Apply ternary macros

Marlin/src/feature/runout.h

 
     // Give the response a chance to update its counter.
     static inline void run() {
-      if (enabled && !filament_ran_out && (printingIsActive()
-        #if ENABLED(ADVANCED_PAUSE_FEATURE)
-          || did_pause_print
-        #endif
-      )) {
+      if ( enabled && !filament_ran_out
+        && (printingIsActive() || TERN0(ADVANCED_PAUSE_FEATURE, did_pause_print))
+      ) {
         #ifdef FILAMENT_RUNOUT_DISTANCE_MM
           cli(); // Prevent RunoutResponseDelayed::block_completed from accumulating here
         #endif
 
     // Return a bitmask of runout flag states (1 bits always indicates runout)
     static inline uint8_t poll_runout_states() {
-      return (poll_runout_pins()
-        #if DISABLED(FIL_RUNOUT_INVERTING)
-          ^ uint8_t(_BV(NUM_RUNOUT_SENSORS) - 1)
-        #endif
-      );
+      return poll_runout_pins() ^ uint8_t(TERN0(FIL_RUNOUT_INVERTING, _BV(NUM_RUNOUT_SENSORS) - 1));
     }
 
   #undef INIT_RUNOUT_PIN
     private:
       static inline bool poll_runout_state(const uint8_t extruder) {
         const uint8_t runout_states = poll_runout_states();
-
         #if NUM_RUNOUT_SENSORS == 1
           UNUSED(extruder);
+        #else
+          if ( !TERN0(DUAL_X_CARRIAGE, dxc_is_duplicating())
+            && !TERN0(MULTI_NOZZLE_DUPLICATION, extruder_duplication_enabled)
+          ) return TEST(runout_states, extruder); // A specific extruder ran out
         #endif
-
-        if (true
-          #if NUM_RUNOUT_SENSORS > 1
-            #if ENABLED(DUAL_X_CARRIAGE)
-              && (dual_x_carriage_mode == DXC_DUPLICATION_MODE || dual_x_carriage_mode == DXC_MIRRORED_MODE)
-            #elif ENABLED(MULTI_NOZZLE_DUPLICATION)
-              && extruder_duplication_enabled
-            #else
-              && false
-            #endif
-          #endif
-        ) return runout_states;               // Any extruder
-
-        #if NUM_RUNOUT_SENSORS > 1
-          return TEST(runout_states, extruder); // Specific extruder
-        #endif
+        return !!runout_states;                   // Any extruder ran out
       }
 
     public:
 
       static inline void block_completed(const block_t* const b) {
         if (b->steps.x || b->steps.y || b->steps.z
-          #if ENABLED(ADVANCED_PAUSE_FEATURE)
-            || did_pause_print // Allow pause purge move to re-trigger runout state
-          #endif
+          || TERN0(ADVANCED_PAUSE_FEATURE, did_pause_print) // Allow pause purge move to re-trigger runout state
         ) {
           // Only trigger on extrusion with XYZ movement to allow filament change and retract/recover.
           const uint8_t e = b->extruder;
 typedef TFilamentMonitor<
   #ifdef FILAMENT_RUNOUT_DISTANCE_MM
     RunoutResponseDelayed,
-    #if ENABLED(FILAMENT_MOTION_SENSOR)
-      FilamentSensorEncoder
-    #else
-      FilamentSensorSwitch
-    #endif
+    TERN(FILAMENT_MOTION_SENSOR, FilamentSensorEncoder, FilamentSensorSwitch)
   #else
     RunoutResponseDebounced, FilamentSensorSwitch
   #endif

Marlin/src/gcode/feature/pause/M600.cpp

   #if EXTRUDERS > 1
     // Change toolhead if specified
     const uint8_t active_extruder_before_filament_change = active_extruder;
-    if (
-      active_extruder != target_extruder
-      #if ENABLED(DUAL_X_CARRIAGE)
-        && dual_x_carriage_mode != DXC_DUPLICATION_MODE && dual_x_carriage_mode != DXC_MIRRORED_MODE
-      #endif
-    ) tool_change(target_extruder, false);
+    if (active_extruder != target_extruder && TERN1(DUAL_X_CARRIAGE, !dxc_is_duplicating()))
+      tool_change(target_extruder, false);
   #endif
 
