A system file for Karabiner

private.xml

<?xml version="1.0"?>
<root>
  <!-- Tutorials: https://github.com/tekezo/Karabiner/blob/master/src/core/server/Resources/include/checkbox/samples.xml -->
  <item>
      <name>Hyper</name>
      <appendix>(F19 to Hyper (ctrl+shift+cmd+opt))</appendix>
      <identifier>private.f192f19_escape</identifier>
      <autogen>
        --KeyOverlaidModifier--
        KeyCode::F19,
        KeyCode::COMMAND_L,
        ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L,
      </autogen>
  </item>
  <!--
  <item>
      <name>Proper Shift Usage</name>

      <item>
          <name>Force yourself to use the correct shift keys.</name>
          <identifier>space_cadet.force_correct_shifts</identifier>

          <autogen>--KeyToKey-- KeyCode::Q, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::W, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::E, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::R, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::T, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::A, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::S, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::D, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::F, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::G, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::Z, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::X, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::C, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::V, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>

          <autogen>--KeyToKey-- KeyCode::KEY_1, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::KEY_2, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::KEY_3, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::KEY_4, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::KEY_5, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>

          <autogen>--KeyToKey-- KeyCode::KEY_6, ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::KEY_7, ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::KEY_8, ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::KEY_9, ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::KEY_0, ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::EQUAL, ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::MINUS, ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>

          <autogen>--KeyToKey-- KeyCode::Y,         ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::U,         ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::I,         ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::O,         ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::P,         ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::H,         ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::J,         ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::K,         ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::L,         ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::SEMICOLON, ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::N,         ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::M,         ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::COMMA,     ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::DOT,       ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
          <autogen>--KeyToKey-- KeyCode::QUOTE,     ModifierFlag::SHIFT_R, KeyCode::VK_NONE</autogen>
      </item>
  </item>
    -->
    <!--
      Map fn to be Meta
      Lame hack needed: Download the wrap_keys folder (https://github.com/tekezo/Karabiner/tree/master/src/core/server/Resources/include/checkbox/commons/wrap_keys)
      to
      /Users/arleym/Library/Application Support/Karabine/ -->
    <item>
       <name>Meta</name>
       <appendix>Fn+Escape,Space,Tab to ⌃⌥⌘+ Escape,Space,Tab</appendix>
       <appendix>(+ Fn+click to ⌃⌥⌘+click)</appendix>
       <appendix>Makes Fn key behave as a ⌃⌥⌘ key, but only when pressed in combination with</appendix>
       <appendix>a letter, number, symbol or escape,space,tab. Fn behaves as a normal Fn key otherwise.</appendix>
       <identifier>remap.fnletter_to_meta</identifier>
       <include path="wrap_keys/alphabet.xml">
          <replacementdef>
             <replacementname>BEFORE</replacementname>
             <replacementvalue>ModifierFlag::FN</replacementvalue>
          </replacementdef>
          <replacementdef>
             <replacementname>AFTER</replacementname>
             <replacementvalue>ModifierFlag::CONTROL_L | ModifierFlag::OPTION_L | ModifierFlag::COMMAND_L</replacementvalue>
          </replacementdef>
       </include>
       <include path="wrap_keys/number.xml">
          <replacementdef>
             <replacementname>BEFORE</replacementname>
             <replacementvalue>ModifierFlag::FN</replacementvalue>
          </replacementdef>
          <replacementdef>
             <replacementname>AFTER</replacementname>
             <replacementvalue>ModifierFlag::CONTROL_L | ModifierFlag::OPTION_L | ModifierFlag::COMMAND_L</replacementvalue>
          </replacementdef>
       </include>
       <include path="wrap_keys/symbol.xml">
          <replacementdef>
             <replacementname>BEFORE</replacementname>
             <replacementvalue>ModifierFlag::FN</replacementvalue>
          </replacementdef>
          <replacementdef>
             <replacementname>AFTER</replacementname>
             <replacementvalue>ModifierFlag::CONTROL_L | ModifierFlag::OPTION_L | ModifierFlag::COMMAND_L</replacementvalue>
          </replacementdef>
       </include>
       <include path="wrap_keys/pointing_button.xml">
          <replacementdef>
             <replacementname>BEFORE</replacementname>
             <replacementvalue>ModifierFlag::FN</replacementvalue>
          </replacementdef>
          <replacementdef>
             <replacementname>AFTER</replacementname>
             <replacementvalue>ModifierFlag::CONTROL_L | ModifierFlag::OPTION_L | ModifierFlag::COMMAND_L</replacementvalue>
          </replacementdef>
       </include>
       <autogen>__KeyToKey__ KeyCode::ESCAPE, ModifierFlag::FN, KeyCode::ESCAPE, ModifierFlag::CONTROL_L | ModifierFlag::OPTION_L | ModifierFlag::COMMAND_L</autogen>
       <autogen>__KeyToKey__ KeyCode::SPACE,  ModifierFlag::FN, KeyCode::SPACE,  ModifierFlag::CONTROL_L | ModifierFlag::OPTION_L | ModifierFlag::COMMAND_L</autogen>
       <autogen>__KeyToKey__ KeyCode::TAB,    ModifierFlag::FN, KeyCode::TAB,    ModifierFlag::CONTROL_L | ModifierFlag::OPTION_L | ModifierFlag::COMMAND_L</autogen>
    </item>
    <!--

