diff --git a/keyboards/9key/keymaps/bcat/keymap.c b/keyboards/9key/keymaps/bcat/keymap.c
index 5c30d6308d..5c08a42a56 100644
--- a/keyboards/9key/keymaps/bcat/keymap.c
+++ b/keyboards/9key/keymaps/bcat/keymap.c
@@ -1,3 +1,19 @@
+/* Copyright 2021 Jonathan Rascher
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include QMK_KEYBOARD_H
 
 enum layer {
@@ -6,18 +22,19 @@ enum layer {
 };
 
 #define LY_FUNC MO(LAYER_FUNCTION)
-#define KY_LOCK LCA(KC_L)  /* Cinnamon lock screen */
+#define KY_LOCK LCA(KC_L) /* Cinnamon lock screen */
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    // clang-format off
     [LAYER_DEFAULT] = LAYOUT(
         KC_MPLY,  KC_VOLU,  KC_MSTP,
         KC_MPRV,  KC_VOLD,  KC_MNXT,
         KY_LOCK,  KC_MUTE,  LY_FUNC
     ),
-
     [LAYER_FUNCTION] = LAYOUT(
         EEP_RST,  _______,  RESET,
         _______,  _______,  _______,
         _______,  _______,  _______
     ),
+    // clang-format on
 };
diff --git a/keyboards/eco/keymaps/bcat/keymap.c b/keyboards/eco/keymaps/bcat/keymap.c
index 066acbe649..d46a7d416b 100644
--- a/keyboards/eco/keymaps/bcat/keymap.c
+++ b/keyboards/eco/keymaps/bcat/keymap.c
@@ -34,6 +34,7 @@ enum layer {
 #define KY_ZMRST LCTL(KC_0)
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    // clang-format off
     /* Default layer: http://www.keyboard-layout-editor.com/#/gists/2c11371c7a5f7cd08a0132631d3d3281 */
     [LAYER_DEFAULT] = LAYOUT(
         KC_TAB,   KC_Q,     KC_W,     KC_E,     KC_R,     KC_T,     KC_LBRC,  KC_RBRC,  KC_Y,     KC_U,     KC_I,     KC_O,     KC_P,     KC_BSPC,
@@ -41,7 +42,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         KC_LSFT,  KC_Z,     KC_X,     KC_C,     KC_V,     KC_B,     KC_END,   KC_PGDN,  KC_N,     KC_M,     KC_COMM,  KC_DOT,   KC_SLSH,  KC_RSFT,
         XXXXXXX,  XXXXXXX,  KC_LALT,  KC_LCTL,  LY_LWR,   KC_SPC,   XXXXXXX,  XXXXXXX,  KC_ENT,   LY_RSE,   KC_RALT,  KC_RGUI,  XXXXXXX,  XXXXXXX
     ),
-
     /* Lower layer: http://www.keyboard-layout-editor.com/#/gists/11256970dc0552886a82382ee02fa415 */
     [LAYER_LOWER] = LAYOUT(
         MC_ALTT,  KC_EXLM,  KC_AT,    KC_HASH,  KC_DLR,   KC_PERC,  _______,  _______,  KC_CIRC,  KC_AMPR,  KC_ASTR,  KC_LPRN,  KC_RPRN,  _______,
@@ -49,7 +49,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  KC_APP,   KC_PSCR,  KC_SLCK,  KC_PAUS,  KC_LGUI,  _______,  _______,  KC_BSLS,  KC_MINS,  KC_EQL,   KC_LBRC,  KC_RBRC,  KC_GRV,
         _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______
     ),
-
     /* Raise layer: http://www.keyboard-layout-editor.com/#/gists/308a8be75e0b85902dc18db1b2546862 */
     [LAYER_RAISE] = LAYOUT(
         KC_CAPS,  KC_1,     KC_2,     KC_3,     KC_4,     KC_5,     _______,  _______,  KC_6,     KC_7,     KC_8,     KC_9,     KC_0,     _______,
@@ -57,7 +56,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  KC_F6,    KC_F7,    KC_F8,    KC_F9,    KC_F10,   _______,  _______,  KC_HOME,  KC_PGDN,  KC_PGUP,  KC_END,   KC_F12,   KC_INS,
         _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______
     ),
-
     /* Adjust layer: http://www.keyboard-layout-editor.com/#/gists/b18aafa0327d7e83eaf485546c067a21 */
     [LAYER_ADJUST] = LAYOUT(
         _______,  NK_TOGG,  KC_MPLY,  KC_VOLU,  KC_MSTP,  _______,  _______,  _______,  EEP_RST,  RESET,    _______,  _______,  _______,  _______,
@@ -65,8 +63,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  _______,  _______,  KC_MUTE,  _______,  _______,  _______,  _______,  RGB_HUI,  RGB_SAD,  RGB_SAI,  RGB_HUD,  RGB_SPD,  _______,
         _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  RGB_TOG,  _______,  _______,  _______,  _______,  _______
     ),
+    // clang-format on
 };
 
