(what-page): Make sure we don't inf-loop if

page-delimiter matches the empty string.

lisp/ChangeLog

+2009-09-16  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+	* textmodes/page.el (what-page): Make sure we don't inf-loop if
+	page-delimiter matches the empty string.
+
 2009-09-16  Glenn Morris  <rgm@gnu.org>
 
 	* emacs-lisp/bytecomp.el (byte-compile-not-obsolete-vars): Rename from

lisp/textmodes/page.el

@@ -153,6 +153,8 @@ thus showing a page other than the one point was originally in."
 	    (opoint (point)))
 	(goto-char (point-min))
 	(while (re-search-forward page-delimiter opoint t)
+          (if (= (match-beginning 0) (match-end 0))
+              (forward-char 1))
 	  (setq count (1+ count)))
 	(message "Page %d, line %d"
 		 count