-addresses
	delimline
	fcc-was-found
	(mailbuf (current-buffer))
	(program (if (boundp 'sendmail-program)
		     sendmail-program
		   "/usr/lib/sendmail"))
	(mail-envelope-from mail-envelope-from))
    (unwind-protect
	(save-excursion
	  (set-buffer tembuf)
	  (erase-buffer)
	  (insert-buffer-substring mailbuf)
	  (if (or (featurep 'mule) (featurep 'file-coding)) ;; XEmacs
	      (set-buffer-file-coding-system coding))
	  (goto-char (point-max))
	  ;; require one newline at the end.
	  (or (= (preceding-char) ?\n)
	      (insert ?\n))
	  ;; Change header-delimiter to be what sendmail expects.
	  (goto-char (mail-header-end))
	  (delete-region (point) (progn (end-of-line) (point)))
	  (setq delimline (point-marker))
;XEmacs removed.  See second paragraph in `mail-abbrevs.el' for rationale.
;	  (sendmail-sync-aliases)
;	  (if mail-aliases
;	      (expand-mail-aliases (point-min) delimline))
	  (goto-char (point-min))
	  ;; Ignore any blank lines in the header
	  (while (and (re-search-forward "\n\n\n*" delimline t)
		      (< (point) delimline))
	    (replace-match "\n"))
	  (goto-char (point-min))
	  (let ((case-fold-search t))
;;;	    (goto-char (point-min))
;;;	    (while (re-search-forward "^Resent-\\(to\\|cc\\|bcc\\):" delimline t)
;;;	      (setq resend-to-addresses
;;;		    (save-restriction
;;;		      (narrow-to-region (point)
;;;					(save-excursion
;;;					  (forward-line 1)
;;;					  (while (looking-at "^[ \t]")
;;;					    (forward-line 1))
;;;					  (point)))
;;;		      (append (mail-parse-comma-list)
;;;			      resend-to-addresses)))
;;;	      ;; Delete Resent-BCC ourselves
;;;	      (if (save-excursion (beginning-of-line)
;;;				  (looking-at "resent-bcc"))
;;;		  (delete-region (save-excursion (beginning-of-line) (point))
;;;				 (save-excursion (end-of-line) (1+ (point))))))
;;; Apparently this causes a duplicate Sender.
;;;	    ;; If the From is different than current user, insert Sender.
;;;	    (goto-char (point-min))
;;;	    (and (re-search-forward "^From:"  delimline t)
;;;		 (progn
;;;		   (require 'mail-utils)
;;;		   (not (string-equal
;;;			 (mail-strip-quoted-names
;;;			  (save-restriction
;;;			    (narrow-to-region (point-min) delimline)
;;;			    (mail-fetch-field "From")))
;;;			 (user-login-name))))
;;;		 (progn
;;;		   (forward-line 1)
;;;		   (insert "Sender: " (user-login-name) "\n")))
	    ;; Don't send out a blank subject line
	    (goto-char (point-min))
	    (if (re-search-forward "^Subject:\\([ \t]*\n\\)+\\b" delimline t)
		(replace-match "")
	      ;; This one matches a Subject just before the header delimiter.
	      (if (and (re-search-forward "^Subject:\\([ \t]*\n\\)+" delimline t)
		       (= (match-end 0) delimline))
		  (replace-match "")))
	    ;; Put the "From:" field in unless for some odd reason
	    ;; they put one in themselves.
	    (goto-char (point-min))
	    (if (not (re-search-forward "^From:" delimline t))
		(let* ((login (user-mail-address))
		       (fullname (user-full-name)))
		  (cond ((eq mail-from-style 'angles)
			 (insert "From: " fullname)
			 (let ((fullname-start (+ (point-min) 6))
			       (fullname-end (point-marker)))
			   (goto-char fullname-start)
			   ;; Look for a character that cannot appear unquoted
			   ;; according to RFC 822.
			   (if (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]"
						  fullname-end 1)
			       (progn
				 ;; Quote fullname, escaping specials.
				 (goto-char fullname-start)
				 (insert "\"")
				 (while (re-search-forward "[\"\\]"
							   fullname-end 1)
				   (replace-match "\\\\\\&" t))
				 (insert "\""))))
			 (insert " <" login ">\n"))
			((eq mail-from-style 'parens)
			 (insert "From: " login " (")
			 (let ((fullname-start (point)))
			   (insert fullname)
			   (let ((fullname-end (point-marker)))
			     (goto-char fullname-start)
			     ;; RFC 822 says \ and nonmatching parentheses
			     ;; must be escaped in comments.
			     ;; Escape every instance of ()\ ...
			     (while (re-search-forward "[()\\]" fullname-end 1)
			       (replace-match "\\\\\\&" t))
			     ;; ... then undo escaping of matching parentheses,
			     ;; including matching nested parentheses.
			     (goto-char fullname-start)
			     (while (re-search-forward 
				     "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
				     fullname-end 1)
			       (replace-match "\\1(\\3)" t)
			       (goto-char fullname-start))))
			 (insert ")\n"))
			((null mail-from-style)
			 (insert "From: " login "\n"))
			((eq mail-from-style 'system-default)
			 nil)
			(t (error "Invalid value for `mail-from-style'")))))
	    ;; Insert an extra newline if we need it to work around
	    ;; Sun's bug that swallows newlines.
	    (goto-char (1+ delimline))
	    (if (eval mail-mailer-swallows-blank-line)
		(newline))
	    ;; Find and handle any FCC fields.
	    (goto-char (point-min))
	    (if (re-search-forward "^FCC:" delimline t)
		(progn
		  (setq fcc-was-found t)
		  (mail-do-fcc delimline)))
	    (if mail-interactive
		(save-excursion
		  (set-buffer errbuf)
		  (erase-buffer))))

