To edit mathemagix code with emacs, the mmx mode can be used. It features automatic indentation and syntax highlighting. The necessary Emacs code is available in the file

in the Mathemagix source distribution and can be installed as follows:

cp mmx/mmxlight/emacs/mmx-mode.el $HOME/.emacs.d

The following should be added in the file .emacs in order to automatically activate the Mathemagix mode when loading a file with suffix .mmx or .amx:

(setq load-path 
  (append load-path (list (expand-file-name "~/.emacs.d"))))
(setq auto-mode-alist 
  (append auto-mode-alist '(("\\.mmx\\|\\.amx" . mmx-mode))))
(autoload 'mmx-mode 
  "mmx-mode.el" "Major mode for editing Mathemagix files" t)