Convert more defvars to defcustoms.

[gnu-emacs] / lisp / iswitchb.el

diff --git a/lisp/iswitchb.el b/lisp/iswitchb.el
index 9600bd1db2daef2d8e2ef03b634893d642679e75..a31828514bdafc680fc013756b1b2144752557c1 100644 (file)
--- a/lisp/iswitchb.el
+++ b/lisp/iswitchb.el
@@ -373,8 +373,13 @@ See also `iswitchb-newbuffer'."
   :group 'iswitchb)
 
 (defvar iswitchb-all-frames 'visible
-  "Argument to pass to `walk-windows' when finding visible buffers.
-See documentation of `walk-windows' for useful values.")
+  "Argument to pass to `walk-windows' when iswitchb is finding buffers.
+See documentation of `walk-windows' for useful values."
+  :type '(choice (const :tag "Selected frame only" nil)
+                (const :tag "All existing frames" t)
+                (const :tag "All visible frames" visible)
+                (const :tag "All frames on this terminal" 0))
+  :group 'iswitchb)
 
 (defcustom iswitchb-minibuffer-setup-hook nil
   "Iswitchb-specific customization of minibuffer setup.