X-Git-Url: https://git.shemshak.org/~bandali/configs/blobdiff_plain/0deee78815aa4815a091eee335e6358df545a333..0189e4fda646500adc8efc53d0e7ada946a4f1eb:/init.org?ds=inline

diff --git a/init.org b/init.org
index 181dac7..60e319e 100644
--- a/init.org
+++ b/init.org
@@ -319,6 +319,14 @@ in my shell.
   (exec-path-from-shell-copy-env "SSH_AUTH_SOCK"))
 #+end_src
 
+** Only one custom theme at a time
+
+#+begin_src emacs-lisp
+(defadvice load-theme (before clear-previous-themes activate)
+  "Clear existing theme settings instead of layering them"
+  (mapc #'disable-theme custom-enabled-themes))
+#+end_src
+
 ** Server
 
 Start server if not already running. Alternatively, can be done by
@@ -372,6 +380,48 @@ Font stack with better unicode support, around =Ubuntu Mono= and
    'prepend))
 #+end_src
 
+** Libraries
+
+#+begin_src emacs-lisp
+(require 'cl-lib)
+(require 'subr-x)
+#+end_src
+
+** Useful utilities
+
+#+begin_src emacs-lisp
+(defun ab-enlist (exp)
+  "Return EXP wrapped in a list, or as-is if already a list."
+(if (listp exp) exp (list exp)))
+
+; from https://github.com/hlissner/doom-emacs/commit/589108fdb270f24a98ba6209f6955fe41530b3ef
+(defmacro after! (features &rest body)
+  "A smart wrapper around `with-eval-after-load'. Supresses warnings during
+compilation."
+  (declare (indent defun) (debug t))
+  (list (if (or (not (bound-and-true-p byte-compile-current-file))
+                (dolist (next (ab-enlist features))
+                  (if (symbolp next)
+                      (require next nil :no-error)
+                    (load next :no-message :no-error))))
+            #'progn
+          #'with-no-warnings)
+        (cond ((symbolp features)
+               `(eval-after-load ',features '(progn ,@body)))
+              ((and (consp features)
+                    (memq (car features) '(:or :any)))
+               `(progn
+                  ,@(cl-loop for next in (cdr features)
+                             collect `(after! ,next ,@body))))
+              ((and (consp features)
+                    (memq (car features) '(:and :all)))
+               (dolist (next (cdr features))
+                 (setq body `(after! ,next ,@body)))
+               body)
+              ((listp features)
+	       `(after! (:all ,@features) ,@body)))))
+#+end_src
+
 * Core
 :PROPERTIES:
 :CUSTOM_ID: core
@@ -532,236 +582,59 @@ customizing it.
             'auto-compile-inhibit-compile-detached-git-head))
 #+end_src
 
-*** TODO [[https://github.com/Kungsgeten/ryo-modal][ryo-modal]]
+*** [[https://github.com/noctuid/general.el][general]]
 
