1 ;;; notmuch-show.el --- displaying notmuch forests -*- lexical-binding: t -*-
3 ;; Copyright © Carl Worth
4 ;; Copyright © David Edmondson
6 ;; This file is part of Notmuch.
8 ;; Notmuch is free software: you can redistribute it and/or modify it
9 ;; under the terms of the GNU General Public License as published by
10 ;; the Free Software Foundation, either version 3 of the License, or
11 ;; (at your option) any later version.
13 ;; Notmuch is distributed in the hope that it will be useful, but
14 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 ;; General Public License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with Notmuch. If not, see <https://www.gnu.org/licenses/>.
21 ;; Authors: Carl Worth <cworth@cworth.org>
22 ;; David Edmondson <dme@dme.org>
33 (require 'notmuch-lib)
34 (require 'notmuch-tag)
35 (require 'notmuch-query)
36 (require 'notmuch-wash)
37 (require 'notmuch-mua)
38 (require 'notmuch-crypto)
39 (require 'notmuch-print)
40 (require 'notmuch-draft)
42 (declare-function notmuch-call-notmuch-process "notmuch-lib" (&rest args))
43 (declare-function notmuch-search-next-thread "notmuch" nil)
44 (declare-function notmuch-search-previous-thread "notmuch" nil)
45 (declare-function notmuch-search-show-thread "notmuch")
46 (declare-function notmuch-foreach-mime-part "notmuch" (function mm-handle))
47 (declare-function notmuch-count-attachments "notmuch" (mm-handle))
48 (declare-function notmuch-save-attachments "notmuch" (mm-handle &optional queryp))
49 (declare-function notmuch-tree "notmuch-tree"
50 (&optional query query-context target buffer-name
51 open-target unthreaded parent-buffer))
52 (declare-function notmuch-tree-get-message-properties "notmuch-tree" nil)
53 (declare-function notmuch-unthreaded "notmuch-tree"
54 (&optional query query-context target buffer-name
56 (declare-function notmuch-read-query "notmuch" (prompt))
57 (declare-function notmuch-draft-resume "notmuch-draft" (id))
59 (defvar shr-blocked-images)
60 (defvar gnus-blocked-images)
61 (defvar shr-content-function)
62 (defvar w3m-ignored-image-url-regexp)
66 (defcustom notmuch-message-headers '("Subject" "To" "Cc" "Date")
67 "Headers that should be shown in a message, in this order.
69 For an open message, all of these headers will be made visible
70 according to `notmuch-message-headers-visible' or can be toggled
71 with `notmuch-show-toggle-visibility-headers'. For a closed message,
72 only the first header in the list will be visible."
73 :type '(repeat string)
76 (defcustom notmuch-message-headers-visible t
77 "Should the headers be visible by default?
79 If this value is non-nil, then all of the headers defined in
80 `notmuch-message-headers' will be visible by default in the display
81 of each message. Otherwise, these headers will be hidden and
82 `notmuch-show-toggle-visibility-headers' can be used to make them
83 visible for any given message."
87 (defcustom notmuch-show-header-line t
88 "Show a header line with the current message's subject."
92 (defcustom notmuch-show-relative-dates t
93 "Display relative dates in the message summary line."
97 (defvar notmuch-show-markup-headers-hook '(notmuch-show-colour-headers)
98 "A list of functions called to decorate the headers listed in
99 `notmuch-message-headers'.")
101 (defcustom notmuch-show-hook '(notmuch-show-turn-on-visual-line-mode)
102 "Functions called after populating a `notmuch-show' buffer."
104 :options '(notmuch-show-turn-on-visual-line-mode)
106 :group 'notmuch-hooks)
108 (defcustom notmuch-show-insert-text/plain-hook
109 '(notmuch-wash-wrap-long-lines
110 notmuch-wash-tidy-citations
111 notmuch-wash-elide-blank-lines
112 notmuch-wash-excerpt-citations)
113 "Functions used to improve the display of text/plain parts."
115 :options '(notmuch-wash-convert-inline-patch-to-part
116 notmuch-wash-wrap-long-lines
117 notmuch-wash-tidy-citations
118 notmuch-wash-elide-blank-lines
119 notmuch-wash-excerpt-citations)
121 :group 'notmuch-hooks)
123 (defcustom notmuch-show-max-text-part-size 100000
124 "Maximum size of a text part to be shown by default in characters.
126 Set to 0 to show the part regardless of size."
128 :group 'notmuch-show)
130 ;; Mostly useful for debugging.
131 (defcustom notmuch-show-all-multipart/alternative-parts nil
132 "Should all parts of multipart/alternative parts be shown?"
134 :group 'notmuch-show)
136 (defcustom notmuch-show-indent-messages-width 1
137 "Width of message indentation in threads.
139 Messages are shown indented according to their depth in a thread.
140 This variable determines the width of this indentation measured
141 in number of blanks. Defaults to `1', choose `0' to disable
144 :group 'notmuch-show)
146 (defcustom notmuch-show-indent-multipart nil
147 "Should the sub-parts of a multipart/* part be indented?"
148 ;; dme: Not sure which is a good default.
150 :group 'notmuch-show)
152 (defcustom notmuch-show-part-button-default-action 'notmuch-show-save-part
153 "Default part header button action (on ENTER or mouse click)."
155 :type '(choice (const :tag "Save part"
156 notmuch-show-save-part)
157 (const :tag "View part"
158 notmuch-show-view-part)
159 (const :tag "View interactively"
160 notmuch-show-interactively-view-part)))
162 (defcustom notmuch-show-only-matching-messages nil
163 "Only matching messages are shown by default."
165 :group 'notmuch-show)
167 ;; By default, block all external images to prevent privacy leaks and
168 ;; potential attacks.
169 (defcustom notmuch-show-text/html-blocked-images "."
170 "Remote images that have URLs matching this regexp will be blocked."
171 :type '(choice (const nil) regexp)
172 :group 'notmuch-show)
176 (defvar-local notmuch-show-thread-id nil)
178 (defvar-local notmuch-show-parent-buffer nil)
180 (defvar-local notmuch-show-query-context nil)
182 (defvar-local notmuch-show-process-crypto nil)
184 (defvar-local notmuch-show-elide-non-matching-messages nil)
186 (defvar-local notmuch-show-indent-content t)
188 (defvar-local notmuch-show-single-message nil)
190 (defvar notmuch-show-attachment-debug nil
191 "If t log stdout and stderr from attachment handlers.
193 When set to nil (the default) stdout and stderr from attachment
194 handlers is discarded. When set to t the stdout and stderr from
195 each attachment handler is logged in buffers with names beginning
196 \" *notmuch-part*\".")
200 (defcustom notmuch-show-stash-mlarchive-link-alist
201 '(("MARC" . "https://marc.info/?i=")
202 ("Mail Archive, The" . "https://mid.mail-archive.com/")
203 ("Lore" . "https://lore.kernel.org/r/")
204 ("Notmuch" . "https://nmbug.notmuchmail.org/nmweb/show/")
205 ;; FIXME: can these services be searched by `Message-Id' ?
206 ;; ("MarkMail" . "http://markmail.org/")
207 ;; ("Nabble" . "http://nabble.com/")
208 ;; ("opensubscriber" . "http://opensubscriber.com/")
210 "List of Mailing List Archives to use when stashing links.
212 This list is used for generating a Mailing List Archive reference
213 URI with the current message's Message-Id in
214 `notmuch-show-stash-mlarchive-link'.
216 If the cdr of the alist element is not a function, the cdr is
217 expected to contain a URI that is concatenated with the current
218 message's Message-Id to create a ML archive reference URI.
220 If the cdr is a function, the function is called with the
221 Message-Id as the argument, and the function is expected to
222 return the ML archive reference URI."
223 :type '(alist :key-type (string :tag "Name")
226 (function :tag "Function returning the URL")))
227 :group 'notmuch-show)
229 (defcustom notmuch-show-stash-mlarchive-link-default "MARC"
230 "Default Mailing List Archive to use when stashing links.
232 This is used when `notmuch-show-stash-mlarchive-link' isn't
233 provided with an MLA argument nor `completing-read' input."
237 (list 'const :tag (car mla) :value (car mla)))
238 notmuch-show-stash-mlarchive-link-alist))
239 :group 'notmuch-show)
241 (defcustom notmuch-show-mark-read-tags '("-unread")
242 "List of tag changes to apply to a message when it is marked as read.
244 Tags starting with \"+\" (or not starting with either \"+\" or
245 \"-\") in the list will be added, and tags starting with \"-\"
246 will be removed from the message being marked as read.
248 For example, if you wanted to remove an \"unread\" tag and add a
249 \"read\" tag (which would make little sense), you would set:
250 (\"-unread\" \"+read\")"
251 :type '(repeat string)
252 :group 'notmuch-show)
254 (defcustom notmuch-show-mark-read-function #'notmuch-show-seen-current-message
255 "Function to control which messages are marked read.
257 The function should take two arguments START and END which will
258 be the start and end of the visible portion of the buffer and
259 should mark the appropriate messages read by applying
260 `notmuch-show-mark-read'. This function will be called after
261 every user interaction with notmuch."
263 :group 'notmuch-show)
265 (defcustom notmuch-show-imenu-indent nil
266 "Should Imenu display messages indented.
268 By default, Imenu (see Info node `(emacs) Imenu') in a
269 notmuch-show buffer displays all messages straight. This is
270 because the default Emacs frontend for Imenu makes it difficult
271 to select an Imenu entry with spaces in front. Other imenu
272 frontends such as counsel-imenu does not have this limitation.
273 In these cases, Imenu entries can be indented to reflect the
274 position of the message in the thread."
276 :group 'notmuch-show)
280 (defmacro with-current-notmuch-show-message (&rest body)
281 "Evaluate body with current buffer set to the text of current message."
283 (let ((id (notmuch-show-get-message-id)))
284 (let ((buf (generate-new-buffer (concat "*notmuch-msg-" id "*"))))
285 (with-current-buffer buf
286 (let ((coding-system-for-read 'no-conversion))
287 (notmuch--call-process notmuch-command nil t nil "show" "--format=raw" id))
289 (kill-buffer buf)))))
291 (defun notmuch-show-turn-on-visual-line-mode ()
292 "Enable Visual Line mode."
293 (visual-line-mode t))
297 ;; DEPRECATED in Notmuch 0.16 since we now have convenient part
298 ;; commands. We'll keep the command around for a version or two in
299 ;; case people want to bind it themselves.
300 (defun notmuch-show-view-all-mime-parts ()
301 "Use external viewers to view all attachments from the current message."
303 (with-current-notmuch-show-message
304 ;; We override the mm-inline-media-tests to indicate which message
305 ;; parts are already sufficiently handled by the original
306 ;; presentation of the message in notmuch-show mode. These parts
307 ;; will be inserted directly into the temporary buffer of
308 ;; with-current-notmuch-show-message and silently discarded.
310 ;; Any MIME part not explicitly mentioned here will be handled by an
311 ;; external viewer as configured in the various mailcap files.
312 (let ((mm-inline-media-tests
313 '(("text/.*" ignore identity)
314 ("application/pgp-signature" ignore identity)
315 ("multipart/alternative" ignore identity)
316 ("multipart/mixed" ignore identity)
317 ("multipart/related" ignore identity))))
318 (mm-display-parts (mm-dissect-buffer)))))
320 (defun notmuch-show-save-attachments ()
321 "Save all attachments from the current message."
323 (with-current-notmuch-show-message
324 (let ((mm-handle (mm-dissect-buffer)))
325 (notmuch-save-attachments
326 mm-handle (> (notmuch-count-attachments mm-handle) 1))))
329 (defun notmuch-show-with-message-as-text (fn)
330 "Apply FN to a text representation of the current message.
332 FN is called with one argument, the message properties. It should
333 operation on the contents of the current buffer."
334 ;; Remake the header to ensure that all information is available.
335 (let* ((to (notmuch-show-get-to))
336 (cc (notmuch-show-get-cc))
337 (from (notmuch-show-get-from))
338 (subject (notmuch-show-get-subject))
339 (date (notmuch-show-get-date))
340 (tags (notmuch-show-get-tags))
341 (depth (notmuch-show-get-depth))
343 "Subject: " subject "\n"
345 (if (not (string-empty-p cc))
346 (concat "Cc: " cc "\n")
352 (mapconcat #'identity tags ", ") "\n")
354 (all (buffer-substring (notmuch-show-message-top)
355 (notmuch-show-message-bottom)))
357 (props (notmuch-show-get-message-properties))
358 (indenting notmuch-show-indent-content))
362 (indent-rigidly (point-min)
364 (- (* notmuch-show-indent-messages-width depth))))
365 ;; Remove the original header.
