+(defvar notmuch-show-mode-map
+ (let ((map (make-sparse-keymap)))
+ ; I don't actually want all of these toggle commands occupying
+ ; keybindings. They steal valuable key-binding space, are hard
+ ; to remember, and act globally rather than locally.
+ ;
+ ; Will be much preferable to switch to direct manipulation for
+ ; toggling visibility of these components. Probably using
+ ; overlays-at to query and manipulate the current overlay.
+ (define-key map "a" 'notmuch-show-archive-thread)
+ (define-key map "b" 'notmuch-show-toggle-body-read-visible)
+ (define-key map "c" 'notmuch-show-toggle-citations-visible)
+ (define-key map "h" 'notmuch-show-toggle-headers-visible)
+ (define-key map "n" 'notmuch-show-next-message)
+ (define-key map "p" 'notmuch-show-previous-message)
+ (define-key map "q" 'kill-this-buffer)
+ (define-key map "s" 'notmuch-show-toggle-signatures-visible)
+ (define-key map "x" 'kill-this-buffer)
+ (define-key map "+" 'notmuch-show-add-tag)
+ (define-key map "-" 'notmuch-show-remove-tag)
+ (define-key map " " 'notmuch-show-advance-marking-read-and-archiving)
+ map)
+ "Keymap for \"notmuch show\" buffers.")
+(fset 'notmuch-show-mode-map notmuch-show-mode-map)
+
+(defvar notmuch-show-message-begin-regexp "\fmessage{")
+(defvar notmuch-show-message-end-regexp "\fmessage}")
+(defvar notmuch-show-header-begin-regexp "\fheader{")
+(defvar notmuch-show-header-end-regexp "\fheader}")
+(defvar notmuch-show-body-begin-regexp "\fbody{")
+(defvar notmuch-show-body-end-regexp "\fbody}")
+(defvar notmuch-show-attachment-begin-regexp "\fattachment{")
+(defvar notmuch-show-attachment-end-regexp "\fattachment}")
+(defvar notmuch-show-part-begin-regexp "\fpart{")
+(defvar notmuch-show-part-end-regexp "\fpart}")
+(defvar notmuch-show-marker-regexp "\f\\(message\\|header\\|body\\|attachment\\|part\\)[{}].*$")
+
+(defvar notmuch-show-id-regexp "ID: \\(.*\\)$")
+(defvar notmuch-show-tags-regexp "(\\([^)]*\\))$")
+
+(defun notmuch-show-get-message-id ()
+ (save-excursion
+ (beginning-of-line)
+ (if (not (looking-at notmuch-show-message-begin-regexp))
+ (re-search-backward notmuch-show-message-begin-regexp))
+ (re-search-forward notmuch-show-id-regexp)
+ (buffer-substring (match-beginning 1) (match-end 1))))
+
+(defun notmuch-show-set-tags (tags)
+ (save-excursion
+ (beginning-of-line)
+ (if (not (looking-at notmuch-show-message-begin-regexp))
+ (re-search-backward notmuch-show-message-begin-regexp))
+ (re-search-forward notmuch-show-tags-regexp)
+ (let ((inhibit-read-only t)
+ (beg (match-beginning 1))
+ (end (match-end 1)))
+ (delete-region beg end)
+ (goto-char beg)
+ (insert (mapconcat 'identity tags " ")))))
+
+(defun notmuch-show-get-tags ()
+ (save-excursion
+ (beginning-of-line)
+ (if (not (looking-at notmuch-show-message-begin-regexp))
+ (re-search-backward notmuch-show-message-begin-regexp))
+ (re-search-forward notmuch-show-tags-regexp)
+ (split-string (buffer-substring (match-beginning 1) (match-end 1)))))
+
+(defun notmuch-show-add-tag (tag)
+ (interactive "sTag to add: ")
+ (notmuch-call-notmuch-process "tag" (concat "+" tag) (concat "id:" (notmuch-show-get-message-id)))
+ (notmuch-show-set-tags (delete-dups (sort (cons tag (notmuch-show-get-tags)) 'string<))))
+
+(defun notmuch-show-remove-tag (tag)
+ (interactive "sTag to remove: ")
+ (let ((tags (notmuch-show-get-tags)))
+ (if (member tag tags)
+ (progn
+ (notmuch-call-notmuch-process "tag" (concat "-" tag) (concat "id:" (notmuch-show-get-message-id)))
+ (notmuch-show-set-tags (delete tag tags))))))
+
+(defun notmuch-show-archive-thread ()
+ "Archive each message in thread, and show next thread from search.
+
+Archive each message currrently shown by removing the \"inbox\"
+tag from each. Then kill this buffer and show the next thread
+from the search from which this thread was originally shown.
