Add pretty-font-mode for ligatures

lain/.emacs.d/config.org

@@ -1014,9 +1014,7 @@ from blanket trimming entire files.
   (use-package pretty-mode
     :hook (prog-mode . pretty-mode)
     :config
-    (pretty-deactivate-groups '(:arithmetic
-                                :sub-and-superscripts))
-    (pretty-activate-groups '(:equality
+    (pretty-deactivate-groups '(:equality
                                 :ordering
                                 :ordering-double
                                 :ordering-triple
@@ -1024,16 +1022,23 @@ from blanket trimming entire files.
                                 :arrows-twoheaded
                                 :punctuation
                                 :logic
-                              :sets)))
+                                :sets))
+
+    (pretty-activate-groups '(:sub-and-superscripts
+                              :greek
+                              :arithmetic-nary)))
 #+END_SRC
 
 *** Prettify-Symbols-Mode
 Allows custom unicode replacement of symbols. Fill in the gaps where
-pretty-mode left off.
+pretty-mode left off. See list of unicode symbols that can be used [[https://en.wikipedia.org/wiki/Mathematical_operators_and_symbols_in_Unicode][here]].
 **** Python
 #+BEGIN_SRC emacs-lisp
   (defun jf-prettify-python ()
-    (dolist (pair '(;; Syntax
+    (dolist (pair
+           ;; Syntax
+          '(("def" .      #x2131)
+           ("not" .      #x2757)
            ("in" .       #x2208)
            ("not in" .   #x2209)
            ("return" .   #x27fc)
@@ -1044,12 +1049,35 @@ pretty-mode left off.
            ("float" .    #x211d)
            ("str" .      #x1d54a)
            ("True" .     #x1d54b)
-           ("False" .    #x1d53d)))
+           ("False" .    #x1d53d)
+           ;; Mypy
+           ("Dict" .     #x1d507)
+           ("List" .     #x2112)
+           ("Tuple" .    #x2a02)
+           ("Set" .      #x2126)
+           ("Iterable" . #x1d50a)
+           ("Any" .      #x2754)
+           ("Union" .    #x22c3)))
       (push pair prettify-symbols-alist)))
 
   (add-hook 'python-mode-hook #'prettify-symbols-mode)
   (add-hook 'python-mode-hook #'jf-prettify-python)
 #+END_SRC
+*** Pretty fonts
+#+BEGIN_SRC emacs-lisp
+  (use-package pretty-fonts
+    :load-path jf-load-path
+    :config
+    (pretty-fonts-add-hook 'prog-mode-hook pretty-fonts-fira-code-alist)
+    (pretty-fonts-add-hook 'org-mode-hook pretty-fonts-fira-code-alist)
+    (pretty-fonts-set-fontsets-for-fira-code))
+#+END_SRC
+*** Rainbow Delimiters
+Make it easier to spot sexp depth by pairing delimiter colors.
+#+BEGIN_SRC emacs-lisp
+  (use-package rainbow-delimiters
+    :hook (prog-mode . rainbow-delimiters-mode))
+#+END_SRC
 ** Checkers
 *** Flycheck
 Flycheck highlights syntax errors in a few languages.