      Ideas:
      - Meta Arrows to swap between apps?
      - meta enter to numpad enter?

     -->
     <!-- https://gist.github.com/mattdrose/ea65e490040837f16b39 -->
     <appdef>
      <appname>TERMINAL</appname>
      <equal>com.apple.Terminal</equal>
    </appdef>
    <appdef>
      <appname>SUBLIMETEXT</appname>
      <equal>com.sublimetext.3</equal>
    </appdef>
    <item>
      <name>Hyper + Right/Left (Default)</name>
      <appendix>hyper+right/left to jump tabs</appendix>
      <identifier>hyper_tabs.default</identifier>
      <not>SUBLIMETEXT, TERMINAL</not>
      <autogen>
        __KeyToKey__
        KeyCode::CURSOR_RIGHT,
        ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L | ModifierFlag::COMMAND_L,
        KeyCode::TAB, ModifierFlag::CONTROL_L
      </autogen>
      <autogen>
        __KeyToKey__
        KeyCode::CURSOR_LEFT,
        ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L | ModifierFlag::COMMAND_L,
        KeyCode::TAB, ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L
      </autogen>
    </item>
    <item>
      <name>Hyper + Right/Left (Terminal)</name>
      <appendix>hyper+right/left to jump tabs</appendix>
      <identifier>hyper_tabs.terminal</identifier>
      <only>TERMINAL</only>
      <autogen>
        __KeyToKey__
        KeyCode::CURSOR_RIGHT,
        ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L | ModifierFlag::COMMAND_L,
        KeyCode::CURSOR_RIGHT, ModifierFlag::SHIFT_L | ModifierFlag::COMMAND_L
      </autogen>
      <autogen>
        __KeyToKey__
        KeyCode::CURSOR_LEFT,
        ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L | ModifierFlag::COMMAND_L,
        KeyCode::CURSOR_LEFT, ModifierFlag::SHIFT_L | ModifierFlag::COMMAND_L
      </autogen>
    </item>
    <item>
      <name>Hyper + Right/Left (Sublime)</name>
      <appendix>hyper+right/left to jump tabs</appendix>
      <identifier>hyper_tabs.sublime</identifier>
      <only>SUBLIMETEXT</only>
      <autogen>
        __KeyToKey__
        KeyCode::CURSOR_RIGHT,
        ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L | ModifierFlag::COMMAND_L,
        KeyCode::BRACKET_RIGHT, ModifierFlag::SHIFT_L | ModifierFlag::COMMAND_L
      </autogen>
      <autogen>
        __KeyToKey__
        KeyCode::CURSOR_LEFT,
        ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L | ModifierFlag::COMMAND_L,
        KeyCode::BRACKET_LEFT, ModifierFlag::SHIFT_L | ModifierFlag::COMMAND_L
      </autogen>
    </item>
    <!-- http://support.wasdkeyboards.com/customer/portal/articles/1925899-fixing-spotify-media-keys-issue-in-mac -->
    <item>
       <name>CMStorm Media Keys</name>
       <identifier>cm_media</identifier>
       <autogen>
         __KeyToKey__
        ConsumerKeyCode::RawValue::0x0012, ModifierFlag::NONE, ConsumerKeyCode::MUSIC_PREV
       </autogen>
       <autogen>
         __KeyToKey__
         ConsumerKeyCode::RawValue::0x0011, ModifierFlag::NONE, ConsumerKeyCode::MUSIC_NEXT
       </autogen>
     </item>
</root>

This is for Karabiner! It requires Seil to map Capslock to keycode 80. Then some magic with Alfred App makes sweet namespaced hotkeys.

Matt's: https://gist.github.com/mattdrose/414d4620afc919d6edc5