366 (goto-char (point-min))
367 (re-search-forward "^$" (point-max) nil)
368 (delete-region (point-min) (point))
370 (funcall fn props))))
372 (defun notmuch-show-print-message ()
373 "Print the current message."
375 (notmuch-show-with-message-as-text 'notmuch-print-message))
379 (defun notmuch-show-fontify-header ()
381 ((looking-at "[Tt]o:")
383 ((looking-at "[Bb]?[Cc][Cc]:")
385 ((looking-at "[Ss]ubject:")
386 'message-header-subject)
388 'message-header-other))))
389 (overlay-put (make-overlay (point) (re-search-forward ":"))
390 'face 'message-header-name)
391 (overlay-put (make-overlay (point) (re-search-forward ".*$"))
394 (defun notmuch-show-colour-headers ()
395 "Apply some colouring to the current headers."
396 (goto-char (point-min))
397 (while (looking-at "^[A-Za-z][-A-Za-z0-9]*:")
398 (notmuch-show-fontify-header)
401 (defun notmuch-show-spaces-n (n)
402 "Return a string comprised of `n' spaces."
405 (defun notmuch-show-update-tags (tags)
406 "Update the displayed tags of the current message."
408 (goto-char (notmuch-show-message-top))
409 (when (re-search-forward "(\\([^()]*\\))$" (line-end-position) t)
410 (let ((inhibit-read-only t))
411 (replace-match (concat "("
412 (notmuch-tag-format-tags
414 (notmuch-show-get-prop :orig-tags))
417 (defun notmuch-clean-address (address)
418 "Try to clean a single email ADDRESS for display. Return a cons
419 cell of (AUTHOR_EMAIL AUTHOR_NAME). Return (ADDRESS nil) if
422 (let (p-name p-address)
423 ;; It would be convenient to use `mail-header-parse-address',
424 ;; but that expects un-decoded mailbox parts, whereas our
425 ;; mailbox parts are already decoded (and hence may contain
426 ;; UTF-8). Given that notmuch should handle most of the awkward
427 ;; cases, some simple string deconstruction should be sufficient
430 ;; "User <user@dom.ain>" style.
431 ((string-match "\\(.*\\) <\\(.*\\)>" address)
432 (setq p-name (match-string 1 address))
433 (setq p-address (match-string 2 address)))
435 ;; "<user@dom.ain>" style.
436 ((string-match "<\\(.*\\)>" address)
437 (setq p-address (match-string 1 address)))
440 (setq p-address address)))
442 ;; Remove elements of the mailbox part that are not relevant for
443 ;; display, even if they are required during transport:
446 (setq p-name (replace-regexp-in-string "\\\\" "" p-name))
447 ;; Outer single and double quotes, which might be nested.
448 (cl-loop with start-of-loop
449 do (setq start-of-loop p-name)
450 when (string-match "^\"\\(.*\\)\"$" p-name)
451 do (setq p-name (match-string 1 p-name))
452 when (string-match "^'\\(.*\\)'$" p-name)
453 do (setq p-name (match-string 1 p-name))
454 until (string= start-of-loop p-name)))
455 ;; If the address is 'foo@bar.com <foo@bar.com>' then show just
457 (when (string= p-name p-address)
459 (cons p-address p-name))
460 (error (cons address nil))))
462 (defun notmuch-show-clean-address (address)
463 "Try to clean a single email ADDRESS for display.
464 Return unchanged ADDRESS if parsing fails."
465 (let* ((clean-address (notmuch-clean-address address))
466 (p-address (car clean-address))
467 (p-name (cdr clean-address)))
468 ;; If no name, return just the address.
471 ;; Otherwise format the name and address together.
472 (concat p-name " <" p-address ">"))))
474 (defun notmuch-show-insert-headerline (headers date tags depth)
475 "Insert a notmuch style headerline based on HEADERS for a
476 message at DEPTH in the current thread."
477 (let ((start (point))
478 (from (notmuch-sanitize
479 (notmuch-show-clean-address (plist-get headers :From)))))
480 (when (string-match "\\cR" from)
481 ;; If the From header has a right-to-left character add
482 ;; invisible U+200E LEFT-TO-RIGHT MARK character which forces
483 ;; the header paragraph as left-to-right text.
484 (insert (propertize (string ?\x200e) 'invisible t)))
485 (insert (if notmuch-show-indent-content
486 (notmuch-show-spaces-n (* notmuch-show-indent-messages-width
493 (notmuch-tag-format-tags tags tags)
495 (overlay-put (make-overlay start (point))
496 'face 'notmuch-message-summary-face)))
498 (defun notmuch-show-insert-header (header header-value)
499 "Insert a single header."
500 (insert header ": " (notmuch-sanitize header-value) "\n"))
502 (defun notmuch-show-insert-headers (headers)
503 "Insert the headers of the current message."
504 (let ((start (point)))
505 (mapc (lambda (header)
506 (let* ((header-symbol (intern (concat ":" header)))
507 (header-value (plist-get headers header-symbol)))
508 (when (and header-value
509 (not (string-equal "" header-value)))
510 (notmuch-show-insert-header header header-value))))
511 notmuch-message-headers)
514 (narrow-to-region start (point-max))
515 (run-hooks 'notmuch-show-markup-headers-hook)))))
519 (define-button-type 'notmuch-show-part-button-type
520 'action 'notmuch-show-part-button-default
523 :supertype 'notmuch-button-type)
525 (defun notmuch-show-insert-part-header (_nth content-type declared-type
526 &optional name comment)
527 (let ((base-label (concat (and name (concat name ": "))
529 (and (not (string-equal declared-type content-type))
530 (concat " (as " content-type ")"))
532 (prog1 (insert-button
533 (concat "[ " base-label " ]")
534 :base-label base-label
535 :type 'notmuch-show-part-button-type
536 :notmuch-part-hidden nil)
539 (defun notmuch-show-toggle-part-invisibility (&optional button)
541 (let ((button (or button (button-at (point)))))
543 (let ((overlay (button-get button 'overlay))
544 (lazy-part (button-get button :notmuch-lazy-part)))
545 ;; We have a part to toggle if there is an overlay or if there
546 ;; is a lazy part. If neither is present we cannot toggle the
547 ;; part so we just return nil.
548 (when (or overlay lazy-part)
549 (let* ((show (button-get button :notmuch-part-hidden))
550 (new-start (button-start button))
551 (button-label (button-get button :base-label))
553 (properties (text-properties-at (button-start button)))
554 (inhibit-read-only t))
555 ;; Toggle the button itself.
556 (button-put button :notmuch-part-hidden (not show))
557 (goto-char new-start)
558 (insert "[ " button-label (if show " ]" " (hidden) ]"))
559 (set-text-properties new-start (point) properties)
560 (let ((old-end (button-end button)))
561 (move-overlay button new-start (point))
562 (delete-region (point) old-end))
563 (goto-char (min old-point (1- (button-end button))))
564 ;; Return nil if there is a lazy-part, it is empty, and we are
565 ;; trying to show it. In all other cases return t.
568 (button-put button :notmuch-lazy-part nil)
569 (notmuch-show-lazy-part lazy-part button))
570 ;; else there must be an overlay.
571 (overlay-put overlay 'invisible (not show))
574 ;;; Part content ID handling
576 (defvar notmuch-show--cids nil
577 "Alist from raw content ID to (MSG PART).")
578 (make-variable-buffer-local 'notmuch-show--cids)
580 (defun notmuch-show--register-cids (msg part)
581 "Register content-IDs in PART and all of PART's sub-parts."
582 (let ((content-id (plist-get part :content-id)))
584 ;; Note that content-IDs are globally unique, except when they
585 ;; aren't: RFC 2046 section 5.1.4 permits children of a
586 ;; multipart/alternative to have the same content-ID, in which
587 ;; case the MUA is supposed to pick the best one it can render.
588 ;; We simply add the content-ID to the beginning of our alist;
589 ;; so if this happens, we'll take the last (and "best")
590 ;; alternative (even if we can't render it).
591 (push (list content-id msg part) notmuch-show--cids)))
592 ;; Recurse on sub-parts
593 (when-let ((type (plist-get part :content-type)))
594 (pcase-let ((`(,type ,subtype)
595 (split-string (downcase type) "/")))
596 (cond ((equal type "multipart")
597 (mapc (apply-partially #'notmuch-show--register-cids msg)
598 (plist-get part :content)))
599 ((and (equal type "message")
600 (equal subtype "rfc822"))
601 (notmuch-show--register-cids
603 (car (plist-get (car (plist-get part :content)) :body))))))))
605 (defun notmuch-show--get-cid-content (cid)
606 "Return a list (CID-content content-type) or nil.
608 This will only find parts from messages that have been inserted
609 into the current buffer. CID must be a raw content ID, without
610 enclosing angle brackets, a cid: prefix, or URL encoding. This
611 will return nil if the CID is unknown or cannot be retrieved."
612 (when-let ((descriptor (cdr (assoc cid notmuch-show--cids))))
613 (pcase-let ((`(,msg ,part) descriptor))
614 ;; Request caching for this content, as some messages
615 ;; reference the same cid: part many times (hundreds!).
616 (list (notmuch-get-bodypart-binary
617 msg part notmuch-show-process-crypto 'cache)
618 (plist-get part :content-type)))))
620 (defun notmuch-show-setup-w3m ()
621 "Instruct w3m how to retrieve content from a \"related\" part of a message."
623 (when (and (boundp 'w3m-cid-retrieve-function-alist)
624 (not (assq 'notmuch-show-mode w3m-cid-retrieve-function-alist)))
625 (push (cons 'notmuch-show-mode #'notmuch-show--cid-w3m-retrieve)
626 w3m-cid-retrieve-function-alist))
627 (setq mm-html-inhibit-images nil))
629 (defvar w3m-current-buffer) ;; From `w3m.el'.
630 (defun notmuch-show--cid-w3m-retrieve (url &rest _args)
631 ;; url includes the cid: prefix and is URL encoded (see RFC 2392).
632 (let* ((cid (url-unhex-string (substring url 4)))
634 (with-current-buffer w3m-current-buffer
635 (notmuch-show--get-cid-content cid))))
636 (when content-and-type
637 (insert (car content-and-type))
638 (cadr content-and-type))))
640 ;; MIME part renderers
642 (defun notmuch-show-multipart/*-to-list (part)
643 (mapcar (lambda (inner-part) (plist-get inner-part :content-type))
644 (plist-get part :content)))
646 (defun notmuch-show-insert-part-multipart/alternative (msg part _content-type _nth depth _button)
647 (let ((chosen-type (car (notmuch-multipart/alternative-choose
648 msg (notmuch-show-multipart/*-to-list part))))
649 (inner-parts (plist-get part :content))
651 ;; This inserts all parts of the chosen type rather than just one,
652 ;; but it's not clear that this is the wrong thing to do - which
653 ;; should be chosen if there are more than one that match?
654 (mapc (lambda (inner-part)
655 (let* ((inner-type (plist-get inner-part :content-type))
656 (hide (not (or notmuch-show-all-multipart/alternative-parts
657 (string= chosen-type inner-type)))))
658 (notmuch-show-insert-bodypart msg inner-part depth hide)))
661 (when notmuch-show-indent-multipart
662 (indent-rigidly start (point) 1)))
665 (defun notmuch-show-insert-part-multipart/related (msg part _content-type _nth depth _button)
666 (let ((inner-parts (plist-get part :content))
668 ;; Render the primary part. FIXME: Support RFC 2387 Start header.
669 (notmuch-show-insert-bodypart msg (car inner-parts) depth)
670 ;; Add hidden buttons for the rest
671 (mapc (lambda (inner-part)
672 (notmuch-show-insert-bodypart msg inner-part depth t))
674 (when notmuch-show-indent-multipart
675 (indent-rigidly start (point) 1)))
678 (defun notmuch-show-insert-part-multipart/signed (msg part _content-type _nth depth button)
680 (button-put button 'face 'notmuch-crypto-part-header))
681 ;; Insert a button detailing the signature status.
682 (notmuch-crypto-insert-sigstatus-button (car (plist-get part :sigstatus))
683 (notmuch-show-get-header :From msg))
684 (let ((inner-parts (plist-get part :content))
686 ;; Show all of the parts.
