Fix minor mode docstrings for the new meaning of a nil ARG.

[bpt/emacs.git] / lisp / iswitchb.el

diff --git a/lisp/iswitchb.el b/lisp/iswitchb.el
index e0da256..a7d3328 100644 (file)
--- a/lisp/iswitchb.el
+++ b/lisp/iswitchb.el
@@ -1118,10 +1118,9 @@ Return the modified list with the last element prepended to it."
 If BUFFER is visible in the current frame, return nil."
   (interactive)
   (let ((blist (iswitchb-get-buffers-in-frames 'current)))
-    ;;If the buffer is visible in current frame, return nil
-    (if (memq buffer blist)
-       nil
-      ;;  maybe in other frame or icon
+    ;; If the buffer is visible in current frame, return nil
+    (unless (member buffer blist)
+      ;; maybe in other frame or icon
       (get-buffer-window buffer 0) ; better than 'visible
       )))
 
@@ -1425,10 +1424,13 @@ See the variable `iswitchb-case' for details."
 
 ;;;###autoload
 (define-minor-mode iswitchb-mode
-  "Toggle Iswitchb global minor mode.
-With arg, turn Iswitchb mode on if ARG is positive, otherwise turn it off.
-This mode enables switching between buffers using substrings.  See
-`iswitchb' for details."
+  "Toggle Iswitchb mode.
+With a prefix argument ARG, enable Iswitchb mode if ARG is
+positive, and disable it otherwise.  If called from Lisp, enable
+the mode if ARG is omitted or nil.
+
+Iswitchb mode is a global minor mode that enables switching
+between buffers using substrings.  See `iswitchb' for details."
   nil nil iswitchb-global-map :global t :group 'iswitchb
   (if iswitchb-mode
       (add-hook 'minibuffer-setup-hook 'iswitchb-minibuffer-setup)