user/src/com/google/gwt/user/History.gwt.xml

<!--                                                                        -->
<!-- Copyright 2008 Google Inc.                                             -->
<!-- Licensed under the Apache License, Version 2.0 (the "License"); you    -->
<!-- may not use this file except in compliance with the License. You may   -->
<!-- may obtain a copy of the License at                                    -->
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<!-- http://www.apache.org/licenses/LICENSE-2.0                             -->
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<!-- Unless required by applicable law or agreed to in writing, software    -->
<!-- distributed under the License is distributed on an "AS IS" BASIS,      -->
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<!-- limitations under the License.                                         -->

<!-- Deferred binding rules for browser selection.                          -->
<!--                                                                        -->
<!-- This module is typically inherited via com.google.gwt.user.User        -->
<!--                                                                        -->
<module>
  <inherits name="com.google.gwt.core.Core"/>
  <inherits name="com.google.gwt.user.UserAgent"/>

  <!-- Option to disable GWT double encoding of history tokens.               -->
  <!-- This double encoding is necessary to make History work across          -->
  <!-- browsers (especially Firefox).                                         -->
  <!-- If applications choose to disable double encoding they are responsible -->
  <!-- for ensuring that only tokens are used that work across browsers.      -->
  <define-property name="history.noDoubleEncoding" values="true,false" />
  <set-property name="history.noDoubleEncoding" value="false" />

  <replace-with class="com.google.gwt.user.client.History.NoopHistoryTokenEncoder">
    <when-type-is class="com.google.gwt.user.client.History.HistoryTokenEncoder" />
    <when-property-is name="history.noDoubleEncoding" value="true" />
  </replace-with>
</module>