687 (mapc (lambda (inner-part)
688 (notmuch-show-insert-bodypart msg inner-part depth))
690 (when notmuch-show-indent-multipart
691 (indent-rigidly start (point) 1)))
694 (defun notmuch-show-insert-part-multipart/encrypted (msg part _content-type _nth depth button)
696 (button-put button 'face 'notmuch-crypto-part-header))
697 ;; Insert a button detailing the encryption status.
698 (notmuch-crypto-insert-encstatus-button (car (plist-get part :encstatus)))
699 ;; Insert a button detailing the signature status.
700 (notmuch-crypto-insert-sigstatus-button (car (plist-get part :sigstatus))
701 (notmuch-show-get-header :From msg))
702 (let ((inner-parts (plist-get part :content))
704 ;; Show all of the parts.
705 (mapc (lambda (inner-part)
706 (notmuch-show-insert-bodypart msg inner-part depth))
708 (when notmuch-show-indent-multipart
709 (indent-rigidly start (point) 1)))
712 (defun notmuch-show-insert-part-application/pgp-encrypted (_msg _part _content-type _nth _depth _button)
715 (defun notmuch-show-insert-part-multipart/* (msg part _content-type _nth depth _button)
716 (let ((inner-parts (plist-get part :content))
718 ;; Show all of the parts.
719 (mapc (lambda (inner-part)
720 (notmuch-show-insert-bodypart msg inner-part depth))
722 (when notmuch-show-indent-multipart
723 (indent-rigidly start (point) 1)))
726 (defun notmuch-show-insert-part-message/rfc822 (msg part _content-type _nth depth _button)
727 (let ((message (car (plist-get part :content))))
730 (let ((body (car (plist-get message :body)))
732 ;; Override `notmuch-message-headers' to force `From' to be
734 (let ((notmuch-message-headers '("From" "Subject" "To" "Cc" "Date")))
735 (notmuch-show-insert-headers (plist-get message :headers)))
736 ;; Blank line after headers to be compatible with the normal
740 (notmuch-show-insert-bodypart msg body depth)
741 (when notmuch-show-indent-multipart
742 (indent-rigidly start (point) 1))
745 (defun notmuch-show-insert-part-text/plain (msg part _content-type _nth depth button)
746 ;; For backward compatibility we want to apply the text/plain hook
747 ;; to the whole of the part including the part button if there is
749 (let ((start (if button
750 (button-start button)
752 (insert (notmuch-get-bodypart-text msg part notmuch-show-process-crypto))
755 (narrow-to-region start (point-max))
756 (run-hook-with-args 'notmuch-show-insert-text/plain-hook msg depth))))
759 (defun notmuch-show-insert-part-text/calendar (msg part _content-type _nth _depth _button)
760 (insert (with-temp-buffer
761 (insert (notmuch-get-bodypart-text msg part notmuch-show-process-crypto))
762 ;; notmuch-get-bodypart-text does no newline conversion.
763 ;; Replace CRLF with LF before icalendar can use it.
764 (goto-char (point-min))
765 (while (re-search-forward "\r\n" nil t)
766 (replace-match "\n" nil nil))
767 (let ((file (make-temp-file "notmuch-ical"))
771 (unless (icalendar-import-buffer file t)
772 (error "Icalendar import error. %s"
773 "See *icalendar-errors* for more information"))
774 (set-buffer (get-file-buffer file))
775 (setq result (buffer-substring (point-min) (point-max)))
776 (set-buffer-modified-p nil)
777 (kill-buffer (current-buffer)))
782 ;; For backwards compatibility.
783 (defun notmuch-show-insert-part-text/x-vcalendar (msg part _content-type _nth depth _button)
784 (notmuch-show-insert-part-text/calendar msg part nil nil depth nil))
786 (when (version< emacs-version "25.3")
787 ;; https://bugs.gnu.org/28350
789 ;; For newer emacs, we fall back to notmuch-show-insert-part-*/*
790 ;; (see notmuch-show-handlers-for)
791 (defun notmuch-show-insert-part-text/enriched
792 (msg part content-type nth depth button)
793 ;; By requiring enriched below, we ensure that the function
794 ;; enriched-decode-display-prop is defined before it will be
795 ;; shadowed by the letf below. Otherwise the version in
796 ;; enriched.el may be loaded a bit later and used instead (for
799 (cl-letf (((symbol-function 'enriched-decode-display-prop)
800 (lambda (start end &optional _param) (list start end))))
801 (notmuch-show-insert-part-*/* msg part content-type nth depth button))))
803 (defun notmuch-show-get-mime-type-of-application/octet-stream (part)
804 ;; If we can deduce a MIME type from the filename of the attachment,
806 (and (plist-get part :filename)
807 (let ((extension (file-name-extension (plist-get part :filename))))
810 (mailcap-parse-mimetypes)
811 (let ((mime-type (mailcap-extension-to-mime extension)))
813 (not (string-equal mime-type "application/octet-stream"))
816 (defun notmuch-show-insert-part-text/html (msg part content-type nth depth button)
817 (if (eq mm-text-html-renderer 'shr)
818 ;; It's easier to drive shr ourselves than to work around the
819 ;; goofy things `mm-shr' does (like irreversibly taking over
820 ;; content ID handling).
821 ;; FIXME: If we block an image, offer a button to load external
823 (let ((shr-blocked-images notmuch-show-text/html-blocked-images))
824 (notmuch-show--insert-part-text/html-shr msg part))
825 ;; Otherwise, let message-mode do the heavy lifting
827 ;; w3m sets up a keymap which "leaks" outside the invisible region
828 ;; and causes strange effects in notmuch. We set
829 ;; mm-inline-text-html-with-w3m-keymap to nil to tell w3m not to
830 ;; set a keymap (so the normal notmuch-show-mode-map remains).
831 (let ((mm-inline-text-html-with-w3m-keymap nil)
832 ;; FIXME: If we block an image, offer a button to load external
834 (gnus-blocked-images notmuch-show-text/html-blocked-images)
835 (w3m-ignored-image-url-regexp notmuch-show-text/html-blocked-images))
836 (notmuch-show-insert-part-*/* msg part content-type nth depth button))))
838 ;;; Functions used by notmuch-show--insert-part-text/html-shr
840 (declare-function libxml-parse-html-region "xml.c")
841 (declare-function shr-insert-document "shr")
843 (defun notmuch-show--insert-part-text/html-shr (msg part)
844 ;; Make sure shr is loaded before we start let-binding its globals
846 (let ((dom (let ((process-crypto notmuch-show-process-crypto))
848 (insert (notmuch-get-bodypart-text msg part process-crypto))
849 (libxml-parse-html-region (point-min) (point-max)))))
850 (shr-content-function
852 ;; shr strips the "cid:" part of URL, but doesn't
853 ;; URL-decode it (see RFC 2392).
854 (let ((cid (url-unhex-string url)))
855 (car (notmuch-show--get-cid-content cid))))))
856 (shr-insert-document dom)
859 (defun notmuch-show-insert-part-*/* (msg part content-type _nth _depth _button)
860 ;; This handler _must_ succeed - it is the handler of last resort.
861 (notmuch-mm-display-part-inline msg part content-type notmuch-show-process-crypto)
864 ;;; Functions for determining how to handle MIME parts.
866 (defun notmuch-show-handlers-for (content-type)
867 "Return a list of content handlers for a part of type CONTENT-TYPE."
870 (when (functionp func)
872 ;; Reverse order of prefrence.
873 (list (intern (concat "notmuch-show-insert-part-*/*"))
874 (intern (concat "notmuch-show-insert-part-"
875 (car (split-string content-type "/"))
877 (intern (concat "notmuch-show-insert-part-" content-type))))
882 (defun notmuch-show-insert-bodypart-internal (msg part content-type nth depth button)
883 ;; Run the handlers until one of them succeeds.
884 (cl-loop for handler in (notmuch-show-handlers-for content-type)
885 until (condition-case err
886 (funcall handler msg part content-type nth depth button)
887 ;; Specifying `debug' here lets the debugger run if
888 ;; `debug-on-error' is non-nil.
890 (insert "!!! Bodypart handler `" (prin1-to-string handler)
891 "' threw an error:\n"
892 "!!! " (error-message-string err) "\n")
895 (defun notmuch-show-create-part-overlays (button beg end)
896 "Add an overlay to the part between BEG and END."
897 ;; If there is no button (i.e., the part is text/plain and the first
898 ;; part) or if the part has no content then we don't make the part
900 (when (and button (/= beg end))
901 (button-put button 'overlay (make-overlay beg end))
902 ;; Return true if we created an overlay.
905 (defun notmuch-show-record-part-information (part beg end)
906 "Store PART as a text property from BEG to END."
907 ;; Record part information. Since we already inserted subparts,
908 ;; don't override existing :notmuch-part properties.
909 (notmuch-map-text-property beg end :notmuch-part
910 (lambda (v) (or v part)))
911 ;; Make :notmuch-part front sticky and rear non-sticky so it stays
912 ;; applied to the beginning of each line when we indent the
913 ;; message. Since we're operating on arbitrary renderer output,
914 ;; watch out for sticky specs of t, which means all properties are
915 ;; front-sticky/rear-nonsticky.
916 (notmuch-map-text-property beg end 'front-sticky
919 (cl-pushnew :notmuch-part v)
921 (notmuch-map-text-property beg end 'rear-nonsticky
924 (cl-pushnew :notmuch-part v)
927 (defun notmuch-show-lazy-part (part-args button)
928 ;; Insert the lazy part after the button for the part. We would just
929 ;; move to the start of the new line following the button and insert
930 ;; the part but that point might have text properties (eg colours
931 ;; from a message header etc) so instead we start from the last
932 ;; character of the button by adding a newline and finish by
933 ;; removing the extra newline from the end of the part.
935 (goto-char (button-end button))
937 (let* ((inhibit-read-only t)
938 ;; We need to use markers for the start and end of the part
939 ;; because the part insertion functions do not guarantee
940 ;; to leave point at the end of the part.
941 (part-beg (copy-marker (point) nil))
942 (part-end (copy-marker (point) t))
943 ;; We have to save the depth as we can't find the depth
945 (depth (notmuch-show-get-depth)))
947 (narrow-to-region part-beg part-end)
948 (delete-region part-beg part-end)
949 (apply #'notmuch-show-insert-bodypart-internal part-args)
950 (indent-rigidly part-beg
952 (* notmuch-show-indent-messages-width depth)))
955 (notmuch-show-record-part-information (cadr part-args)
956 (button-start button)
958 ;; Create the overlay. If the lazy-part turned out to be empty/not
959 ;; showable this returns nil.
960 (notmuch-show-create-part-overlays button part-beg part-end))))
962 (defun notmuch-show-mime-type (part)
963 "Return the correct mime-type to use for PART."
964 (when-let ((content-type (plist-get part :content-type)))
965 (setq content-type (downcase content-type))
966 (or (and (string= content-type "application/octet-stream")
967 (notmuch-show-get-mime-type-of-application/octet-stream part))
968 (and (string= content-type "inline patch")
972 ;; The following variable can be overridden by let bindings.
973 (defvar notmuch-show-insert-header-p-function 'notmuch-show-insert-header-p
974 "Specify which function decides which part headers get inserted.
976 The function should take two parameters, PART and HIDE, and
977 should return non-NIL if a header button should be inserted for
980 (defun notmuch-show-insert-header-p (part _hide)
981 ;; Show all part buttons except for the first part if it is text/plain.
982 (let ((mime-type (notmuch-show-mime-type part)))
983 (not (and (string= mime-type "text/plain")
984 (<= (plist-get part :id) 1)))))
986 (defun notmuch-show-reply-insert-header-p-never (_part _hide)
989 (defun notmuch-show-reply-insert-header-p-trimmed (part hide)
990 (let ((mime-type (notmuch-show-mime-type part)))
991 (and (not (notmuch-match-content-type mime-type "multipart/*"))
994 (defun notmuch-show-reply-insert-header-p-minimal (part hide)
995 (let ((mime-type (notmuch-show-mime-type part)))
996 (and (notmuch-match-content-type mime-type "text/*")
999 (defun notmuch-show-insert-bodypart (msg part depth &optional hide)
1000 "Insert the body part PART at depth DEPTH in the current thread.
1002 HIDE determines whether to show or hide the part and the button
1003 as follows: If HIDE is nil, show the part and the button. If HIDE
1004 is t, hide the part initially and show the button."
1005 (let* ((content-type (plist-get part :content-type))
1006 (mime-type (notmuch-show-mime-type part))
1007 (nth (plist-get part :id))
1008 (long (and (notmuch-match-content-type mime-type "text/*")
1009 (> notmuch-show-max-text-part-size 0)
1010 (> (length (plist-get part :content))
1011 notmuch-show-max-text-part-size)))
1013 ;; This default header-p function omits the part button for
1014 ;; the first (or only) part if this is text/plain.