 #+begin_quote
 Roll your own modal mode
 #+end_quote
 
-*** [[https://github.com/ch11ng/exwm][EXWM]] (window manager)
-
-#+begin_src emacs-lisp :tangle no
-(use-package exwm
+#+begin_src emacs-lisp
+(use-package general
   :demand t
   :config
-  (require 'exwm-config)
-
-  ;; Set the initial workspace number.
-  (setq exwm-workspace-number 4)
-
-  ;; Make class name the buffer name, truncating beyond 50 characters
-  (defun exwm-rename-buffer ()
-    (interactive)
-    (exwm-workspace-rename-buffer
-     (concat exwm-class-name ":"
-             (if (<= (length exwm-title) 50) exwm-title
-               (concat (substring exwm-title 0 49) "...")))))
-  (add-hook 'exwm-update-class-hook 'exwm-rename-buffer)
-  (add-hook 'exwm-update-title-hook 'exwm-rename-buffer)
-
-  ;; 's-R': Reset
-  (exwm-input-set-key (kbd "s-R") #'exwm-reset)
-  ;; 's-\': Switch workspace
-  (exwm-input-set-key (kbd "s-\\") #'exwm-workspace-switch)
-  ;; 's-N': Switch to certain workspace
-  (dotimes (i 10)
-    (exwm-input-set-key (kbd (format "s-%d" i))
-                        (lambda ()
-                          (interactive)
-                          (exwm-workspace-switch-create i))))
-  ;; 's-SPC': Launch application
-  ;; (exwm-input-set-key
-  ;;  (kbd "s-SPC")
-  ;;  (lambda (command)
-  ;;    (interactive (list (read-shell-command "➜ ")))
-  ;;    (start-process-shell-command command nil command)))
-
-  (exwm-input-set-key (kbd "M-s-SPC") #'counsel-linux-app)
-
-  ;; Shorten 'C-c C-q' to 'C-q'
-  (define-key exwm-mode-map [?\C-q] #'exwm-input-send-next-key)
-
-  ;; Line-editing shortcuts
-  (setq exwm-input-simulation-keys
-	'(;; movement
-          ([?\C-b] . [left])
-          ([?\M-b] . [C-left])
-          ([?\C-f] . [right])
-          ([?\M-f] . [C-right])
-          ([?\C-p] . [up])
-          ([?\C-n] . [down])
-          ([?\C-a] . [home])
-          ([?\C-e] . [end])
-          ([?\M-v] . [prior])
-          ([?\C-v] . [next])
-          ([?\C-d] . [delete])
-          ([?\C-k] . [S-end delete])
-          ;; cut/copy/paste
-          ;; ([?\C-w] . [?\C-x])
-          ([?\M-w] . [?\C-c])
-          ([?\C-y] . [?\C-v])
-          ;; search
-          ([?\C-s] . [?\C-f])))
-
-  ;; Enable EXWM
-  (exwm-enable)
-
-  (add-hook 'exwm-init-hook #'exwm-config--fix/ido-buffer-window-other-frame)
-
-  (require 'exwm-systemtray)
-  (exwm-systemtray-enable)
-
-  (require 'exwm-randr)
-  (exwm-randr-enable)
-
-  ;; (exwm-input-set-key
-  ;;  (kbd "s-<return>")
-  ;;  (lambda ()
-  ;;    (interactive)
-  ;;    (start-process "urxvt" nil "urxvt")))
-
-  ;; (exwm-input-set-key
-  ;;  (kbd "s-SPC")  ;; rofi doesn't properly launch programs when started from emacs
-  ;;  (lambda ()
-  ;;    (interactive)
-  ;;    (start-process-shell-command "rofi-run" nil "rofi -show run -display-run '> ' -display-window ' 🗔 '")))
-
-  ;; (exwm-input-set-key
-  ;;  (kbd "s-/")
-  ;;  (lambda ()
-  ;;    (interactive)
-  ;;    (start-process-shell-command "rofi-win" nil "rofi -show window  -display-run '> ' -display-window ' 🗔 '")))
-
-  ;; (exwm-input-set-key
-  ;;  (kbd "M-SPC")
-  ;;  (lambda ()
-  ;;    (interactive)
-  ;;    (start-process "rofi-pass" nil "rofi-pass")))
-
-  ;; (exwm-input-set-key
-  ;;  (kbd "<XF86AudioMute>")
-  ;;  (lambda ()
-  ;;    (interactive)
-  ;;    (start-process-shell-command "pamixer" nil "pamixer --toggle-mute")))
-
-  ;; (exwm-input-set-key
-  ;;  (kbd "<XF86AudioLowerVolume>")
-  ;;  (lambda ()
-  ;;    (interactive)
-  ;;    (start-process-shell-command "pamixer" nil "pamixer --allow-boost --decrease 5")))
-
-  ;; (exwm-input-set-key
-  ;;  (kbd "<XF86AudioRaiseVolume>")
-  ;;  (lambda ()
-  ;;    (interactive)
-  ;;    (start-process-shell-command "pamixer" nil "pamixer --allow-boost --increase 5")))
-
-  ;; (exwm-input-set-key
-  ;;  (kbd "<XF86AudioPlay>")
-  ;;  (lambda ()
-  ;;    (interactive)
-  ;;    (start-process-shell-command "mpc" nil "mpc toggle")))
-
-  ;; (exwm-input-set-key
-  ;;  (kbd "<XF86AudioPrev>")
-  ;;  (lambda ()
-  ;;    (interactive)
-  ;;    (start-process-shell-command "mpc" nil "mpc prev")))
-
-  ;; (exwm-input-set-key
-  ;;  (kbd "<XF86AudioNext>")
-  ;;  (lambda ()
-  ;;    (interactive)
-  ;;    (start-process-shell-command "mpc" nil "mpv next")))
-
-  (defun ab--exwm-pasystray ()
-    "A command used to start pasystray."
-    (interactive)
-    (if (executable-find "pasystray")
-	(progn
-          (message "EXWM: starting pasystray ...")
-          (start-process-shell-command "pasystray" nil "pasystray --notify=all"))
-      (message "EXWM: pasystray is not installed, abort!")))
-
-  (add-hook 'exwm-init-hook #'ab--exwm-pasystray)
-
-  (exwm-input-set-key
-   (kbd "s-t")
-   (lambda ()
-     (interactive)
-     (exwm-floating-toggle-floating)))
-
-  (exwm-input-set-key
-   (kbd "s-f")
-   (lambda ()
-     (interactive)
-     (exwm-layout-toggle-fullscreen)))
-
-  (exwm-input-set-key
-   (kbd "s-w")
-   (lambda ()
-     (interactive)
-     (kill-buffer (current-buffer))))
-
-  (exwm-input-set-key
-   (kbd "s-q")
-   (lambda ()
-     (interactive)
-     (exwm-manage--kill-client))))
-#+end_src
-
-**** sxhkdrc
-:PROPERTIES:
-:header-args+: :tangle ~/.config/sxhkd/sxhkdrc :mkdirp yes
-:END:
-
-#+begin_src conf :tangle no
-# terminal emulator
-super + Return
-	urxvt
-
-# program launcher
-super + space
-	rofi -show run -display-run '> ' -display-window ' 🗔 '
-
-# window finder
-super + slash
-	rofi -show window  -display-run '> ' -display-window ' 🗔 '
-
-# password manager
-alt + space
-	rofi-pass
-
-# make sxhkd reload its configuration files:
-super + Escape
-	pkill -USR1 -x sxhkd
-
-# volume {up,down}
-XF86Audio{Raise,Lower}Volume
-	pamixer --allow-boost --{in,de}crease 5
-
-# mute
-XF86AudioMute
-	pamixer --toggle-mute
-
-# playback control
-XF86Audio{Play,Prev,Next}
-	mpc {toggle,prev,next}
-
-# Toggle keyboard layout
-# super + F7
-#	toggle-layout
+  (general-evil-setup t)
+
+  (general-override-mode)
+
+  (general-create-definer
+    ab--mode-leader-keys
+    :keymaps 'override
+    :states '(emacs normal visual motion insert)
+    :non-normal-prefix "C-,"
+    :prefix ",")
+
+  (general-create-definer
+    ab--leader-keys
+    :keymaps 'override
+    :states '(emacs normal visual motion insert)
+    :non-normal-prefix "M-m"
+    :prefix "SPC"))
+#+end_src
 
