(size_window): Set the window's orig_top to nil when

changing heights, so that a future shrink_mini_window won't
restore a bogus height.

src/ChangeLog

 2001-01-26  Gerd Moellmann  <gerd@gnu.org>
 
+	* window.c (size_window): Set the window's orig_top to nil when
+	changing heights, so that a future shrink_mini_window won't
+	restore a bogus height.
+
 	* frame.c (do_switch_frame): If selected frame has a mini-window,
 	resize that to exact size.
 

src/window.c

@@ -2445,6 +2445,7 @@ size_window (window, size, width_p, nodelete_p)
       sideward = &w->hchild;
       forward = &w->vchild;
       w->height = make_number (size);
+      w->orig_height = Qnil;
     }
 
   if (!NILP (*sideward))
@@ -3803,6 +3804,8 @@ shrink_mini_window (w)
     }
   else if (XFASTINT (w->height) > 1)
     {
+      /* Distribute the additional lines of the mini-window
+	 among the other windows.  */
       Lisp_Object window;
       XSETWINDOW (window, w);
       enlarge_window (window, 1 - XFASTINT (w->height), 0);