dotfiles/emacs/.emacs.d/config/init-email.el

516 lines
21 KiB
EmacsLisp

;; Email in Emacs via mu4e
(use-package mu4e
:straight `(:local-repo ,(directory-file-name (file-name-directory (locate-library "mu4e"))) :type built-in)
:defer 2
:if (locate-library "mu4e")
:commands (mu4e mu4e-update-mail-and-index)
:config
(setq
;; General
mu4e-maildir (expand-file-name "~/.mail")
mu4e-completing-read-function 'completing-read
mu4e-attachment-dir (expand-file-name "~/Downloads")
mu4e-change-filenames-when-moving t
user-mail-address "jeremy.dormitzer@gmail.com"
mu4e-view-show-images t
mu4e-headers-skip-duplicates t
mu4e-search-results-limit 3000
mu4e-split-view 'horizontal
mail-user-agent 'mu4e-user-agent
;; Custom actions
mu4e-view-actions '(("capture message" . mu4e-action-capture-message)
("view as pdf" . mu4e-action-view-as-pdf)
("show this thread" . mu4e-action-show-thread)
("View in browser" . mu4e-action-view-in-browser))
;; Bookmarked searches
mu4e-bookmarks '((:name "Inbox"
:query "maildir:/jeremy-dormitzer-gmail-com/Inbox OR maildir:/jeremydormitzer-hummingbird-co/Inbox"
:key ?i)
(:name "Unread messages"
:query "flag:unread AND NOT flag:trashed"
:key ?u)
(:name "Today's messages"
:query "date:today..now"
:key ?t)
(:name "Last 7 days"
:query "date:7d..now"
:key ?p))
;; Getting mail
mu4e-get-mail-command "mbsync -a"
;; Sending mail
send-mail-function #'message-send-mail-with-sendmail
message-send-mail-function #'message-send-mail-with-sendmail
sendmail-program (or (executable-find "msmtp") (user-error "msmtp executable not found"))
;; Let Gmail handle putting sent messages in the sent folder
mu4e-sent-messages-behavior 'delete
;; Move to trash folder instead of adding trash flag for Gmail mailboxes
mu4e-move-to-trash-patterns '("jeremy-dormitzer-gmail-com",
"jeremydormitzer-hummingbird-co")
;; HTML email rendering
shr-use-colors nil
;; Make sure mu4e knows about my different accounts
mu4e-context-policy 'pick-first
mu4e-compose-context-policy 'ask
mu4e-contexts
`(,(make-mu4e-context
:name "Hummingbird Gmail"
:match-func (lambda (msg)
(when msg
(string-match-p
"jeremydormitzer-hummingbird-co"
(mu4e-message-field msg :path))))
:vars '((user-mail-address . "jeremydormitzer@hummingbird.co")
(mu4e-compose-signature . nil)
(mu4e-sent-folder . "/jeremydormitzer-hummingbird-co/Sent")
(mu4e-drafts-folder . "/jeremydormitzer-hummingbird-co/Drafts")
(mu4e-refile-folder . "/jeremydormitzer-hummingbird-co/Archive")
(mu4e-trash-folder . "/jeremydormitzer-hummingbird-co/Trash")
(message-sendmail-extra-arguments
. ("-a" "jeremydormitzer-hummingbird-co"))))
,(make-mu4e-context
:name "Personal Gmail"
:match-func (lambda (msg)
(when msg
(string-match-p
"jeremy-dormitzer-gmail-com"
(mu4e-message-field msg :path))))
:vars '((user-mail-address . "jeremy.dormitzer@gmail.com")
(mu4e-compose-signature . nil)
(mu4e-sent-folder . "/jeremy-dormitzer-gmail-com/Sent")
(mu4e-drafts-folder . "/jeremy-dormitzer-gmail-com/Drafts")
(mu4e-refile-folder . "/jeremy-dormitzer-gmail-com/Archive")
(mu4e-trash-folder . "/jeremy-dormitzer-gmail-com/Trash")
(message-sendmail-extra-arguments
. ("-a" "jeremy-dormitzer-gmail-com"))))))
;; Custom mark function to mark messages matching the current message
(defun mu4e-mark-matching-from-pred (msg from)
(mu4e-message-contact-field-matches msg :from from))
(defun mu4e-mark-matching-from-input ()
(let* ((msg (mu4e-message-at-point t)))
(if (not msg)
(error "No message at point")
(-non-nil
(funcall
(-juxt (lambda (v) (plist-get v :name))
(lambda (v) (plist-get v :email)))
(car (mu4e-message-field msg :from)))))))
(setq mu4e-headers-custom-markers
'(("Older than"
(lambda
(msg date)
(time-less-p
(mu4e-msg-field msg :date)
date))
(lambda nil
(mu4e-get-time-date "Match messages before: ")))
("Newer than"
(lambda
(msg date)
(time-less-p date
(mu4e-msg-field msg :date)))
(lambda nil
(mu4e-get-time-date "Match messages after: ")))
("Bigger than"
(lambda
(msg bytes)
(>
(mu4e-msg-field msg :size)
(* 1024 bytes)))
(lambda nil
(read-number "Match messages bigger than (Kbytes): ")))
("Matching current message from: field"
mu4e-mark-matching-from-pred
mu4e-mark-matching-from-input)))
(defun mu4e-matching-search-query (msg field)
"Generates a mu query to find message with the same `field' value as `msg'."
