11 files changed, 264 insertions, 16 deletions

diff --git a/quantum/config_common.h b/quantum/config_common.h
index 4bdb2065d..28f68b9c7 100644
--- a/quantum/config_common.h
+++ b/quantum/config_common.h
@@ -2,8 +2,10 @@
 #define CONFIG_DEFINITIONS_H
 
 /* diode directions */
-#define COL2ROW 0
-#define ROW2COL 1
+#define COL2ROW       0
+#define ROW2COL       1
+#define CUSTOM_MATRIX 2 /* Disables built-in matrix scanning code */
+
 /* I/O pins */
 #ifndef F0
     #define B0 0x30
diff --git a/quantum/keymap_common.c b/quantum/keymap_common.c
index eced3d2bb..5190f24e8 100644
--- a/quantum/keymap_common.c
+++ b/quantum/keymap_common.c
@@ -80,7 +80,10 @@ action_t action_for_key(uint8_t layer, keypos_t key)
             action.code = keymap_function_id_to_action( (int)keycode & 0xFFF );
             break;
         case QK_MACRO ... QK_MACRO_MAX:
-            action.code = ACTION_MACRO(keycode & 0xFF);
+            if (keycode & 0x800) // tap macros have upper bit set
+                action.code = ACTION_MACRO_TAP(keycode & 0xFF);
+            else
+                action.code = ACTION_MACRO(keycode & 0xFF);
             break;
         case QK_LAYER_TAP ... QK_LAYER_TAP_MAX:
             action.code = ACTION_LAYER_TAP_KEY((keycode >> 0x8) & 0xF, keycode & 0xFF);
diff --git a/quantum/light_ws2812.c b/quantum/light_ws2812.c
index a883b1388..55bdd9cd8 100755
--- a/quantum/light_ws2812.c
+++ b/quantum/light_ws2812.c
@@ -70,7 +70,7 @@ void I2C_WriteBit(unsigned char c)
 
 // Inits bitbanging port, must be called before using the functions below
 //
-void I2C_Init()
+void I2C_Init(void)
 {
     I2C_PORT &= ~ ((1 << I2C_DAT) | (1 << I2C_CLK));
 
@@ -82,7 +82,7 @@ void I2C_Init()
 
 // Send a START Condition
 //
-void I2C_Start()
+void I2C_Start(void)
 {
     // set both to high at the same time
     I2C_DDR &= ~ ((1 << I2C_DAT) | (1 << I2C_CLK));
@@ -97,7 +97,7 @@ void I2C_Start()
 
 // Send a STOP Condition
 //
-void I2C_Stop()
+void I2C_Stop(void)
 {
     I2C_CLOCK_HI();
     _delay_us(I2C_DELAY);
diff --git a/quantum/matrix.c b/quantum/matrix.c
index 07eb87bc3..ac523482a 100644
--- a/quantum/matrix.c
+++ b/quantum/matrix.c
@@ -60,13 +60,14 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     extern const matrix_row_t matrix_mask[];
 #endif
 
+#if (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
 static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
 static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+#endif
 
 /* matrix state(1:on, 0:off) */
 static matrix_row_t matrix[MATRIX_ROWS];
 
-static matrix_row_t matrix_raw[MATRIX_ROWS];
 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
 
 
@@ -76,7 +77,7 @@ static matrix_row_t matrix_debouncing[MATRIX_ROWS];
     static void unselect_rows(void);
     static void select_row(uint8_t row);
     static void unselect_row(uint8_t row);
-#else // ROW2COL
+#elif (DIODE_DIRECTION == ROW2COL)
     static void init_rows(void);
     static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
     static void unselect_cols(void);
@@ -133,7 +134,7 @@ uint8_t matrix_cols(void) {
 //         /* PORTxn */
 //         _SFR_IO8((col_pins[c] >> 4) + 2) |= _BV(col_pins[c] & 0xF);
 //     }
-// #else
+// #elif (DIODE_DIRECTION == ROW2COL)
 //     for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
 //         /* DDRxn */
 //         _SFR_IO8((col_pins[c] >> 4) + 1) |= _BV(col_pins[c] & 0xF);
@@ -158,7 +159,7 @@ void matrix_init(void) {
 #if (DIODE_DIRECTION == COL2ROW)
     unselect_rows();
     init_cols();
-#else // ROW2COL
+#elif (DIODE_DIRECTION == ROW2COL)
     unselect_cols();
     init_rows();
 #endif
@@ -166,7 +167,6 @@ void matrix_init(void) {
     // initialize matrix state: all keys off
     for (uint8_t i=0; i < MATRIX_ROWS; i++) {
         matrix[i] = 0;
-        matrix_raw[i] = 0;
         matrix_debouncing[i] = 0;
     }
 
