Add a function for updating seen messages to the post-command-hook. This function calls a customizable (by eg defcustom) function with parameters the start and end of the current window and that function can decide what to mark read based on that and the current point.
Since this is in the post-command-hook it should get called after most user actions (exceptions include user resizing the window) so it should be possible to make sure the seen status gets updated whether the user uses notmuch commands like next-message or normal emacs commands like scroll-up. It removes all of the old mark read/seen points but introduces a simple example function that just marks the current message read if it is open. This function has one small subtlety: it makes sure it doesn't mark the same message read twice (in the same instance of the same buffer); otherwise the post-command-hook makes it impossible for a user to manually mark a message unread. This fixes the current bugs (imo) that closed messages can be marked read, and that opening a closed message does not mark it read. Another advantage of using the post-command-hook any programmatic use with point passing through a message will not mark it read. --- emacs/notmuch-show.el | 43 ++++++++++++++++++++++++++++--------------- 1 file changed, 28 insertions(+), 15 deletions(-) diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el index 10fc872..2620f84 100644 --- a/emacs/notmuch-show.el +++ b/emacs/notmuch-show.el @@ -222,6 +222,10 @@ (defcustom notmuch-show-mark-read-tags '("-unread") :type '(repeat string) :group 'notmuch-show) +(defcustom notmuch-show-mark-read-function #'notmuch-show-seen-current-message + "Function to control which messages are marked read." + :type 'function + :group 'notmuch-show) (defmacro with-current-notmuch-show-message (&rest body) "Evaluate body with current buffer set to the text of current message" @@ -1156,6 +1160,8 @@ (defun notmuch-show-build-buffer () (let ((inhibit-read-only t)) (notmuch-show-mode) + (add-hook 'post-command-hook #'notmuch-show-command-hook nil t) + ;; Don't track undo information for this buffer (set 'buffer-undo-list t) @@ -1544,6 +1550,23 @@ (defun notmuch-show-mark-read (&optional unread) (apply 'notmuch-show-tag-message (notmuch-tag-change-list notmuch-show-mark-read-tags unread)))) +(defun notmuch-show-seen-current-message (start end) + "Mark the current message read if it is open. + +We only mark it read once: if it is changed back then that is a +user decision and we should not override it." + (when (and (notmuch-show-message-visible-p) + (not (notmuch-show-get-prop :seen))) + (notmuch-show-mark-read) + (notmuch-show-set-prop :seen t))) + +(defun notmuch-show-command-hook () + (when (eq major-mode 'notmuch-show-mode) + ;; We need to redisplay to get window-start and window-end correct. + (redisplay) + (save-excursion + (funcall notmuch-show-mark-read-function (window-start) (window-end))))) + ;; Functions for getting attributes of several messages in the current ;; thread. @@ -1679,9 +1702,7 @@ (defun notmuch-show-next-message (&optional pop-at-end) thread, navigate to the next thread in the parent search buffer." (interactive "P") (if (notmuch-show-goto-message-next) - (progn - (notmuch-show-mark-read) - (notmuch-show-message-adjust)) + (notmuch-show-message-adjust) (if pop-at-end (notmuch-show-next-thread) (goto-char (point-max))))) @@ -1692,7 +1713,6 @@ (defun notmuch-show-previous-message () (if (= (point) (notmuch-show-message-top)) (notmuch-show-goto-message-previous) (notmuch-show-move-to-message-top)) - (notmuch-show-mark-read) (notmuch-show-message-adjust)) (defun notmuch-show-next-open-message (&optional pop-at-end) @@ -1707,9 +1727,7 @@ (defun notmuch-show-next-open-message (&optional pop-at-end) (while (and (setq r (notmuch-show-goto-message-next)) (not (notmuch-show-message-visible-p)))) (if r - (progn - (notmuch-show-mark-read) - (notmuch-show-message-adjust)) + (notmuch-show-message-adjust) (if pop-at-end (notmuch-show-next-thread) (goto-char (point-max)))) @@ -1722,9 +1740,7 @@ (defun notmuch-show-next-matching-message () (while (and (setq r (notmuch-show-goto-message-next)) (not (notmuch-show-get-prop :match)))) (if r - (progn - (notmuch-show-mark-read) - (notmuch-show-message-adjust)) + (notmuch-show-message-adjust) (goto-char (point-max))))) (defun notmuch-show-open-if-matched () @@ -1735,8 +1751,7 @@ (defun notmuch-show-open-if-matched () (defun notmuch-show-goto-first-wanted-message () "Move to the first open message and mark it read" (goto-char (point-min)) - (if (notmuch-show-message-visible-p) - (notmuch-show-mark-read) + (unless (notmuch-show-message-visible-p) (notmuch-show-next-open-message)) (when (eobp) ;; There are no matched non-excluded messages so open all matched @@ -1744,8 +1759,7 @@ (defun notmuch-show-goto-first-wanted-message () (notmuch-show-mapc 'notmuch-show-open-if-matched) (force-window-update) (goto-char (point-min)) - (if (notmuch-show-message-visible-p) - (notmuch-show-mark-read) + (unless (notmuch-show-message-visible-p) (notmuch-show-next-open-message)))) (defun notmuch-show-previous-open-message () @@ -1755,7 +1769,6 @@ (defun notmuch-show-previous-open-message () (notmuch-show-goto-message-previous) (notmuch-show-move-to-message-top)) (not (notmuch-show-message-visible-p)))) - (notmuch-show-mark-read) (notmuch-show-message-adjust)) (defun notmuch-show-view-raw-message () -- 1.7.10.4