	  ;; XEmacs change
	  (mail-check-safe-charset)

	  (goto-char (point-min))
	  (if (let ((case-fold-search t))
		(re-search-forward "^To:\\|^cc:\\|^bcc:\\|^resent-to:\
\\|^resent-cc:\\|^resent-bcc:"
				   delimline t))
	      (let* ((default-directory "/")
		     (args 
		      (append (list (point-min) (point-max)
				    program
				    nil errbuf nil "-oi")
			      ;; Always specify who from,
			      ;; since some systems have
			      ;; broken sendmails.
			      (and mail-specify-envelope-from
				   (list "-f" (or mail-envelope-from
						  ;; XEmacs:
						  (user-mail-address))))
;;; 			      ;; Don't say "from root" if running under su.
;;; 			      (and (equal (user-real-login-name) "root")
;;; 				   (list "-f" (user-login-name)))
			      (and mail-alias-file
				   (list (concat "-oA" mail-alias-file)))
			      (if mail-interactive
				  ;; These mean "report errors to terminal"
				  ;; and "deliver interactively"
				  '("-oep" "-odi")
				;; These mean "report errors by mail"
				;; and "deliver in background".
				'("-oem" "-odb"))
;;;			      ;; Get the addresses from the message
;;;			      ;; unless this is a resend.
;;;			      ;; We must not do that for a resend
;;;			      ;; because we would find the original addresses.
;;;			      ;; For a resend, include the specific addresses.
;;;			      (or resend-to-addresses
				  '("-t")
;;;				  )
			      )
		      )
		     (exit-value (apply 'call-process-region args)))
		(or (null exit-value) (zerop exit-value)
		    (error "Sending...failed with exit value %d" exit-value)))
	    (or fcc-was-found
		(error "No recipients")))
	  (if mail-interactive
	      (save-excursion
		(set-buffer errbuf)
		(goto-char (point-min))
		(while (re-search-forward "\n\n* *" nil t)
		  (replace-match "; "))
		(if (not (zerop (buffer-size)))
		    (error "Sending...failed to %s"
			   (buffer-substring (point-min) (point-max)))))))
      (kill-buffer tembuf)
      (if (bufferp errbuf)
	  (kill-buffer errbuf)))))

;;; XEmacs FCC hackery, by jwz.  This version works on BABYL and VM buffers.
;;; To accomplish the latter, VM is loaded when this file is compiled.
;;; Don't worry, it's only loaded at compile-time.
;;; The hackery somewhat reverted by jas to prevent mail lossage.