1015 (button (and (funcall notmuch-show-insert-header-p-function part hide)
1016 (notmuch-show-insert-part-header
1018 (and content-type (downcase content-type))
1019 (plist-get part :filename))))
1020 ;; Hide the part initially if HIDE is t, or if it is too long
1021 ;; and we have a button to allow toggling.
1022 (show-part (not (or (equal hide t)
1023 (and long button))))
1024 (content-beg (point)))
1025 ;; Store the computed mime-type for later use (e.g. by attachment handlers).
1026 (plist-put part :computed-type mime-type)
1028 (notmuch-show-insert-bodypart-internal msg part mime-type nth depth button)
1030 (button-put button :notmuch-lazy-part
1031 (list msg part mime-type nth depth button))))
1032 ;; Some of the body part handlers leave point somewhere up in the
1033 ;; part, so we make sure that we're down at the end.
1034 (goto-char (point-max))
1035 ;; Ensure that the part ends with a carriage return.
1038 ;; We do not create the overlay for hidden (lazy) parts until
1039 ;; they are inserted.
1041 (notmuch-show-create-part-overlays button content-beg (point))
1043 (notmuch-show-toggle-part-invisibility button)))
1044 (notmuch-show-record-part-information part beg (point))))
1046 (defun notmuch-show-insert-body (msg body depth)
1047 "Insert the body BODY at depth DEPTH in the current thread."
1048 ;; Register all content IDs for this message. According to RFC
1049 ;; 2392, content IDs are *global*, but it's okay if an MUA treats
1050 ;; them as only global within a message.
1051 (notmuch-show--register-cids msg (car body))
1052 (mapc (lambda (part) (notmuch-show-insert-bodypart msg part depth)) body))
1054 (defun notmuch-show-make-symbol (type)
1055 (make-symbol (concat "notmuch-show-" type)))
1057 (defun notmuch-show-strip-re (string)
1058 (replace-regexp-in-string "^\\([Rr]e: *\\)+" "" string))
1060 (defvar notmuch-show-previous-subject "")
1061 (make-variable-buffer-local 'notmuch-show-previous-subject)
1063 (defun notmuch-show-insert-msg (msg depth)
1064 "Insert the message MSG at depth DEPTH in the current thread."
1065 (let* ((headers (plist-get msg :headers))
1066 ;; Indentation causes the buffer offset of the start/end
1067 ;; points to move, so we must use markers.
1068 message-start message-end
1069 content-start content-end
1070 headers-start headers-end
1071 (bare-subject (notmuch-show-strip-re (plist-get headers :Subject))))
1072 (setq message-start (point-marker))
1073 (notmuch-show-insert-headerline headers
1074 (or (and notmuch-show-relative-dates
1075 (plist-get msg :date_relative))
1076 (plist-get headers :Date))
1077 (plist-get msg :tags) depth)
1078 (setq content-start (point-marker))
1079 ;; Set `headers-start' to point after the 'Subject:' header to be
1080 ;; compatible with the existing implementation. This just sets it
1081 ;; to after the first header.
1082 (notmuch-show-insert-headers headers)
1084 (goto-char content-start)
1085 ;; If the subject of this message is the same as that of the
1086 ;; previous message, don't display it when this message is
1088 (unless (string= notmuch-show-previous-subject bare-subject)
1090 (setq headers-start (point-marker)))
1091 (setq headers-end (point-marker))
1092 (setq notmuch-show-previous-subject bare-subject)
1093 ;; A blank line between the headers and the body.
1095 (notmuch-show-insert-body msg (plist-get msg :body)
1096 (if notmuch-show-indent-content depth 0))
1097 ;; Ensure that the body ends with a newline.
1100 (setq content-end (point-marker))
1101 ;; Indent according to the depth in the thread.
1102 (when notmuch-show-indent-content
1103 (indent-rigidly content-start
1105 (* notmuch-show-indent-messages-width depth)))
1106 (setq message-end (point-max-marker))
1107 ;; Save the extents of this message over the whole text of the
1109 (put-text-property message-start message-end
1110 :notmuch-message-extent
1111 (cons message-start message-end))
1112 ;; Create overlays used to control visibility
1113 (plist-put msg :headers-overlay (make-overlay headers-start headers-end))
1114 (plist-put msg :message-overlay (make-overlay headers-start content-end))
1115 (plist-put msg :depth depth)
1116 ;; Save the properties for this message. Currently this saves the
1117 ;; entire message (augmented it with other stuff), which seems
1118 ;; like overkill. We might save a reduced subset (for example, not
1120 (notmuch-show-set-message-properties msg)
1121 ;; Set header visibility.
1122 (notmuch-show-headers-visible msg notmuch-message-headers-visible)
1123 ;; Message visibility depends on whether it matched the search
1125 (notmuch-show-message-visible msg (and (plist-get msg :match)
1126 (not (plist-get msg :excluded))))))
1130 (defun notmuch-show-toggle-process-crypto ()
1131 "Toggle the processing of cryptographic MIME parts."
1133 (setq notmuch-show-process-crypto (not notmuch-show-process-crypto))
1134 (message (if notmuch-show-process-crypto
1135 "Processing cryptographic MIME parts."
1136 "Not processing cryptographic MIME parts."))
1137 (notmuch-show-refresh-view))
1139 (defun notmuch-show-toggle-elide-non-matching ()
1140 "Toggle the display of non-matching messages."
1142 (setq notmuch-show-elide-non-matching-messages
1143 (not notmuch-show-elide-non-matching-messages))
1144 (message (if notmuch-show-elide-non-matching-messages
1145 "Showing matching messages only."
1146 "Showing all messages."))
1147 (notmuch-show-refresh-view))
1149 (defun notmuch-show-toggle-thread-indentation ()
1150 "Toggle the indentation of threads."
1152 (setq notmuch-show-indent-content (not notmuch-show-indent-content))
1153 (message (if notmuch-show-indent-content
1154 "Content is indented."
1155 "Content is not indented."))
1156 (notmuch-show-refresh-view))
1158 ;;; Main insert functions
1160 (defun notmuch-show-insert-tree (tree depth)
1161 "Insert the message tree TREE at depth DEPTH in the current thread."
1162 (let ((msg (car tree))
1163 (replies (cadr tree)))
1164 ;; We test whether there is a message or just some replies.
1166 (notmuch-show-insert-msg msg depth))
1167 (notmuch-show-insert-thread replies (1+ depth))))
1169 (defun notmuch-show-insert-thread (thread depth)
1170 "Insert the thread THREAD at depth DEPTH in the current forest."
1171 (mapc (lambda (tree) (notmuch-show-insert-tree tree depth)) thread))
1173 (defun notmuch-show-insert-forest (forest)
1174 "Insert the forest of threads FOREST."
1175 (mapc (lambda (thread) (notmuch-show-insert-thread thread 0)) forest))
1179 (defvar notmuch-id-regexp
1181 ;; Match the id: prefix only if it begins a word (to disallow, for
1182 ;; example, matching cid:).
1184 ;; If the term starts with a ", then parse Xapian's quoted boolean
1185 ;; term syntax, which allows for anything as long as embedded
1186 ;; double quotes escaped by doubling them. We also disallow
1187 ;; newlines (which Xapian allows) to prevent runaway terms.
1188 "\"\\([^\"\n]\\|\"\"\\)*\""
1189 ;; Otherwise, parse Xapian's unquoted syntax, which goes up to the
1190 ;; next space or ). We disallow [.,;] as the last character
1191 ;; because these are probably part of the surrounding text, and not
1192 ;; part of the id. This doesn't match single character ids; meh.
1193 "\\|[^\"[:space:])][^[:space:])]*[^])[:space:].,:;?!]"
1195 "The regexp used to match id: links in messages.")
1197 (defvar notmuch-mid-regexp
1198 ;; goto-address-url-regexp matched cid: links, which have the same
1199 ;; grammar as the message ID part of a mid: link. Construct the
1200 ;; regexp using the same technique as goto-address-url-regexp.
1201 (concat "\\<mid:\\(" thing-at-point-url-path-regexp "\\)")
1202 "The regexp used to match mid: links in messages.
1206 (defun notmuch-show-buttonise-links (start end)
1207 "Buttonise URLs and mail addresses between START and END.
1209 This also turns id:\"<message id>\"-parts and mid: links into
1210 buttons for a corresponding notmuch search."
1211 (goto-address-fontify-region start end)
1214 (beg-line (progn (goto-char start) (line-beginning-position)))
1215 (end-line (progn (goto-char end) (line-end-position))))
1216 (goto-char beg-line)
1217 (while (re-search-forward notmuch-id-regexp end-line t)
1218 (push (list (match-beginning 0) (match-end 0)
1219 (match-string-no-properties 0)) links))
1220 (goto-char beg-line)
1221 (while (re-search-forward notmuch-mid-regexp end-line t)
1222 (let* ((mid-cid (match-string-no-properties 1))
1223 (mid (save-match-data
1224 (string-match "^[^/]*" mid-cid)
1225 (url-unhex-string (match-string 0 mid-cid)))))
1226 (push (list (match-beginning 0) (match-end 0)
1227 (notmuch-id-to-query mid)) links)))
1228 (pcase-dolist (`(,beg ,end ,link) links)
1229 ;; Remove the overlay created by goto-address-mode
1230 (remove-overlays beg end 'goto-address t)
1231 (make-text-button beg end
1232 :type 'notmuch-button-type
1233 'action `(lambda (arg)
1234 (notmuch-show ,link current-prefix-arg))
1236 'help-echo "Mouse-1, RET: search for this message"
1237 'face goto-address-mail-face)))))
1242 (defun notmuch-show (thread-id &optional elide-toggle parent-buffer query-context buffer-name)
1243 "Run \"notmuch show\" with the given thread ID and display results.
1245 ELIDE-TOGGLE, if non-nil, inverts the default elide behavior.
1247 The optional PARENT-BUFFER is the notmuch-search buffer from
1248 which this notmuch-show command was executed, (so that the
1249 next thread from that buffer can be show when done with this
1252 The optional QUERY-CONTEXT is a notmuch search term. Only
1253 messages from the thread matching this search term are shown if
1256 The optional BUFFER-NAME provides the name of the buffer in
1257 which the message thread is shown. If it is nil (which occurs
1258 when the command is called interactively) the argument to the
1261 Returns the buffer containing the messages, or NIL if no messages
1263 (interactive "sNotmuch show: \nP")
1264 (let ((buffer-name (generate-new-buffer-name
1266 (concat "*notmuch-" thread-id "*"))))
1267 ;; We override mm-inline-override-types to stop application/*
1268 ;; parts from being displayed unless the user has customized
1270 (mm-inline-override-types
1271 (if (equal mm-inline-override-types
1272 (eval (car (get 'mm-inline-override-types 'standard-value))))
1273 (cons "application/*" mm-inline-override-types)
1274 mm-inline-override-types)))
1275 (pop-to-buffer-same-window (get-buffer-create buffer-name))
1276 ;; No need to track undo information for this buffer.
1277 (setq buffer-undo-list t)
1279 ;; Set various buffer local variables to their appropriate initial
1280 ;; state. Do this after enabling `notmuch-show-mode' so that they
1281 ;; aren't wiped out.
1282 (setq notmuch-show-thread-id thread-id)
1283 (setq notmuch-show-parent-buffer parent-buffer)
1284 (setq notmuch-show-query-context
1285 (if (or (string= query-context "")
1286 (string= query-context "*"))
1289 (setq notmuch-show-process-crypto notmuch-crypto-process-mime)
1290 ;; If `elide-toggle', invert the default value.
1291 (setq notmuch-show-elide-non-matching-messages
1293 (not notmuch-show-only-matching-messages)
1294 notmuch-show-only-matching-messages))
1295 (add-hook 'post-command-hook #'notmuch-show-command-hook nil t)
1296 (jit-lock-register #'notmuch-show-buttonise-links)
1297 (notmuch-tag-clear-cache)
1298 (let ((inhibit-read-only t))
1299 (if (notmuch-show--build-buffer)
1300 ;; Messages were inserted into the buffer.
1302 ;; No messages were inserted - presumably none matched the
1304 (kill-buffer (current-buffer))
1306 (message "No messages matched the query!")
1309 (defun notmuch-show--build-queries (thread context)
1310 "Return a list of queries to try for this search.
1312 THREAD and CONTEXT are both strings, though CONTEXT may be nil.
1313 When CONTEXT is not nil, the first query is the conjunction of it
1314 and THREAD. The next query is THREAD alone, and serves as a
1315 fallback if the prior matches no messages."
