(ex-unix-type-shell): Fix customize type.

diff --git a/lisp/emulation/viper-ex.el b/lisp/emulation/viper-ex.el
index dc4d1c3eebdc496ade2ebc5f799866fc2b2d6dcb..4d3b8fd0921c7fd17db7501f71252c583997beeb 100644 (file)
--- a/lisp/emulation/viper-ex.el
+++ b/lisp/emulation/viper-ex.el
@@ -151,7 +151,7 @@
           "\\)")
          shell-file-name)))
   "Is the user using a unix-type shell under a non-OS?"
-  :type 'string
+  :type 'boolean
   :group 'viper-ex)
 
 (defcustom ex-unix-type-shell-options