(defun mail-do-fcc (header-end)
  (let (fcc-list
	(rmailbuf (current-buffer))
	(time (current-time))
	(tembuf (generate-new-buffer " rmail output"))
	(case-fold-search t))
    (or (markerp header-end) (error "header-end must be a marker"))
    (save-excursion
      (goto-char (point-min))
      (while (re-search-forward "^FCC:[ \t]*" header-end t)
	(setq fcc-list (cons (buffer-substring (point)
					       (progn
						 (end-of-line)
						 (skip-chars-backward " \t")
						 (point)))
			     fcc-list))
	(delete-region (match-beginning 0)
		       (progn (forward-line 1) (point))))
      (set-buffer tembuf)
      (erase-buffer)
      ;; This initial newline is written out if the fcc file already exists.
      (insert "\nFrom " (user-login-name) " "
	      (current-time-string time) "\n")
      ;; Insert the time zone before the year.
      (forward-char -1)
      (forward-word -1)
      (require 'mail-utils)
      (insert (mail-rfc822-time-zone time) " ")
      (goto-char (point-max))
      (insert-buffer-substring rmailbuf)
      ;; Make sure messages are separated.
      (goto-char (point-max))
      (insert ?\n)
      (goto-char 2)
      ;; ``Quote'' "^From " as ">From "
      ;;  (note that this isn't really quoting, as there is no requirement
      ;;   that "^[>]+From " be quoted in the same transparent way.)
      (let ((case-fold-search nil))
	(while (search-forward "\nFrom " nil t)
	  (forward-char -5)
	  (insert ?>)))
      (while fcc-list
	(let* ((buffer (find-buffer-visiting (car fcc-list)))
	       (curbuf (current-buffer))
	       dont-write-the-file
	       buffer-matches-file
	       (beg (point-min)) (end (point-max))
	       (beg2 (save-excursion (goto-char (point-min))
				     (forward-line 2) (point))))
	  (if buffer
	      ;; File is present in a buffer => append to that buffer.
	      (save-excursion
		(set-buffer buffer)
		(setq buffer-matches-file
		      (and (not (buffer-modified-p))
			   (verify-visited-file-modtime buffer)))
		;; Keep the end of the accessible portion at the same place
		;; unless it is the end of the buffer.
		(let ((max (if (/= (1+ (buffer-size)) (point-max))
			       (point-max))))
		  (unwind-protect
		      ;; Code below lifted from rmailout.el
		      ;; function rmail-output-to-rmail-file:
		      (let ((buffer-read-only nil)
			    (msg (and (boundp 'rmail-current-message)
				      rmail-current-message)))
			;; If MSG is non-nil, buffer is in RMAIL mode.
			(if msg
			    (progn
			      ;; Append to an ordinary buffer as a
			      ;; Unix mail message.
			      (rmail-maybe-set-message-counters)
			      (widen)
			      (narrow-to-region (point-max) (point-max))
			      (insert "\C-l\n0, unseen,,\n*** EOOH ***\n"
				      "Date: " (mail-rfc822-date) "\n")
			      (insert-buffer-substring curbuf beg2 end)
			      (insert "\n\C-_")
			      (goto-char (point-min))
			      (widen)
			      (search-backward "\n\^_")
			      (narrow-to-region (point) (point-max))
			      (rmail-count-new-messages t)
			      (rmail-show-message msg)
			      (setq max nil))
			  (if (with-current-buffer buffer ;; XEmacs
				(eq major-mode 'vm-mode))
			      (with-current-buffer buffer
				(mail-do-fcc-vm-internal tembuf))
			    ;; Output file not in rmail mode
			    ;; => just insert at the end.
			    (narrow-to-region (point-min) (1+ (buffer-size)))
			    (goto-char (point-max))
			    (insert-buffer-substring curbuf beg end)))
			(or buffer-matches-file
			    (progn
			      (if (y-or-n-p (format "Save file %s? "
						    (car fcc-list)))
				  (save-buffer))
			      (setq dont-write-the-file t))))
		    (if max (narrow-to-region (point-min) max))))))
	  ;; Append to the file directly,
	  ;; unless we've already taken care of it.
	  ;; (It's OK if it is an RMAIL or VM file -- the message will be
	  ;; parsed when the file is read in.)
	  (unless dont-write-the-file
	    (if (and (file-exists-p (car fcc-list))
		     ;; Check that the file isn't empty.  We don't
		     ;; want to insert a newline at the start of an
		     ;; empty file.
		     (not (zerop (nth 7 (file-attributes (car fcc-list)))))
		     (mail-file-babyl-p (car fcc-list)))
		;; If the file is a Babyl file,
		;; convert the message to Babyl format.
		(let ((coding-system-for-write
		       (or rmail-file-coding-system
			   'emacs-mule)))
		  (save-excursion
		    (set-buffer (get-buffer-create " mail-temp"))
		    (setq buffer-read-only nil)
		    (erase-buffer)
		    (insert "\C-l\n0, unseen,,\n*** EOOH ***\n"
			    "Date: " (mail-rfc822-date) "\n")
		    (insert-buffer-substring curbuf beg2 end)
		    (insert "\n\C-_")
		    (write-region (point-min) (point-max) (car fcc-list) t)
		    (erase-buffer)))
	      (write-region
	       (1+ (point-min)) (point-max) (car fcc-list) t)))
	  (and buffer (not dont-write-the-file)
	       (with-current-buffer buffer
		 (set-visited-file-modtime))))
	(setq fcc-list (cdr fcc-list))))
    (kill-buffer tembuf)))