1317 (push (list thread) queries)
1319 (push (list thread "and (" context ")") queries))
1322 (defun notmuch-show--build-buffer (&optional state)
1323 "Display messages matching the current buffer context.
1325 Apply the previously saved STATE if supplied, otherwise show the
1326 first relevant message.
1328 If no messages match the query return NIL."
1329 (let* ((cli-args (list "--exclude=false"))
1330 (cli-args (if notmuch-show-elide-non-matching-messages (cons "--entire-thread=false" cli-args) cli-args))
1331 ;; "part 0 is the whole message (headers and body)" notmuch-show(1)
1332 (cli-args (if notmuch-show-single-message (cons "--part=0" cli-args) cli-args))
1333 (queries (notmuch-show--build-queries
1334 notmuch-show-thread-id notmuch-show-query-context))
1336 ;; Must be reset every time we are going to start inserting
1337 ;; messages into the buffer.
1338 (notmuch-show-previous-subject ""))
1339 ;; Use results from the first query that returns some.
1340 (while (and (not forest) queries)
1341 (setq forest (notmuch-query-get-threads
1342 (append cli-args (list "'") (car queries) (list "'"))))
1343 (when (and forest notmuch-show-single-message)
1344 (setq forest (list (list (list forest)))))
1345 (setq queries (cdr queries)))
1347 (notmuch-show-insert-forest forest)
1348 ;; Store the original tags for each message so that we can
1351 (lambda () (notmuch-show-set-prop :orig-tags (notmuch-show-get-tags))))
1352 ;; Set the header line to the subject of the first message.
1353 (when notmuch-show-header-line
1354 (setq header-line-format
1355 (replace-regexp-in-string "%" "%%"
1357 (notmuch-show-strip-re
1358 (notmuch-show-get-subject))))))
1359 (run-hooks 'notmuch-show-hook)
1361 (notmuch-show-apply-state state)
1362 ;; With no state to apply, just go to the first message.
1363 (notmuch-show-goto-first-wanted-message)))
1364 ;; Report back to the caller whether any messages matched.
1369 (defun notmuch-show-capture-state ()
1370 "Capture the state of the current buffer.
1373 - the list of open messages,
1374 - the combination of current message id with/for each visible window."
1375 (let* ((win-list (get-buffer-window-list (current-buffer) nil t))
1376 (win-id-combo (mapcar (lambda (win)
1377 (with-selected-window win
1378 (list win (notmuch-show-get-message-id))))
1380 (list win-id-combo (notmuch-show-get-message-ids-for-open-messages))))
1382 (defun notmuch-show-get-query ()
1383 "Return the current query in this show buffer."
1384 (if notmuch-show-query-context
1385 (concat notmuch-show-thread-id
1387 notmuch-show-query-context
1389 notmuch-show-thread-id))
1391 (defun notmuch-show-goto-message (msg-id)
1392 "Go to message with msg-id."
1393 (goto-char (point-min))
1394 (unless (cl-loop if (string= msg-id (notmuch-show-get-message-id))
1396 until (not (notmuch-show-goto-message-next)))
1397 (goto-char (point-min))
1398 (message "Message-id not found."))
1399 (notmuch-show-message-adjust))
1401 (defun notmuch-show-apply-state (state)
1402 "Apply STATE to the current buffer.
1405 - opening the messages previously opened,
1406 - closing all other messages,
1407 - moving to the correct current message in every displayed window."
1408 (let ((win-msg-alist (car state))
1409 (open (cadr state)))
1410 ;; Open those that were open.
1411 (goto-char (point-min))
1412 (cl-loop do (notmuch-show-message-visible
1413 (notmuch-show-get-message-properties)
1414 (member (notmuch-show-get-message-id) open))
1415 until (not (notmuch-show-goto-message-next)))
1416 (dolist (win-msg-pair win-msg-alist)
1417 (with-selected-window (car win-msg-pair)
1418 ;; Go to the previously open message in this window
1419 (notmuch-show-goto-message (cadr win-msg-pair))))))
1421 (defun notmuch-show-refresh-view (&optional reset-state)
1422 "Refresh the current view.
1424 Refreshes the current view, observing changes in display
1425 preferences. If invoked with a prefix argument (or RESET-STATE is
1426 non-nil) then the state of the buffer (open/closed messages) is
1427 reset based on the original query."
1429 (let ((inhibit-read-only t)
1430 (state (unless reset-state
1431 (notmuch-show-capture-state))))
1432 ;; `erase-buffer' does not seem to remove overlays, which can lead
1433 ;; to weird effects such as remaining images, so remove them
1437 (unless (notmuch-show--build-buffer state)
1438 ;; No messages were inserted.
1439 (kill-buffer (current-buffer))
1441 (message "Refreshing the buffer resulted in no messages!"))))
1445 (defvar notmuch-show-stash-map
1446 (let ((map (make-sparse-keymap)))
1447 (define-key map "c" 'notmuch-show-stash-cc)
1448 (define-key map "d" 'notmuch-show-stash-date)
1449 (define-key map "F" 'notmuch-show-stash-filename)
1450 (define-key map "f" 'notmuch-show-stash-from)
1451 (define-key map "i" 'notmuch-show-stash-message-id)
1452 (define-key map "I" 'notmuch-show-stash-message-id-stripped)
1453 (define-key map "s" 'notmuch-show-stash-subject)
1454 (define-key map "T" 'notmuch-show-stash-tags)
1455 (define-key map "t" 'notmuch-show-stash-to)
1456 (define-key map "l" 'notmuch-show-stash-mlarchive-link)
1457 (define-key map "L" 'notmuch-show-stash-mlarchive-link-and-go)
1458 (define-key map "G" 'notmuch-show-stash-git-send-email)
1459 (define-key map "?" 'notmuch-subkeymap-help)
1461 "Submap for stash commands.")
1462 (fset 'notmuch-show-stash-map notmuch-show-stash-map)
1464 (defvar notmuch-show-part-map
1465 (let ((map (make-sparse-keymap)))
1466 (define-key map "s" 'notmuch-show-save-part)
1467 (define-key map "v" 'notmuch-show-view-part)
1468 (define-key map "o" 'notmuch-show-interactively-view-part)
1469 (define-key map "|" 'notmuch-show-pipe-part)
1470 (define-key map "m" 'notmuch-show-choose-mime-of-part)
1471 (define-key map "?" 'notmuch-subkeymap-help)
1473 "Submap for part commands.")
1474 (fset 'notmuch-show-part-map notmuch-show-part-map)
1476 (defvar notmuch-show-mode-map
1477 (let ((map (make-sparse-keymap)))
1478 (set-keymap-parent map notmuch-common-keymap)
1479 (define-key map "Z" 'notmuch-tree-from-show-current-query)
1480 (define-key map "U" 'notmuch-unthreaded-from-show-current-query)
1481 (define-key map (kbd "<C-tab>") 'widget-backward)
1482 (define-key map (kbd "M-TAB") 'notmuch-show-previous-button)
1483 (define-key map (kbd "<backtab>") 'notmuch-show-previous-button)
1484 (define-key map (kbd "TAB") 'notmuch-show-next-button)
1485 (define-key map "f" 'notmuch-show-forward-message)
1486 (define-key map "F" 'notmuch-show-forward-open-messages)
1487 (define-key map "b" 'notmuch-show-resend-message)
1488 (define-key map "l" 'notmuch-show-filter-thread)
1489 (define-key map "r" 'notmuch-show-reply-sender)
1490 (define-key map "R" 'notmuch-show-reply)
1491 (define-key map "|" 'notmuch-show-pipe-message)
1492 (define-key map "w" 'notmuch-show-save-attachments)
1493 (define-key map "V" 'notmuch-show-view-raw-message)
1494 (define-key map "e" 'notmuch-show-resume-message)
1495 (define-key map "c" 'notmuch-show-stash-map)
1496 (define-key map "h" 'notmuch-show-toggle-visibility-headers)
1497 (define-key map "k" 'notmuch-tag-jump)
1498 (define-key map "*" 'notmuch-show-tag-all)
1499 (define-key map "-" 'notmuch-show-remove-tag)
1500 (define-key map "+" 'notmuch-show-add-tag)
1501 (define-key map "X" 'notmuch-show-archive-thread-then-exit)
1502 (define-key map "x" 'notmuch-show-archive-message-then-next-or-exit)
1503 (define-key map "A" 'notmuch-show-archive-thread-then-next)
1504 (define-key map "a" 'notmuch-show-archive-message-then-next-or-next-thread)
1505 (define-key map "N" 'notmuch-show-next-message)
1506 (define-key map "P" 'notmuch-show-previous-message)
1507 (define-key map "n" 'notmuch-show-next-open-message)
1508 (define-key map "p" 'notmuch-show-previous-open-message)
1509 (define-key map (kbd "M-n") 'notmuch-show-next-thread-show)
1510 (define-key map (kbd "M-p") 'notmuch-show-previous-thread-show)
1511 (define-key map (kbd "DEL") 'notmuch-show-rewind)
1512 (define-key map " " 'notmuch-show-advance-and-archive)
1513 (define-key map (kbd "M-RET") 'notmuch-show-open-or-close-all)
1514 (define-key map (kbd "RET") 'notmuch-show-toggle-message)
1515 (define-key map "#" 'notmuch-show-print-message)
1516 (define-key map "!" 'notmuch-show-toggle-elide-non-matching)
1517 (define-key map "$" 'notmuch-show-toggle-process-crypto)
1518 (define-key map "<" 'notmuch-show-toggle-thread-indentation)
1519 (define-key map "t" 'toggle-truncate-lines)
1520 (define-key map "." 'notmuch-show-part-map)
1521 (define-key map "B" 'notmuch-show-browse-urls)
1523 "Keymap for \"notmuch show\" buffers.")
1527 (define-derived-mode notmuch-show-mode fundamental-mode "notmuch-show"
1528 "Major mode for viewing a thread with notmuch.
1530 This buffer contains the results of the \"notmuch show\" command
1531 for displaying a single thread of email from your email archives.
1533 By default, various components of email messages, (citations,
1534 signatures, already-read messages), are hidden. You can make
1535 these parts visible by clicking with the mouse button or by
1536 pressing RET after positioning the cursor on a hidden part, (for
1537 which \\[notmuch-show-next-button] and \\[notmuch-show-previous-button] are helpful).
1539 Reading the thread sequentially is well-supported by pressing
1540 \\[notmuch-show-advance-and-archive]. This will scroll the current message (if necessary), advance
1541 to the next message, or advance to the next thread (if already on
1542 the last message of a thread).
1544 Other commands are available to read or manipulate the thread
1545 more selectively, (such as '\\[notmuch-show-next-message]' and '\\[notmuch-show-previous-message]' to advance to messages
1546 without removing any tags, and '\\[notmuch-show-archive-thread]' to archive an entire thread
1547 without scrolling through with \\[notmuch-show-advance-and-archive]).
1549 You can add or remove arbitrary tags from the current message with
1550 '\\[notmuch-show-add-tag]' or '\\[notmuch-show-remove-tag]'.
1552 All currently available key bindings:
1554 \\{notmuch-show-mode-map}"
1555 (setq notmuch-buffer-refresh-function #'notmuch-show-refresh-view)
1556 (setq buffer-read-only t)
1557 (setq truncate-lines t)
1558 (setq imenu-prev-index-position-function
1559 #'notmuch-show-imenu-prev-index-position-function)
1560 (setq imenu-extract-index-name-function
1561 #'notmuch-show-imenu-extract-index-name-function))
1565 (defun notmuch-tree-from-show-current-query ()
1566 "Call notmuch tree with the current query."
1568 (notmuch-tree notmuch-show-thread-id
1569 notmuch-show-query-context
1570 (notmuch-show-get-message-id)))
1572 (defun notmuch-unthreaded-from-show-current-query ()
1573 "Call notmuch unthreaded with the current query."
1575 (notmuch-unthreaded notmuch-show-thread-id
1576 notmuch-show-query-context
1577 (notmuch-show-get-message-id)))
1579 ;;; Movement related functions.
1581 (defun notmuch-show-move-to-message-top ()
1582 (goto-char (notmuch-show-message-top)))
1584 (defun notmuch-show-move-to-message-bottom ()
1585 (goto-char (notmuch-show-message-bottom)))
1587 ;; There's some strangeness here where a text property applied to a
1588 ;; region a->b is not found when point is at b. We walk backwards
1589 ;; until finding the property.
