--- a/kharon.py	Mon Dec 08 15:41:38 2008 -0800
+++ b/kharon.py	Mon Dec 08 15:58:51 2008 -0800
@@ -1,9 +1,49 @@
 #! /usr/bin/env python3.0
+# ----------------------------------------------------------------------------
+# Copyright (c) 2006, Atul Varma
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#
+#   * Redistributions in binary form must reproduce the above
+#     copyright notice, this list of conditions and the following
+#     disclaimer in the documentation and/or other materials provided
+#     with the distribution.
+#
+#   * Neither the name of Kharon nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+# ----------------------------------------------------------------------------
 
 '''
-   This is a drop-in replacement for rm, with support for undo.
+   This is Kharon, a drop-in replacement for rm, with support for undo.
 '''
 
+# TODO:
+#
+#   * Add support for expiration, so that if removed files aren't undeleted
+#     within a certain amount of time, they are purged.
+#
+#   * Optional log messages for deletions.
+
 import os
 import re
 import sys
@@ -27,7 +67,7 @@
     def save(self):
         state = {}
         keys = [key for key in self.__dict__
-                if not key.startswith('__')]
+                if not key.startswith('_')]
         for key in keys:
             state[key] = self.__dict__[key]
         json.dump(state, open(self.__filename, 'w'))