(if-let ((field-str (substring (symbol-name field) 1))
(field-val (mu4e-message-field msg field)))
(pcase field
((or :to :from :cc :bcc) (format "%s:%s" field-str (plist-get (car field-val) :email)))
(:date (let ((time-string (format-time-string "%Y%m%d" field-val)))
(format "%s:%s..%s" field-str time-string time-string)))
(_ (format "%s:%s" field-str field-val)))
(error "No such message field %s" field)))
(defun mu4e-search-matching (msg field)
(interactive (list (mu4e-message-at-point)
(let ((field-str (completing-read "Field to match: "
'("from"
"date"
"list")
nil
t)))
(intern (format ":%s" field-str)))))
(let ((query (mu4e-matching-search-query msg field)))
(mu4e-search query)))
(defvar mu4e-search-map (make-sparse-keymap))
(general-def mu4e-search-map
"s" #'mu4e-search
"S" #'mu4e-search-edit
"/" #'mu4e-search-narrow
"<M-left>" #'mu4e-search-prev
"\\" #'mu4e-search-prev
"<M-right>" #'mu4e-search-next
"O" #'mu4e-search-change-sorting
"P" #'mu4e-search-toggle-property
"b" #'mu4e-search-bookmark
"B" #'mu4e-search-bookmark-edit
"j" #'mu4e-search-maildir
"m" #'mu4e-search-matching)
(general-def mu4e-headers-mode-map
"s" mu4e-search-map)
(general-def mu4e-view-mode-map
"s" mu4e-search-map)
(add-hook 'mu4e-compose-pre-hook
(lambda ()
(set
(make-local-variable '*should-delete-trailing-whitespace*)
nil)))
;; For some reason mu4e--server-filter expects these to be defined, but doesn't define them
(when (null mu4e-info-func)
(setq mu4e-info-func (lambda (&rest args))))
;; Support sending attachments from Dired buffers
(with-eval-after-load 'dired
(require 'gnus-dired)
;; make the `gnus-dired-mail-buffers' function also work on
;; message-mode derived modes, such as mu4e-compose-mode
(defun gnus-dired-mail-buffers ()
"Return a list of active message buffers."
(let (buffers)
(save-current-buffer
(dolist (buffer (buffer-list t))
(set-buffer buffer)
(when (and (derived-mode-p 'message-mode)
(null message-sent-message-via))
(push (buffer-name buffer) buffers))))
(nreverse buffers)))
(setq gnus-dired-mail-mode 'mu4e-user-agent)
(add-hook 'dired-mode-hook 'turn-on-gnus-dired-mode))
;; A custom library to send HTML email with Markdown syntax
;; TODO move this to an actual external package?
(defvar *message-md-pandoc-html-template*
"<html>
<head>
<meta charset=\"utf-8\" />
</head>
<body>
$body$
</body>
</html>"
"The default template used when converting markdown to HTML via pandoc.")
(defun gfm->html (gfm &optional template)
"Converts GitHub-flavored markdown to HTML via pandoc.
By default, the template `*message-md-pandoc-html-template*' is used,
but this can be overridden with the TEMPLATE argument."
(unless (executable-find "pandoc")
(error "Pandoc not found, unable to convert"))
(let ((template-file (make-temp-file "gfm->html-template"
nil ".html"
(or template *message-md-pandoc-html-template*))))
(with-temp-buffer
(insert gfm)
(unless
(= 0
(call-process-region (point-min) (point-max) "pandoc" t t nil
"--template" template-file "--quiet"
"-f" "gfm" "-t" "html"))
(error "Markdown to HTML conversion failed: %s"
(buffer-substring (point-min) (point-max))))
(buffer-substring (point-min) (point-max)))))
(defun mml-node->str (node)
"Converts a parsed MML node back to an MML string."