@@ -194,7 +194,7 @@ uint8_t matrix_scan(void)
 
     }
 
-#else // ROW2COL
+#elif (DIODE_DIRECTION == ROW2COL)
 
     // Set col, read rows
     for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
@@ -336,7 +336,7 @@ static void unselect_rows(void)
     }
 }
 
-#else // ROW2COL
+#elif (DIODE_DIRECTION == ROW2COL)
 
 static void init_rows(void)
 {
diff --git a/quantum/process_keycode/process_combo.c b/quantum/process_keycode/process_combo.c
new file mode 100644
index 000000000..e2189ad98
--- /dev/null
+++ b/quantum/process_keycode/process_combo.c
@@ -0,0 +1,134 @@
+#include "process_combo.h"
+#include "print.h"
+
+
+#define COMBO_TIMER_ELAPSED -1
+
+
+__attribute__ ((weak))
+combo_t key_combos[] = {
+
+};
+
+__attribute__ ((weak))
+void process_combo_event(uint8_t combo_index, bool pressed) {
+
+}
+
+static uint8_t current_combo_index = 0;
+
+static inline void send_combo(uint16_t action, bool pressed)
+{
+    if (action) {
+        if (pressed) {
+            register_code16(action);
+        } else {
+            unregister_code16(action);
+        }
+    } else {
+        process_combo_event(current_combo_index, pressed);
+    }
+}
+
+#define ALL_COMBO_KEYS_ARE_DOWN     (((1<<count)-1) == combo->state)
+#define NO_COMBO_KEYS_ARE_DOWN      (0 == combo->state)
+#define KEY_STATE_DOWN(key)         do{ combo->state |= (1<<key); } while(0)
+#define KEY_STATE_UP(key)           do{ combo->state &= ~(1<<key); } while(0)
+static bool process_single_combo(combo_t *combo, uint16_t keycode, keyrecord_t *record) 
+{
+    uint8_t count = 0;
+    uint8_t index = -1;
+    /* Find index of keycode and number of combo keys */
+    for (const uint16_t *keys = combo->keys; ;++count) {
+        uint16_t key = pgm_read_word(&keys[count]);
+        if (keycode == key) index = count;
+        if (COMBO_END == key) break;
+    }
+
+    /* Return if not a combo key */
+    if (-1 == (int8_t)index) return false;
+
+    /* The combos timer is used to signal whether the combo is active */
+    bool is_combo_active = COMBO_TIMER_ELAPSED == combo->timer ? false : true;
+
+    if (record->event.pressed) {
+        KEY_STATE_DOWN(index);
+
+        if (is_combo_active) {
+            if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was pressed */
+                send_combo(combo->keycode, true);
+                combo->timer = COMBO_TIMER_ELAPSED;
+            } else { /* Combo key was pressed */
+                combo->timer = timer_read();
+#ifdef COMBO_ALLOW_ACTION_KEYS
+                combo->prev_record = *record;
+#else
+                combo->prev_key = keycode;
+#endif
+            }
+        }
+    } else {
+        if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was released */
+            send_combo(combo->keycode, false);
+        }
+
+        if (is_combo_active) { /* Combo key was tapped */
+#ifdef COMBO_ALLOW_ACTION_KEYS
+            record->event.pressed = true;
+            process_action(record, store_or_get_action(record->event.pressed, record->event.key));
+            record->event.pressed = false;
+            process_action(record, store_or_get_action(record->event.pressed, record->event.key));
+#else
+            register_code16(keycode);
+            send_keyboard_report();
+            unregister_code16(keycode);
+#endif
+            combo->timer = 0;            
+        }
+
+        KEY_STATE_UP(index);        
+    }
+
+    if (NO_COMBO_KEYS_ARE_DOWN) {
+        combo->timer = 0;
+    }
+
+    return is_combo_active;
+}
+
+bool process_combo(uint16_t keycode, keyrecord_t *record)
+{
+    bool is_combo_key = false;
+
+    for (current_combo_index = 0; current_combo_index < COMBO_COUNT; ++current_combo_index) {
+        combo_t *combo = &key_combos[current_combo_index];
+        is_combo_key |= process_single_combo(combo, keycode, record);
+    }    
+
+    return !is_combo_key;
+}
+
+void matrix_scan_combo(void)
+{
+    for (int i = 0; i < COMBO_COUNT; ++i) {
+        combo_t *combo = &key_combos[i];
+        if (combo->timer && 
+            combo->timer != COMBO_TIMER_ELAPSED && 
+            timer_elapsed(combo->timer) > COMBO_TERM) {
+            
+            /* This disables the combo, meaning key events for this
+             * combo will be handled by the next processors in the chain 
+             */
+            combo->timer = COMBO_TIMER_ELAPSED;
+
+#ifdef COMBO_ALLOW_ACTION_KEYS
+            process_action(&combo->prev_record, 
+                store_or_get_action(combo->prev_record.event.pressed, 
+                                    combo->prev_record.event.key));
+#else
+            unregister_code16(combo->prev_key);
+            register_code16(combo->prev_key);
+#endif
+        }
+    }
+}
diff --git a/quantum/process_keycode/process_combo.h b/quantum/process_keycode/process_combo.h
new file mode 100644
index 000000000..847f2b737
--- /dev/null
+++ b/quantum/process_keycode/process_combo.h
@@ -0,0 +1,43 @@
+#ifndef PROCESS_COMBO_H
+#define PROCESS_COMBO_H
+
+#include <stdint.h>
+#include "progmem.h"
+#include "quantum.h"
+
+typedef struct
+{
+    const uint16_t *keys;
+    uint16_t keycode;        
+#ifdef EXTRA_EXTRA_LONG_COMBOS
+    uint32_t state;
+#elif EXTRA_LONG_COMBOS
+    uint16_t state;
+#else
+    uint8_t state;
+#endif
+    uint16_t timer;
+#ifdef COMBO_ALLOW_ACTION_KEYS
+    keyrecord_t prev_record;
+#else
+    uint16_t prev_key;
+#endif
+} combo_t;
+
+
+#define COMBO(ck, ca)       {.keys = &(ck)[0], .keycode = (ca)}
+#define COMBO_ACTION(ck)    {.keys = &(ck)[0]}
+
+#define COMBO_END 0
+#ifndef COMBO_COUNT
+#define COMBO_COUNT 0
+#endif
+#ifndef COMBO_TERM
+#define COMBO_TERM TAPPING_TERM
+#endif
+
+bool process_combo(uint16_t keycode, keyrecord_t *record);
+void matrix_scan_combo(void);
+void process_combo_event(uint8_t combo_index, bool pressed);
+
+#endif
diff --git a/quantum/process_keycode/process_unicode.c b/quantum/process_keycode/process_unicode.c
index a30e93ae3..9995ba9bd 100644
--- a/quantum/process_keycode/process_unicode.c
+++ b/quantum/process_keycode/process_unicode.c
@@ -141,7 +141,16 @@ bool process_unicode_map(uint16_t keycode, keyrecord_t *record) {
     const uint32_t* map = unicode_map;
     uint16_t index = keycode & 0x7FF;
     uint32_t code = pgm_read_dword_far(&map[index]);
-    if ((code > 0xFFFF && input_mode == UC_OSX) || (code > 0xFFFFF && input_mode == UC_LNX)) {
+    if (code > 0xFFFF && code <= 0x10ffff && input_mode == UC_OSX) {
+      // Convert to UTF-16 surrogate pair
+      code -= 0x10000;
+      uint32_t lo = code & 0x3ff;
+      uint32_t hi = (code & 0xffc00) >> 10;
+      unicode_input_start();
+      register_hex32(hi + 0xd800);
+      register_hex32(lo + 0xdc00);
+      unicode_input_finish();
+    } else if ((code > 0x10ffff && input_mode == UC_OSX) || (code > 0xFFFFF && input_mode == UC_LNX)) {
       // when character is out of range supported by the OS
       unicode_map_input_error();
     } else {
diff --git a/quantum/quantum.c b/quantum/quantum.c
index 0aecd238e..d3905decf 100644
--- a/quantum/quantum.c
+++ b/quantum/quantum.c
@@ -1,4 +1,7 @@
 #include "quantum.h"
+#ifdef PROTOCOL_LUFA
+#include "outputselect.h"
+#endif
 
