sendmail.el

早期freebsd实现

	  (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)))
			 ;; 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)
		  (goto-char (point-max))
		  (insert-buffer-substring curbuf beg end)))
	    ;; Else append to the file directly.
	    (write-region (point-min) (point-max) (car fcc-list) t)))
	(setq fcc-list (cdr fcc-list))))
    (kill-buffer tembuf)))

(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-signature ()
  "Sign letter with contents of ~/.signature file."
  (interactive)
  (save-excursion
    (goto-char (point-max))
    (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.
Indents each nonblank line ARG spaces (default 3).
Just \\[universal-argument] as argument means don't indent
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))
	  (indent-rigidly start (mark)
			  (if arg (prefix-numeric-value arg) 3)))
	(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.

(defun mail (&optional noerase to subject in-reply-to cc replybuffer)
  "Edit a message to be sent.  Argument means resume editing (don't erase).
Returns with message buffer selected; value t if message freshly initialized.
While editing message, type C-c C-c to send the message and exit.

Separate names of recipients with commas.

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."
  (interactive "P")
  (switch-to-buffer "*mail*")
  (setq default-directory (expand-file-name "~/"))
  (auto-save-mode auto-save-default)
  (mail-mode)
  (and (not noerase)
       (or (not (buffer-modified-p))
	   (y-or-n-p "Unsent message being composed; erase it? "))
       (progn (erase-buffer)
	      (mail-setup to subject in-reply-to cc replybuffer)
	      t)))

(defun mail-other-window (&optional noerase to subject in-reply-to cc replybuffer)
  "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))

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