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lisp/mail/sendmail.el

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+;; Mail sending commands for Emacs.
+;; Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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 1, or (at your option)
+;; any later version.
+
+;; GNU Emacs 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 Emacs; see the file COPYING.  If not, write to
+;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+(provide 'sendmail)
+
+;;;###autoload
+(defconst 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.")
+
+;;;###autoload
+(defconst 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.")
+
+;;;###autoload
+(defconst mail-yank-ignored-headers "^via:\\|^mail-from:\\|^origin:\\|^status:\\|^remailed\\|^received:\\|^message-id:\\|^summary-line:\\|^to:\\|^subject:\\|^in-reply-to:\\|^return-path:" "\
+Delete these headers from old message when it's inserted in a reply.")
+
+;; Useful to set in site-init.el
+;;;###autoload
+(defconst send-mail-function 'sendmail-send-it "\
+Function to call to send the current buffer as mail.
+The headers are be delimited by a line which is mail-header-separator.")
+
+;;;###autoload
+(defvar mail-header-separator "--text follows this line--" "\
+*Line used to separate headers from text in messages being composed.")
+
+;;;###autoload
+(defvar mail-archive-file-name nil "\
+*Name of file to write all outgoing messages in, or nil for none.
+Do not use an rmail file here!  Instead, use its inbox file.")
+
+;;;###autoload
+(defvar mail-aliases t "\
+Alias of mail address aliases,
+or t meaning should be initialized from .mailrc.")
+
+(defvar mail-default-reply-to nil
+  "*Address to insert as default Reply-to field of outgoing messages.")
+
+(defvar 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.")
+
+(defvar mail-yank-prefix nil
+  "*Prefix insert on lines of yanked message being replied to.
+nil means use indentation.")
+
+(defvar mail-abbrevs-loaded nil)
+(defvar mail-mode-map nil)
+
+(defvar 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 `~/.signature'.")
+
+(defvar mail-reply-buffer nil)
+(defvar mail-send-actions nil
+  "A list of actions to be performed upon successful sending of a message.")
+
+(defvar 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.")
+
+(defvar mail-mode-syntax-table nil
+  "Syntax table used while in mail mode.")
+
+(if (null mail-mode-syntax-table)
+    (progn
+     (setq mail-mode-syntax-table (copy-syntax-table text-mode-syntax-table))
+     (modify-syntax-entry ?% ". " mail-mode-syntax-table)))
+
+(autoload 'build-mail-aliases "mailalias"
+  "Read mail aliases from ~/.mailrc and set mail-aliases."
+  nil)
+
+(autoload 'expand-mail-aliases "mailalias"
+  "Expand all mail aliases in suitable header fields found between BEG and END.
+Suitable header fields are To, CC and BCC."
+  nil)
+
+(defun mail-setup (to subject in-reply-to cc replybuffer actions)
+  (setq mail-send-actions actions)
+  (if (eq mail-aliases t)
+      (progn
+	(setq mail-aliases nil)
+	(if (file-exists-p "~/.mailrc")
+	    (build-mail-aliases))))
+  (setq mail-reply-buffer replybuffer)
+  (goto-char (point-min))
+  (insert "To: ")
+  (save-excursion
+    (if to
+	(progn
+	  (insert to "\n")
+	  ;;; 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"))
+	    (fill-region (point-min) (point-max))))
+      (newline))
+    (if cc
+	(let ((opos (point))
+	      (fill-prefix "\t"))
+	  (insert "CC: " cc "\n")
+	  (fill-region-as-paragraph opos (point-max))))
+    (if in-reply-to
+	(insert "In-reply-to: " in-reply-to "\n"))
+    (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"))
+    (if mail-archive-file-name
+	(insert "FCC: " mail-archive-file-name "\n"))
+    (insert mail-header-separator "\n")
+    ;; Read the .signature file if we haven't already done so
+    ;; (and if the user has not overridden it).
+    (cond ((eq mail-signature t)
+	   (insert "--\n")
+	   (insert-file-contents "~/.signature"))
+	  (mail-signature
+	   (insert mail-signature)))
+    (goto-char (point-max))
+    (or (bolp) (newline)))
+  (if to (goto-char (point-max)))
+  (or to subject in-reply-to
+      (set-buffer-modified-p nil))
+  (run-hooks 'mail-setup-hook))
+
+;;;###autoload
+(defun mail-mode ()
+  "Major mode for editing mail to be sent.
+Like Text Mode but with these additional commands:
+C-c C-s  mail-send (send the message)    C-c C-c  mail-send-and-exit
+C-c C-f  move to a header field (and create it if there isn't):
+	 C-c C-f C-t  move to To:	C-c C-f C-s  move to Subj:
+	 C-c C-f C-b  move to BCC:	C-c C-f C-c  move to CC:
+C-c C-t  move to message text.
+C-c C-y  mail-yank-original (insert current message, in Rmail).
+C-c C-q  mail-fill-yanked-message (fill what was yanked).
+C-c C-v  mail-sent-via (add a sent-via field for each To or CC)."
