Tested on Emacs 29, with AUCTeX and use-package
(use-package context
:hook
((ConTeXt-mode . turn-on-reftex)
;; personal preference
(ConTeXt-mode . variable-pitch-mode)
;; show \alpha as α and \mathbb{R} as ℝ
(ConTeXt-mode . prettify-symbols-mode)
;; shortcuts for symbols
(ConTeXt-mode . LaTeX-math-mode))
:custom
;; AUCTeX defaults to mkii; change to iv for iv and lmtx
(ConTeXt-Mark-version "IV")
(prettify-symbols-unprettify-at-point nil)
;; Let AUCTeX detect math environments
(texmathp-tex-commands '(("\\startformula" sw-on) ("\\stopformula" sw-off)))
(TeX-view-program-selection '((output-pdf "Zathura")))
(TeX-save-query nil)
(TeX-auto-save t)
(TeX-debug-bad-boxes t)
(TeX-debug-warnings t)
(TeX-electric-math '("$" . "$"))
(TeX-electric-sub-and-superscript t)
(reftex-plug-into-AUCTeX t)
(LaTeX-math-list
'(("o r" "mathbb{R}" nil nil)
("o Q" "qquad" nil nil)
("o q" "quad" nil nil)
("o n" "mathbb{N}" nil nil)
(?= "coloneq" nil nil)
("o c" "mathbb{C}" nil nil)))
:bind
(:map TeX-mode-map
("<f8>" . TeX-command-run-all))
(:map ConTeXt-mode-map ("(" . LaTeX-insert-left-brace))
(:map ConTeXt-mode-map ("[" . LaTeX-insert-left-brace))
(:map ConTeXt-mode-map ("{" . LaTeX-insert-left-brace))
:config
(add-hook 'TeX-after-compilation-finished-functions
#'TeX-revert-document-buffer)
(with-eval-after-load "tex-mode"
(dolist (symb
'(("\\colon" . ?:)
("\\mathbb{C}" . ?ℂ)
("\\mathbb{K}" . ?𝕂)))
(add-to-list 'tex--prettify-symbols-alist symb))))
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