Index: Lib/lib-tk/Tkinter.py
===================================================================
--- Lib/lib-tk/Tkinter.py	(revision 73085)
+++ Lib/lib-tk/Tkinter.py	(working copy)
@@ -3390,7 +3390,7 @@
         bounding box may refer to a region outside the
         visible area of the window.
         """
-        return self.tk.call(self._w, 'bbox', index)
+        return self._getints(self.tk.call(self._w, 'bbox', index))
 
     def delete(self, first, last=None):
         """Delete one or more elements of the spinbox.
@@ -3399,9 +3399,9 @@
         and last is the index of the character just after
         the last one to delete. If last isn't specified it
         defaults to first+1, i.e. a single character is
-        deleted.  This command returns an empty string.
+        deleted.
         """
-        return self.tk.call(self._w, 'delete', first, last)
+        self.tk.call(self._w, 'delete', first, last)
 
     def get(self):
         """Returns the spinbox's string"""
@@ -3411,9 +3411,9 @@
         """Alter the position of the insertion cursor.
 
         The insertion cursor will be displayed just before
-        the character given by index. Returns an empty string
+        the character given by index.
         """
-        return self.tk.call(self._w, 'icursor', index)
+        self.tk.call(self._w, 'icursor', index)
 
     def identify(self, x, y):
         """Returns the name of the widget at position x, y
@@ -3423,24 +3423,20 @@
         return self.tk.call(self._w, 'identify', x, y)
 
     def index(self, index):
-        """Returns the numerical index corresponding to index
-        """
+        """Returns the numerical index corresponding to index."""
         return self.tk.call(self._w, 'index', index)
 
     def insert(self, index, s):
-        """Insert string s at index
+        """Insert string s at index."""
+        self.tk.call(self._w, 'insert', index, s)
 
-         Returns an empty string.
-        """
-        return self.tk.call(self._w, 'insert', index, s)
-
     def invoke(self, element):
         """Causes the specified element to be invoked
 
         The element could be buttondown or buttonup
         triggering the action associated with it.
         """
-        return self.tk.call(self._w, 'invoke', element)
+        self.tk.call(self._w, 'invoke', element)
 
     def scan(self, *args):
         """Internal function."""