Karabiner private.xml: arrow symbol shortcuts

karabiner_arrow_symbol_shortcuts.xml

<!-- https://pqrs.org/osx/karabiner/faq.html.en#unicode-hex-input -->
<?xml version="1.0"?>
<root>
  <item>
    <name>Use right option as unicode hex input modifier</name>
    <appendix>- right option + ← = ← (U+2190)</appendix>
    <appendix>- right option + ↑ = ↑ (U+2191)</appendix>
    <appendix>- right option + → = → (U+2192)</appendix>
    <appendix>- right option + ↓ = ↓ (U+2193)</appendix>
    <identifier>private.unicode_hex_input_modifier</identifier>
    <autogen>
      __KeyToKey__
      KeyCode::OPTION_R,
      KeyCode::VK_CONFIG_SYNC_KEYDOWNUP_notsave_private_unicode_hex_input_modifier_flag,

      Option::KEYTOKEY_BEFORE_KEYDOWN,
      <!-- change input source to Unicode Hex Input -->
      KeyCode::VK_CHANGE_INPUTSOURCE_UNICODEHEXINPUT,
      <!-- wait until input source will be changed -->
      KeyCode::VK_WAIT_100MS,

      Option::KEYTOKEY_AFTER_KEYUP,
      <!-- change input source to U.S. -->
      KeyCode::VK_CHANGE_INPUTSOURCE_US,
    </autogen>

    <block>
      <config_only>notsave.private_unicode_hex_input_modifier_flag</config_only>
      <autogen>
        <!-- right option + ← = ← (U+2190) -->
        __KeyToKey__
        KeyCode::CURSOR_LEFT,
        KeyCode::KEY_2, ModifierFlag::OPTION_L,
        KeyCode::KEY_1, ModifierFlag::OPTION_L,
        KeyCode::KEY_9, ModifierFlag::OPTION_L,
        KeyCode::KEY_0, ModifierFlag::OPTION_L,
      </autogen>

      <autogen>
        <!-- right option + ↑ = ↑ (U+2191) -->
        __KeyToKey__
        KeyCode::CURSOR_UP,
        KeyCode::KEY_2, ModifierFlag::OPTION_L,
        KeyCode::KEY_1, ModifierFlag::OPTION_L,
        KeyCode::KEY_9, ModifierFlag::OPTION_L,
        KeyCode::KEY_1, ModifierFlag::OPTION_L,
      </autogen>

      <autogen>
        <!-- right option + → = → (U+2192) -->
        __KeyToKey__
        KeyCode::CURSOR_RIGHT,
        KeyCode::KEY_2, ModifierFlag::OPTION_L,
        KeyCode::KEY_1, ModifierFlag::OPTION_L,
        KeyCode::KEY_9, ModifierFlag::OPTION_L,
        KeyCode::KEY_2, ModifierFlag::OPTION_L,
      </autogen>

      <autogen>
        <!-- right option + ↓ = ↓ (U+2193) -->
        __KeyToKey__
        KeyCode::CURSOR_DOWN,
        KeyCode::KEY_2, ModifierFlag::OPTION_L,
        KeyCode::KEY_1, ModifierFlag::OPTION_L,
        KeyCode::KEY_9, ModifierFlag::OPTION_L,
        KeyCode::KEY_3, ModifierFlag::OPTION_L,
      </autogen>
    </block>
  </item>

  <item hidden="true">
    <identifier vk_config="true">notsave.private_unicode_hex_input_modifier_flag</identifier>
  </item>
</root>