   // Initial retract before move to filament change position

Marlin/src/lcd/menu/menu.cpp

     screen_history[screen_history_depth++] = { currentScreen, encoderPosition, encoderTopLine, screen_items };
 }
 
-void MarlinUI::_goto_previous_screen(
-  #if ENABLED(TURBO_BACK_MENU_ITEM)
-    const bool is_back/*=false*/
-  #endif
-) {
+void MarlinUI::_goto_previous_screen(TERN_(TURBO_BACK_MENU_ITEM, const bool is_back/*=false*/)) {
   #if DISABLED(TURBO_BACK_MENU_ITEM)
     constexpr bool is_back = false;
   #endif
           doubleclick_expire_ms = millis() + DOUBLECLICK_MAX_INTERVAL;
       }
       else if (screen == status_screen && currentScreen == menu_main && PENDING(millis(), doubleclick_expire_ms)) {
-
-        #if ENABLED(BABYSTEP_WITHOUT_HOMING)
-          constexpr bool can_babystep = true;
-        #else
-          const bool can_babystep = all_axes_known();
-        #endif
-        #if ENABLED(BABYSTEP_ALWAYS_AVAILABLE)
-          constexpr bool should_babystep = true;
-        #else
-          const bool should_babystep = printer_busy();
-        #endif
-
-        if (should_babystep && can_babystep) {
-          screen =
-            #if ENABLED(BABYSTEP_ZPROBE_OFFSET)
-              lcd_babystep_zoffset
-            #else
-              lcd_babystep_z
-            #endif
-          ;
-        }
-        #if ENABLED(MOVE_Z_WHEN_IDLE)
-          else {
+        if ( (ENABLED(BABYSTEP_WITHOUT_HOMING) || all_axes_known())
+          && (ENABLED(BABYSTEP_ALWAYS_AVAILABLE) || printer_busy()) )
+          screen = TERN(BABYSTEP_ZPROBE_OFFSET, lcd_babystep_zoffset, lcd_babystep_z);
+        else {
+          #if ENABLED(MOVE_Z_WHEN_IDLE)
             move_menu_scale = MOVE_Z_IDLE_MULTIPLICATOR;
             screen = lcd_move_z;
-          }
-        #endif
+          #endif
+        }
       }
     #endif
 
 
     // Re-initialize custom characters that may be re-used
     #if HAS_CHARACTER_LCD
-      if (true
-        #if ENABLED(AUTO_BED_LEVELING_UBL)
-          && !ubl.lcd_map_control
-        #endif
-      ) set_custom_characters(screen == status_screen ? CHARSET_INFO : CHARSET_MENU);
+      if (TERN1(AUTO_BED_LEVELING_UBL, !ubl.lcd_map_control))
+        set_custom_characters(screen == status_screen ? CHARSET_INFO : CHARSET_MENU);
     #endif
 
     refresh(LCDVIEW_CALL_REDRAW_NEXT);
 
       const float diff = planner.steps_to_mm[Z_AXIS] * babystep_increment,
                   new_probe_offset = probe.offset.z + diff,
-                  new_offs =
-                    #if ENABLED(BABYSTEP_HOTEND_Z_OFFSET)
-                      do_probe ? new_probe_offset : hotend_offset[active_extruder].z - diff
-                    #else
-                      new_probe_offset
-                    #endif
-                  ;
+                  new_offs = TERN(BABYSTEP_HOTEND_Z_OFFSET
+                    , do_probe ? new_probe_offset : hotend_offset[active_extruder].z - diff
+                    , new_probe_offset
+                  );
       if (WITHIN(new_offs, Z_PROBE_OFFSET_RANGE_MIN, Z_PROBE_OFFSET_RANGE_MAX)) {
 