(let ((node-name (car node))
(node-alist (cdr node)))
(format "<#%s%s>\n%s"
node-name
(cl-reduce (lambda (acc pair)
(if (equal (car pair) 'contents)
acc
(concat acc (format " %s=%S"
(car pair)
(cdr pair)))))
node-alist
:initial-value "")
(cdr (assoc 'contents node-alist))
node-name)))
(defun multipart-message-as-string (plain html inline attachments)
"Given MML nodes PLAIN, and HTML and MML node lists INLINE and
ATTACHMENTS, constructs a multipart MML email and returns it as a
string."
(let* ((alternative (concat "<#multipart type=alternative>\n"
(mml-node->str plain) "\n"
(mml-node->str html) "\n"
"<#/multipart>"))
(related (when inline
(concat "<#multipart type=related>\n"
alternative "\n"
(cl-reduce
(lambda (acc node)
(concat acc (mml-node->str node) "\n"))
inline
:initial-value "")
"<#/multipart>")))
(mixed (when attachments
(concat "<#multipart type=mixed>\n"
(or related alternative) "\n"
(cl-reduce
(lambda (acc node)
(concat acc (mml-node->str node) "\n"))
attachments
:initial-value "")
"<#/multipart>"))))
(or mixed related alternative)))
(defun assoc-mml-node (key node)
(cdr (assoc key (cdr node))))
(defun multipart-html-message (raw)
"Creates a multipart HTML email with a text part and an html part."
(with-temp-buffer
(insert raw)
(let* ((parsed (mml-parse))
(plain (cl-reduce
(lambda (acc node)
(if (not (equal (assoc-mml-node 'type node) "text/plain"))
acc
`(part (type . "text/plain")
(contents . ,(concat (cdaddr acc)
(cdaddr node))))))
parsed
:initial-value '(part (type . "text/plain")
(contents . ""))))
(html `(part (type . "text/html")
(contents . ,(gfm->html (cdaddr plain)))))
(inline (nreverse
(cl-reduce
(lambda (acc node)
(if (not (equal (assoc-mml-node 'disposition node)
"inline"))
acc
(cons node acc)))
parsed
:initial-value nil)))
(attachments (nreverse
(cl-reduce
(lambda (acc node)
(if (not (equal (assoc-mml-node 'disposition node)
"attachment"))
acc
(cons node acc)))
parsed
:initial-value nil))))
(multipart-message-as-string plain
html
inline
attachments))))
(defun convert-message-to-markdown ()
"Convert the message in the current buffer to a multipart HTML email.
The HTML is rendered by treating the message content as Markdown."
(interactive)
(let* ((begin
(save-excursion
(goto-char (point-min))
(search-forward mail-header-separator)))
(end (point-max))
(raw-body (buffer-substring begin end)))
(undo-boundary)
(delete-region begin end)
(save-excursion
(goto-char begin)
(newline)
(insert (multipart-html-message raw-body)))))
(defun message-md-send (&optional arg)
"Convert the current buffer and send it.
If given prefix arg ARG, skips markdown conversion."
(interactive "P")
(unless arg
(convert-message-to-markdown))
(message-send))
(defun message-md-send-and-exit (&optional arg)
"Convert the current buffer and send it, then exit from mail buffer.
If given prefix arg ARG, skips markdown conversion."
(interactive "P")
(unless arg
(convert-message-to-markdown))
(message-send-and-exit))
(with-eval-after-load 'message
(define-key message-mode-map (kbd "C-c C-s") #'message-md-send)
(define-key message-mode-map (kbd "C-c C-c") #'message-md-send-and-exit))
;; Handle replies to HTML emails as well
(defun html->gfm (html)
(unless (executable-find "pandoc")
(error "Pandoc not found, unable to convert"))
(with-temp-buffer
(insert html)
(unless
(= 0
(call-process-region (point-min) (point-max) "pandoc" t t nil
"--quiet"
"-f" "html-native_divs-native_spans"
"-t" "gfm"))
(error "HTML to mardkwon conversion failed: %s"
(buffer-substring (point-min) (point-max))))
(buffer-substring (point-min) (point-max))))
(with-eval-after-load 'mu4e
(defvar message-md-rich-text-reply t)
(defvar message-md--inhibit-rich-text-reply nil)
(defun html-to-md-command (msg)
"Returns the text of MSG as Markdown."