-layer_state_t layer_state_set_keymap(layer_state_t state) {
-    return update_tri_layer_state(state, LAYER_LOWER, LAYER_RAISE, LAYER_ADJUST);
-}
+layer_state_t layer_state_set_keymap(layer_state_t state) { return update_tri_layer_state(state, LAYER_LOWER, LAYER_RAISE, LAYER_ADJUST); }
diff --git a/keyboards/keebio/bdn9/keymaps/bcat/keymap.c b/keyboards/keebio/bdn9/keymaps/bcat/keymap.c
index 06ba9a5595..c64f702b20 100644
--- a/keyboards/keebio/bdn9/keymaps/bcat/keymap.c
+++ b/keyboards/keebio/bdn9/keymaps/bcat/keymap.c
@@ -1,3 +1,19 @@
+/* Copyright 2021 Jonathan Rascher
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include QMK_KEYBOARD_H
 
 enum layer {
@@ -8,17 +24,18 @@ enum layer {
 #define LY_SECND MO(LAYER_SECOND)
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    // clang-format off
     [LAYER_FIRST] = LAYOUT(
         KC_MUTE,  LY_SECND, BL_BRTG,
         KC_F4,    KC_F5,    KC_F6,
         KC_F1,    KC_F2,    KC_F3
     ),
-
     [LAYER_SECOND] = LAYOUT(
         EEP_RST,  _______,  RESET,
         KC_F10,   KC_F11,   KC_F12,
         KC_F7,    KC_F8,    KC_F9
     ),
+    // clang-format on
 };
 
 bool encoder_update_user(uint8_t index, bool clockwise) {
@@ -26,20 +43,17 @@ bool encoder_update_user(uint8_t index, bool clockwise) {
         /* Top-left encoder (volume) */
         case 0:
             tap_code(clockwise ? KC_VOLU : KC_VOLD);
-            break;
-
+            return false;
         /* Top-right encoder (backlight brightness) */
         case 1:
+#if defined(BACKLIGHT_ENABLE)
             if (clockwise) {
-#ifdef BACKLIGHT_ENABLE
                 backlight_increase();
-#endif
             } else {
-#ifdef BACKLIGHT_ENABLE
                 backlight_decrease();
-#endif
             }
-            break;
+#endif
+            return false;
     }
     return true;
 }
diff --git a/keyboards/keebio/quefrency/keymaps/bcat/config.h b/keyboards/keebio/quefrency/keymaps/bcat/config.h
index 34387f2dd0..69771d36ba 100644
--- a/keyboards/keebio/quefrency/keymaps/bcat/config.h
+++ b/keyboards/keebio/quefrency/keymaps/bcat/config.h
@@ -1,10 +1,25 @@
+/* Copyright 2021 Jonathan Rascher
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #pragma once
 
