deskthority

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static void layer_switch_on(uint8_t code)
{
    if (!IS_FN(code)) return;
    fn_state_bits |= FN_BIT(code);
#ifdef FN_BITFIELD
    uint8_t new_layer = keymap_fn_layer(fn_state_bits & 7);
#else
    uint8_t new_layer = (fn_state_bits ? keymap_fn_layer(biton(fn_state_bits)) : default_layer);
#endif
    if (current_layer != new_layer) {
        Kdebug("Layer Switch(on): "); Kdebug_hex(current_layer);
        Kdebug(" -> "); Kdebug_hex(new_layer); Kdebug("\n");

        clear_keyboard_but_mods();
        current_layer = new_layer;
    }
}

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state: IDLE kind: 01 code: E9d    <-- Fn1 is mapped to the HHKB Fn key
Layer Switch(on): 00 -> 01        <-- Fn1 switches to layer 1
state: IDLE kind: 02 code: E9u
Layer Switch(off): 01 -> 00
FAIL SAFE: clear all keys(default layer).
state: IDLE kind: 03 code: ECd    <-- Fn4 is mapped to the P key
NEXT: IDLE -> DELAYING
Layer Switch(on): 00 -> 04        <-- Fn4 switches to layer 4
NEXT: DELAYING -> IDLE
state: IDLE kind: 06 code: 14u
FAIL SAFE: clear all keys(default layer).
state: IDLE kind: 01 code: E9d    <-- Pressing Fn1 again
Layer Switch(on): 00 -> 04        <-- Fn1 now switches to layer 4!!
state: IDLE kind: 00 code: 00u
FAIL SAFE: clear all keys(default layer).

Code: Select all

diff --git a/common/keyboard.c b/common/keyboard.c
index cd1ceb4..e94ebb5 100644
--- a/common/keyboard.c
+++ b/common/keyboard.c
@@ -619,6 +619,10 @@ void keyboard_task(void)
             Kdebug("FAIL SAFE: clear all keys(default layer).\n");
             clear_keyboard();
             current_layer = default_layer;
+            fn_state_bits = 0;
+            delayed_fn = (keyrecord_t){};
+            waiting_key = (keyrecord_t){};
+            NEXT(IDLE);
         }
     }

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      <item>
        <name>Shifts to Parentheses</name>
        <appendix>Shifts, when pressed alone, type parentheses.</appendix>
        <appendix>When used with other keys they're normal shifts.</appendix>
        <identifier>space_cadet.shifts_to_parens</identifier>
        <!-- This is the basic mapping. -->
        <autogen>--KeyOverlaidModifier-- KeyCode::SHIFT_R, ModifierFlag::SHIFT_R | ModifierFlag::NONE, KeyCode::SHIFT_R, KeyCode::KEY_0, ModifierFlag::SHIFT_L</autogen>
        <autogen>--KeyOverlaidModifier-- KeyCode::SHIFT_L, ModifierFlag::SHIFT_L | ModifierFlag::NONE, KeyCode::SHIFT_L, KeyCode::KEY_9, ModifierFlag::SHIFT_R</autogen>
        <!--
                    Remap the "rolls" of () and )( because it's too easy to hit one
                    before finishing the other, and there's no other reason to be
                    pressing both shift keys at once anyway
                -->
        <autogen>--KeyToKey-- KeyCode::SHIFT_L, ModifierFlag::SHIFT_R, KeyCode::KEY_0, ModifierFlag::SHIFT_L, KeyCode::KEY_9, ModifierFlag::SHIFT_L</autogen>
        <autogen>--KeyToKey-- KeyCode::SHIFT_R, ModifierFlag::SHIFT_L, KeyCode::KEY_9, ModifierFlag::SHIFT_L, KeyCode::KEY_0, ModifierFlag::SHIFT_L</autogen>
        <!--
                    Remap Rshift+Space to ') ', because when typing an end paren and
                    then a space I tend to hit space before I let go of rshift.
                -->
        <autogen>--KeyToKey-- KeyCode::SPACE, ModifierFlag::SHIFT_R, KeyCode::KEY_0, ModifierFlag::SHIFT_L, KeyCode::SPACE</autogen>
      </item>

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      <item>
        <name>Remap Right Option to Hyper</name>
        <appendix>OS X doesn't have a Hyper. This maps Right Option to Control + Shift + Option + Command.</appendix>
        <identifier>space_cadet.right_option_to_hyper</identifier>
        <autogen>--KeyToKey-- KeyCode::F19, KeyCode::COMMAND_L, ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L</autogen>
      </item>