Karabiner Slack Customisation

private.xml

<?xml version="1.0"?>
<root>

  <appdef>
    <appname>SLACK</appname>
    <equal>com.tinyspeck.slackmacgap</equal>
  </appdef>

  <item>
    <name>Slack Customisation</name>
    <item>
      <name>Map Cmd+J to Next Unread</name>
      <identifier>remap.app_slack_next_unread</identifier>
      <only>SLACK</only>
      <autogen>__KeyToKey__ KeyCode::J, MODIFIERFLAG_EITHER_LEFT_OR_RIGHT_COMMAND, KeyCode::CURSOR_DOWN, ModifierFlag::OPTION_L, ModifierFlag::SHIFT_L</autogen>
    </item>
  </item>

</root>

June 26, 2015 10:25 am — Made the shortcut work with either Command key