KeyRemap4MacBook custom script

private.xml

<?xml version="1.0"?>
<root>
  <item>
    <name>Swap Esc and Fn</name>
    <identifier>private.swap_esc_and_tab</identifier>
    <autogen>__KeyToKey__ KeyCode::ESCAPE, KeyCode::FN</autogen>
    <autogen>__KeyToKey__ KeyCode::FN, KeyCode::ESCAPE</autogen>
  </item>

  <appdef>
    <appname>MacVim</appname>
    <equal>org.vim.MacVim</equal>
  </appdef>
   
  <item>
    <name>Change Right Option key to Control</name>
    <identifier>private.remap_rightOption_to_control</identifier>
    <only>MacVim</only>
    <autogen>__KeyToKey__ KeyCode::OPTION_R, KeyCode::CONTROL_R</autogen>
  </item>
</root>