emacs: add rul-mail to literate config

2 files changed, 150 insertions, 14 deletions

diff --git a/.emacs.d/rul-emacs.org b/.emacs.d/rul-emacs.org
index fdc2364..a0d0a14 100644
--- a/.emacs.d/rul-emacs.org
+++ b/.emacs.d/rul-emacs.org
@@ -596,3 +596,150 @@ installs =fontaine=, a software that allows defining font presets.
 
 (provide 'rul-fonts)
 #+end_src
+
+** The =mail= module
+Emacs can act as Mail User Agent. My preferred package for this is
+=notmuch=.
+
+#+begin_src emacs-lisp :tangle "rul-lisp/packages/rul-mail.el"
+;;; rul-fonts.el --- Fonts configuration
+
+;; mml-sec.el
+;; Use sender to find GPG key.
+(setq mml-secure-openpgp-sign-with-sender t)
+
+(use-package notmuch
+  :ensure t
+  :config
+  ;; UI
+  (setq notmuch-show-logo nil
+        notmuch-column-control 1.0
+        notmuch-hello-auto-refresh t
+        notmuch-hello-recent-searches-max 20
+        notmuch-hello-thousands-separator ""
+        notmuch-show-all-tags-list t)
+
+  ;; Keymaps
+  (defun rul/capture-mail()
+    "Capture mail to org mode."
+    (interactive)
+    (org-store-link nil)
+    (org-capture nil "m")
+    )
+
+  (bind-key "c" 'rul/capture-mail notmuch-show-mode-map)
+
+  (define-key notmuch-show-mode-map "R" 'notmuch-show-reply)
+  (define-key notmuch-search-mode-map "R" 'notmuch-search-reply-to-thread)
+
+  ;; Spam
+  (define-key notmuch-show-mode-map "S"
+              (lambda ()
+                "mark message as spam"
+                (interactive)
+                (notmuch-show-tag (list "+spam" "-inbox" "-unread"))))
+
+  (define-key notmuch-search-mode-map "S"
+              (lambda (&optional beg end)
+                "mark thread as spam"
+                (interactive (notmuch-search-interactive-region))
+                (notmuch-search-tag (list "+spam" "-inbox" "-unread") beg end)))
+
+  ;; Archive
+  (setq notmuch-archive-tags (list "-inbox" "+archive"))
+  (define-key notmuch-show-mode-map "A"
+              (lambda ()
+                "archive"
+                (interactive)
+                (notmuch-show-tag (list "+archive" "-inbox" "-unread"))
+                (notmuch-refresh-this-buffer)))
+
+  (define-key notmuch-search-mode-map "A"
+              (lambda (&optional beg end)
+                "archive thread"
+                (interactive (notmuch-search-interactive-region))
+                (notmuch-search-tag (list "+archive" "-inbox" "-unread") beg end)
+                (notmuch-refresh-this-buffer)))
+
+  ;; Mark as read
+  (define-key notmuch-search-mode-map "r"
+              (lambda (&optional beg end)
+                "mark thread as read"
+                (interactive (notmuch-search-interactive-region))
+                (notmuch-search-tag (list "-unread") beg end)
+                (notmuch-search-next-thread)))
+
+  (define-key notmuch-search-mode-map (kbd "RET")
+              (lambda ()
+                "Show the selected thread with notmuch-tree if it has more
+than one email. Use notmuch-show otherwise."
+                (interactive)
+                (if (= (plist-get (notmuch-search-get-result) :total) 1)
+                    (notmuch-search-show-thread)
+                  (notmuch-tree (notmuch-search-find-thread-id)
+                                notmuch-search-query-string
+                                nil
+                                (notmuch-prettify-subject (notmuch-search-find-subject))))))
+
+  (defun color-inbox-if-unread () (interactive)
+         (save-excursion
+           (goto-char (point-min))
+           (let ((cnt (car (process-lines "notmuch" "count" "tag:inbox and tag:unread"))))
+             (when (> (string-to-number cnt) 0)
+               (save-excursion
