sl-mech-mode.el

;; Copyright (c) 2016, Johns Hopkins University Applied Physics Laboratory
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(defun insert-eq (arg) (interactive "P")
       (insert (if (not arg) "≔" "==")))

(defun insert-star () (interactive "") (insert "☆"))
(defun insert-cup () (interactive "") (insert "⊎"))
(defun insert-arrow () (interactive "") (insert "↦"))

(define-minor-mode sl-mech-mode "sl mech minor mode"
  :lighter "SL" :keymap (let ((m (make-sparse-keymap)))
			  (define-key m (kbd "C-c =") 'insert-eq)
			  (define-key m (kbd "C-c *") 'insert-star)
			  (define-key m (kbd "C-c u") 'insert-cup)
			  (define-key m (kbd "C-c >") 'insert-arrow)
			  m))