+
+Note: This command is safe from any race condition of new messages
+being delivered to the same thread. It does not archive the
+entire thread, but only the messages shown in the current
+buffer."
+ (interactive)
+ (save-excursion
+ (goto-char (point-min))
+ (while (not (eobp))
+ (notmuch-show-remove-tag "inbox")
+ (if (not (eobp))
+ (forward-char))
+ (if (not (re-search-forward notmuch-show-message-begin-regexp nil t))
+ (goto-char (point-max)))))
+ (let ((parent-buffer notmuch-show-parent-buffer))
+ (kill-this-buffer)
+ (if parent-buffer
+ (progn
+ (switch-to-buffer parent-buffer)
+ (notmuch-search-show-thread)))))
+
+(defun notmuch-show-move-to-current-message-summary-line ()
+ "Move to the beginning of the one-line summary of the current message.
+
+This gives us a stable place to move to and work from since the
+summary line is always visible. This is important since moving to
+an invisible location is unreliable, (the main command loop moves
+point either forward or backward to the next visible character
+when a command ends with point on an invisible character).
+
+Emits an error if point is not within a valid message, (that is
+not pattern of `notmuch-show-message-begin-regexp' could be found
+by searching backward)."
+ (beginning-of-line)
+ (if (not (looking-at notmuch-show-message-begin-regexp))
+ (if (re-search-backward notmuch-show-message-begin-regexp nil t)
+ (forward-line 2)
+ (error "Not within a valid message."))
+ (forward-line 2)))
+
+(defun notmuch-show-next-message ()
+ "Advance to the beginning of the next message in the buffer.
+
+Moves to the end of the buffer if already on the last message in
+the buffer."
+ (interactive)
+ (notmuch-show-move-to-current-message-summary-line)
+ (if (re-search-forward notmuch-show-message-begin-regexp nil t)
+ (notmuch-show-move-to-current-message-summary-line)
+ (goto-char (point-max)))
+ (recenter 0))
+
+(defun notmuch-show-find-next-message ()
+ "Returns the position of the next message in the buffer.
+
+Or the end of the buffer if already within the last message in
+the buffer."
+ ; save-excursion doesn't save our window position
+ ; save-window-excursion doesn't save point
+ ; Looks like we have to use both.
+ (save-excursion
+ (save-window-excursion
+ (notmuch-show-next-message)
+ (point))))
+
+(defun notmuch-show-next-unread-message ()
+ "Advance to the beginning of the next unread message in the buffer.
+
+Moves to the end of the buffer if there are no more unread
+messages past the current point."
+ (while (and (not (eobp))
+ (not (member "unread" (notmuch-show-get-tags))))
+ (notmuch-show-next-message)))
+
+(defun notmuch-show-find-next-unread-message ()
+ "Returns the position of the next message in the buffer.
+
+Or the end of the buffer if there are no more unread messages
+past the current point."
+ ; save-excursion doesn't save our window position
+ ; save-window-excursion doesn't save point
+ ; Looks like we have to use both.
+ (save-excursion
+ (save-window-excursion
+ (notmuch-show-next-unread-message)
+ (point))))
+
+(defun notmuch-show-previous-message ()
+ "Backup to the beginning of the previous message in the buffer.
+
+If within a message rather than at the beginning of it, then
+simply move to the beginning of the current message."
+ (interactive)
+ (let ((start (point)))
+ (notmuch-show-move-to-current-message-summary-line)
+ (if (not (< (point) start))
+ ; Go backward twice to skip the current message's marker
+ (progn
+ (re-search-backward notmuch-show-message-begin-regexp nil t)
+ (re-search-backward notmuch-show-message-begin-regexp nil t)
+ (notmuch-show-move-to-current-message-summary-line)
+ ))
+ (recenter 0)))
+
+(defun notmuch-show-mark-read-then-next-unread-message ()
+ "Remove unread tag from current message, then advance to next unread message."
+ (interactive)
+ (notmuch-show-remove-tag "unread")
+ (notmuch-show-next-unread-message))
+
+(defun notmuch-show-advance-marking-read-and-archiving ()
+ "Advance through buffer, marking read and archiving.
+
+This command is intended to be one of the simplest ways to
+process a thread of email. It does the following:
+
+If the current message in the thread is not yet fully visible,
+scroll by a near screenful to read more of the message.
+
+Otherwise, (the end of the current message is already within the
+current window), remove the \"unread\" tag from the current
+message and advance to the next message.
+
+Finally, if there is no further message to advance to, and this
+last message is already read, then archive the entire current
+thread, (remove the \"inbox\" tag from each message). Also kill
+this buffer, and display the next thread from the search from
+which this thread was originally shown."