-/*
- * Quefrency lacks I2C resistors on the right PCB, so the right half doesn't
+/* Quefrency lacks I2C resistors on the right PCB, so the right half doesn't
  * work independently. (Presumably the floating I2C lines cause a problem.)
- * Using serial seems sufficiently fast in practice and allows both halves to
- * be used independently.
+ * Using serial seems sufficiently fast in practice and allows both halves to be
+ * used independently.
  */
 #define USE_SERIAL
 
@@ -14,4 +29,5 @@
 
 /* Set up RGB lighting so it works with either side as master. */
 #undef RGBLED_SPLIT
-#define RGBLED_SPLIT { 8, 9 }
+#define RGBLED_SPLIT \
+    { 8, 9 }
diff --git a/keyboards/keebio/quefrency/keymaps/bcat/keymap.c b/keyboards/keebio/quefrency/keymaps/bcat/keymap.c
index e73022d9b6..d28a5083ac 100644
--- a/keyboards/keebio/quefrency/keymaps/bcat/keymap.c
+++ b/keyboards/keebio/quefrency/keymaps/bcat/keymap.c
@@ -1,3 +1,19 @@
+/* Copyright 2021 Jonathan Rascher
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include QMK_KEYBOARD_H
 
 enum layer {
@@ -8,6 +24,7 @@ enum layer {
 #define LY_FN MO(LAYER_FUNCTION)
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    // clang-format off
     /* Default layer: http://www.keyboard-layout-editor.com/#/gists/60a262432bb340b37d364a4424f3037b */
     [LAYER_DEFAULT] = LAYOUT_65(
         KC_ESC,   KC_1,     KC_2,     KC_3,     KC_4,     KC_5,     KC_6,     KC_7,     KC_8,     KC_9,     KC_0,     KC_MINS,  KC_EQL,   KC_BSLS,  KC_GRV,   KC_HOME,
@@ -16,7 +33,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         KC_LSFT,  KC_Z,     KC_X,     KC_C,     KC_V,     KC_B,     KC_N,     KC_M,     KC_COMM,  KC_DOT,   KC_SLSH,  KC_RSFT,                      KC_UP,    KC_END,
         KC_LCTL,  KC_LGUI,  KC_LALT,  LY_FN,    KC_SPC,                       KC_SPC,   XXXXXXX,  KC_RALT,  LY_FN,    KC_RCTL,            KC_LEFT,  KC_DOWN,  KC_RGHT
     ),
-
     /* Function layer: http://www.keyboard-layout-editor.com/#/gists/59636898946da51f91fb290f8e078b4d */
     [LAYER_FUNCTION] = LAYOUT_65(
         _______,  KC_F1,    KC_F2,    KC_F3,    KC_F4,    KC_F5,    KC_F6,    KC_F7,    KC_F8,    KC_F9,    KC_F10,   KC_F11,   KC_F12,   KC_INS,   KC_DEL,   RGB_HUI,
@@ -25,4 +41,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  KC_APP,   _______,  KC_MUTE,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,                      RGB_VAI,  RGB_HUD,
         _______,  _______,  _______,  _______,  _______,                      _______,  _______,  _______,  _______,  _______,            RGB_RMOD, RGB_VAD,  RGB_MOD
     ),
+    // clang-format on
 };
diff --git a/keyboards/lily58/keymaps/bcat/config.h b/keyboards/lily58/keymaps/bcat/config.h
index 1809262044..dbe724d56b 100644
--- a/keyboards/lily58/keymaps/bcat/config.h
+++ b/keyboards/lily58/keymaps/bcat/config.h
@@ -1,3 +1,19 @@
+/* Copyright 2021 Jonathan Rascher
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #pragma once
 
