lang/org: add +pretty flag; move org-superstar

org-superstar is no longer enabled by default, due to unicode-related
crashes and general slowness betraying our "gotta go fast" mantra.

docs/modules.org

@@ -127,7 +127,7 @@ Modules that bring support for a language or group of languages to Emacs.
 + [[file:../modules/lang/nim/README.org][nim]] - TODO
 + nix - TODO
 + [[file:../modules/lang/ocaml/README.org][ocaml]] =+lsp= - TODO
-+ [[file:../modules/lang/org/README.org][org]] =+brain +dragndrop +gnuplot +hugo +ipython +journal +jupyter +noter +pandoc +pomodoro +present +roam= - TODO
++ [[file:../modules/lang/org/README.org][org]] =+brain +dragndrop +gnuplot +hugo +ipython +journal +jupyter +noter +pandoc +pomodoro +present +pretty +roam= - TODO
 + [[file:../modules/lang/php/README.org][php]] =+hack +lsp= - TODO
 + plantuml - TODO
 + purescript =+lsp= - TODO

modules/lang/org/README.org

@@ -70,13 +70,15 @@ https://www.mfoot.com/blog/2015/11/22/literate-emacs-configuration-with-org-mode
 + =+pomodoro= Enables a pomodoro timer for clocking time on tasks.
 + =+present= Enables integration with reveal.js, beamer and org-tree-slide, so
   Emacs can be used for presentations.
++ =+pretty= Enables pretty unicode symbols for bullets and priorities, and
+  better syntax highlighting for latex. Keep in mind: this can be expensive. If
+  org becomes too slow, it'd be wise to disable this flag.
 + =+roam= Enables org-roam integration. This requires ~sqlite3~ to be installed
   on your system.
 
 ** Plugins
 + [[https://github.com/hniksic/emacs-htmlize][htmlize]]
 + [[https://github.com/astahlman/ob-async][ob-async]]
-+ [[https://github.com/integral-dw/org-superstar-mode][org-superstar]]
 + [[https://github.com/rexim/org-cliplink][org-cliplink]]
 + [[https://github.com/magit/orgit][orgit]]
 + [[https://orgmode.org/][org-plus-contrib]]
@@ -122,6 +124,9 @@ https://www.mfoot.com/blog/2015/11/22/literate-emacs-configuration-with-org-mode
   + [[https://github.com/anler/centered-window-mode][centered-window]]
   + [[https://github.com/takaxp/org-tree-slide][org-tree-slide]]
   + [[https://gitlab.com/oer/org-re-reveal][org-re-reveal]]
++ =+pretty=
+  + [[https://github.com/integral-dw/org-superstar-mode][org-superstar]]
+  + [[https://github.com/harrybournis/org-fancy-priorities][org-fancy-priorities]]
 + =+roam=
   + [[https://github.com/org-roam/org-roam][org-roam]]
   + [[https://github.com/org-roam/company-org-roam][company-org-roam]]

modules/lang/org/config.el

@@ -895,25 +895,6 @@ compelling reason, so..."
         (set-marker p nil)))))
 
 
-(use-package! org-superstar ; "prettier" bullets
-  :hook (org-mode . org-superstar-mode)
-  :config
-  ;; Make leading stars truly invisible, by rendering them as spaces!
-  (setq org-superstar-leading-bullet ?\s
-        org-superstar-leading-fallback ?\s
-        org-hide-leading-stars nil)
-  ;; Don't do anything special for item bullets or TODOs by default; these slow
-  ;; down larger org buffers.
-  (setq org-superstar-prettify-item-bullets nil
-        org-superstar-special-todo-items nil
-        ;; ...but configure it in case the user wants it later
-        org-superstar-todo-bullet-alist
-        '(("TODO" . 9744)
-          ("[ ]"  . 9744)
-          ("DONE" . 9745)
-          ("[X]"  . 9745))))
-
-
 (use-package! org-crypt ; built-in
   :commands org-encrypt-entries org-encrypt-entry org-decrypt-entries org-decrypt-entry
   :hook (org-reveal-start . org-decrypt-entry)

modules/lang/org/contrib/pretty.el

@@ -0,0 +1,24 @@
+;;; lang/org/contrib/pretty.el -*- lexical-binding: t; -*-
+
+(after! org
+  (setq org-highlight-latex-and-related '(native script entities)))
+
+
+(use-package! org-superstar ; "prettier" bullets
+  :hook (org-mode . org-superstar-mode)
+  :init
+  :config
+  ;; Make leading stars truly invisible, by rendering them as spaces!
+  (setq org-superstar-leading-bullet ?\s
+        org-superstar-leading-fallback ?\s
+        org-hide-leading-stars nil
+        org-superstar-todo-bullet-alist
+        '(("TODO" . 9744)
+          ("[ ]"  . 9744)
+          ("DONE" . 9745)
+          ("[X]"  . 9745))))
+
+
+(use-package! org-fancy-priorities ; priority icons
+  :hook (org-mode . org-fancy-priorities-mode)
+  :config (setq org-fancy-priorities-list '("⚑" "⬆" "■")))

modules/lang/org/packages.el

@@ -34,7 +34,6 @@
 
 (package! avy)
 (package! htmlize :pin "86f22f211e9230857197c42a9823d3f05381deed")
-(package! org-superstar :pin "17481852c1bd09afea877635a3185261fc19fd64")
 (package! org-yt
   :recipe (:host github :repo "TobiasZawada/org-yt")
   :pin "40cc1ac76d741055cbefa13860d9f070a7ade001")
@@ -67,6 +66,9 @@
   (package! org-noter :pin "9ead81d42dd4dd5074782d239b2efddf9b8b7b3d"))
 (when (featurep! +pomodoro)
   (package! org-pomodoro :pin "aa07c11318f91219336197e62c47bc7a3d090479"))
+(when (featurep! +pretty)
+  (package! org-superstar :pin "17481852c1bd09afea877635a3185261fc19fd64")
+  (package! org-fancy-priorities :pin "819bb993b71e7253cefef7047306ab4e0f9d0a86"))
 (when (featurep! +present)
   (package! centered-window
     :recipe (:host github :repo "anler/centered-window-mode")