;; XEmacs:
(defun mail-do-fcc-vm-internal (buffer)
  (or (eq major-mode 'vm-mode) (error "this only works in vm-mode"))
  (let ((buffer-read-only nil)
	(foreign-folder-p (not (eq vm-folder-type 'From_))))

    (if foreign-folder-p
	;; `buffer' has already been prepared with a "From " line which
	;; has a sensible user-id and date in it, but if we're FCCing to
	;; a VM folder that isn't in From_ format, we must discard that
	;; and let VM do whatever voodoo it needs to do.  (Actually we
	;; could do this all the time, but then all FCCed messages would
	;; have "From VM ..." envelopes, which is less attractive.)
	(save-excursion
	  (set-buffer buffer)
	  (goto-char (point-min))
	  (skip-chars-forward "\n")
	  (forward-line)
	  (delete-region (point-min) (point))))

    ;; Use eval to inhibit compilation of the following code.
    ;; The code contains macros, and to compile them a (reuqire
    ;; 'vm-misc) is needed.  When VM stopped being bundled with
    ;; XEmacs, this require call became impossible.
    (eval
     (quote
      ;; Largely copied from #'vm-save-message in vm-save.el
      (vm-save-restriction
       (widen)
       (goto-char (point-max))
       (if foreign-folder-p
	   (vm-write-string (current-buffer)
			    (vm-leading-message-separator vm-folder-type)))
       (insert-buffer-substring buffer)
       (if foreign-folder-p
	   (vm-write-string (current-buffer)
			    (vm-trailing-message-separator vm-folder-type)))

       (vm-increment vm-messages-not-on-disk)
       (vm-set-buffer-modified-p t)
       (vm-clear-modification-flag-undos)
       (vm-check-for-killed-summary)
       (vm-assimilate-new-messages)
       (vm-update-summary-and-mode-line))))))

(defun mail-sent-via ()
  "Make a Sent-via header line from each To or CC header line."
  (interactive)
  (save-excursion
    ;; put a marker at the end of the header
    (let ((end (copy-marker (mail-header-end)))
	  (case-fold-search t)
	  to-line)
      (goto-char (point-min))
      ;; search for the To: lines and make Sent-via: lines from them
      ;; search for the next To: line
      (while (re-search-forward "^\\(to\\|cc\\):" end t)
	;; Grab this line plus all its continuations, sans the `to:'.
	(let ((to-line
	       (buffer-substring (point)
				 (progn
				   (if (re-search-forward "^[^ \t\n]" end t)
				       (backward-char 1)
				     (goto-char end))
				   (point)))))
	  ;; Insert a copy, with altered header field name.
	  (insert-before-markers "Sent-via:" to-line))))))

