On Tue, May 10, 2016 at 6:51 PM Kaushal Modi <kaushal.modi@gmail.com> wrote:
I will see if I can find a workaround for it on 24.5. 

Here's a final try ..

Please replace the advising function with this one:

(defun modi/org-insert-org-entity-maybe (orig-fun &rest args)
  "When the universal prefix C-u is used before entering any character,
insert the character's `org-entity' name if available."
  (let ((pressed-key (char-to-string (elt (this-single-command-keys) 0)))
        entity-name)
    (when (and (listp args) (eq 4 (car args)))
      (setq entity-name (modi/org-entity-get-name pressed-key))
      (when entity-name
        (setq entity-name (concat "\\" entity-name "{}"))
        (insert entity-name)
        (message (concat "Inserted `org-entity' "
                         (propertize entity-name
                                     'face 'font-lock-function-name-face)
                         " for the symbol "
                         (propertize pressed-key
                                     'face 'font-lock-function-name-face)
                         "."))))
    (when (null entity-name)
      (apply orig-fun args))))

The only change is in this line:

 (let ((pressed-key (char-to-string (elt (this-single-command-keys) 0)))

I have quickly verified it to work the same in  both emacs 24.5 and emacs 25.x.

Let me know. Thanks for testing the code.
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Kaushal Modi