+                 (when (search-forward "inbox" (point-max) t)
+                   (let* ((overlays (overlays-in (match-beginning 0) (match-end 0)))
+                          (overlay (car overlays)))
+                     (when overlay
+                       (overlay-put overlay 'face '((:inherit bold) (:foreground "green")))))))))))
+
+  (defvar notmuch-hello-refresh-count 0)
+  (defun notmuch-hello-refresh-status-message ()
+    (let* ((new-count
+            (string-to-number
+             (car (process-lines notmuch-command "count"))))
+           (diff-count (- new-count notmuch-hello-refresh-count)))
+      (cond
+       ((= notmuch-hello-refresh-count 0)
+        (message "You have %s messages."
+                 (notmuch-hello-nice-number new-count)))
+       ((> diff-count 0)
+        (message "You have %s more messages since last refresh."
+                 (notmuch-hello-nice-number diff-count)))
+       ((< diff-count 0)
+        (message "You have %s fewer messages since last refresh."
+                 (notmuch-hello-nice-number (- diff-count)))))
+      (setq notmuch-hello-refresh-count new-count)))
+
+  (add-hook 'notmuch-hello-refresh-hook 'color-inbox-if-unread)
+  (add-hook 'notmuch-hello-refresh-hook 'notmuch-hello-refresh-status-message)
+
+  (setq notmuch-hello-sections '(notmuch-hello-insert-saved-searches
+                                 notmuch-hello-insert-search
+                                 notmuch-hello-insert-recent-searches
+                                 notmuch-hello-insert-alltags
+                                 ))
+
+  ;; https://git.sr.ht/~tslil/dotfiles/tree/4e51afbb/emacs/notmuch-config.el#L76-82
+  (defmacro make-binds (mode-map binds argfunc &rest body)
+    "Create keybindings in `mode-map' using a list of (keystr . arg)
+pairs in `binds' of the form ( ... (argfunc arg) body)."
+    `(progn ,@(mapcar (lambda (pair)
+                        `(define-key ,mode-map (kbd ,(car pair))
+                                     (lambda () (interactive) (,argfunc ,(cdr pair)) ,@body)))
+                      (eval binds))))
+
+  (defvar notmuch-hello-tree-searches '(("u" . "tag:unread")
+                                        ("i" . "tag:inbox")
+                                        ("*" . "*"))
+    "List of (key . query) pairs to bind in notmuch-hello.")
+
+  (make-binds notmuch-hello-mode-map
+              notmuch-hello-tree-searches
+              notmuch-search)
+) ;; ends use-package notmuch
+
+(use-package notmuch-indicator :ensure t)
+
+(provide 'rul-mail)
+#+end_src
diff --git a/.emacs.d/rul-lisp/packages/rul-mail.el b/.emacs.d/rul-lisp/packages/rul-mail.el
index 18fe376..69f2e85 100644
--- a/.emacs.d/rul-lisp/packages/rul-mail.el
+++ b/.emacs.d/rul-lisp/packages/rul-mail.el
@@ -1,19 +1,9 @@
-;; mail-mode
+;;; rul-fonts.el --- Fonts configuration
 
-; mml-sec.el
+;; mml-sec.el
+;; Use sender to find GPG key.
 (setq mml-secure-openpgp-sign-with-sender t)
 
-; sendmail.el
-(add-hook 'mail-mode-hook
-          (lambda ()
-            (font-lock-add-keywords nil
-                                    '(("^[ \t]*>[ \t]*>[ \t]*>.*$"
-                                       (0 'compilation-error))
-                                      ("^[ \t]*>[ \t]*>.*$"
-                                       (0 'compilation-column-number))
-                                      ("^[ \t]*>.*$"
-                                       (0 'comint-highlight-prompt))))))
-
 (use-package notmuch
   :ensure t
   :config
@@ -148,4 +138,3 @@ pairs in `binds' of the form ( ... (argfunc arg) body)."
 (use-package notmuch-indicator :ensure t)
 
 (provide 'rul-mail)
-