(if (mu4e-msg-field msg :body-html)
(html->gfm (mu4e-msg-field msg :body-html))
(mu4e-msg-field msg :body-txt)))
(defun mu4e-draft-cite-original-advice (oldfn &rest args)
(let ((res (if (and message-md-rich-text-reply
(not message-md--inhibit-rich-text-reply))
(let ((mu4e-view-prefer-html t)
(mu4e-html2text-command #'html-to-md-command))
(apply oldfn args))
(apply oldfn args))))
(setq message-md--inhibit-rich-text-reply nil)
res))
(defun mu4e-compose-reply-advice (oldfn &rest args)
(when current-prefix-arg
(setq message-md--inhibit-rich-text-reply t))
(apply oldfn args))
(advice-add 'mu4e~draft-cite-original :around #'mu4e-draft-cite-original-advice)
(advice-add 'mu4e-compose-reply :around #'mu4e-compose-reply-advice))
;; Add an "X-Attachment-Id" header to MIME stuff as well as a Content-Id:
(with-eval-after-load 'mml
(defun mml-insert-mime-headers (cont type charset encoding flowed)
(let (parameters id disposition description)
(setq parameters
(mml-parameter-string
cont mml-content-type-parameters))
(when (or charset
parameters
flowed
(not (equal type mml-generate-default-type))
mml-insert-mime-headers-always)
(when (consp charset)
(error
"Can't encode a part with several charsets"))
(insert "Content-Type: " type)
(when charset
(mml-insert-parameter
(mail-header-encode-parameter "charset" (symbol-name charset))))
(when flowed
(mml-insert-parameter "format=flowed"))
(when parameters
(mml-insert-parameter-string
cont mml-content-type-parameters))
(insert "\n"))
(when (setq id (cdr (assq 'id cont)))
(insert "Content-ID: " id "\n"))
(when (setq x-attachment-id (cdr (assq 'x-attachment-id cont)))
(insert "X-Attachment-Id: " x-attachment-id "\n"))
(setq parameters
(mml-parameter-string
cont mml-content-disposition-parameters))
(when (or (setq disposition (cdr (assq 'disposition cont)))
parameters)
(insert "Content-Disposition: "
(or disposition
(mml-content-disposition type (cdr (assq 'filename cont)))))
(when parameters
(mml-insert-parameter-string
cont mml-content-disposition-parameters))
(insert "\n"))
(unless (eq encoding '7bit)
(insert (format "Content-Transfer-Encoding: %s\n" encoding)))
(when (setq description (cdr (assq 'description cont)))
(insert "Content-Description: ")
(setq description (prog1
(point)
(insert description "\n")))
(mail-encode-encoded-word-region description (point))))))
(defun message-md-insert-inline-image (image type description)
(interactive
(let* ((file (mml-minibuffer-read-file "Insert image: "))
(type (if current-prefix-arg
(or (mm-default-file-encoding file)
"application/octet-stream")
(mml-minibuffer-read-type file)))
(description (if current-prefix-arg
nil
(mml-minibuffer-read-description))))
(list file type description)))
(let ((id (format "%s%s" (s-snake-case description) (random))))
(insert (format "![%s](cid:%s)" description id))
(save-excursion
(goto-char (point-max))
(newline)
(insert
(format (concat "<#part id=\"<%s>\" x-attachment-id=%S "
"type=%S filename=%S disposition=inline description=%s>")
id id type image description)))))
;; The default message signature begins with "-- \n". To makes this
;; markdown compatible, we need to add an extra space at the end: "-- \n"
(defun message-md-add-space-to-sig-separator (&rest args)
(save-excursion
(when (search-backward "--" nil t)
(forward-char 2)
(insert " "))))
(advice-add 'message-insert-signature :after
#'message-md-add-space-to-sig-separator)
;; A patch to shr to make it render links correctly
(with-eval-after-load 'shr
(defun shr-add-font (start end type)
(save-excursion
(goto-char start)
(while (< (point) end)
(when (bolp)
(skip-chars-forward " "))
;; Remove the APPEND argument to add-face-text-property
;; so the face ends up at the head of the face list
(add-face-text-property (point) (min (line-end-position) end) type)
(if (< (line-end-position) end)
(forward-line 1)
(goto-char end))))))
;; there's some conflict with evil-collection making my keybindings
;; not load, so load them in a hook
(defun my-mu4e-headers-mode-setup ()
(general-def normal mu4e-headers-mode-map
"t" #'mu4e-headers-mark-thread
"s" mu4e-search-map))
(defun my-mu4e-view-mode-setup ()
(general-def normal mu4e-view-mode-map
"t" #'mu4e-view-mark-thread
"s" mu4e-search-map))
(add-hook 'mu4e-headers-mode-hook #'my-mu4e-headers-mode-setup)
(add-hook 'mu4e-view-mode-hook #'my-mu4e-view-mode-setup)
(mu4e t))
(provide 'init-email)