(defun mail-to ()
  "Move point to end of To-field."
  (interactive)
  (if (interactive-p) (expand-abbrev))  ; XEmacs: for mail-abbrevs
  (mail-position-on-field "To"))

(defun mail-subject ()
  "Move point to end of Subject-field."
  (interactive)
  (if (interactive-p) (expand-abbrev))  ; XEmacs: for mail-abbrevs
  (mail-position-on-field "Subject"))

(defun mail-cc ()
  "Move point to end of CC-field.  Create a CC field if none."
  (interactive)
  (if (interactive-p) (expand-abbrev))  ; XEmacs: for mail-abbrevs
  (or (mail-position-on-field "cc" t)
      (progn (mail-position-on-field "to")
	     (insert "\nCC: "))))

(defun mail-bcc ()
  "Move point to end of BCC-field.  Create a BCC field if none."
  (interactive)
  (if (interactive-p) (expand-abbrev))  ; XEmacs: for mail-abbrevs
  (or (mail-position-on-field "bcc" t)
      (progn (mail-position-on-field "to")
	     (insert "\nBCC: "))))

(defun mail-fcc (folder)
  "Add a new FCC field, with file name completion."
  (interactive "FFolder carbon copy: ")
  (if (interactive-p) (expand-abbrev))  ; XEmacs: for mail-abbrevs
  (or (mail-position-on-field "fcc" t)	;Put new field after exiting FCC.
      (mail-position-on-field "to"))
  (insert "\nFCC: " folder))

(defun mail-reply-to ()      
  "Move point to end of Reply-To-field.  Create a Reply-To field if none."
  (interactive)
  (if (interactive-p) (expand-abbrev))  ; XEmacs: for mail-abbrevs
  (mail-position-on-field "Reply-To"))

(defun mail-position-on-field (field &optional soft)
  (let (end
	(case-fold-search t))
    (setq end (mail-header-end))
    (goto-char (point-min))
    (if (re-search-forward (concat "^" (regexp-quote field) ":") end t)
	(progn
	  (re-search-forward "^[^ \t]" nil 'move)
	  (beginning-of-line)
	  (skip-chars-backward "\n")
	  t)
      (or soft
	  (progn (goto-char end)
		 (insert field ": \n")
		 (skip-chars-backward "\n")))
      nil)))

(defun mail-text ()
  "Move point to beginning of message text."
  (interactive)
  (if (interactive-p) (expand-abbrev))  ; XEmacs: for mail-abbrevs
  (goto-char (mail-text-start)))

(defun mail-signature (&optional atpoint)
  "Sign letter with contents of the file `mail-signature-file'.
Prefix arg means put contents at point."
  (interactive "P")
  (save-excursion
    (or atpoint
	(goto-char (point-max)))
    (skip-chars-backward " \t\n")
    (end-of-line)
    (or atpoint
        (delete-region (point) (point-max)))
    (insert "\n\n-- \n")
    (insert-file-contents (expand-file-name mail-signature-file))))

(defun mail-fill-yanked-message (&optional justifyp)
  "Fill the paragraphs of a message yanked into this one.
Numeric argument means justify as well."
  (interactive "P")
  (save-excursion
    (goto-char (mail-text-start))
    (fill-individual-paragraphs (point)
				(point-max)
				justifyp
				mail-citation-prefix-regexp)))

(defun mail-indent-citation ()
  "Modify text just inserted from a message to be cited.
The inserted text should be the region.
When this function returns, the region is again around the modified text.

Normally, indent each nonblank line `mail-indentation-spaces' spaces.
However, if `mail-yank-prefix' is non-nil, insert that prefix on each line."
  (mail-yank-clear-headers (region-beginning) (region-end))
  (if (null mail-yank-prefix)
      (indent-rigidly (region-beginning) (region-end)
		      mail-indentation-spaces)
    (save-excursion
      (let ((end (set-marker (make-marker) (region-end))))
	(goto-char (region-beginning))
	(while (< (point) end)
	  (insert mail-yank-prefix)
	  (forward-line 1))))))

(defun mail-yank-original (arg)
  "Insert the message being replied to, if any (in rmail).
Puts point after the text and mark before.
Normally, indents each nonblank line ARG spaces (default 3).
However, if `mail-yank-prefix' is non-nil, insert that prefix on each line.