1590 (defun notmuch-show-message-extent ()
1591 "Return a cons cell containing the start and end buffer offset
1592 of the current message."
1595 (while (not (setq r (get-text-property (point) :notmuch-message-extent)))
1599 (defun notmuch-show-message-top ()
1600 (car (notmuch-show-message-extent)))
1602 (defun notmuch-show-message-bottom ()
1603 (cdr (notmuch-show-message-extent)))
1605 (defun notmuch-show-goto-message-next ()
1606 (let ((start (point)))
1607 (notmuch-show-move-to-message-bottom)
1613 (defun notmuch-show-goto-message-previous ()
1614 (notmuch-show-move-to-message-top)
1618 (notmuch-show-move-to-message-top)
1621 (defun notmuch-show-mapc (function)
1622 "Iterate through all messages in the current thread with
1623 `notmuch-show-goto-message-next' and call FUNCTION for side
1626 (goto-char (point-min))
1627 (cl-loop do (funcall function)
1628 while (notmuch-show-goto-message-next))))
1630 ;;; Functions relating to the visibility of messages and their components.
1632 (defun notmuch-show-message-visible (props visible-p)
1633 (overlay-put (plist-get props :message-overlay) 'invisible (not visible-p))
1634 (notmuch-show-set-prop :message-visible visible-p props))
1636 (defun notmuch-show-headers-visible (props visible-p)
1637 (overlay-put (plist-get props :headers-overlay) 'invisible (not visible-p))
1638 (notmuch-show-set-prop :headers-visible visible-p props))
1640 ;;; Functions for setting and getting attributes of the current message.
1642 (defun notmuch-show-set-message-properties (props)
1644 (notmuch-show-move-to-message-top)
1645 (put-text-property (point) (+ (point) 1)
1646 :notmuch-message-properties props)))
1648 (defun notmuch-show-get-message-properties ()
1649 "Return the properties of the current message as a plist.
1651 Some useful entries are:
1652 :headers - Property list containing the headers :Date, :Subject, :From, etc.
1653 :body - Body of the message
1654 :tags - Tags for this message"
1656 (notmuch-show-move-to-message-top)
1657 (get-text-property (point) :notmuch-message-properties)))
1659 (defun notmuch-show-get-part-properties ()
1660 "Return the properties of the innermost part containing point.
1662 This is the part property list retrieved from the CLI. Signals
1663 an error if there is no part containing point."
1664 (or (get-text-property (point) :notmuch-part)
1665 (error "No message part here")))
1667 (defun notmuch-show-set-prop (prop val &optional props)
1668 (let ((inhibit-read-only t)
1670 (notmuch-show-get-message-properties))))
1671 (plist-put props prop val)
1672 (notmuch-show-set-message-properties props)))
1674 (defun notmuch-show-get-prop (prop &optional props)
1675 "Get property PROP from current message in show or tree mode.
1677 It gets property PROP from PROPS or, if PROPS is nil, the current
1678 message in either tree or show. This means that several utility
1679 functions in notmuch-show can be used directly by notmuch-tree as
1680 they just need the correct message properties."
1681 (plist-get (or props
1682 (cond ((eq major-mode 'notmuch-show-mode)
1683 (notmuch-show-get-message-properties))
1684 ((eq major-mode 'notmuch-tree-mode)
1685 (notmuch-tree-get-message-properties))
1689 (defun notmuch-show-get-message-id (&optional bare)
1690 "Return an id: query for the Message-Id of the current message.
1692 If optional argument BARE is non-nil, return
1693 the Message-Id without id: prefix and escaping."
1695 (notmuch-show-get-prop :id)
1696 (notmuch-id-to-query (notmuch-show-get-prop :id))))
1698 (defun notmuch-show-get-messages-ids ()
1699 "Return all id: queries of messages in the current thread."
1700 (let ((message-ids))
1702 (lambda () (push (notmuch-show-get-message-id) message-ids)))
1705 (defun notmuch-show-get-messages-ids-search ()
1706 "Return a search string for all message ids of messages in the
1708 (mapconcat 'identity (notmuch-show-get-messages-ids) " or "))
1710 ;; dme: Would it make sense to use a macro for many of these?
1712 ;; XXX TODO figure out what to do about multiple filenames
1713 (defun notmuch-show-get-filename ()
1714 "Return the filename of the current message."
1715 (car (notmuch-show-get-prop :filename)))
1717 (defun notmuch-show-get-header (header &optional props)
1718 "Return the named header of the current message, if any."
1719 (plist-get (notmuch-show-get-prop :headers props) header))
1721 (defun notmuch-show-get-cc ()
1722 (notmuch-show-get-header :Cc))
1724 (defun notmuch-show-get-date ()
1725 (notmuch-show-get-header :Date))
1727 (defun notmuch-show-get-timestamp ()
1728 (notmuch-show-get-prop :timestamp))
1730 (defun notmuch-show-get-from ()
1731 (notmuch-show-get-header :From))
1733 (defun notmuch-show-get-subject ()
1734 (notmuch-show-get-header :Subject))
1736 (defun notmuch-show-get-to ()
1737 (notmuch-show-get-header :To))
1739 (defun notmuch-show-get-depth ()
1740 (notmuch-show-get-prop :depth))
1742 (defun notmuch-show-set-tags (tags)
1743 "Set the tags of the current message."
1744 (notmuch-show-set-prop :tags tags)
1745 (notmuch-show-update-tags tags))
1747 (defun notmuch-show-get-tags ()
1748 "Return the tags of the current message."
1749 (notmuch-show-get-prop :tags))
1751 (defun notmuch-show-message-visible-p ()
1752 "Is the current message visible?"
1753 (notmuch-show-get-prop :message-visible))
1755 (defun notmuch-show-headers-visible-p ()
1756 "Are the headers of the current message visible?"
1757 (notmuch-show-get-prop :headers-visible))
1759 (put 'notmuch-show-mark-read 'notmuch-prefix-doc
1760 "Mark the current message as unread.")
1761 (defun notmuch-show-mark-read (&optional unread)
1762 "Mark the current message as read.
1764 Mark the current message as read by applying the tag changes in
1765 `notmuch-show-mark-read-tags' to it (remove the \"unread\" tag by
1766 default). If a prefix argument is given, the message will be
1767 marked as unread, i.e. the tag changes in
1768 `notmuch-show-mark-read-tags' will be reversed."
1770 (when notmuch-show-mark-read-tags
1771 (apply 'notmuch-show-tag-message
1772 (notmuch-tag-change-list notmuch-show-mark-read-tags unread))))
1774 (defun notmuch-show-seen-current-message (_start _end)
1775 "Mark the current message read if it is open.
1777 We only mark it read once: if it is changed back then that is a
1778 user decision and we should not override it."
1779 (when (and (notmuch-show-message-visible-p)
1780 (not (notmuch-show-get-prop :seen)))
1781 (notmuch-show-mark-read)
1782 (notmuch-show-set-prop :seen t)))
1784 (defvar notmuch-show--seen-has-errored nil)
1785 (make-variable-buffer-local 'notmuch-show--seen-has-errored)
1787 (defun notmuch-show-command-hook ()
1788 (when (eq major-mode 'notmuch-show-mode)
1789 ;; We need to redisplay to get window-start and window-end correct.
1793 (funcall notmuch-show-mark-read-function (window-start) (window-end))
1795 (unless notmuch-show--seen-has-errored
1796 (setq notmuch-show--seen-has-errored t)
1797 (setq header-line-format
1798 (concat header-line-format
1800 " [some mark read tag changes may have failed]"
1801 'face font-lock-warning-face)))))))))
1803 (defun notmuch-show-filter-thread (query)
1804 "Filter or LIMIT the current thread based on a new query string.
1806 Reshows the current thread with matches defined by the new query-string."
1807 (interactive (list (notmuch-read-query "Filter thread: ")))
1808 (let ((msg-id (notmuch-show-get-message-id)))
1809 (setq notmuch-show-query-context (if (string-empty-p query) nil query))
1810 (notmuch-show-refresh-view t)
1811 (notmuch-show-goto-message msg-id)))
1813 ;;; Functions for getting attributes of several messages in the current thread.
1815 (defun notmuch-show-get-message-ids-for-open-messages ()
1816 "Return a list of all id: queries for open messages in the current thread."
1818 (let (message-ids done)
1819 (goto-char (point-min))
1821 (when (notmuch-show-message-visible-p)
1823 (append message-ids (list (notmuch-show-get-message-id)))))
1824 (setq done (not (notmuch-show-goto-message-next))))
1827 ;;; Commands typically bound to keys.
1829 (defun notmuch-show-advance ()
1830 "Advance through thread.
1832 If the current message in the thread is not yet fully visible,
1833 scroll by a near screenful to read more of the message.
1835 Otherwise, (the end of the current message is already within the
1836 current window), advance to the next open message."
1838 (let* ((end-of-this-message (notmuch-show-message-bottom))
1839 (visible-end-of-this-message (1- end-of-this-message))
1841 (while (invisible-p visible-end-of-this-message)
1842 (setq visible-end-of-this-message
1844 (1- (previous-single-char-property-change
1845 visible-end-of-this-message 'invisible)))))
1847 ;; Ideally we would test `end-of-this-message' against the result
1848 ;; of `window-end', but that doesn't account for the fact that
1849 ;; the end of the message might be hidden.
1850 ((and visible-end-of-this-message
1851 (> visible-end-of-this-message (window-end)))
1852 ;; The bottom of this message is not visible - scroll.
1854 ((not (= end-of-this-message (point-max)))
1855 ;; This is not the last message - move to the next visible one.
1856 (notmuch-show-next-open-message))
1857 ((not (= (point) (point-max)))
1858 ;; This is the last message, but the cursor is not at the end of
1859 ;; the buffer. Move it there.
1860 (goto-char (point-max)))
1862 ;; This is the last message - change the return value
1866 (defun notmuch-show-advance-and-archive ()
1867 "Advance through thread and archive.
1869 This command is intended to be one of the simplest ways to
1870 process a thread of email. It works exactly like
1871 notmuch-show-advance, in that it scrolls through messages in a
1872 show buffer, except that when it gets to the end of the buffer it
1873 archives the entire current thread, (apply changes in
1874 `notmuch-archive-tags'), kills the buffer, and displays the next
1875 thread from the search from which this thread was originally
1878 (when (notmuch-show-advance)
1879 (notmuch-show-archive-thread-then-next)))
1881 (defun notmuch-show-rewind ()
1882 "Backup through the thread (reverse scrolling compared to \
1883 \\[notmuch-show-advance-and-archive]).
1885 Specifically, if the beginning of the previous email is fewer
1886 than `window-height' lines from the current point, move to it
1887 just like `notmuch-show-previous-message'.
1889 Otherwise, just scroll down a screenful of the current message.
1891 This command does not modify any message tags, (it does not undo
1892 any effects from previous calls to
1893 `notmuch-show-advance-and-archive'."
1895 (let ((start-of-message (notmuch-show-message-top))
1896 (start-of-window (window-start)))
1898 ;; Either this message is properly aligned with the start of the
1899 ;; window or the start of this message is not visible on the
1901 ((or (= start-of-message start-of-window)
1902 (< start-of-message start-of-window))
1904 ;; If a small number of lines from the previous message are
1905 ;; visible, realign so that the top of the current message is at
1906 ;; the top of the screen.
1907 (when (<= (count-screen-lines (window-start) start-of-message)
1908 next-screen-context-lines)
1909 (goto-char (notmuch-show-message-top))
1910 (notmuch-show-message-adjust))
1911 ;; Move to the top left of the window.
1912 (goto-char (window-start)))
1914 ;; Move to the previous message.
1915 (notmuch-show-previous-message)))))
1917 (put 'notmuch-show-reply 'notmuch-prefix-doc "... and prompt for sender")
1918 (defun notmuch-show-reply (&optional prompt-for-sender)
1919 "Reply to the sender and all recipients of the current message."
1921 (notmuch-mua-new-reply (notmuch-show-get-message-id) prompt-for-sender t))
1923 (put 'notmuch-show-reply-sender 'notmuch-prefix-doc "... and prompt for sender")
1924 (defun notmuch-show-reply-sender (&optional prompt-for-sender)
1925 "Reply to the sender of the current message."
1927 (notmuch-mua-new-reply (notmuch-show-get-message-id) prompt-for-sender nil))
1929 (put 'notmuch-show-forward-message 'notmuch-prefix-doc
1930 "... and prompt for sender")
1931 (defun notmuch-show-forward-message (&optional prompt-for-sender)
1932 "Forward the current message."
