QMK Double Space Mode

/*  https://www.reddit.com/r/olkb/comments/x1ju6n/help_for_a_double_space_macro_on_qmk/
 *  Code to create a toggleable mode where pressing space sends two spaces instead.
 *  It also sets the color of the space bar to blue when this mode is active.
 *  This can go into keymap.c
 */

bool double_space_mode = false;  // variable to track status of double space mode

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    switch(keycode) {
        case TOG_2SPC:
            if (record->event.pressed)   // when TOG_2SPC is pressed
                double_space_mode ^= 1;  // toggle double_space_mode
            return false;

        case KC_SPACE:
            if (record->event.pressed && double_space_mode) {  // if double space mode is active
                SEND_STRING("  ");  // send two spaces
                return false;       // do nothing else
            }
            return true;                                       // otherwise, act as a normal space key
    }

    return true;
}


// LED Index for SPACE key.  Look in the rev_010x.c file for your keyboard version to find this
// https://github.com/qmk/qmk_firmware/blob/master/keyboards/keychron/q1/rev_0100/rev_0100.c#L124
#define SPACE_LED_IDX 75

void rgb_matrix_indicators_user(void) {
  if (double_space_mode)                            // if double space mode is active
    rgb_matrix_set_color(SPACE_LED_IDX, RGB_BLUE);  // set color of SPACE key's LED to blue
}