(defvar rmail-buffer)
(defvar rmail-current-message)
(defvar rmail-last-label)
(defvar rmail-last-multi-labels)
(defvar rmail-summary-vector)
(defvar rmail-total-messages)
(defvar rmail-label-obarray (make-vector 47 0))
(defconst rmail-attributes
(cons 'rmail-keywords
(mapcar (function (lambda (s) (intern s rmail-label-obarray)))
'("deleted" "answered" "filed" "forwarded" "unseen" "edited"
"resent"))))
(defconst rmail-deleted-label (intern "deleted" rmail-label-obarray))
(defvar rmail-keywords)
(defun rmail-add-label (string)
"Add LABEL to labels associated with current RMAIL message.
Completion is performed over known labels when reading."
(interactive (list (rmail-read-label "Add label")))
(rmail-set-label string t))
(defun rmail-kill-label (string)
"Remove LABEL from labels associated with current RMAIL message.
Completion is performed over known labels when reading."
(interactive (list (rmail-read-label "Remove label")))
(rmail-set-label string nil))
(defun rmail-read-label (prompt)
(with-current-buffer rmail-buffer
(if (not rmail-keywords) (rmail-parse-file-keywords))
(let ((result
(completing-read (concat prompt
(if rmail-last-label
(concat " (default "
(symbol-name rmail-last-label)
"): ")
": "))
rmail-label-obarray
nil
nil)))
(if (string= result "")
rmail-last-label
(setq rmail-last-label (rmail-make-label result t))))))
(defun rmail-set-label (l state &optional n)
(with-current-buffer rmail-buffer
(rmail-maybe-set-message-counters)
(if (not n) (setq n rmail-current-message))
(aset rmail-summary-vector (1- n) nil)
(let* ((attribute (rmail-attribute-p l))
(keyword (and (not attribute)
(or (rmail-keyword-p l)
(rmail-install-keyword l))))
(label (or attribute keyword)))
(if label
(let ((omax (- (buffer-size) (point-max)))
(omin (- (buffer-size) (point-min)))
(buffer-read-only nil)
(case-fold-search t))
(unwind-protect
(save-excursion
(widen)
(goto-char (rmail-msgbeg n))
(forward-line 1)
(if (not (looking-at "[01],"))
nil
(let ((start (1+ (point)))
(bound))
(narrow-to-region (point) (progn (end-of-line) (point)))
(setq bound (point-max))
(search-backward ",," nil t)
(if attribute
(setq bound (1+ (point)))
(setq start (1+ (point))))
(goto-char start)
(if (re-search-forward
(concat ", " (rmail-quote-label-name label) ",")
bound
'move)
(if (not state) (replace-match ","))
(if state (insert " " (symbol-name label) ",")))
(if (eq label rmail-deleted-label)
(rmail-set-message-deleted-p n state)))))
(narrow-to-region (- (buffer-size) omin) (- (buffer-size) omax))
(if (= n rmail-current-message) (rmail-display-labels))))))))
(defun rmail-attribute-p (s)
(let ((symbol (rmail-make-label s)))
(if (memq symbol (cdr rmail-attributes)) symbol)))
(defun rmail-keyword-p (s)
(let ((symbol (rmail-make-label s)))
(if (memq symbol (cdr (rmail-keywords))) symbol)))
(defun rmail-make-label (s &optional forcep)
(cond ((symbolp s) s)
(forcep (intern (downcase s) rmail-label-obarray))
(t (intern-soft (downcase s) rmail-label-obarray))))
(defun rmail-force-make-label (s)
(intern (downcase s) rmail-label-obarray))
(defun rmail-quote-label-name (label)
(regexp-quote (symbol-name (rmail-make-label label t))))
(defun rmail-previous-labeled-message (n labels)
"Show previous message with one of the labels LABELS.
LABELS should be a comma-separated list of label names.
If LABELS is empty, the last set of labels specified is used.
With prefix argument N moves backward N messages with these labels."
(interactive "p\nsMove to previous msg with labels: ")
(rmail-next-labeled-message (- n) labels))
(defun rmail-next-labeled-message (n labels)
"Show next message with one of the labels LABELS.
LABELS should be a comma-separated list of label names.
If LABELS is empty, the last set of labels specified is used.
With prefix argument N moves forward N messages with these labels."
(interactive "p\nsMove to next msg with labels: ")
(if (string= labels "")
(setq labels rmail-last-multi-labels))
(or labels
(error "No labels to find have been specified previously"))
(set-buffer rmail-buffer)
(setq rmail-last-multi-labels labels)
(rmail-maybe-set-message-counters)
(let ((lastwin rmail-current-message)
(current rmail-current-message)
(regexp (concat ", ?\\("
(mail-comma-list-regexp labels)
"\\),")))
(save-restriction
(widen)
(while (and (> n 0) (< current rmail-total-messages))
(setq current (1+ current))
(if (rmail-message-labels-p current regexp)
(setq lastwin current n (1- n))))
(while (and (< n 0) (> current 1))
(setq current (1- current))
(if (rmail-message-labels-p current regexp)
(setq lastwin current n (1+ n)))))
(rmail-show-message lastwin)
(if (< n 0)
(message "No previous message with labels %s" labels))
(if (> n 0)
(message "No following message with labels %s" labels))))
(defun rmail-keywords ()
(or rmail-keywords (rmail-parse-file-keywords)))
(defun rmail-parse-file-keywords ()
(save-restriction
(save-excursion
(widen)
(goto-char 1)
(setq rmail-keywords
(if (search-forward "\nLabels:" (rmail-msgbeg 1) t)
(progn
(narrow-to-region (point) (progn (end-of-line) (point)))
(goto-char (point-min))
(cons 'rmail-keywords
(mapcar 'rmail-force-make-label
(mail-parse-comma-list)))))))))
(defun rmail-install-keyword (word)
(let ((keyword (rmail-make-label word t))
(keywords (rmail-keywords)))
(if (not (or (rmail-attribute-p keyword)
(rmail-keyword-p keyword)))
(let ((omin (- (buffer-size) (point-min)))
(omax (- (buffer-size) (point-max))))
(unwind-protect
(save-excursion
(widen)
(goto-char 1)
(let ((case-fold-search t)
(buffer-read-only nil))
(or (search-forward "\nLabels:" nil t)
(progn
(end-of-line)
(insert "\nLabels:")))
(delete-region (point) (progn (end-of-line) (point)))
(setcdr keywords (cons keyword (cdr keywords)))
(while (setq keywords (cdr keywords))
(insert (symbol-name (car keywords)) ","))
(delete-char -1)))
(narrow-to-region (- (buffer-size) omin)
(- (buffer-size) omax)))))
keyword))