Version 1.1 of package A68-Mode has just been released in GNU ELPA. You can now find it in M-x list-packages RET.
A68-Mode describes itself as: ==================================== Major mode for editing Algol 68 code ==================================== More at https://elpa.gnu.org/packages/a68-mode.html ## Summary: # a68-mode -- Algol68 major mode This mode fully supports automatic indentation and font locking (i.e. syntax highlighting) including the three comment styles. a68-mode supports the classical UPPER stropping regime and the more modern SUPPER stropping implemented by the GCC Algol 68 front-end. The mode will assume SUPPER stropping unless the string "pr UPPER pr" is found anywhere in the program text. ### Manual installation Just put a68-mode.el somewhere in your load-path and require it. Or visit the file with Emacs and M-x package-install-file RET. ### Customization The following variables are available for customization: * a68-indent-level (default 3): indentation offset * a68-comment-style-{upper,supper} (default "#"): the default comment style used by e.g. comment-dwim. ## Recent NEWS: [Not provided 🙁]