APL might pique your interest, but not enough for you take final step forward to start hacking with it. GNU APL is there, waiting for you. Still not enough?
(use-package gnu-apl-mode :ensure t)
or download it, extract it, and load it with a
(add-to-list 'load-path "~/path-to/gnu-apl-mode") (require 'gnu-apl-mode)
Do you have any more reasons not to start hacking with GNU APL and Emacs?!
Never having studied a package like this before, it is educational. It is also revealing how much love and labor went into this delightful package.
Thanks you Elias Mårtenson; hear, hear!