*** progmodes/hideif.el	Sat Jan 19 14:53:52 2008
--- progmodes/hideif.el	Sat Jan 19 17:16:20 2008
***************
*** 473,478 ****
--- 473,486 ----
     ((numberp hif-token)
      (prog1 hif-token (hif-nexttoken)))
  
+    ((memq hif-token '(hif-minus hif-plus))
+     (let (result math-op)
+       (while (memq hif-token '(hif-plus hif-minus))
+ 	(setq math-op hif-token)
+ 	(hif-nexttoken)
+ 	(setq result (list math-op result (hif-factor))))
+       result))
+ 
     (t					; identifier
      (let ((ident hif-token))
        (if (memq ident '(or and))