+  (interactive)
+  (kill-all-local-variables)
+  (make-local-variable 'mail-reply-buffer)
+  (setq mail-reply-buffer nil)
+  (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)
+  (make-local-variable 'paragraph-separate)
+  (make-local-variable 'paragraph-start)
+  (setq paragraph-start (concat "^" mail-header-separator
+				"$\\|^[ \t]*[-_][-_][-_]+$\\|"
+				paragraph-start))
+  (setq paragraph-separate (concat "^" mail-header-separator
+				   "$\\|^[ \t]*[-_][-_][-_]+$\\|"
+				   paragraph-separate))
+  (run-hooks 'text-mode-hook 'mail-mode-hook))
+
+(if mail-mode-map
+    nil
+  (setq mail-mode-map (nconc (make-sparse-keymap) text-mode-map))
+  (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-c" 'mail-cc)
+  (define-key mail-mode-map "\C-c\C-f\C-s" 'mail-subject)
+  (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-q" 'mail-fill-yanked-message)
+  (define-key mail-mode-map "\C-c\C-w" 'mail-signature)
+  (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))
+
+(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)
+  (bury-buffer (current-buffer))
+  (if (or (one-window-p) arg)
+      (switch-to-buffer (other-buffer (current-buffer)))
+    (delete-window)))
+
+(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 (or (buffer-modified-p)
+          (y-or-n-p "Message already sent; resend? "))
+      (progn
+	(message "Sending...")
+	(run-hooks 'mail-send-hook)
+	(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)))
+	(set-buffer-modified-p nil)
+	(delete-auto-save-file-if-necessary t)
+	(message "Sending...done"))))
+
+(defun sendmail-send-it ()
+  (let ((errbuf (if mail-interactive
+		    (generate-new-buffer " sendmail errors")
+		  0))
+	(tembuf (generate-new-buffer " sendmail temp"))
+	(case-fold-search nil)
+	delimline
+	(mailbuf (current-buffer)))
+    (unwind-protect
+	(save-excursion
+	  (set-buffer tembuf)
+	  (erase-buffer)
+	  (insert-buffer-substring mailbuf)
+	  (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 (point-min))
+	  (re-search-forward
+	    (concat "^" (regexp-quote mail-header-separator) "\n"))
+	  (replace-match "\n")
+	  (backward-char 1)
+	  (setq delimline (point-marker))
+	  (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"))
+	  (let ((case-fold-search t))
+	    (goto-char (point-min))
+	    (if (re-search-forward "^Sender:" delimline t)
+		(error "Sender may not be specified."))
+	    ;; Find and handle any FCC fields.
+	    (goto-char (point-min))
+	    (if (re-search-forward "^FCC:" delimline t)
+		(mail-do-fcc delimline))
+	    ;; 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")))
+	    ;; "S:" is an abbreviation for "Subject:".
+	    (goto-char (point-min))
+	    (if (re-search-forward "^S:" delimline t)
+		(replace-match "Subject:"))
+	    ;; Don't send out a blank subject line
+	    (goto-char (point-min))
+	    (if (re-search-forward "^Subject:[ \t]*\n" delimline t)
+		(replace-match ""))
+	    (if mail-interactive
+		(save-excursion
+		  (set-buffer errbuf)
+		  (erase-buffer))))
+	  (apply 'call-process-region
+		 (append (list (point-min) (point-max)
+			       (if (boundp 'sendmail-program)
+				   sendmail-program
+				 "/usr/lib/sendmail")
+			       nil errbuf nil
+			       "-oi" "-t")
+			 ;; Always specify who from,
+			 ;; since some systems have broken sendmails.
+			 (list "-f" (user-login-name))
+;;;			 ;; 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)))
+			 ;; These mean "report errors by mail"
+			 ;; and "deliver in background".
+			 (if (null mail-interactive) '("-oem" "-odb"))))
+	  (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)))))
+
+(defun mail-do-fcc (header-end)
+  (let (fcc-list
+	(rmailbuf (current-buffer))
+	(tembuf (generate-new-buffer " rmail output"))
+	(case-fold-search t))
+    (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)
+      (insert "\nFrom " (user-login-name) " "
+	      (current-time-string) "\n")
+      (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 (get-file-buffer (car fcc-list))))
+	  (if buffer
+	      ;; File is present in a buffer => append to that buffer.
+	      (let ((curbuf (current-buffer))
+		    (beg (point-min)) (end (point-max)))
+		(save-excursion
+		  (set-buffer 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
+			(progn
+			  (narrow-to-region (point-min) (1+ (buffer-size)))
+			  (goto-char (point-max))
+			  (if (eq major-mode 'rmail-mode)
+			      ;; Append as a message to an RMAIL file
+			      (let ((buffer-read-only nil))
+				;; This forces RMAIL's message counters to be
+				;; recomputed when the next RMAIL operation is
+				;; done on the buffer.
+				;; See rmail-maybe-set-message-counters.
+				(setq rmail-total-messages nil)
+				(insert "\C-l\n0, unseen,,\n*** EOOH ***\n"
+					"From: " (user-login-name) "\n"
+					"Date: " (current-time-string) "\n")
+				(insert-buffer-substring curbuf beg end)
+				(insert "\n\C-_"))
+			    (insert-buffer-substring curbuf beg end)))
+		      (if max (narrow-to-region (point-min) max))))))
+	    ;; Else append to the file directly.