 #define EE_HANDS
diff --git a/keyboards/lily58/keymaps/bcat/keymap.c b/keyboards/lily58/keymaps/bcat/keymap.c
index 549363d03a..69af2ca003 100644
--- a/keyboards/lily58/keymaps/bcat/keymap.c
+++ b/keyboards/lily58/keymaps/bcat/keymap.c
@@ -34,6 +34,7 @@ enum layer {
 #define KY_ZMRST LCTL(KC_0)
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    // clang-format off
     /* Default layer: http://www.keyboard-layout-editor.com/#/gists/e0eb3af65961e9fd612dcff3ddd88e4f */
     [LAYER_DEFAULT] = LAYOUT(
         KC_EQL,   KC_1,     KC_2,     KC_3,     KC_4,     KC_5,                         KC_6,     KC_7,     KC_8,     KC_9,     KC_0,     KC_MINS,
@@ -42,7 +43,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         KC_LSFT,  KC_Z,     KC_X,     KC_C,     KC_V,     KC_B,     KC_WBAK,  KC_WFWD,  KC_N,     KC_M,     KC_COMM,  KC_DOT,   KC_SLSH,  KC_RSFT,
                                       KC_LALT,  KC_LCTL,  LY_LWR,   KC_SPC,   KC_ENT,   LY_RSE,   KC_RALT,  KC_RGUI
     ),
-
     /* Lower layer: http://www.keyboard-layout-editor.com/#/gists/19ad0d3b5d745fbb2818db09740f5a11 */
     [LAYER_LOWER] = LAYOUT(
         _______,  _______,  _______,  _______,  _______,  _______,                      _______,  _______,  _______,  _______,  _______,  _______,
@@ -51,7 +51,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  KC_APP,   KC_PSCR,  KC_SLCK,  KC_PAUS,  KC_LGUI,  _______,  _______,  KC_BSLS,  KC_MINS,  KC_EQL,   KC_LBRC,  KC_RBRC,  KC_GRV,
                                       _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______
     ),
-
     /* Raise layer: http://www.keyboard-layout-editor.com/#/gists/912be7955f781cdaf692cc4d4c0b5823 */
     [LAYER_RAISE] = LAYOUT(
         _______,  _______,  _______,  _______,  _______,  _______,                      _______,  _______,  _______,  _______,  _______,  _______,
@@ -60,7 +59,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  KC_F6,    KC_F7,    KC_F8,    KC_F9,    KC_F10,   _______,  _______,  KC_HOME,  KC_PGDN,  KC_PGUP,  KC_END,   KC_F12,   KC_INS,
                                       _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______
     ),
-
     /* Adjust layer: http://www.keyboard-layout-editor.com/#/gists/8f6a3f08350a9bbe1d414b22bca4e6c7 */
     [LAYER_ADJUST] = LAYOUT(
         _______,  _______,  _______,  _______,  _______,  _______,                      _______,  _______,  _______,  _______,  _______,  _______,
@@ -69,8 +67,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  _______,  _______,  KC_MUTE,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,
                                       _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______
     ),
+    // clang-format on
 };
 
-layer_state_t layer_state_set_keymap(layer_state_t state) {
-    return update_tri_layer_state(state, LAYER_LOWER, LAYER_RAISE, LAYER_ADJUST);
-}
+layer_state_t layer_state_set_keymap(layer_state_t state) { return update_tri_layer_state(state, LAYER_LOWER, LAYER_RAISE, LAYER_ADJUST); }
diff --git a/layouts/community/60_ansi_split_bs_rshift/bcat/keymap.c b/layouts/community/60_ansi_split_bs_rshift/bcat/keymap.c
index adb31525a8..6bfafc3325 100644
--- a/layouts/community/60_ansi_split_bs_rshift/bcat/keymap.c
+++ b/layouts/community/60_ansi_split_bs_rshift/bcat/keymap.c
@@ -1,3 +1,19 @@
+/* Copyright 2021 Jonathan Rascher
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include QMK_KEYBOARD_H
 
