--- __init__.py.orig	2008-09-04 17:11:30.000000000 +0400
+++ __init__.py	2008-09-12 19:52:29.000000000 +0400
@@ -2655,7 +2655,7 @@
         (num_index1, num_index2) = (self.index(index1), self.index(index2))
         if (num_index1 is not None) and (num_index2 is not None):
             for i in range(num_index1, num_index2 + 1):
-                if 'command' in self.entryconfig(i):
+                if self.entrycget(i, 'command'):
                     c = str(self.entrycget(i, 'command'))
                     if c in self._tclCommands:
                         cmds.append(c)