Just \\[universal-argument] as argument means don't indent, insert no prefix,
and don't delete any header fields."
  (interactive "P")
  (if mail-reply-action
      (let ((start (point))
	    (original mail-reply-action))
	(and (consp original) (eq (car original) 'insert-buffer)
	     (setq original (nth 1 original)))
	(if (consp original)
	    (apply (car original) (cdr original))
	  ;; If the original message is in another window in the same frame,
	  ;; delete that window to save screen space.
	  ;; t means don't alter other frames.
	  (delete-windows-on original t)
	  (insert-buffer original)
	  (set-text-properties (point) (mark t) nil))
	(if (consp arg)
	    nil
	  (goto-char start)
	  (let ((mail-indentation-spaces (if arg (prefix-numeric-value arg)
					   mail-indentation-spaces))
		;; Avoid error in Transient Mark mode
		;; on account of mark's being inactive.
		(mark-even-if-inactive t))
	    (cond (mail-citation-hook
		   ;; Bind mail-citation-header to the inserted
		   ;; message's header.
		   (let ((mail-citation-header
			  (buffer-substring-no-properties
			   start
			   (save-excursion
			     (save-restriction
			       (narrow-to-region start (point-max))
			       (goto-char start)
			       (rfc822-goto-eoh)
			       (point))))))
		     (run-hooks 'mail-citation-hook)))
		  (mail-yank-hooks
		   (run-hooks 'mail-yank-hooks))
		  (t
		   (mail-indent-citation)))))
	;; This is like exchange-point-and-mark, but doesn't activate the mark.
	;; It is cleaner to avoid activation, even though the command
	;; loop would deactivate the mark because we inserted text.
	(goto-char (prog1 (mark t)
		     (set-marker (mark-marker) (point) (current-buffer))))
	(if (not (eolp)) (insert ?\n)))))

(defun mail-yank-clear-headers (start end)
  (if (< end start)
      (let (temp)
	(setq temp start start end end temp)))
  (if mail-yank-ignored-headers
      (save-excursion
	(goto-char start)
	(if (search-forward "\n\n" end t)
	    (save-restriction
	      (narrow-to-region start (point))
	      (goto-char start)
	      (while (let ((case-fold-search t))
		       (re-search-forward mail-yank-ignored-headers nil t))
		(beginning-of-line)
		(delete-region (point)
			       (progn (re-search-forward "\n[^ \t]")
				      (forward-char -1)
				      (point)))))))))

(defun mail-yank-region (arg)
  "Insert the selected region from the message being replied to.
Puts point after the text and mark before.
Normally, indents each nonblank line ARG spaces (default 3).
However, if `mail-yank-prefix' is non-nil, insert that prefix on each line.

Just \\[universal-argument] as argument means don't indent, insert no prefix,
and don't delete any header fields."
  (interactive "P")
  (and (consp mail-reply-action)
       (eq (car mail-reply-action) 'insert-buffer)
       (with-current-buffer (nth 1 mail-reply-action)
	 (or (mark t)
	     (error "No mark set: %S" (current-buffer))))
       (let ((buffer (nth 1 mail-reply-action))
	     (start (point))
	     ;; Avoid error in Transient Mark mode
	     ;; on account of mark's being inactive.
	     (mark-even-if-inactive t))
	 ;; Insert the citation text.
	 (insert (with-current-buffer buffer
		   (buffer-substring-no-properties (point) (mark))))
	 (push-mark start)
	 ;; Indent or otherwise annotate the citation text.
	 (if (consp arg)
	     nil
	   (let ((mail-indentation-spaces (if arg (prefix-numeric-value arg)
					    mail-indentation-spaces)))
	     (if mail-citation-hook
		 ;; Bind mail-citation-hook to the original message's header.
		 (let ((mail-citation-header
			(with-current-buffer buffer
			  (buffer-substring-no-properties
			   (point-min)
			   (save-excursion
			     (goto-char (point-min))
			     (rfc822-goto-eoh)
			     (point))))))
		   (run-hooks 'mail-citation-hook))
	       (if mail-yank-hooks
		   (run-hooks 'mail-yank-hooks)
		 (mail-indent-citation))))))))