 #ifndef TAPPING_TERM
 #define TAPPING_TERM 200
@@ -158,6 +161,9 @@ bool process_record_quantum(keyrecord_t *record) {
   #ifndef DISABLE_CHORDING
     process_chording(keycode, record) &&
   #endif
+  #ifdef COMBO_ENABLE
+    process_combo(keycode, record) &&
+  #endif
   #ifdef UNICODE_ENABLE
     process_unicode(keycode, record) &&
   #endif
@@ -240,6 +246,36 @@ bool process_record_quantum(keyrecord_t *record) {
           return false;
       break;
         #endif
+    #ifdef PROTOCOL_LUFA
+    case OUT_AUTO:
+      if (record->event.pressed) {
+        set_output(OUTPUT_AUTO);
+      }
+      return false;
+      break;
+    case OUT_USB:
+      if (record->event.pressed) {
+        set_output(OUTPUT_USB);
+      }
+      return false;
+      break;
+    #ifdef BLUETOOTH_ENABLE
+    case OUT_BT:
+      if (record->event.pressed) {
+        set_output(OUTPUT_BLUETOOTH);
+      }
+      return false;
+      break;
+    #endif
+    #ifdef ADAFRUIT_BLE_ENABLE
+    case OUT_BLE:
+      if (record->event.pressed) {
+        set_output(OUTPUT_ADAFRUIT_BLE);
+      }
+      return false;
+      break;
+    #endif
+    #endif
     case MAGIC_SWAP_CONTROL_CAPSLOCK ... MAGIC_TOGGLE_NKRO:
       if (record->event.pressed) {
         // MAGIC actions (BOOTMAGIC without the boot)
@@ -536,6 +572,11 @@ void matrix_scan_quantum() {
   #ifdef TAP_DANCE_ENABLE
     matrix_scan_tap_dance();
   #endif
+
+  #ifdef COMBO_ENABLE
+    matrix_scan_combo();
+  #endif
+
   matrix_scan_kb();
 }
 
