Change include guards in quantum/ to pragma once (#11239)

50 files changed, 68 insertions, 204 deletions

diff --git a/quantum/api.h b/quantum/api.h
index 90a4de8339..0a30e9d6cc 100644
--- a/quantum/api.h
+++ b/quantum/api.h
@@ -14,8 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef _API_H_
-#define _API_H_
+#pragma once
 
 #ifdef __AVR__
 #    include "lufa.h"
@@ -54,5 +53,3 @@ __attribute__((weak)) bool process_api_quantum(uint8_t length, uint8_t* data);
 __attribute__((weak)) bool process_api_keyboard(uint8_t length, uint8_t* data);
 
 __attribute__((weak)) bool process_api_user(uint8_t length, uint8_t* data);
-
-#endif
diff --git a/quantum/api/api_sysex.h b/quantum/api/api_sysex.h
index 58b8cbb663..382f4bea44 100644
--- a/quantum/api/api_sysex.h
+++ b/quantum/api/api_sysex.h
@@ -14,13 +14,10 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef _API_SYSEX_H_
-#define _API_SYSEX_H_
+#pragma once
 
 #include "api.h"
 
 void send_bytes_sysex(uint8_t message_type, uint8_t data_type, uint8_t* bytes, uint16_t length);
 
 #define SEND_BYTES(mt, dt, b, l) send_bytes_sysex(mt, dt, b, l)
-
-#endif
diff --git a/quantum/audio/audio.h b/quantum/audio/audio.h
index 805cb4f7ab..bc00cd19e6 100644
--- a/quantum/audio/audio.h
+++ b/quantum/audio/audio.h
@@ -13,8 +13,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#ifndef AUDIO_H
-#define AUDIO_H
+
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -103,5 +103,3 @@ void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat);
 #define PLAY_LOOP(note_array) play_notes(&note_array, NOTE_ARRAY_SIZE((note_array)), true)
 
 bool is_playing_notes(void);
-
-#endif
diff --git a/quantum/audio/luts.h b/quantum/audio/luts.h
index 6fdd3b4635..74980b292e 100644
--- a/quantum/audio/luts.h
+++ b/quantum/audio/luts.h
@@ -14,6 +14,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#pragma once
+
 #if defined(__AVR__)
 #    include <avr/io.h>
 #    include <avr/interrupt.h>
@@ -23,14 +25,9 @@
 #    include <hal.h>
 #endif
 
-#ifndef LUTS_H
-#    define LUTS_H
-
-#    define VIBRATO_LUT_LENGTH 20
+#define VIBRATO_LUT_LENGTH 20
 
-#    define FREQUENCY_LUT_LENGTH 349
+#define FREQUENCY_LUT_LENGTH 349
 
 extern const float    vibrato_lut[VIBRATO_LUT_LENGTH];
 extern const uint16_t frequency_lut[FREQUENCY_LUT_LENGTH];
-
-#endif /* LUTS_H */
diff --git a/quantum/audio/muse.h b/quantum/audio/muse.h
index 6f382a7fee..ad2f96e43a 100644
--- a/quantum/audio/muse.h
+++ b/quantum/audio/muse.h
@@ -1,9 +1,6 @@
-#ifndef MUSE_H
-#define MUSE_H
+#pragma once
 
 #include "quantum.h"
 #include "process_audio.h"
 
 uint8_t muse_clock_pulse(void);
-
-#endif
diff --git a/quantum/audio/musical_notes.h b/quantum/audio/musical_notes.h
index 9742e19c43..8ac6aafd38 100644
--- a/quantum/audio/musical_notes.h
+++ b/quantum/audio/musical_notes.h
@@ -14,8 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef MUSICAL_NOTES_H
-#define MUSICAL_NOTES_H
+#pragma once
 