-# Toggle Xfce presentation mode
-# XF86LaunchB
-#	toggle-presentation-mode
+*** evil
 
-# monitor brightness
-XF86MonBrightness{Up,Down}
-	light -{A,U} 5
+#+begin_src emacs-lisp
+(use-package evil
+  :demand t
+  :hook (view-mode . evil-motion-state)
+  :config (evil-mode 1))
+#+end_src
 
-super + apostrophe
-	rofi-light
+#+begin_src emacs-lisp
+(use-package evil-escape
+  :demand t
+  :init
+  (setq evil-escape-excluded-states '(normal visual multiedit emacs motion)
+        evil-escape-excluded-major-modes '(neotree-mode)
+        evil-escape-key-sequence "jk"
+        evil-escape-delay 0.25)
+  :general
+  (:states '(insert replace visual operator)
+    "C-g" #'evil-escape)
+  :config
+  (evil-escape-mode 1)
+  ;; no `evil-escape' in minibuffer
+  (push #'minibufferp evil-escape-inhibit-functions))
 #+end_src
 
 *** [[https://orgmode.org/][Org mode]]
@@ -777,7 +650,15 @@ In short, my favourite way of life.
 #+begin_src emacs-lisp
 (setq org-src-tab-acts-natively t
       org-src-preserve-indentation nil
-      org-edit-src-content-indentation 0)
+      org-edit-src-content-indentation 0
+      org-html-divs '((preamble  "header" "preamble")
+                      (content   "main"   "content")
+                      (postamble "footer" "postamble"))
+      org-html-doctype "html5"
+      org-html-html5-fancy t
+      org-html-postamble nil)
+(add-hook 'org-mode-hook 'org-indent-mode)
+(use-package htmlize)
 #+end_src
 
 *** [[https://magit.vc/][Magit]]
@@ -790,6 +671,7 @@ Not just how I do git, but /the/ way to do git.
 
 #+begin_src emacs-lisp
 (use-package magit
+  :general (ab--leader-keys "g s" 'magit-status)
   :defer t
   :bind (("s-g"     . magit-status)
 	 ("C-x g"   . magit-status)
@@ -814,6 +696,7 @@ There's no way I could top that, so I won't attempt to.
 