diff --git a/quantum/quantum.h b/quantum/quantum.h
index e6adf974a..18f072189 100644
--- a/quantum/quantum.h
+++ b/quantum/quantum.h
@@ -15,7 +15,6 @@
 #ifdef RGBLIGHT_ENABLE
   #include "rgblight.h"
 #endif
-
 #include "action_layer.h"
 #include "eeconfig.h"
 #include <stddef.h>
@@ -63,6 +62,10 @@ extern uint32_t default_layer_state;
         #include "process_printer.h"
 #endif
 
+#ifdef COMBO_ENABLE
+        #include "process_combo.h"
+#endif
+
 #define SEND_STRING(str) send_string(PSTR(str))
 void send_string(const char *str);
 
diff --git a/quantum/quantum_keycodes.h b/quantum/quantum_keycodes.h
index 4853655f9..8a78a58c9 100644
--- a/quantum/quantum_keycodes.h
+++ b/quantum/quantum_keycodes.h
@@ -141,6 +141,16 @@ enum quantum_keycodes {
     PRINT_ON,
     PRINT_OFF,
 
+    // output selection
+    OUT_AUTO,
+    OUT_USB,
+#ifdef BLUETOOTH_ENABLE
+    OUT_BT,
+#endif
+#ifdef ADAFRUIT_BLE_ENABLE
+    OUT_BLE,
+#endif
+
     // always leave at the end
     SAFE_RANGE
 };
@@ -246,8 +256,10 @@ enum quantum_keycodes {
 
 #define M(kc) (kc | QK_MACRO)
 
+#define MACROTAP(kc) (kc | QK_MACRO | FUNC_TAP<<8)
 #define MACRODOWN(...) (record->event.pressed ? MACRO(__VA_ARGS__) : MACRO_NONE)
 
+
 // L-ayer, T-ap - 256 keycode max, 16 layer max
 #define LT(layer, kc) (kc | QK_LAYER_TAP | ((layer & 0xF) << 8))
 
@@ -290,6 +302,7 @@ enum quantum_keycodes {
 #define CTL_T(kc) MT(MOD_LCTL, kc)
 #define SFT_T(kc) MT(MOD_LSFT, kc)
 #define ALT_T(kc) MT(MOD_LALT, kc)
+#define ALGR_T(kc) MT(MOD_RALT, kc) // dual-function AltGR
 #define GUI_T(kc) MT(MOD_LGUI, kc)
 #define C_S_T(kc) MT((MOD_LCTL | MOD_LSFT), kc) // Control + Shift e.g. for gnome-terminal
 #define MEH_T(kc) MT((MOD_LCTL | MOD_LSFT | MOD_LALT), kc) // Meh is a less hyper version of the Hyper key -- doesn't include Win or Cmd, so just alt+shift+ctrl
diff --git a/quantum/template/config.h b/quantum/template/config.h
index b02f0c7eb..c61c4a618 100644
--- a/quantum/template/config.h
+++ b/quantum/template/config.h
@@ -46,7 +46,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_COL_PINS { F1, F0, B0 }
 #define UNUSED_PINS
 
-/* COL2ROW or ROW2COL */
+/* COL2ROW, ROW2COL, or CUSTOM_MATRIX */
 #define DIODE_DIRECTION COL2ROW
  
 // #define BACKLIGHT_PIN B7