 enum layer {
@@ -10,6 +26,7 @@ enum layer {
 #define LY_FN2 MO(LAYER_FUNCTION_2)
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    // clang-format off
     /* Default layer: http://www.keyboard-layout-editor.com/#/gists/327b41b5a933b3d44bf60ca9822e85dc */
     [LAYER_DEFAULT] = LAYOUT_60_ansi_split_bs_rshift(
         KC_ESC,   KC_1,     KC_2,     KC_3,     KC_4,     KC_5,     KC_6,     KC_7,     KC_8,     KC_9,     KC_0,     KC_MINS,  KC_EQL,   KC_BSLS,  KC_GRV,
@@ -36,4 +53,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  _______,  _______,  KC_MUTE,  _______,  BL_DEC,   _______,  RGB_SPD,  RGB_HUD,  RGB_SAD,  RGB_VAD,  _______,                      _______,
         _______,  _______,  _______,                                _______,                                          _______,  _______,  _______,  _______
     ),
+    // clang-format on
 };
diff --git a/layouts/community/60_tsangan_hhkb/bcat/keymap.c b/layouts/community/60_tsangan_hhkb/bcat/keymap.c
index 2079adb93c..05e6462d90 100644
--- a/layouts/community/60_tsangan_hhkb/bcat/keymap.c
+++ b/layouts/community/60_tsangan_hhkb/bcat/keymap.c
@@ -1,3 +1,19 @@
+/* Copyright 2021 Jonathan Rascher
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include QMK_KEYBOARD_H
 
 enum layer {
@@ -10,6 +26,7 @@ enum layer {
 #define LY_FN2 MO(LAYER_FUNCTION_2)
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    // clang-format off
     /* Default layer: http://www.keyboard-layout-editor.com/#/gists/86b33d75aa6f56d8781ab3d8475f4e77 */
     [LAYER_DEFAULT] = LAYOUT_60_tsangan_hhkb(
         KC_ESC,   KC_1,     KC_2,     KC_3,     KC_4,     KC_5,     KC_6,     KC_7,     KC_8,     KC_9,     KC_0,     KC_MINS,  KC_EQL,   KC_BSLS,  KC_GRV,
@@ -18,7 +35,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         KC_LSFT,  KC_Z,     KC_X,     KC_C,     KC_V,     KC_B,     KC_N,     KC_M,     KC_COMM,  KC_DOT,   KC_SLSH,  KC_RSFT,                      LY_FN1,
         KC_LCTL,  LY_FN2,   KC_LALT,                                KC_SPC,                                           KC_RALT,  KC_RGUI,            KC_RCTL
     ),
-
     /* Function 1 layer: http://www.keyboard-layout-editor.com/#/gists/f6311fd7e315de781143b80eb040a551 */
     [LAYER_FUNCTION_1] = LAYOUT_60_tsangan_hhkb(
         _______,  KC_F1,    KC_F2,    KC_F3,    KC_F4,    KC_F5,    KC_F6,    KC_F7,    KC_F8,    KC_F9,    KC_F10,   KC_F11,   KC_F12,   KC_INS,   KC_DEL,
@@ -27,7 +43,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  KC_APP,   _______,  _______,  _______,  _______,  _______,  _______,  KC_END,   KC_PGDN,  KC_DOWN,  _______,                      _______,
         _______,  _______,  _______,                                _______,                                          _______,  _______,            _______
     ),
-
     /* Function 2 layer: http://www.keyboard-layout-editor.com/#/gists/65ac939caec878401603bc36290852d4 */
     [LAYER_FUNCTION_2] = LAYOUT_60_tsangan_hhkb(
         _______,  KC_F1,    KC_F2,    KC_F3,    KC_F4,    KC_F5,    KC_F6,    KC_F7,    KC_F8,    KC_F9,    KC_F10,   KC_F11,   KC_F12,   KC_INS,   KC_DEL,
@@ -36,4 +51,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  _______,  _______,  KC_MUTE,  _______,  BL_DEC,   _______,  RGB_SPD,  RGB_HUD,  RGB_SAD,  RGB_VAD,  _______,                      _______,
         _______,  _______,  _______,                                _______,                                          _______,  _______,            _______
     ),
+    // clang-format on
 };
diff --git a/layouts/community/65_ansi_blocker_split_bs/bcat/keymap.c b/layouts/community/65_ansi_blocker_split_bs/bcat/keymap.c
index 75b891cda0..c91a1b0ead 100644
--- a/layouts/community/65_ansi_blocker_split_bs/bcat/keymap.c
+++ b/layouts/community/65_ansi_blocker_split_bs/bcat/keymap.c
@@ -1,3 +1,19 @@
+/* Copyright 2021 Jonathan Rascher
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include QMK_KEYBOARD_H
 