 #+begin_src emacs-lisp
 (use-package ivy
+  :defer 1
   :bind
   (:map ivy-minibuffer-map
         ([escape] . keyboard-escape-quit)
@@ -831,6 +714,7 @@ There's no way I could top that, so I won't attempt to.
 
 #+begin_src emacs-lisp
 (use-package swiper
+  :general (:states 'normal "/" 'swiper)
   :bind (([remap isearch-forward]  . swiper)
 	 ([remap isearch-backward] . swiper)))
 #+end_src
@@ -840,6 +724,10 @@ There's no way I could top that, so I won't attempt to.
 #+begin_src emacs-lisp
 (use-package counsel
   :defer 1
+  :general (ab--leader-keys
+    "f r" 'counsel-recentf
+    "SPC" 'counsel-M-x
+    "."   'counsel-find-file)
   :bind (([remap execute-extended-command] . counsel-M-x)
          ([remap find-file] . counsel-find-file)
          ("s-r"     . counsel-recentf)
@@ -931,6 +819,36 @@ TODO: break this giant source block down into individual org sections.
   (setq undo-tree-mode-lighter ""))
 #+end_src
 
+* Editing
+
+** Company
+
+#+begin_src emacs-lisp
+(use-package company
+  :defer 5
+  :bind
+  (:map company-active-map
+	([tab] . company-complete-common-or-cycle))
+  :custom
+  (company-idle-delay 0.3)
+  (company-minimum-prefix-length 1)
+  (company-selection-wrap-around t)
+  (company-dabbrev-char-regexp "\\sw\\|\\s_\\|[-_]")
+  :config
+  (global-company-mode t))
+#+end_src
+
+** Customizations
+
+#+begin_src emacs-lisp
+(ab--leader-keys
+  "b s" 'save-buffer
+  "b b" 'ivy-switch-buffer
+  ","   'ivy-switch-buffer
+  "b k" 'kill-this-buffer
+  "q q" 'evil-save-and-quit)
+#+end_src
+
 * Syntax and spell checking
 #+begin_src emacs-lisp
 (use-package flycheck
@@ -944,7 +862,21 @@ TODO: break this giant source block down into individual org sections.
 #+end_src
 * Programming modes
 
-** [[https://github.com/leanprover/lean-mode][Lean]]
+** [[http://alloytools.org][Alloy]] (with [[https://github.com/dwwmmn/alloy-mode][alloy-mode]])
+
+#+begin_src emacs-lisp
+(use-package alloy-mode
+  :config (setq alloy-basic-offset 2))
+#+end_src
+
+** [[https://coq.inria.fr][Coq]] (with [[https://github.com/ProofGeneral/PG][Proof General]])
+
+#+begin_src emacs-lisp
+(use-package proof-site  ; Proof General
+  :load-path "lib/proof-site/generic/")
+#+end_src
+
+** [[https://leanprover.github.io][Lean]] (with [[https://github.com/leanprover/lean-mode][lean-mode]])
 
 #+begin_src emacs-lisp
 (use-package lean-mode
@@ -965,6 +897,15 @@ TODO: break this giant source block down into individual org sections.
 	flycheck-disabled-checkers '(haskell-stack-ghc haskell-ghc)))
 #+end_src
 
+*** [[https://github.com/jyp/dante][dante]]
+
+#+begin_src emacs-lisp
+(use-package dante
+  :after haskell-mode
+  :commands dante-mode
+  :hook (haskell-mode . dante-mode))
+#+end_src
+
 *** [[https://github.com/mpickering/hlint-refactor-mode][hlint-refactor]]
 
 Emacs bindings for [[https://github.com/ndmitchell/hlint][hlint]]'s refactor option. This requires the refact
@@ -1142,6 +1083,229 @@ Emacs package that displays available keybindings in popup
   :config (which-key-mode))
 #+end_src
 