+ (interactive)
+ (let ((next (notmuch-show-find-next-unread-message))
+ (unread (member "unread" (notmuch-show-get-tags))))
+ (if (and (not unread)
+ (equal next (point)))
+ (notmuch-show-archive-thread)
+ (if (and (> next (window-end))
+ (< next (point-max)))
+ (scroll-up nil)
+ (notmuch-show-mark-read-then-next-unread-message)))))
+
+(defun notmuch-show-markup-citations-region (beg end)
+ (goto-char beg)
+ (beginning-of-line)
+ (while (< (point) end)
+ (let ((beg-sub (point)))
+ (if (looking-at ">")
+ (progn
+ (while (looking-at ">")
+ (next-line))
+ (let ((overlay (make-overlay beg-sub (point))))
+ (overlay-put overlay 'invisible 'notmuch-show-citation)
+ (overlay-put overlay 'before-string
+ (concat "[" (number-to-string (count-lines beg-sub (point)))
+ " quoted lines.]")))))
+ (if (looking-at "--[ ]?$")
+ (let ((overlay (make-overlay beg-sub end)))
+ (overlay-put overlay 'invisible 'notmuch-show-signature)
+ (overlay-put overlay 'before-string
+ (concat "[" (number-to-string (count-lines beg-sub (point)))
+ "-line signature.]"))
+ (goto-char end)))
+ (next-line))))
+
+(defun notmuch-show-markup-body ()
+ (re-search-forward notmuch-show-body-begin-regexp)
+ (next-line 1)
+ (beginning-of-line)
+ (let ((beg (point)))
+ (re-search-forward notmuch-show-body-end-regexp)
+ (let ((end (match-beginning 0)))
+ (notmuch-show-markup-citations-region beg end)
+ (if (not (member "unread" (notmuch-show-get-tags)))
+ (overlay-put (make-overlay beg end)
+ 'invisible 'notmuch-show-body-read)))))
+
+(defun notmuch-show-markup-header ()
+ (re-search-forward notmuch-show-header-begin-regexp)
+ (next-line 2)
+ (beginning-of-line)
+ (let ((beg (point)))
+ (re-search-forward notmuch-show-header-end-regexp)
+ (overlay-put (make-overlay beg (match-beginning 0))
+ 'invisible 'notmuch-show-header)))
+
+(defun notmuch-show-markup-message ()
+ (if (re-search-forward notmuch-show-message-begin-regexp nil t)
+ (progn
+ (notmuch-show-markup-header)
+ (notmuch-show-markup-body))
+ (goto-char (point-max))))
+
+(defun notmuch-show-hide-markers ()
+ (save-excursion
+ (goto-char (point-min))
+ (while (not (eobp))
+ (if (re-search-forward notmuch-show-marker-regexp nil t)
+ (progn
+ (overlay-put (make-overlay (match-beginning 0) (+ (match-end 0) 1))
+ 'invisible 'notmuch-show-marker))
+ (goto-char (point-max))))))
+
+(defun notmuch-show-markup-messages ()
+ (save-excursion
+ (goto-char (point-min))
+ (while (not (eobp))
+ (notmuch-show-markup-message)))
+ (notmuch-show-hide-markers))
+
+(defun notmuch-show-toggle-citations-visible ()
+ "Toggle visibility of citations"
+ (interactive)
+ (if notmuch-show-citations-visible
+ (add-to-invisibility-spec 'notmuch-show-citation)
+ (remove-from-invisibility-spec 'notmuch-show-citation))
+ (set 'notmuch-show-citations-visible (not notmuch-show-citations-visible))
+ ; Need to force the redisplay for some reason
+ (force-window-update)
+ (redisplay t))
+
+(defun notmuch-show-toggle-signatures-visible ()
+ "Toggle visibility of signatures"
+ (interactive)
+ (if notmuch-show-signatures-visible
+ (add-to-invisibility-spec 'notmuch-show-signature)
+ (remove-from-invisibility-spec 'notmuch-show-signature))
+ (set 'notmuch-show-signatures-visible (not notmuch-show-signatures-visible))
+ ; Need to force the redisplay for some reason
+ (force-window-update)
+ (redisplay t))
+
+(defun notmuch-show-toggle-headers-visible ()
+ "Toggle visibility of header fields"
+ (interactive)
+ (if notmuch-show-headers-visible
+ (add-to-invisibility-spec 'notmuch-show-header)
+ (remove-from-invisibility-spec 'notmuch-show-header))
+ (set 'notmuch-show-headers-visible (not notmuch-show-headers-visible))
+ ; Need to force the redisplay for some reason
+ (force-window-update)
+ (redisplay t))
+
+(defun notmuch-show-toggle-body-read-visible ()
+ "Toggle visibility of message bodies of read messages"
+ (interactive)
+ (if notmuch-show-body-read-visible
+ (add-to-invisibility-spec 'notmuch-show-body-read)
+ (remove-from-invisibility-spec 'notmuch-show-body-read))
+ (set 'notmuch-show-body-read-visible (not notmuch-show-body-read-visible))
+ ; Need to force the redisplay for some reason
+ (force-window-update)
+ (redisplay t))
+
+;;;###autoload
+(defun notmuch-show-mode ()
+ "Major mode for viewing a thread with notmuch.