 // Tempo Placeholder
 #define TEMPO_DEFAULT 100
@@ -229,5 +228,3 @@
 #define NOTE_GF8 NOTE_FS8
 #define NOTE_AF8 NOTE_GS8
 #define NOTE_BF8 NOTE_AS8
-
-#endif
diff --git a/quantum/audio/voices.h b/quantum/audio/voices.h
index 0c45b0720e..abafa2b404 100644
--- a/quantum/audio/voices.h
+++ b/quantum/audio/voices.h
@@ -13,6 +13,9 @@
  * 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 <stdint.h>
 #include <stdbool.h>
 #if defined(__AVR__)
@@ -21,14 +24,11 @@
 #include "wait.h"
 #include "luts.h"
 
-#ifndef VOICES_H
-#    define VOICES_H
-
 float voice_envelope(float frequency);
 
 typedef enum {
     default_voice,
-#    ifdef AUDIO_VOICES
+#ifdef AUDIO_VOICES
     something,
     drums,
     butts_fader,
@@ -41,12 +41,10 @@ typedef enum {
 // duty_fourth_down,
 // duty_third_down,
 // duty_fifth_third_down,
-#    endif
+#endif
     number_of_voices  // important that this is last
 } voice_type;
 
 void set_voice(voice_type v);
 void voice_iterate(void);
 void voice_deiterate(void);
-
-#endif
diff --git a/quantum/color.h b/quantum/color.h
index f0ee782757..7448168b3a 100644
--- a/quantum/color.h
+++ b/quantum/color.h
@@ -14,8 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef COLOR_H
-#define COLOR_H
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -86,4 +85,3 @@ RGB hsv_to_rgb_nocie(HSV hsv);
 #ifdef RGBW
 void convert_rgb_to_rgbw(LED_TYPE *led);
 #endif
-#endif  // COLOR_H
diff --git a/quantum/keycode_config.h b/quantum/keycode_config.h
index aa75ba2c13..f878168c5f 100644
--- a/quantum/keycode_config.h
+++ b/quantum/keycode_config.h
@@ -14,13 +14,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#pragma once
+
 #include "eeconfig.h"
 #include "keycode.h"
 #include "action_code.h"
 
-#ifndef KEYCODE_CONFIG_H
-#    define KEYCODE_CONFIG_H
-
 uint16_t keycode_config(uint16_t keycode);
 uint8_t  mod_config(uint8_t mod);
 
@@ -42,5 +41,3 @@ typedef union {
 } keymap_config_t;
 
 extern keymap_config_t keymap_config;
-
-#endif /* KEYCODE_CONFIG_H */
diff --git a/quantum/keymap.h b/quantum/keymap.h
index 90a2398ba4..191e813977 100644
--- a/quantum/keymap.h
+++ b/quantum/keymap.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef KEYMAP_H
-#define KEYMAP_H
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -55,5 +54,3 @@ uint16_t keymap_function_id_to_action(uint16_t function_id);
 
 extern const uint16_t keymaps[][MATRIX_ROWS][MATRIX_COLS];
 extern const uint16_t fn_actions[];
-
-#endif
diff --git a/quantum/keymap_extras/keymap_nordic.h b/quantum/keymap_extras/keymap_nordic.h
index 8d2f76f273..76d2f4f6b0 100644
--- a/quantum/keymap_extras/keymap_nordic.h
+++ b/quantum/keymap_extras/keymap_nordic.h
@@ -13,8 +13,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#ifndef KEYMAP_NORDIC_H
-#define KEYMAP_NORDIC_H
+
+#pragma once
 
 #include "keymap.h"
 
@@ -66,5 +66,3 @@
 
 #define NO_BSLS ALGR(KC_MINS)
 #define NO_MU ALGR(KC_M)
-
-#endif
diff --git a/quantum/keymap_extras/keymap_plover_dvorak.h b/quantum/keymap_extras/keymap_plover_dvorak.h
index d40ff5c6bb..445a123151 100644
--- a/quantum/keymap_extras/keymap_plover_dvorak.h
+++ b/quantum/keymap_extras/keymap_plover_dvorak.h
@@ -13,8 +13,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#ifndef KEYMAP_PLOVER_DVORAK_H
-#define KEYMAP_PLOVER_DVORAK_H
+
+#pragma once
 
 #include "keymap_dvorak.h"
 