(defun mail-attach-file (&optional file)
  "Insert a file at the end of the buffer, with separator lines around it."
  (interactive "fAttach file: ")
  (save-excursion
    (goto-char (point-max))
    (or (bolp) (newline))
    (newline)
    (let ((start (point))
	  middle)
      (insert (format "===File %s===" file))
      (insert-char ?= (max 0 (- 60 (current-column))))
      (newline)
      (setq middle (point))
      (insert "============================================================\n")
      (push-mark)
      (goto-char middle)
      (insert-file-contents file)
      (or (bolp) (newline))
      (goto-char start))))

;; Put these commands last, to reduce chance of lossage from quitting
;; in middle of loading the file.

;;;###autoload (add-hook 'same-window-buffer-names "*mail*")

;;;###autoload
(defun mail (&optional noerase to subject in-reply-to cc replybuffer actions)
  "Edit a message to be sent.  Prefix arg means resume editing (don't erase).
When this function returns, the buffer `*mail*' is selected.
The value is t if the message was newly initialized; otherwise, nil.

Optionally, the signature file `mail-signature-file' can be inserted at the
end; see the variable `mail-signature'.

\\<mail-mode-map>
While editing message, type \\[mail-send-and-exit] to send the message and exit.

Various special commands starting with C-c are available in sendmail mode
to move to message header fields:
\\{mail-mode-map}

If `mail-self-blind' is non-nil, a BCC to yourself is inserted
when the message is initialized.

If `mail-default-reply-to' is non-nil, it should be an address (a string);
a Reply-to: field with that address is inserted.

If `mail-archive-file-name' is non-nil, an FCC field with that file name
is inserted.

The normal hook `mail-setup-hook' is run after the message is
initialized.  It can add more default fields to the message.

When calling from a program, the first argument if non-nil says
not to erase the existing contents of the `*mail*' buffer.

The second through fifth arguments,
 TO, SUBJECT, IN-REPLY-TO and CC, specify if non-nil
 the initial contents of those header fields.
 These arguments should not have final newlines.
The sixth argument REPLYBUFFER is a buffer which contains an
 original message being replied to, or else an action
 of the form (FUNCTION . ARGS) which says how to insert the original.
 Or it can be nil, if not replying to anything.
The seventh argument ACTIONS is a list of actions to take
 if/when the message is sent.  Each action looks like (FUNCTION . ARGS);
 when the message is sent, we apply FUNCTION to ARGS.
 This is how Rmail arranges to mark messages `answered'."
  (interactive "P")
  (if mail-use-multiple-buffers-p
;;; This is commented out because I found it was confusing in practice.
;;; It is easy enough to rename *mail* by hand with rename-buffer
;;; if you want to have multiple mail buffers.
;;; And then you can control which messages to save. --rms.
;;; Put it back in, conditional on mail-use-multiple-buffers-p --jas
      (let ((index 1)
	    buffer)
	;; If requested, look for a mail buffer that is modified and go to it.
	(if noerase
	    (progn
	      (while (and (setq buffer
				(get-buffer (if (= 1 index) "*mail*"
					      (format "*mail*<%d>" index))))
			  (not (buffer-modified-p buffer)))
		(setq index (1+ index)))
	      (if buffer (switch-to-buffer buffer)
		;; If none exists, start a new message.
		;; This will never re-use an existing unmodified mail buffer
		;; (since index is not 1 anymore).  Perhaps it should.
		(setq noerase nil))))
	;; Unless we found a modified message and are happy, start a
	;; new message.
	(if (not noerase)
	    (progn
	      ;; Look for existing unmodified mail buffer.
	      (while (and (setq buffer
				(get-buffer (if (= 1 index) "*mail*"
					      (format "*mail*<%d>" index))))
			  (buffer-modified-p buffer))
		(setq index (1+ index)))
	      ;; If none, make a new one.
	      (or buffer
		  (setq buffer (generate-new-buffer "*mail*")))
	      ;; Go there and initialize it.
	      (switch-to-buffer buffer)
	      (erase-buffer)
	      (setq default-directory (expand-file-name "~/"))
	      (auto-save-mode auto-save-default)
	      (mail-mode)
	      (mail-setup to subject in-reply-to cc replybuffer actions)
	      (if (and buffer-auto-save-file-name
		       (file-exists-p buffer-auto-save-file-name))
		  (message "Auto save file for draft message exists; consider M-x mail-recover"))
	      t)))