 enum layer {
@@ -8,6 +24,7 @@ enum layer {
 #define LY_FN MO(LAYER_FUNCTION)
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    // clang-format off
     /* Default layer: http://www.keyboard-layout-editor.com/#/gists/dd675b40cc4df2c7bb78847ac29f5988 */
     [LAYER_DEFAULT] = LAYOUT_65_ansi_blocker_split_bs(
         KC_ESC,   KC_1,     KC_2,     KC_3,     KC_4,     KC_5,     KC_6,     KC_7,     KC_8,     KC_9,     KC_0,     KC_MINS,  KC_EQL,   KC_BSLS,  KC_GRV,   KC_HOME,
@@ -25,4 +42,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  KC_APP,   _______,  KC_MUTE,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,                      _______,  _______,
         _______,  _______,  _______,                      _______,                                _______,  _______,                      _______,  _______,  _______
     ),
+    // clang-format on
 };
diff --git a/layouts/community/split_3x6_3/bcat/keymap.c b/layouts/community/split_3x6_3/bcat/keymap.c
index 934a8e31f2..4f68c8f843 100644
--- a/layouts/community/split_3x6_3/bcat/keymap.c
+++ b/layouts/community/split_3x6_3/bcat/keymap.c
@@ -34,6 +34,7 @@ enum layer {
 #define KY_ZMRST LCTL(KC_0)
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    // clang-format off
     /* Default layer: http://www.keyboard-layout-editor.com/#/gists/08d9827d916662a9414f48805aa895a5 */
     [LAYER_DEFAULT] = LAYOUT_split_3x6_3(
         KC_TAB,   KC_Q,     KC_W,     KC_E,     KC_R,     KC_T,                         KC_Y,     KC_U,     KC_I,     KC_O,     KC_P,     KC_BSPC,
@@ -41,7 +42,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         KC_LSFT,  KC_Z,     KC_X,     KC_C,     KC_V,     KC_B,                         KC_N,     KC_M,     KC_COMM,  KC_DOT,   KC_SLSH,  KC_RSFT,
                                                 KC_LCTL,  LY_LWR,   KC_SPC,   KC_ENT,   LY_RSE,   KC_RALT
     ),
-
     /* Lower layer: http://www.keyboard-layout-editor.com/#/gists/c3fba5eaa2cd70fdfbdbc0f9e34d3bc0 */
     [LAYER_LOWER] = LAYOUT_split_3x6_3(
         MC_ALTT,  KC_EXLM,  KC_AT,    KC_HASH,  KC_DLR,   KC_PERC,                      KC_CIRC,  KC_AMPR,  KC_ASTR,  KC_LPRN,  KC_RPRN,  _______,
@@ -49,7 +49,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  KC_APP,   KC_PSCR,  KC_SLCK,  KC_PAUS,  KC_LGUI,                      KC_BSLS,  KC_MINS,  KC_EQL,   KC_LBRC,  KC_RBRC,  KC_GRV,
                                                 _______,  _______,  _______,  _______,  _______,  _______
     ),
-
     /* Raise layer: http://www.keyboard-layout-editor.com/#/gists/08b44355d4ca85d294bad9e2821f91d7 */
     [LAYER_RAISE] = LAYOUT_split_3x6_3(
         KC_CAPS,  KC_1,     KC_2,     KC_3,     KC_4,     KC_5,                         KC_6,     KC_7,     KC_8,     KC_9,     KC_0,     _______,
@@ -57,7 +56,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  KC_F6,    KC_F7,    KC_F8,    KC_F9,    KC_F10,                       KC_HOME,  KC_PGDN,  KC_PGUP,  KC_END,   KC_F12,   KC_INS,
                                                 _______,  _______,  _______,  _______,  _______,  _______
     ),
-
     /* Adjust layer: http://www.keyboard-layout-editor.com/#/gists/77e7572e077b36a23eb2086017e16fee */
     [LAYER_ADJUST] = LAYOUT_split_3x6_3(
         _______,  NK_TOGG,  KC_MPLY,  KC_VOLU,  KC_MSTP,  _______,                      EEP_RST,  RESET,    _______,  _______,  _______,  _______,
@@ -65,8 +63,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______,  _______,  _______,  KC_MUTE,  _______,  _______,                      RGB_HUI,  RGB_SAD,  RGB_SAI,  RGB_HUD,  RGB_SPD,  _______,
                                                 _______,  _______,  _______,  RGB_TOG,  _______,  _______
     ),
+    // clang-format on
 };
 