@@ -43,5 +43,3 @@
 #define PD_O DV_V
 #define PD_E DV_N
 #define PD_U DV_M
-
-#endif
diff --git a/quantum/keymap_extras/keymap_steno.h b/quantum/keymap_extras/keymap_steno.h
index 31dcbf7064..b9115fb8bf 100644
--- a/quantum/keymap_extras/keymap_steno.h
+++ b/quantum/keymap_extras/keymap_steno.h
@@ -13,8 +13,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#ifndef KEYMAP_STENO_H
-#define KEYMAP_STENO_H
+
+#pragma once
 
 #include "keymap.h"
 
@@ -72,5 +72,3 @@ enum steno_keycodes {
     STN_ZR,
     STN__MAX = STN_ZR,  // must be less than QK_STENO_BOLT
 };
-
-#endif
diff --git a/quantum/led_matrix.h b/quantum/led_matrix.h
index 5867ba9876..7dcdf1d482 100644
--- a/quantum/led_matrix.h
+++ b/quantum/led_matrix.h
@@ -17,8 +17,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LED_MATRIX_H
-#define LED_MATRIX_H
+#pragma once
 
 #ifndef BACKLIGHT_ENABLE
 #    error You must define BACKLIGHT_ENABLE with LED_MATRIX_ENABLE
@@ -123,5 +122,3 @@ typedef struct {
 } led_matrix_driver_t;
 
 extern const led_matrix_driver_t led_matrix_driver;
-
-#endif
diff --git a/quantum/led_tables.h b/quantum/led_tables.h
index 8052d566cf..cd3e5d74c1 100644
--- a/quantum/led_tables.h
+++ b/quantum/led_tables.h
@@ -13,8 +13,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef LED_TABLES_H
-#define LED_TABLES_H
+#pragma once
 
 #include "progmem.h"
 #include <stdint.h>
@@ -22,5 +21,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifdef USE_CIE1931_CURVE
 extern const uint8_t CIE1931_CURVE[] PROGMEM;
 #endif
-
-#endif
diff --git a/quantum/pointing_device.h b/quantum/pointing_device.h
index 29398ebb3a..aa074bb37d 100644
--- a/quantum/pointing_device.h
+++ b/quantum/pointing_device.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef POINTING_DEVICE_H
-#define POINTING_DEVICE_H
+#pragma once
 
 #include <stdint.h>
 #include "host.h"
@@ -27,5 +26,3 @@ void           pointing_device_task(void);
 void           pointing_device_send(void);
 report_mouse_t pointing_device_get_report(void);
 void           pointing_device_set_report(report_mouse_t newMouseReport);
-
-#endif
diff --git a/quantum/process_keycode/process_audio.h b/quantum/process_keycode/process_audio.h
index 3a84c3d869..d89a834ea8 100644
--- a/quantum/process_keycode/process_audio.h
+++ b/quantum/process_keycode/process_audio.h
@@ -1,5 +1,4 @@
-#ifndef PROCESS_AUDIO_H
-#define PROCESS_AUDIO_H
+#pragma once
 
 float compute_freq_for_midi_note(uint8_t note);
 
@@ -9,5 +8,3 @@ void process_audio_noteoff(uint8_t note);
 void process_audio_all_notes_off(void);
 
 void audio_on_user(void);
-
-#endif
diff --git a/quantum/process_keycode/process_clicky.h b/quantum/process_keycode/process_clicky.h
index f746edb951..67b6463c5d 100644
--- a/quantum/process_keycode/process_clicky.h
+++ b/quantum/process_keycode/process_clicky.h
@@ -1,5 +1,4 @@
-#ifndef PROCESS_CLICKY_H
-#define PROCESS_CLICKY_H
+#pragma once
 
 void clicky_play(void);
 bool process_clicky(uint16_t keycode, keyrecord_t *record);
@@ -13,5 +12,3 @@ void clicky_on(void);
 void clicky_off(void);
 
 bool is_clicky_on(void);
-
-#endif
diff --git a/quantum/process_keycode/process_combo.h b/quantum/process_keycode/process_combo.h
index 0f01aae93e..e51a2f1f4e 100644
--- a/quantum/process_keycode/process_combo.h
+++ b/quantum/process_keycode/process_combo.h
@@ -14,8 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef PROCESS_COMBO_H
-#define PROCESS_COMBO_H
+#pragma once
 