+	    (write-region
+	     ;; Include a blank line before if file already exists.
+	     (if (file-exists-p (car fcc-list)) (point-min) (1+ (point-min)))
+	     (point-max) (car fcc-list) t)))
+	(setq fcc-list (cdr fcc-list))))
+    (kill-buffer tembuf)))
+
+(defun mail-sent-via ()
+  "Make a Sent-via header line from each To or CC header line."
+  (interactive)
+  (save-excursion
+    (goto-char (point-min))
+    ;; find the header-separator
+    (search-forward (concat "\n" mail-header-separator "\n"))
+    (forward-line -1)
+    ;; put a marker at the end of the header
+    (let ((end (point-marker))
+	  (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)
+  (expand-abbrev)
+  (mail-position-on-field "To"))
+
+(defun mail-subject ()
+  "Move point to end of Subject-field."
+  (interactive)
+  (expand-abbrev)
+  (mail-position-on-field "Subject"))
+
+(defun mail-cc ()
+  "Move point to end of CC-field.  Create a CC field if none."
+  (interactive)
+  (expand-abbrev)
+  (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)
+  (expand-abbrev)
+  (or (mail-position-on-field "bcc" t)
+      (progn (mail-position-on-field "to")
+	     (insert "\nBCC: "))))
+
+(defun mail-position-on-field (field &optional soft)
+  (let (end
+	(case-fold-search t))
+    (goto-char (point-min))
+    (search-forward (concat "\n" mail-header-separator "\n"))
+    (setq end (match-beginning 0))
+    (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)
+		 (skip-chars-backward "\n")
+		 (insert "\n" field ": ")))
+      nil)))
+
+(defun mail-text ()
+  "Move point to beginning of text field."
+  (interactive)
+  (goto-char (point-min))
+  (search-forward (concat "\n" mail-header-separator "\n")))
+
+(defun mail-signature ()
+  "Sign letter with contents of ~/.signature file."
+  (interactive)
+  (save-excursion
+    (goto-char (point-max))
+    (skip-chars-backward " \t\n")
+    (end-of-line)
+    (delete-region (point) (point-max))
+    (insert "\n\n--\n")
+    (insert-file-contents (expand-file-name "~/.signature"))))
+
+(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 (point-min))
+    (search-forward (concat "\n" mail-header-separator "\n") nil t)
+    (fill-individual-paragraphs (point)
+				(point-max)
+				justifyp
+				t)))
+
+(defun mail-yank-original (arg)
+  "Insert the message being replied to, if any (in rmail).
+Puts point before the text and mark after.
+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-buffer
+      (let ((start (point)))
+	(delete-windows-on mail-reply-buffer)
+	(insert-buffer mail-reply-buffer)
+	(if (consp arg)
+	    nil
+	  (mail-yank-clear-headers start (mark))
+	  (if (null mail-yank-prefix)
+	      (indent-rigidly start (mark)
+			      (if arg (prefix-numeric-value arg) 3))
+	    (save-excursion
+	      (goto-char start)
+	      (while (< (point) (mark))
+		(insert mail-yank-prefix)
+		(forward-line 1)))))
+	(exchange-point-and-mark)
+	(if (not (eolp)) (insert ?\n)))))
+
+(defun mail-yank-clear-headers (start end)
+  (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))))))))
+
+;; Put these last, to reduce chance of lossage from quitting in middle of loading the file.
+
+;;;###autoload
+(defun mail (&optional noerase to subject in-reply-to cc replybuffer actions)
+  "Edit a message to be sent.  Argument means resume editing (don't erase).
+Search for an existing mail buffer currently not in use and initialize it,
+or make a new one if all existing mail buffers are busy.
+With an argument, search for a busy existing mail buffer and re-select it.
+
+Returns with message buffer selected; value t if message freshly initialized.
+By default, the signature file `~/.signature' is 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.
+
+If `mail-setup-hook' is bound, its value is called with no arguments
+after the message is initialized.  It can add more default fields.
+
+When calling from a program, 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 whose contents
+ should be yanked if the user types C-c C-y.
+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")
+  (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))))
+
+;;;###autoload
+(define-key ctl-x-map "m" 'mail)
+
+(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)
+		   (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))
+    (pop-to-buffer "*mail*"))
+  (mail noerase to subject in-reply-to cc replybuffer sendactions))
+
+;;;###autoload
+(defun mail-other-screen (&optional noerase to subject in-reply-to cc replybuffer sendactions)
+  "Like `mail' command, but display mail buffer in another screen."
+  (interactive "P")
+  (let ((pop-up-screens t))
+    (pop-to-buffer "*mail*"))
+  (mail noerase to subject in-reply-to cc replybuffer sendactions))
+
+
+;;;###autoload
+(define-key ctl-x-4-map "m" 'mail-other-window)
+
+;;;###autoload
+(define-key ctl-x-3-map "m" 'mail-other-screen)
+
+
+;;; Do not add anything but external entries on this page.