-layer_state_t layer_state_set_keymap(layer_state_t state) {
-    return update_tri_layer_state(state, LAYER_LOWER, LAYER_RAISE, LAYER_ADJUST);
-}
+layer_state_t layer_state_set_keymap(layer_state_t state) { return update_tri_layer_state(state, LAYER_LOWER, LAYER_RAISE, LAYER_ADJUST); }
diff --git a/layouts/community/split_3x6_3/bcat/readme.md b/layouts/community/split_3x6_3/bcat/readme.md
index ed17b84186..c4bf891c40 100644
--- a/layouts/community/split_3x6_3/bcat/readme.md
+++ b/layouts/community/split_3x6_3/bcat/readme.md
@@ -1,5 +1,10 @@
 # bcat's split 3x6 + 3 thumb keys layout
 
+(See also the
+[BlueMicro](https://github.com/jpconstantineau/BlueMicro_BLE/tree/master/firmware/keyboards/crkbd/keymaps/bcat)
+and [ZMK](https://github.com/bcat/zmk-config/blob/master/config/corne.keymap)
+versions of this keymap.)
+
 This is my favorite split ergo layout for typing, featuring the traditional
 four ortho/ergo layers (Default, Lower, Raise, Adjust). It is loosely inspired
 by the default Planck (numbers on Lower, symbols on Raise) and Crkbd (Space on
diff --git a/users/bcat/bcat.c b/users/bcat/bcat.c
index 397d565da0..f21d282e43 100644
--- a/users/bcat/bcat.c
+++ b/users/bcat/bcat.c
@@ -1,3 +1,19 @@
+/* Copyright 2021 Jonathan Rascher
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "bcat.h"
 
 #if defined(RGBLIGHT_ENABLE)
diff --git a/users/bcat/bcat.h b/users/bcat/bcat.h
index 1ea05e5fa8..0dae774ec5 100644
--- a/users/bcat/bcat.h
+++ b/users/bcat/bcat.h
@@ -1,8 +1,24 @@
+/* Copyright 2021 Jonathan Rascher
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #pragma once
 
 #include "quantum.h"
 
-enum user_keycodes {
+enum user_keycode {
     MC_ALTT = SAFE_RANGE,
     KEYMAP_SAFE_RANGE,
 };
diff --git a/users/bcat/readme.md b/users/bcat/readme.md
index 6d097d663d..1922f95f4a 100644
--- a/users/bcat/readme.md
+++ b/users/bcat/readme.md
@@ -15,7 +15,7 @@ Columnar-staggered split ergo layout, preferred for typing. Used on Crkbd.
 * [60% Tsangan
 HHKB](https://github.com/qmk/qmk_firmware/tree/master/layouts/community/60_tsangan_hhkb/bcat):
 Row-staggered layout, preferred for gaming. Used on ai03 Polaris, CannonKeys
-AN-C, CannonKeys Instant60.
+AN-C, CannonKeys Instant60, DZ60.
 
 ## Other keymaps