 #include "progmem.h"
 #include "quantum.h"
@@ -62,5 +61,3 @@ void combo_enable(void);
 void combo_disable(void);
 void combo_toggle(void);
 bool is_combo_enabled(void);
-
-#endif
diff --git a/quantum/process_keycode/process_key_lock.h b/quantum/process_keycode/process_key_lock.h
index a8e110a4bf..baa0b39077 100644
--- a/quantum/process_keycode/process_key_lock.h
+++ b/quantum/process_keycode/process_key_lock.h
@@ -14,11 +14,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef PROCESS_KEY_LOCK_H
-#define PROCESS_KEY_LOCK_H
+#pragma once
 
 #include "quantum.h"
 
 bool process_key_lock(uint16_t *keycode, keyrecord_t *record);
-
-#endif  // PROCESS_KEY_LOCK_H
diff --git a/quantum/process_keycode/process_leader.h b/quantum/process_keycode/process_leader.h
index e0edf57b32..9844f27a1b 100644
--- a/quantum/process_keycode/process_leader.h
+++ b/quantum/process_keycode/process_leader.h
@@ -14,8 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef PROCESS_LEADER_H
-#define PROCESS_LEADER_H
+#pragma once
 
 #include "quantum.h"
 
@@ -37,5 +36,3 @@ void qk_leader_start(void);
     extern uint16_t leader_sequence[5]; \
     extern uint8_t  leader_sequence_size
 #define LEADER_DICTIONARY() if (leading && timer_elapsed(leader_time) > LEADER_TIMEOUT)
-
-#endif
diff --git a/quantum/process_keycode/process_midi.h b/quantum/process_keycode/process_midi.h
index ef5661dd4d..68c6eda666 100644
--- a/quantum/process_keycode/process_midi.h
+++ b/quantum/process_keycode/process_midi.h
@@ -14,8 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef PROCESS_MIDI_H
-#define PROCESS_MIDI_H
+#pragma once
 
 #include "quantum.h"
 
@@ -53,5 +52,3 @@ uint8_t midi_compute_note(uint16_t keycode);
 #    endif  // MIDI_ADVANCED
 
 #endif  // MIDI_ENABLE
-
-#endif
diff --git a/quantum/process_keycode/process_music.h b/quantum/process_keycode/process_music.h
index 292bc53742..01014aa6c2 100644
--- a/quantum/process_keycode/process_music.h
+++ b/quantum/process_keycode/process_music.h
@@ -14,8 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef PROCESS_MUSIC_H
-#define PROCESS_MUSIC_H
+#pragma once
 
 #include "quantum.h"
 
@@ -57,5 +56,3 @@ bool music_mask_user(uint16_t keycode);
 #    endif
 
 #endif  // defined(AUDIO_ENABLE) || (defined(MIDI_ENABLE) && defined(MIDI_BASIC))
-
-#endif
diff --git a/quantum/process_keycode/process_printer.h b/quantum/process_keycode/process_printer.h
index 71d3a4b56a..3c6d06ff94 100644
--- a/quantum/process_keycode/process_printer.h
+++ b/quantum/process_keycode/process_printer.h
@@ -14,13 +14,10 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef PROCESS_PRINTER_H
-#define PROCESS_PRINTER_H
+#pragma once
 
 #include "quantum.h"
 
 #include "protocol/serial.h"
 
 bool process_printer(uint16_t keycode, keyrecord_t *record);
-
-#endif
diff --git a/quantum/process_keycode/process_steno.h b/quantum/process_keycode/process_steno.h
index ed049eb13f..d11fd40af0 100644
--- a/quantum/process_keycode/process_steno.h
+++ b/quantum/process_keycode/process_steno.h
@@ -13,8 +13,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#ifndef PROCESS_STENO_H
-#define PROCESS_STENO_H
+
+#pragma once
 