+** [[https://github.com/seagle0128/doom-modeline][doom-modeline]]
+
+#+begin_src emacs-lisp
+(use-package doom-modeline
+  :demand t
+  :config (setq doom-modeline-height 32)
+  :hook (after-init . doom-modeline-init))
+#+end_src
+
+** [[https://github.com/11111000000/tao-theme-emacs][tao-theme]]
+
+#+begin_src emacs-lisp
+(use-package tao-theme
+  :demand t
+  :config (load-theme 'tao-yang t))
+#+end_src
+
+* Email
+** [[https://notmuchmail.org][notmuch]]
+
+#+begin_src emacs-lisp
+(defun ab/notmuch ()
+  "Delete other windows, then launch `notmuch'."
+  (interactive)
+  (require 'notmuch)
+  (delete-other-windows)
+  (notmuch))
+
+;; (ab--leader-keys
+;;   "m"   'ab/notmuch
+;;   "s"   'save-buffer
+;;   "SPC" 'counsel-M-x)
+
+;; (map!
+;;  :leader
+;;  :desc "notmuch" :n "m" #'ab/notmuch
+;;  (:desc "search" :prefix "/"
+;;    :desc "notmuch" :n "m" #'counsel-notmuch))
+#+end_src
+
+#+begin_src emacs-lisp
+(defvar ab-maildir "~/mail")
+
+(use-package sendmail
+  ;; :ensure nil
+  :config
+  (setq sendmail-program "/usr/bin/msmtp"
+        mail-specify-envelope-from t
+        mail-envelope-from 'header))
+
+(use-package message
+  ;; :ensure nil
+  :config
+  (setq message-kill-buffer-on-exit t
+        message-send-mail-function 'message-send-mail-with-sendmail
+        message-sendmail-envelope-from 'header
+        message-directory "drafts"
+        message-user-fqdn "fencepost.gnu.org")
+  (add-hook 'message-mode-hook
+            (lambda () (setq fill-column 65
+                        message-fill-column 65)))
+  (add-hook 'message-mode-hook
+            #'flyspell-mode)
+  ;; (add-hook 'notmuch-message-mode-hook #'+doom-modeline|set-special-modeline)
+  ;; TODO: is there a way to only run this when replying and not composing?
+  ;; (add-hook 'notmuch-message-mode-hook
+  ;;           (lambda () (progn
+  ;;                   (newline)
+  ;;                   (newline)
+  ;;                   (forward-line -1)
+  ;;                   (forward-line -1))))
+  ;; (add-hook 'message-setup-hook
+  ;;           #'mml-secure-message-sign-pgpmime)
+  )
+
+(after! mml-sec
+  (setq mml-secure-openpgp-encrypt-to-self t
+        mml-secure-openpgp-sign-with-sender t))
+
+(use-package notmuch
+  :general (ab--leader-keys "m" 'ab/notmuch)
+  :config
+  (setq notmuch-hello-sections
+        '(notmuch-hello-insert-header
+          notmuch-hello-insert-saved-searches
+          ;; notmuch-hello-insert-search
+          notmuch-hello-insert-alltags)
+        notmuch-search-oldest-first nil
+        notmuch-show-all-tags-list t
+        notmuch-hello-thousands-separator ","
+        notmuch-fcc-dirs
+        '(("amin@aminb.org"            . "amin/Sent")
+          ("abandali@uwaterloo.ca"     . "\"uwaterloo/Sent Items\"")
+          ("amin.bandali@uwaterloo.ca" . "\"uwaterloo/Sent Items\"")
+          ("aminb@gnu.org"             . "gnu/Sent")
+          (".*"                        . "sent"))
+        notmuch-search-result-format
+        '(("date" . "%12s ")
+          ("count" . "%-7s ")
+          ("authors" . "%-40s ")
+          ("subject" . "%s ")
+          ("tags" . "(%s)")))
+  ;; (add-hook 'visual-fill-column-mode-hook
+  ;;           (lambda ()
+  ;;             (when (string= major-mode 'notmuch-message-mode)
+  ;;               (setq visual-fill-column-width 70))))
+  ;; (set! :evil-state 'notmuch-message-mode 'insert)
+  ;; (advice-add #'notmuch-bury-or-kill-this-buffer
+  ;;             :override #'kill-this-buffer)
+  :bind
+  (:map notmuch-hello-mode-map
+	("g" . notmuch-poll-and-refresh-this-buffer)
+	("i" . (lambda ()
+		 "Search for `inbox' tagged messages"
+		 (interactive)
+		 (notmuch-hello-search "tag:inbox")))
+	("u" . (lambda ()
+		 "Search for `unread' tagged messages"