    (pop-to-buffer "*mail*")
    ;; Put the auto-save file in the home dir
    ;; to avoid any danger that it can't be written.
    (if (file-exists-p (expand-file-name "~/"))
	(setq default-directory (expand-file-name "~/")))
    ;; Only call auto-save-mode if necessary, to avoid changing auto-save file.
    (if (or (and auto-save-default (not buffer-auto-save-file-name))
	    (and (not auto-save-default) buffer-auto-save-file-name))
	(auto-save-mode auto-save-default))
    (mail-mode)
    ;; Disconnect the buffer from its visited file
    ;; (in case the user has actually visited a file *mail*).
;  (set-visited-file-name nil)
    (let (initialized)
      (and (not noerase)
	 (if buffer-file-name
	     (if (buffer-modified-p)
		 (when (y-or-n-p "Buffer has unsaved changes; reinitialize it and discard them? ")
		   (if (y-or-n-p "Disconnect buffer from visited file? ")
		       (set-visited-file-name nil))
		   t)
	       (when (y-or-n-p "Reinitialize buffer, and disconnect it from the visited file? ")
		 (set-visited-file-name nil)
		 t))
	   ;; A non-file-visiting buffer.
	   (if (buffer-modified-p)
	       (y-or-n-p "Unsent message being composed; erase it? ")
	     t))
	 (let ((inhibit-read-only t))
	   (erase-buffer)
	   (mail-setup to subject in-reply-to cc replybuffer actions)
	   (setq initialized t)))
      (if (and buffer-auto-save-file-name
	       (file-exists-p buffer-auto-save-file-name))
	  (message "Auto save file for draft message exists; consider M-x mail-recover"))
      initialized)))

(defun mail-recover ()
  "Reread contents of current buffer from its last auto-save file."
  (interactive)
  (let ((file-name (make-auto-save-file-name)))
    (cond ((save-window-excursion
	     (if (not (eq system-type 'vax-vms))
		 (with-output-to-temp-buffer "*Directory*"
		   (buffer-disable-undo standard-output)
		   (let ((default-directory "/"))
		     (call-process
		      "ls" nil standard-output nil "-l" file-name))))
	     (yes-or-no-p (format "Recover auto save file %s? " file-name)))
	   (let ((buffer-read-only nil))
	     (erase-buffer)
	     (insert-file-contents file-name nil)))
	  (t (error "mail-recover cancelled")))))

;;;###autoload
(defun mail-other-window (&optional noerase to subject in-reply-to cc replybuffer sendactions)
  "Like `mail' command, but display mail buffer in another window."
  (interactive "P")
  (let ((pop-up-windows t)
	(special-display-buffer-names nil)
	(special-display-regexps nil)
	(same-window-buffer-names nil)
	(same-window-regexps nil))
    (pop-to-buffer "*mail*"))
  (mail noerase to subject in-reply-to cc replybuffer sendactions))

;;;###autoload
(defun mail-other-frame (&optional noerase to subject in-reply-to cc replybuffer sendactions)
  "Like `mail' command, but display mail buffer in another frame."
  (interactive "P")
  (let ((pop-up-frames t)
	(special-display-buffer-names nil)
	(special-display-regexps nil)
	(same-window-buffer-names nil)
	(same-window-regexps nil))
    (pop-to-buffer "*mail*"))
  (mail noerase to subject in-reply-to cc replybuffer sendactions))

;;; Do not add anything but external entries on this page.

(provide 'sendmail)

;;; sendmail.el ends here
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