use thumb cluster key to toggle brackets layer

keyboards/ergodox/keymaps/dvorak_programmer/README.md

@@ -12,6 +12,7 @@ Layers
 * KEY_SEL: same as above, but every movement shift-selects.
 * NUMBER: keypad layer.
 * SYMBOL: all the symbols as well as brackets at the bottom.
+* BRACKET: special brackets-only layer for programming
 * SHORTCUTS: sends Hyper keys for Autohotkey to interpret. I use this to switch between specific apps.
 * MOUSE: use mouse keys
 

keyboards/ergodox/keymaps/dvorak_programmer/keymap.c

@@ -58,12 +58,12 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 [BASE] = KEYMAP(  // layer 0 : default
         // left hand
         KC_ESC,                    KC_F1,          KC_F2,       KC_F3,        KC_F4,       KC_F5,       KC_F6,
-        LT(BRACKETS,KC_TAB),       KC_QUOT,        KC_COMM,     KC_DOT,       KC_P,        KC_Y,        MO(KEY_SEL),
+        LT(MOUSE,KC_TAB),       KC_QUOT,        KC_COMM,     KC_DOT,       KC_P,        KC_Y,        MO(KEY_SEL),
         MO(SHELL_NAV),             KC_A,           KC_O,        KC_E,         KC_U,        KC_I,
         KC_FN3,                    KC_SCLN,        KC_Q,        KC_J,         KC_K,        KC_X,        MO(KEY_NAV),
                    OSL(SHORTCUTS),KC_FN4, KC_FN5,OSL(SYMBOL),MO(NUMBER),  
                                               // thumb cluster
-                                               MO(MOUSE), RCTL(KC_S),
+                                               MO(BRACKETS), RCTL(KC_S),
                                                                       RCTL(KC_DEL),
                                                KC_BSPC,RCTL(KC_BSPC),KC_DEL,
         // right hand