+		 (interactive)
+		 (notmuch-hello-search "tag:unread")))
+	("M" . (lambda ()
+		 "Compose new mail and prompt for sender"
+		 (interactive)
+		 (let ((current-prefix-arg t))
+		   (call-interactively #'notmuch-mua-new-mail)))))
+  (:map notmuch-search-mode-map
+	("g" . notmuch-poll-and-refresh-this-buffer)
+	("k" . (lambda ()
+		 "Mark message read"
+		 (interactive)
+		 (notmuch-search-tag '("-unread"))
+		 ;; (notmuch-search-archive-thread)
+		 (notmuch-search-next-thread)))
+	("u" . (lambda ()
+		 "Mark message unread"
+		 (interactive)
+		 (notmuch-search-tag '("+unread"))
+		 (notmuch-search-next-thread)))
+	("K" . (lambda ()
+		 "Mark message deleted"
+		 (interactive)
+		 (notmuch-search-tag '("-unread" "-inbox" "+deleted"))
+		 (notmuch-search-archive-thread)))
+	("S" . (lambda ()
+		 "Mark message as spam"
+		 (interactive)
+		 (notmuch-search-tag '("-unread" "-inbox" "-webmasters" "+spam"))
+		 (notmuch-search-archive-thread))))
+  (:map notmuch-tree-mode-map  ; TODO: additional bindings
+	("S" . (lambda ()
+		 "Mark message as spam"
+		 (interactive)
+		 (notmuch-tree-tag '("-unread" "-inbox" "-webmasters" "+spam"))
+		 (notmuch-tree-archive-thread))))
+)
+
+;; (use-package counsel-notmuch
+;;   :commands counsel-notmuch)
+
+(after! notmuch-crypto
+  (setq notmuch-crypto-process-mime t))
+
+;; (after! evil
+;;   (mapc (lambda (str) (evil-set-initial-state (car str) (cdr str)))
+;;         '((notmuch-hello-mode . emacs)
+;;           (notmuch-search-mode . emacs)
+;;           (notmuch-tree-mode . emacs))))
+
+(after! recentf
+  (add-to-list 'recentf-exclude (expand-file-name ab-maildir)))
+#+end_src
+
+** supercite
+
+#+begin_src emacs-lisp :tangle no
+(use-package supercite
+  :commands sc-cite-original
+  :init
+  (add-hook 'mail-citation-hook 'sc-cite-original)
+
+  (defun sc-remove-existing-signature ()
+    (save-excursion
+      (goto-char (region-beginning))
+      (when (re-search-forward message-signature-separator (region-end) t)
+        (delete-region (match-beginning 0) (region-end)))))
+
+  (add-hook 'mail-citation-hook 'sc-remove-existing-signature)
+
+  (defun sc-remove-if-not-mailing-list ()
+    (unless (assoc "list-id" sc-mail-info)
+      (setq attribution sc-default-attribution
+            citation (concat sc-citation-delimiter
+                             sc-citation-separator))))
+
+  (add-hook 'sc-attribs-postselect-hook 'sc-remove-if-not-mailing-list)
+
+  :config
+  (defun sc-fill-if-different (&optional prefix)
+    "Fill the region bounded by `sc-fill-begin' and point.
+Only fill if optional PREFIX is different than
+`sc-fill-line-prefix'.  If `sc-auto-fill-region-p' is nil, do not
+fill region.  If PREFIX is not supplied, initialize fill
+variables.  This is useful for a regi `begin' frame-entry."
+    (if (not prefix)
+        (setq sc-fill-line-prefix ""
+              sc-fill-begin (line-beginning-position))
+      (if (and sc-auto-fill-region-p
+               (not (string= prefix sc-fill-line-prefix)))
+          (let ((fill-prefix sc-fill-line-prefix))
+            (unless (or (string= fill-prefix "")
+                        (save-excursion
+                          (goto-char sc-fill-begin)
+                          (or (looking-at ">+  +")
+                              (< (length
+                                  (buffer-substring (point)
+                                                    (line-end-position)))
+                                 65))))
+              (fill-region sc-fill-begin (line-beginning-position)))
+            (setq sc-fill-line-prefix prefix
+                  sc-fill-begin (line-beginning-position)))))
+nil))
+#+end_src
+
 * Post initialization
 :PROPERTIES:
 :CUSTOM_ID: post-initialization