         babystep.add_steps(Z_AXIS, babystep_increment);
       }
     }
     if (ui.should_draw()) {
-      #if ENABLED(BABYSTEP_HOTEND_Z_OFFSET)
-        if (!do_probe)
-          MenuEditItemBase::draw_edit_screen(GET_TEXT(MSG_HOTEND_OFFSET_Z), ftostr54sign(hotend_offset[active_extruder].z));
-      #endif
       if (do_probe) {
         MenuEditItemBase::draw_edit_screen(GET_TEXT(MSG_ZPROBE_ZOFFSET), BABYSTEP_TO_STR(probe.offset.z));
         TERN_(BABYSTEP_ZPROBE_GFX_OVERLAY, _lcd_zoffset_overlay_gfx(probe.offset.z));
       }
+      else {
+        #if ENABLED(BABYSTEP_HOTEND_Z_OFFSET)
+          MenuEditItemBase::draw_edit_screen(GET_TEXT(MSG_HOTEND_OFFSET_Z), ftostr54sign(hotend_offset[active_extruder].z));
+        #endif
+      }
     }
   }
 
 #endif // BABYSTEP_ZPROBE_OFFSET
 
 #if ENABLED(EEPROM_SETTINGS)
-  void lcd_store_settings() {
-    const bool saved = settings.save();
-    ui.completion_feedback(saved);
-    UNUSED(saved);
-  }
-  void lcd_load_settings() {
-    const bool loaded = settings.load();
-    ui.completion_feedback(loaded);
-    UNUSED(loaded);
-  }
+  void lcd_store_settings() { ui.completion_feedback(settings.save()); }
+  void lcd_load_settings()  { ui.completion_feedback(settings.load()); }
 #endif
 
 void _lcd_draw_homing() {

Marlin/src/lcd/menu/menu_advanced.cpp

     #endif
 
     #if ENABLED(ADVANCED_PAUSE_FEATURE)
-      constexpr float extrude_maxlength =
-        #if ENABLED(PREVENT_LENGTHY_EXTRUDE)
-          EXTRUDE_MAXLENGTH
-        #else
-          999
-        #endif
-      ;
+      constexpr float extrude_maxlength = TERN(PREVENT_LENGTHY_EXTRUDE, EXTRUDE_MAXLENGTH, 999);
 
       EDIT_ITEM_FAST(float3, MSG_FILAMENT_UNLOAD, &fc_settings[active_extruder].unload_length, 0, extrude_maxlength);
       #if EXTRUDERS > 1

Marlin/src/lcd/menu/menu_configuration.cpp

   #if ENABLED(BLTOUCH_LCD_VOLTAGE_MENU)
     void bltouch_report() {
       SERIAL_ECHOLNPAIR("EEPROM Last BLTouch Mode - ", (int)bltouch.last_written_mode);
-      SERIAL_ECHOLNPGM("Configuration BLTouch Mode - "
-        #if ENABLED(BLTOUCH_SET_5V_MODE)
-          "5V"
-        #else
-          "OD"
-        #endif
-      );
+      SERIAL_ECHOLNPGM("Configuration BLTouch Mode - " TERN(BLTOUCH_SET_5V_MODE, "5V", "OD"));
       char mess[21];
       strcpy_P(mess, PSTR("BLTouch Mode - "));
       strcpy_P(&mess[15], bltouch.last_written_mode ? PSTR("5V") : PSTR("OD"));
   //
   #if ENABLED(CASE_LIGHT_MENU)
     #if DISABLED(CASE_LIGHT_NO_BRIGHTNESS)
-      if (true
-        #if DISABLED(CASE_LIGHT_USE_NEOPIXEL)
-          && PWM_PIN(CASE_LIGHT_PIN)
-        #endif
-      )
+      if (TERN1(CASE_LIGHT_USE_NEOPIXEL, PWM_PIN(CASE_LIGHT_PIN)))
         SUBMENU(MSG_CASE_LIGHT, menu_case_light);
       else
     #endif

Marlin/src/lcd/menu/menu_game.cpp

 
 void menu_game() {
   START_MENU();
-  BACK_ITEM(
-    #if ENABLED(LCD_INFO_MENU)
-      MSG_INFO_MENU
-    #else
-      MSG_MAIN
-    #endif
-  );
+  BACK_ITEM(TERN(LCD_INFO_MENU, MSG_INFO_MENU, MSG_MAIN));
   #if ENABLED(MARLIN_BRICKOUT)
     SUBMENU(MSG_BRICKOUT, brickout.enter_game);
   #endif