+
+This buffer contains the results of the \"notmuch show\" command
+for displaying a single thread of email from your email archives.
+
+By default, various components of email messages, (citations,
+signatures, already-read messages), are invisible to help you
+focus on the most important things, (new text from unread
+messages). See the various commands below for toggling the
+visibility of hidden components.
+
+The `notmuch-show-next-message' and
+`notmuch-show-previous-message' commands, (bound to 'n' and 'p by
+default), allow you to navigate to the next and previous
+messages. Each time you navigate away from a message with
+`notmuch-show-next-message' the current message will have its
+\"unread\" tag removed.
+
+You can add or remove tags from the current message with '+' and
+'-'. You can also archive all messages in the current
+view, (remove the \"inbox\" tag from each), with
+`notmuch-show-archive-thread' (bound to 'a' by default).
+
+\\{notmuch-show-mode-map}"
+ (interactive)
+ (kill-all-local-variables)
+ (set (make-local-variable 'notmuch-show-headers-visible) t)
+ (notmuch-show-toggle-headers-visible)
+ (set (make-local-variable 'notmuch-show-body-read-visible) t)
+ (notmuch-show-toggle-body-read-visible)
+ (set (make-local-variable 'notmuch-show-citations-visible) t)
+ (notmuch-show-toggle-citations-visible)
+ (set (make-local-variable 'notmuch-show-signatures-visible) t)
+ (notmuch-show-toggle-signatures-visible)
+ (add-to-invisibility-spec 'notmuch-show-marker)
+ (use-local-map notmuch-show-mode-map)
+ (setq major-mode 'notmuch-show-mode
+ mode-name "notmuch-show")
+ (setq buffer-read-only t))
+
+(defun notmuch-show (thread-id &optional parent-buffer)
+ "Run \"notmuch show\" with the given thread ID and display results.
+
+The optional PARENT-BUFFER is the notmuch-search buffer from
+which this notmuch-show command was executed, (so that the next
+thread from that buffer can be show when done with this one)."
+ (interactive "sNotmuch show: ")
+ (let ((buffer (get-buffer-create (concat "*notmuch-show-" thread-id "*"))))
+ (switch-to-buffer buffer)
+ (notmuch-show-mode)
+ (set (make-local-variable 'notmuch-show-parent-buffer) parent-buffer)
+ (let ((proc (get-buffer-process (current-buffer)))
+ (inhibit-read-only t))
+ (if proc
+ (error "notmuch search process already running for query `%s'" query)
+ )
+ (erase-buffer)
+ (goto-char (point-min))
+ (save-excursion
+ (call-process "notmuch" nil t nil "show" thread-id)
+ (notmuch-show-markup-messages)
+ )
+ (notmuch-show-next-unread-message)
+ (if (eobp)
+ (goto-char (point-min)))
+ )))
+
+(defvar notmuch-search-mode-map
+ (let ((map (make-sparse-keymap)))
+ (define-key map "a" 'notmuch-search-archive-thread)
+ (define-key map "b" 'scroll-down)
+ (define-key map "f" 'notmuch-search-filter)
+ (define-key map "n" 'next-line)
+ (define-key map "p" 'previous-line)
+ (define-key map "q" 'kill-this-buffer)
+ (define-key map "s" 'notmuch-search)
+ (define-key map "t" 'notmuch-search-filter-by-tag)
+ (define-key map "x" 'kill-this-buffer)
+ (define-key map (kbd "RET") 'notmuch-search-show-thread)
+ (define-key map "+" 'notmuch-search-add-tag)
+ (define-key map "-" 'notmuch-search-remove-tag)
+ (define-key map "<" 'beginning-of-buffer)
+ (define-key map ">" 'notmuch-search-goto-last-thread)
+ (define-key map "=" 'notmuch-search-refresh-view)
+ (define-key map "\M->" 'notmuch-search-goto-last-thread)
+ (define-key map " " 'scroll-up)
+ (define-key map (kbd "<DEL>") 'scroll-down)
+ map)
+ "Keymap for \"notmuch search\" buffers.")
+(fset 'notmuch-search-mode-map notmuch-search-mode-map)
+
+(defun notmuch-search-goto-last-thread (&optional arg)
+ "Move point to the last thread in the buffer."
+ (interactive "^P")
+ (end-of-buffer arg)
+ (forward-line -1))