(walk-windows): Doc fix.

diff --git a/lisp/subr.el b/lisp/subr.el
index e0a8e0177ff8f9cfc888e6d7942237999768c2bc..f7bbad7b4052e0370015ee1f037b2bbb227d5bd2 100644 (file)
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -73,15 +73,24 @@ If ALL-FRAMES is neither nil nor t, count only the selected frame."
 (defun walk-windows (proc &optional minibuf all-frames)
   "Cycle through all visible windows, calling PROC for each one.
 PROC is called with a window as argument.
-Optional second arg MINIBUF t means count the minibuffer window
-even if not active.  If MINIBUF is neither t nor nil it means
-not to count the minibuffer even if it is active.
-
-Optional third arg ALL-FRAMES, if t, means include all frames.
-ALL-FRAMES nil or omitted means cycle within the selected frame,
-but include the minibuffer window (if MINIBUF says so) that that
-frame uses, even if it is on another frame.
-If ALL-FRAMES is neither nil nor t, stick strictly to the selected frame."
+
+Optional second arg MINIBUF t means count the minibuffer window even
+if not active.  MINIBUF nil or omitted means count the minibuffer iff
+it is active.  MINIBUF neither t nor nil means not to count the
+minibuffer even if it is active.
+
+Several frames may share a single minibuffer; if the minibuffer
+counts, all windows on all frames that share that minibuffer count
+too.  Therefore, when a separate minibuffer frame is active,
+`walk-windows' includes the windows in the frame from which you
+entered the minibuffer, as well as the minibuffer window.  But if the
+minibuffer does not count, only windows from WINDOW's frame count.
+
+Optional third arg ALL-FRAMES t means include windows on all frames.
+ALL-FRAMES nil or omitted means cycle within the frames as specified
+above.  ALL-FRAMES = `visible' means include windows on all visible frames.
+ALL-FRAMES = 0 means include windows on all visible and iconified frames.
+Anything else means restrict to WINDOW's frame."
   ;; If we start from the minibuffer window, don't fail to come back to it.
   (if (window-minibuffer-p (selected-window))
       (setq minibuf t))