1934 (notmuch-mua-new-forward-messages (list (notmuch-show-get-message-id))
1937 (put 'notmuch-show-forward-open-messages 'notmuch-prefix-doc
1938 "... and prompt for sender")
1939 (defun notmuch-show-forward-open-messages (&optional prompt-for-sender)
1940 "Forward the currently open messages."
1942 (let ((open-messages (notmuch-show-get-message-ids-for-open-messages)))
1943 (unless open-messages
1944 (error "No open messages to forward."))
1945 (notmuch-mua-new-forward-messages open-messages prompt-for-sender)))
1947 (defun notmuch-show-resend-message (addresses)
1948 "Resend the current message."
1949 (interactive (list (notmuch-address-from-minibuffer "Resend to: ")))
1950 (when (y-or-n-p (concat "Confirm resend to " addresses " "))
1951 (notmuch-show-view-raw-message)
1952 (message-resend addresses)
1953 (notmuch-bury-or-kill-this-buffer)))
1955 (defun notmuch-show-message-adjust ()
1958 (defun notmuch-show-next-message (&optional pop-at-end)
1959 "Show the next message.
1961 If a prefix argument is given and this is the last message in the
1962 thread, navigate to the next thread in the parent search buffer."
1964 (if (notmuch-show-goto-message-next)
1965 (notmuch-show-message-adjust)
1967 (notmuch-show-next-thread)
1968 (goto-char (point-max)))))
1970 (defun notmuch-show-previous-message ()
1971 "Show the previous message or the start of the current message."
1973 (if (= (point) (notmuch-show-message-top))
1974 (notmuch-show-goto-message-previous)
1975 (notmuch-show-move-to-message-top))
1976 (notmuch-show-message-adjust))
1978 (defun notmuch-show-next-open-message (&optional pop-at-end)
1979 "Show the next open message.
1981 If a prefix argument is given and this is the last open message
1982 in the thread, navigate to the next thread in the parent search
1983 buffer. Return t if there was a next open message in the thread
1984 to show, nil otherwise."
1987 (while (and (setq r (notmuch-show-goto-message-next))
1988 (not (notmuch-show-message-visible-p))))
1990 (notmuch-show-message-adjust)
1992 (notmuch-show-next-thread)
1993 (goto-char (point-max))))
1996 (defun notmuch-show-next-matching-message ()
1997 "Show the next matching message."
2000 (while (and (setq r (notmuch-show-goto-message-next))
2001 (not (notmuch-show-get-prop :match))))
2003 (notmuch-show-message-adjust)
2004 (goto-char (point-max)))))
2006 (defun notmuch-show-open-if-matched ()
2007 "Open a message if it is matched (whether or not excluded)."
2008 (let ((props (notmuch-show-get-message-properties)))
2009 (notmuch-show-message-visible props (plist-get props :match))))
2011 (defun notmuch-show-goto-first-wanted-message ()
2012 "Move to the first open message and mark it read."
2013 (goto-char (point-min))
2014 (unless (notmuch-show-message-visible-p)
2015 (notmuch-show-next-open-message))
2017 ;; There are no matched non-excluded messages so open all matched
2018 ;; (necessarily excluded) messages and go to the first.
2019 (notmuch-show-mapc 'notmuch-show-open-if-matched)
2020 (force-window-update)
2021 (goto-char (point-min))
2022 (unless (notmuch-show-message-visible-p)
2023 (notmuch-show-next-open-message))))
2025 (defun notmuch-show-previous-open-message ()
2026 "Show the previous open message."
2028 (while (and (if (= (point) (notmuch-show-message-top))
2029 (notmuch-show-goto-message-previous)
2030 (notmuch-show-move-to-message-top))
2031 (not (notmuch-show-message-visible-p))))
2032 (notmuch-show-message-adjust))
2034 (defun notmuch-show-view-raw-message ()
2035 "View the original source of the current message."
2037 (let* ((id (notmuch-show-get-message-id))
2038 (buf (get-buffer-create (concat "*notmuch-raw-" id "*")))
2039 (inhibit-read-only t))
2040 (pop-to-buffer-same-window buf)
2042 (let ((coding-system-for-read 'no-conversion))
2043 (notmuch--call-process notmuch-command nil t nil "show" "--format=raw" id))
2044 (goto-char (point-min))
2045 (set-buffer-modified-p nil)
2046 (setq buffer-read-only t)
2047 (view-buffer buf 'kill-buffer-if-not-modified)))
2049 (defun notmuch-show-resume-message ()
2050 "Resume EDITING the current draft message."
2052 (notmuch-draft-resume (notmuch-show-get-message-id)))
2054 (put 'notmuch-show-pipe-message 'notmuch-doc
2055 "Pipe the contents of the current message to a command.")
2056 (put 'notmuch-show-pipe-message 'notmuch-prefix-doc
2057 "Pipe the thread as an mbox to a command.")
2058 (defun notmuch-show-pipe-message (entire-thread command)
2059 "Pipe the contents of the current message (or thread) to COMMAND.
2061 COMMAND will be executed with the raw contents of the current
2062 email message as stdin. Anything printed by the command to stdout
2063 or stderr will appear in the *notmuch-pipe* buffer.
2065 If ENTIRE-THREAD is non-nil (or when invoked with a prefix
2066 argument), COMMAND will receive all open messages in the current
2067 thread (formatted as an mbox) rather than only the current
2069 (interactive (let ((query-string (if current-prefix-arg
2070 "Pipe all open messages to command: "
2071 "Pipe message to command: ")))
2072 (list current-prefix-arg (read-string query-string))))
2073 (let (shell-command)
2076 (concat notmuch-command " show --format=mbox --exclude=false "
2077 (shell-quote-argument
2078 (mapconcat 'identity
2079 (notmuch-show-get-message-ids-for-open-messages)
2083 (concat notmuch-command " show --format=raw "
2084 (shell-quote-argument (notmuch-show-get-message-id))
2086 (let ((cwd default-directory)
2087 (buf (get-buffer-create (concat "*notmuch-pipe*"))))
2088 (with-current-buffer buf
2089 (setq buffer-read-only t)
2090 (let ((inhibit-read-only t))
2092 ;; Use the originating buffer's working directory instead of
2093 ;; that of the pipe buffer.
2095 (let ((exit-code (call-process-shell-command shell-command nil buf)))
2096 (goto-char (point-max))
2097 (set-buffer-modified-p nil)
2098 (unless (zerop exit-code)
2100 (message (format "Command '%s' exited abnormally with code %d"
2101 shell-command exit-code)))))))))
2103 (defun notmuch-show-tag-message (&rest tag-changes)
2104 "Change tags for the current message.
2106 TAG-CHANGES is a list of tag operations for `notmuch-tag'."
2107 (let* ((current-tags (notmuch-show-get-tags))
2108 (new-tags (notmuch-update-tags current-tags tag-changes)))
2109 (unless (equal current-tags new-tags)
2110 (notmuch-tag (notmuch-show-get-message-id) tag-changes)
2111 (notmuch-show-set-tags new-tags))))
2113 (defun notmuch-show-tag (tag-changes)
2114 "Change tags for the current message.
2116 See `notmuch-tag' for information on the format of TAG-CHANGES."
2117 (interactive (list (notmuch-read-tag-changes (notmuch-show-get-tags)
2119 (notmuch-tag (notmuch-show-get-message-id) tag-changes)
2120 (let* ((current-tags (notmuch-show-get-tags))
2121 (new-tags (notmuch-update-tags current-tags tag-changes)))
2122 (unless (equal current-tags new-tags)
2123 (notmuch-show-set-tags new-tags))))
2125 (defun notmuch-show-tag-all (tag-changes)
2126 "Change tags for all messages in the current show buffer.
2128 See `notmuch-tag' for information on the format of TAG-CHANGES."
2132 (lambda () (setq tags (append (notmuch-show-get-tags) tags))))
2133 (notmuch-read-tag-changes tags "Tag thread"))))
2134 (notmuch-tag (notmuch-show-get-messages-ids-search) tag-changes)
2137 (let* ((current-tags (notmuch-show-get-tags))
2138 (new-tags (notmuch-update-tags current-tags tag-changes)))
2139 (unless (equal current-tags new-tags)
2140 (notmuch-show-set-tags new-tags))))))
2142 (defun notmuch-show-add-tag (tag-changes)
2143 "Change tags for the current message (defaulting to add).
2145 Same as `notmuch-show-tag' but sets initial input to '+'."
2147 (list (notmuch-read-tag-changes (notmuch-show-get-tags) "Tag message" "+")))
2148 (notmuch-show-tag tag-changes))
2150 (defun notmuch-show-remove-tag (tag-changes)
2151 "Change tags for the current message (defaulting to remove).
2153 Same as `notmuch-show-tag' but sets initial input to '-'."
2155 (list (notmuch-read-tag-changes (notmuch-show-get-tags) "Tag message" "-")))
2156 (notmuch-show-tag tag-changes))
2158 (defun notmuch-show-toggle-visibility-headers ()
2159 "Toggle the visibility of the current message headers."
2161 (let ((props (notmuch-show-get-message-properties)))
2162 (notmuch-show-headers-visible
2164 (not (plist-get props :headers-visible))))
2165 (force-window-update))
2167 (defun notmuch-show-toggle-message ()
2168 "Toggle the visibility of the current message."
2170 (let ((props (notmuch-show-get-message-properties)))
2171 (notmuch-show-message-visible
2173 (not (plist-get props :message-visible))))
2174 (force-window-update))
2176 (put 'notmuch-show-open-or-close-all 'notmuch-doc "Show all messages.")
2177 (put 'notmuch-show-open-or-close-all 'notmuch-prefix-doc "Hide all messages.")
2178 (defun notmuch-show-open-or-close-all ()
2179 "Set the visibility all of the messages in the current thread.
2181 By default make all of the messages visible. With a prefix
2182 argument, hide all of the messages."
2185 (goto-char (point-min))
2186 (cl-loop do (notmuch-show-message-visible
2187 (notmuch-show-get-message-properties)
2188 (not current-prefix-arg))
2189 until (not (notmuch-show-goto-message-next))))
2190 (force-window-update))
2192 (defun notmuch-show-next-button ()
2193 "Advance point to the next button in the buffer."
2197 (defun notmuch-show-previous-button ()
2198 "Move point back to the previous button in the buffer."
2200 (backward-button 1))
2202 (defun notmuch-show-next-thread (&optional show previous)
2203 "Move to the next item in the search results, if any.
2205 If SHOW is non-nil, open the next item in a show
2206 buffer. Otherwise just highlight the next item in the search
2207 buffer. If PREVIOUS is non-nil, move to the previous item in the
2208 search results instead."
2210 (let ((parent-buffer notmuch-show-parent-buffer))
2211 (notmuch-bury-or-kill-this-buffer)
2212 (when (buffer-live-p parent-buffer)
2213 (switch-to-buffer parent-buffer)
2215 (notmuch-search-previous-thread)
2216 (notmuch-search-next-thread))
2218 (notmuch-search-show-thread)))))
2220 (defun notmuch-show-next-thread-show ()
2221 "Show the next thread in the search results, if any."
2223 (notmuch-show-next-thread t))
2225 (defun notmuch-show-previous-thread-show ()
2226 "Show the previous thread in the search results, if any."
2228 (notmuch-show-next-thread t t))
2230 (put 'notmuch-show-archive-thread 'notmuch-prefix-doc
2231 "Un-archive each message in thread.")
2232 (defun notmuch-show-archive-thread (&optional unarchive)
2233 "Archive each message in thread.
2235 Archive each message currently shown by applying the tag changes
2236 in `notmuch-archive-tags' to each. If a prefix argument is given,
2237 the messages will be \"unarchived\", i.e. the tag changes in
2238 `notmuch-archive-tags' will be reversed.
2240 Note: This command is safe from any race condition of new messages
2241 being delivered to the same thread. It does not archive the
2242 entire thread, but only the messages shown in the current
2245 (when notmuch-archive-tags
2246 (notmuch-show-tag-all
2247 (notmuch-tag-change-list notmuch-archive-tags unarchive))))
2249 (defun notmuch-show-archive-thread-then-next ()
2250 "Archive all messages in the current buffer, then show next thread from search."
2252 (notmuch-show-archive-thread)
2253 (notmuch-show-next-thread t))
2255 (defun notmuch-show-archive-thread-then-exit ()
2256 "Archive all messages in the current buffer, then exit back to search results."
2258 (notmuch-show-archive-thread)
2259 (notmuch-show-next-thread))
2261 (put 'notmuch-show-archive-message 'notmuch-prefix-doc
2262 "Un-archive the current message.")