 #include "quantum.h"
 
@@ -25,5 +25,3 @@ void     steno_init(void);
 void     steno_set_mode(steno_mode_t mode);
 uint8_t *steno_get_state(void);
 uint8_t *steno_get_chord(void);
-
-#endif
diff --git a/quantum/process_keycode/process_tap_dance.h b/quantum/process_keycode/process_tap_dance.h
index 09ceef74d8..a013c5cabf 100644
--- a/quantum/process_keycode/process_tap_dance.h
+++ b/quantum/process_keycode/process_tap_dance.h
@@ -13,8 +13,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#ifndef PROCESS_TAP_DANCE_H
-#define PROCESS_TAP_DANCE_H
+
+#pragma once
 
 #ifdef TAP_DANCE_ENABLE
 
@@ -101,5 +101,3 @@ void qk_tap_dance_dual_role_reset(qk_tap_dance_state_t *state, void *user_data);
 #    define TD(n) KC_NO
 
 #endif
-
-#endif
diff --git a/quantum/process_keycode/process_terminal.h b/quantum/process_keycode/process_terminal.h
index 8426f442b6..0159131e5b 100644
--- a/quantum/process_keycode/process_terminal.h
+++ b/quantum/process_keycode/process_terminal.h
@@ -14,8 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef PROCESS_TERMINAL_H
-#define PROCESS_TERMINAL_H
+#pragma once
 
 #include "quantum.h"
 
@@ -23,5 +22,3 @@ extern const char keycode_to_ascii_lut[58];
 extern const char shifted_keycode_to_ascii_lut[58];
 extern const char terminal_prompt[8];
 bool              process_terminal(uint16_t keycode, keyrecord_t *record);
-
-#endif
\ No newline at end of file
diff --git a/quantum/process_keycode/process_terminal_nop.h b/quantum/process_keycode/process_terminal_nop.h
index 56895b33c3..36e25320c5 100644
--- a/quantum/process_keycode/process_terminal_nop.h
+++ b/quantum/process_keycode/process_terminal_nop.h
@@ -14,12 +14,9 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef PROCESS_TERMINAL_H
-#define PROCESS_TERMINAL_H
+#pragma once
 
 #include "quantum.h"
 
 #define TERM_ON KC_NO
 #define TERM_OFF KC_NO
-
-#endif
\ No newline at end of file
diff --git a/quantum/quantum_keycodes.h b/quantum/quantum_keycodes.h
index a2cc7b38d9..0160c5586d 100644
--- a/quantum/quantum_keycodes.h
+++ b/quantum/quantum_keycodes.h
@@ -13,8 +13,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#ifndef QUANTUM_KEYCODES_H
-#define QUANTUM_KEYCODES_H
+
+#pragma once
 
 #if defined(SEQUENCER_ENABLE)
 #    include "sequencer.h"
@@ -889,5 +889,3 @@ enum quantum_keycodes {
 #define DM_RSTP DYN_REC_STOP
 #define DM_PLY1 DYN_MACRO_PLAY1
 #define DM_PLY2 DYN_MACRO_PLAY2
-
-#endif  // QUANTUM_KEYCODES_H
diff --git a/quantum/rgb.h b/quantum/rgb.h
index 7b6ea0542f..2602fc0b20 100644
--- a/quantum/rgb.h
+++ b/quantum/rgb.h
@@ -14,8 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef RGB_H
-#define RGB_H
+#pragma once
 
 __attribute__((weak)) void rgblight_toggle(void){};
 
@@ -38,5 +37,3 @@ __attribute__((weak)) void rgblight_decrease_val(void){};
 __attribute__((weak)) void rgblight_increase_speed(void){};
 
 __attribute__((weak)) void rgblight_decrease_speed(void){};
-
-#endif
\ No newline at end of file
diff --git a/quantum/rgb_matrix.h b/quantum/rgb_matrix.h
index 1fd016d79a..8c80c1bff0 100644
--- a/quantum/rgb_matrix.h
+++ b/quantum/rgb_matrix.h
@@ -16,8 +16,7 @@
  * along w