Function: rmail-only-expunge

rmail-only-expunge is an interactive and byte-compiled function defined in rmail.el.gz.

Signature

(rmail-only-expunge &optional DONT-SHOW)

Documentation

Actually erase all deleted messages in the file.

Key Bindings

Source Code

;; Defined in /usr/src/emacs/lisp/mail/rmail.el.gz
(defun rmail-only-expunge (&optional dont-show)
  "Actually erase all deleted messages in the file."
  (interactive)
  (rmail-swap-buffers-maybe)
  (set-buffer rmail-buffer)
  (message "Expunging deleted messages...")
  ;; Discard all undo records for this buffer.
  (or (eq buffer-undo-list t)
      (setq buffer-undo-list nil))
  (rmail-maybe-set-message-counters)
  (let* ((omax (- (buffer-size) (point-max)))
	 (omin (- (buffer-size) (point-min)))
	 (opoint (if (and (> rmail-current-message 0)
			  (rmail-message-deleted-p rmail-current-message))
		     0
		   (if rmail-enable-mime
		       (with-current-buffer rmail-view-buffer
			 (- (point)(point-min)))
		     (- (point) (point-min)))))
	 (messages-head (cons (aref rmail-message-vector 0) nil))
	 (messages-tail messages-head)
	 ;; Don't make any undo records for the expunging.
	 (buffer-undo-list t)
	 (win))
    (unwind-protect
	(save-excursion
	  (widen)
	  (goto-char (point-min))
	  (let ((counter 0)
		(number 1)
		new-summary
		(new-msgref (list (list 0)))
		(buffer-read-only nil)
		(total rmail-total-messages)
		(new-message-number rmail-current-message)
		(messages rmail-message-vector)
		(deleted rmail-deleted-vector)
		(summary rmail-summary-vector))
	    (setq rmail-total-messages nil
		  rmail-current-message nil
		  rmail-message-vector nil
		  rmail-deleted-vector nil
		  rmail-summary-vector nil)

	    (while (<= number total)
	      (if (= (aref deleted number) ?D)
		  (progn
		    (delete-region (aref messages number)
				   (aref messages (1+ number)))
		    (move-marker (aref messages number) nil)
		    (if (> new-message-number counter)
			(setq new-message-number (1- new-message-number))))
		(setq counter (1+ counter))
		(setq messages-tail
		      (setcdr messages-tail
			      (cons (aref messages number) nil)))
		(setq new-summary
		      (cons (if (= counter number) (aref summary (1- number)))
			    new-summary))
		(setq new-msgref
		      (cons (aref rmail-msgref-vector number)
			    new-msgref))
		(setcar (car new-msgref) counter))
	      (if (zerop (% (setq number (1+ number)) 20))
		  (message "Expunging deleted messages...%d" number)))
	    (setq messages-tail
		  (setcdr messages-tail
			  (cons (aref messages number) nil)))
	    (setq rmail-current-message new-message-number
		  rmail-total-messages counter
		  rmail-message-vector (apply 'vector messages-head)
		  rmail-deleted-vector (make-string (1+ counter) ?\s)
		  rmail-summary-vector (vconcat (nreverse new-summary))
		  rmail-msgref-vector (apply 'vector (nreverse new-msgref))
		  win t)))
      (message "Expunging deleted messages...done")
      (if (not win)
	  (narrow-to-region (- (buffer-size) omin) (- (buffer-size) omax)))
      (if (not dont-show)
	  (rmail-show-message (min rmail-current-message rmail-total-messages)))
      (if rmail-enable-mime
	  (goto-char (+ (point-min) opoint))
	(goto-char (+ (point) opoint))))))