                                  (emacspeak-maths-input emacspeak-maths)))))
   (declare (special emacspeak-maths))
   (emacspeak-maths-ensure-server)
+  (when (string= "" latex)
+    (setq latex (emacspeak-maths-input emacspeak-maths)))
   (setf (emacspeak-maths-input emacspeak-maths) latex)
   (process-send-string
    (emacspeak-maths-client-process emacspeak-maths)


;;}}}
;;{{{ Navigators:

;;; Helper: Guess current math expression from TeX/LaTeX



(defun emacspeak-maths-enter (latex)
  "Send a LaTeX expression to Maths server.
Tries to guess default based on context.
Uses guessed default if user enters an empty string."
  (interactive
   (list
    (progn (emacspeak-maths-guess-input) ;guess based on context
