add caps word

keyboards/rkb1/config.h

@@ -23,6 +23,7 @@
 //#define SERIAL_USART_PIN_SWAP
 
 #define LEADER_NO_TIMEOUT
+#define DOUBLE_TAP_SHIFT_TURNS_ON_CAPS_WORD
 
 /*
  * Feature disable options

keyboards/rkb1/keymaps/simple/neo2.c

@@ -1,4 +1,5 @@
 #include "neo2.h"
+#include "action_util.h"
 #include "keycode.h"
 #include "quantum.h"
 
@@ -50,3 +51,29 @@ uint32_t keystroke_to_unicode(uint16_t keycode) {
     }
     return (uint32_t)keycode_to_char[keycode][getLayer()];
 }
+
+bool caps_word_press_user(uint16_t keycode) {
+    switch (keycode) {
+        // Keycodes that continue Caps Word, with shift applied.
+        case KC_A ... KC_Z:
+        case KC_MINS:
+            add_weak_mods(MOD_BIT(KC_LSFT));  // Apply shift to next key.
+            return true;
+
+        // Keycodes that continue Caps Word, without shifting.
+        case KC_1 ... KC_0:
+        case KC_BSPC:
+        case KC_DEL:
+        case KC_UNDS:
+        case KC_LSFT:
+        case KC_RSFT:
+        case KC_CAPS:
+        case KC_NUHS:
+        case KC_NUBS:
+        case KC_RALT:
+            return true;
+
+        default:
+            return getLayer() != 3;  // Deactivate Caps Word.
+    }
+}

keyboards/rkb1/rules.mk

@@ -17,3 +17,4 @@ CFLAGS += -Wl,--defsym=__unhandled_user_irq=_unhandled_exception
 SERIAL_DRIVER = vendor
 
 RAW_ENABLE = yes
+CAPS_WORD_ENABLE = yes