(require 'mailalias)
(require 'sendmail)
(defun post-mail-send-it ()
"The MH -post interface for `rmail-mail' to call.
To use it, include \"(setq send-mail-function 'post-mail-send-it)\" in
site-init."
(let ((errbuf (if mail-interactive
(generate-new-buffer " post-mail errors")
0))
temfile
(tembuf (generate-new-buffer " post-mail 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))
(or (= (preceding-char) ?\n)
(insert ?\n))
(mail-sendmail-undelimit-header)
(setq delimline (point-marker))
(if mail-aliases
(expand-mail-aliases (point-min) delimline))
(goto-char (point-min))
(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 "^FCC:" delimline t)
(mail-do-fcc delimline))
(goto-char (point-min))
(and (re-search-forward "^From:" delimline t)
(not (save-excursion
(goto-char (point-min))
(re-search-forward "^Sender:" delimline t)))
(progn
(forward-line 1)
(insert "Sender: " (user-login-name) "\n")))
(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))))
(let ((m (default-file-modes)))
(unwind-protect
(progn
(set-default-file-modes 384)
(setq temfile (make-temp-file ",rpost")))
(set-default-file-modes m)))
(apply 'call-process
(append (list (if (boundp 'post-mail-program)
post-mail-program
"/usr/uci/lib/mh/post")
nil errbuf nil
"-nofilter" "-msgid")
(if mail-interactive '("-watch") '("-nowatch"))
(list temfile)))
(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)
(switch-to-buffer errbuf)))))
(provide 'mailpost)