2263 (defun notmuch-show-archive-message (&optional unarchive)
2264 "Archive the current message.
2266 Archive the current message by applying the tag changes in
2267 `notmuch-archive-tags' to it. If a prefix argument is given, the
2268 message will be \"unarchived\", i.e. the tag changes in
2269 `notmuch-archive-tags' will be reversed."
2271 (when notmuch-archive-tags
2272 (apply 'notmuch-show-tag-message
2273 (notmuch-tag-change-list notmuch-archive-tags unarchive))))
2275 (defun notmuch-show-archive-message-then-next-or-exit ()
2276 "Archive current message, then show next open message in current thread.
2278 If at the last open message in the current thread, then exit back
2281 (notmuch-show-archive-message)
2282 (notmuch-show-next-open-message t))
2284 (defun notmuch-show-archive-message-then-next-or-next-thread ()
2285 "Archive current message, then show next open message in current or next thread.
2287 If at the last open message in the current thread, then show next
2288 thread from search."
2290 (notmuch-show-archive-message)
2291 (unless (notmuch-show-next-open-message)
2292 (notmuch-show-next-thread t)))
2294 (defun notmuch-show-stash-cc ()
2295 "Copy CC field of current message to kill-ring."
2297 (notmuch-common-do-stash (notmuch-show-get-cc)))
2299 (put 'notmuch-show-stash-date 'notmuch-prefix-doc
2300 "Copy timestamp of current message to kill-ring.")
2301 (defun notmuch-show-stash-date (&optional stash-timestamp)
2302 "Copy date of current message to kill-ring.
2304 If invoked with a prefix argument, copy timestamp of current
2305 message to kill-ring."
2308 (notmuch-common-do-stash (format "%d" (notmuch-show-get-timestamp)))
2309 (notmuch-common-do-stash (notmuch-show-get-date))))
2311 (defun notmuch-show-stash-filename ()
2312 "Copy filename of current message to kill-ring."
2314 (notmuch-common-do-stash (notmuch-show-get-filename)))
2316 (defun notmuch-show-stash-from ()
2317 "Copy From address of current message to kill-ring."
2319 (notmuch-common-do-stash (notmuch-show-get-from)))
2321 (put 'notmuch-show-stash-message-id 'notmuch-prefix-doc
2322 "Copy thread: query matching current thread to kill-ring.")
2323 (defun notmuch-show-stash-message-id (&optional stash-thread-id)
2324 "Copy id: query matching the current message to kill-ring.
2326 If invoked with a prefix argument (or STASH-THREAD-ID is
2327 non-nil), copy thread: query matching the current thread to
2331 (notmuch-common-do-stash notmuch-show-thread-id)
2332 (notmuch-common-do-stash (notmuch-show-get-message-id))))
2334 (defun notmuch-show-stash-message-id-stripped ()
2335 "Copy message ID of current message (sans `id:' prefix) to kill-ring."
2337 (notmuch-common-do-stash (notmuch-show-get-message-id t)))
2339 (defun notmuch-show-stash-subject ()
2340 "Copy Subject field of current message to kill-ring."
2342 (notmuch-common-do-stash (notmuch-show-get-subject)))
2344 (defun notmuch-show-stash-tags ()
2345 "Copy tags of current message to kill-ring as a comma separated list."
2347 (notmuch-common-do-stash (mapconcat 'identity (notmuch-show-get-tags) ",")))
2349 (defun notmuch-show-stash-to ()
2350 "Copy To address of current message to kill-ring."
2352 (notmuch-common-do-stash (notmuch-show-get-to)))
2354 (defun notmuch-show-stash-mlarchive-link (&optional mla)
2355 "Copy an ML Archive URI for the current message to the kill-ring.
2357 This presumes that the message is available at the selected Mailing List Archive.
2359 If optional argument MLA is non-nil, use the provided key instead of prompting
2360 the user (see `notmuch-show-stash-mlarchive-link-alist')."
2362 (let ((url (cdr (assoc
2364 (let ((completion-ignore-case t))
2366 "Mailing List Archive: "
2367 notmuch-show-stash-mlarchive-link-alist
2369 notmuch-show-stash-mlarchive-link-default)))
2370 notmuch-show-stash-mlarchive-link-alist))))
2371 (notmuch-common-do-stash
2373 (funcall url (notmuch-show-get-message-id t))
2374 (concat url (notmuch-show-get-message-id t))))))
2376 (defun notmuch-show-stash-mlarchive-link-and-go (&optional mla)
2377 "Copy an ML Archive URI for the current message to the kill-ring and visit it.
2379 This presumes that the message is available at the selected Mailing List Archive.
2381 If optional argument MLA is non-nil, use the provided key instead of prompting
2382 the user (see `notmuch-show-stash-mlarchive-link-alist')."
2384 (notmuch-show-stash-mlarchive-link mla)
2385 (browse-url (current-kill 0 t)))
2387 (defun notmuch-show-stash-git-helper (addresses prefix)
2388 "Normalize all ADDRESSES while adding PREFIX.
2389 Escape, trim, quote and add PREFIX to each address in list
2390 of ADDRESSES, and return the result as a single string."
2391 (mapconcat (lambda (x)
2393 ;; escape double-quotes
2394 (replace-regexp-in-string
2396 ;; trim leading and trailing spaces
2397 (replace-regexp-in-string
2398 "\\(^ *\\| *$\\)" ""
2402 (put 'notmuch-show-stash-git-send-email 'notmuch-prefix-doc
2403 "Copy From/To/Cc of current message to kill-ring.
2404 Use a form suitable for pasting to git send-email command line.")
2406 (defun notmuch-show-stash-git-send-email (&optional no-in-reply-to)
2407 "Copy From/To/Cc/Message-Id of current message to kill-ring.
2408 Use a form suitable for pasting to git send-email command line.
2410 If invoked with a prefix argument (or NO-IN-REPLY-TO is non-nil),
2411 omit --in-reply-to=<Message-Id>."
2413 (notmuch-common-do-stash
2414 (mapconcat 'identity
2417 (notmuch-show-stash-git-helper
2418 (message-tokenize-header (notmuch-show-get-from)) "--to=")
2419 (notmuch-show-stash-git-helper
2420 (message-tokenize-header (notmuch-show-get-to)) "--to=")
2421 (notmuch-show-stash-git-helper
2422 (message-tokenize-header (notmuch-show-get-cc)) "--cc=")
2423 (unless no-in-reply-to
2424 (notmuch-show-stash-git-helper
2425 (list (notmuch-show-get-message-id t)) "--in-reply-to="))))
2428 ;;; Interactive part functions and their helpers
2430 (defun notmuch-show-generate-part-buffer (msg part)
2431 "Return a temporary buffer containing the specified part's content."
2432 (let ((buf (generate-new-buffer " *notmuch-part*"))
2433 (process-crypto notmuch-show-process-crypto))
2434 (with-current-buffer buf
2435 ;; This is always used in the content of mm handles, which
2436 ;; expect undecoded, binary part content.
2437 (insert (notmuch-get-bodypart-binary msg part process-crypto)))
2440 (defun notmuch-show-current-part-handle (&optional mime-type)
2441 "Return an mm-handle for the part containing point.
2443 This creates a temporary buffer for the part's content; the
2444 caller is responsible for killing this buffer as appropriate. If
2445 MIME-TYPE is given then set the handle's mime-type to MIME-TYPE."
2446 (let* ((msg (notmuch-show-get-message-properties))
2447 (part (notmuch-show-get-part-properties))
2448 (buf (notmuch-show-generate-part-buffer msg part))
2449 (computed-type (or mime-type (plist-get part :computed-type)))
2450 (filename (plist-get part :filename))
2451 (disposition (and filename `(attachment (filename . ,filename)))))
2452 (mm-make-handle buf (list computed-type) nil nil disposition)))
2454 (defun notmuch-show-apply-to-current-part-handle (fn &optional mime-type)
2455 "Apply FN to an mm-handle for the part containing point.
2457 This ensures that the temporary buffer created for the mm-handle
2458 is destroyed when FN returns. If MIME-TYPE is given then force
2459 part to be treated as if it had that mime-type."
2460 (let ((handle (notmuch-show-current-part-handle mime-type)))
2461 ;; Emacs puts stdout/stderr into the calling buffer so we call
2462 ;; it from a temp-buffer, unless notmuch-show-attachment-debug
2463 ;; is non-nil, in which case we put it in " *notmuch-part*".
2465 (if notmuch-show-attachment-debug
2466 (with-current-buffer (generate-new-buffer " *notmuch-part*")
2467 (funcall fn handle))
2469 (funcall fn handle)))
2470 (kill-buffer (mm-handle-buffer handle)))))
2472 (defun notmuch-show-part-button-default (&optional button)
2474 (let ((button (or button (button-at (point)))))
2475 ;; Try to toggle the part, if that fails then call the default
2476 ;; action. The toggle fails if the part has no emacs renderable
2478 (unless (notmuch-show-toggle-part-invisibility button)
2479 (call-interactively notmuch-show-part-button-default-action))))
2481 (defun notmuch-show-save-part ()
2482 "Save the MIME part containing point to a file."
2484 (notmuch-show-apply-to-current-part-handle #'mm-save-part))
2486 (defun notmuch-show-view-part ()
2487 "View the MIME part containing point in an external viewer."
2489 ;; Set mm-inlined-types to nil to force an external viewer
2490 (let ((mm-inlined-types nil))
2491 (notmuch-show-apply-to-current-part-handle #'mm-display-part)))
2493 (defun notmuch-show-interactively-view-part ()
2494 "View the MIME part containing point, prompting for a viewer."
2496 (notmuch-show-apply-to-current-part-handle #'mm-interactively-view-part))
2498 (defun notmuch-show-pipe-part ()
2499 "Pipe the MIME part containing point to an external command."
2501 (notmuch-show-apply-to-current-part-handle #'mm-pipe-part))
2503 (defun notmuch-show--mm-display-part (handle)
2504 "Use mm-display-part to display HANDLE in a new buffer.
2506 If the part is displayed in an external application then close
2508 (let ((buf (get-buffer-create (generate-new-buffer-name
2509 (concat " *notmuch-internal-part*")))))
2510 (pop-to-buffer-same-window buf)
2511 (if (eq (mm-display-part handle) 'external)
2513 (goto-char (point-min))
2514 (set-buffer-modified-p nil)
2515 (view-buffer buf 'kill-buffer-if-not-modified))))
2517 (defun notmuch-show-choose-mime-of-part (mime-type)
2518 "Choose the mime type to use for displaying part."
2520 (list (completing-read "Mime type to use (default text/plain): "
2521 (mailcap-mime-types) nil nil nil nil "text/plain")))
2522 (notmuch-show-apply-to-current-part-handle #'notmuch-show--mm-display-part
2525 (defun notmuch-show-imenu-prev-index-position-function ()
2526 "Move point to previous message in notmuch-show buffer.
2527 This function is used as a value for
2528 `imenu-prev-index-position-function'."
2531 (notmuch-show-previous-message)
2534 (defun notmuch-show-imenu-extract-index-name-function ()
2535 "Return imenu name for line at point.
2536 This function is used as a value for
2537 `imenu-extract-index-name-function'. Point should be at the
2538 beginning of the line."
2539 (back-to-indentation)
2540 (buffer-substring-no-properties (if notmuch-show-imenu-indent
2541 (line-beginning-position)
2543 (line-end-position)))
2545 (defmacro notmuch-show--with-currently-shown-message (&rest body)
2546 "Evaluate BODY with display restricted to the currently shown
2550 (let ((extent (notmuch-show-message-extent)))
2551 (narrow-to-region (car extent) (cdr extent))
2554 (defun notmuch-show--gather-urls ()
2555 "Gather any URLs in the current message."
2556 (notmuch-show--with-currently-shown-message
2558 (goto-char (point-min))
2559 (while (re-search-forward goto-address-url-regexp (point-max) t)
2560 (push (match-string-no-properties 0) urls))
2563 (defun notmuch-show-browse-urls (&optional kill)
2564 "Offer to browse any URLs in the current message.
2565 With a prefix argument, copy the URL to the kill ring rather than
2568 (let ((urls (notmuch-show--gather-urls))
2569 (prompt (if kill "Copy URL to kill ring: " "Browse URL: "))
2570 (fn (if kill #'kill-new #'browse-url)))
2572 (funcall fn (completing-read prompt urls nil nil nil nil (car urls)))
2573 (message "No URLs found."))))
2577 (provide 'notmuch-show)
2579 ;;; notmuch-show.el ends here