Emacs lisp snippet to turn Elixir into a charming language (during editing only)

elixir-charming.el

(defconst elixir--cabo-prettify-symbols-alist
  '(
    ("->" . ?➙) ; → ➜➽➤
    ("::" . ?∷)
    ("<-" . ?⬅) ; ←
    ("<<" . ?⟪ ) ; «≪
    ("=>" . ?⇒)
    (">>" . ?⟫ ) ; »≫
    ("do" . ?⫷)
    ("do:" . ?⨸) ; ❢ ⋮ ⪓ ⪣ ⫶ ⧴ ⧔ ⋮ ÷ ≑ ≕ ⊰ ⨷ ⧥ ⨸
    ("end" . ?⫸)
    ("fn" . ?Ƒ) ; ?λ⩹
    ("for" . ?∀)
    ("when" . ?⨇) ; ⫿ ⎮∣ ⫼
    ("|>" . ?⩥) ; ➤➧➲➽⇛⇥⇶⇉⇢➾☞
    ))

(defun elixir-cabo ()
  (setq-local prettify-symbols-alist elixir--cabo-prettify-symbols-alist)
  (prettify-symbols-mode 1))

(add-hook 'elixir-mode-hook 'elixir-cabo)