Marlin/src/lcd/menu/menu_info.cpp

 
     printStatistics stats = print_job_timer.getStats();
 
-    START_SCREEN();                                                                           // 12345678901234567890
-    VALUE_ITEM(MSG_INFO_PRINT_COUNT, i16tostr3left(stats.totalPrints), SS_LEFT);              // Print Count: 999
-    VALUE_ITEM(MSG_INFO_COMPLETED_PRINTS, i16tostr3left(stats.finishedPrints), SS_LEFT);      // Completed  : 666
+    char buffer[21];
+
+    START_SCREEN();                                                                         // 12345678901234567890
+    VALUE_ITEM(MSG_INFO_PRINT_COUNT, i16tostr3left(stats.totalPrints), SS_LEFT);            // Print Count: 999
+    VALUE_ITEM(MSG_INFO_COMPLETED_PRINTS, i16tostr3left(stats.finishedPrints), SS_LEFT);    // Completed  : 666
 
-    STATIC_ITEM(MSG_INFO_PRINT_TIME, SS_LEFT);                                                // Total print Time:
+    STATIC_ITEM(MSG_INFO_PRINT_TIME, SS_LEFT);                                              // Total print Time:
     STATIC_ITEM_P(PSTR("> "), SS_LEFT, duration_t(stats.printTime).toString(buffer));         // > 99y 364d 23h 59m 59s
 
-    STATIC_ITEM(MSG_INFO_PRINT_LONGEST, SS_LEFT);                                             // Longest job time:
+    STATIC_ITEM(MSG_INFO_PRINT_LONGEST, SS_LEFT);                                           // Longest job time:
     STATIC_ITEM_P(PSTR("> "), SS_LEFT, duration_t(stats.longestPrint).toString(buffer));      // > 99y 364d 23h 59m 59s
 
-    STATIC_ITEM(MSG_INFO_PRINT_FILAMENT, SS_LEFT);                                            // Extruded total:
-    sprintf_P(buffer, PSTR("%ld.%im"), long(stats.filamentUsed / 1000), int16_t(stats.filamentUsed / 100) % 10);
-    STATIC_ITEM_P(PSTR("> "), SS_LEFT, buffer);                                               // > 125m
+    STATIC_ITEM(MSG_INFO_PRINT_FILAMENT, SS_LEFT);                                          // Extruded total:
+    sprintf_P(buffer, PSTR("%ld.%im")
+      , long(stats.filamentUsed / 1000)
+      , int16_t(stats.filamentUsed / 100) % 10
+    );
+    STATIC_ITEM_P(PSTR("> "), SS_LEFT, buffer);                                             // > 125m
 
     #if SERVICE_INTERVAL_1 > 0 || SERVICE_INTERVAL_2 > 0 || SERVICE_INTERVAL_3 > 0
       strcpy_P(buffer, GET_TEXT(MSG_SERVICE_IN));
   #endif
 
   #if EXTRUDERS
-  {
-    STATIC_ITEM(
-      #if WATCH_HOTENDS
-        MSG_INFO_RUNAWAY_ON
-      #else
-        MSG_INFO_RUNAWAY_OFF
-      #endif
-      , SS_LEFT
-    );
-  }
+    STATIC_ITEM(TERN(WATCH_HOTENDS, MSG_INFO_RUNAWAY_ON, MSG_INFO_RUNAWAY_OFF), SS_LEFT);
   #endif
 
   #if HAS_HEATED_BED
     STATIC_ITEM_P(PSTR("BED:" THERMISTOR_NAME), SS_INVERT);
     VALUE_ITEM_P(MSG_INFO_MIN_TEMP, STRINGIFY(BED_MINTEMP), SS_LEFT);
     VALUE_ITEM_P(MSG_INFO_MAX_TEMP, STRINGIFY(BED_MAXTEMP), SS_LEFT);
-    STATIC_ITEM(
-      #if WATCH_BED
-        MSG_INFO_RUNAWAY_ON
-      #else
-        MSG_INFO_RUNAWAY_OFF
-      #endif
-      , SS_LEFT
-    );
-  }
+    STATIC_ITEM(TERN(WATCH_BED, MSG_INFO_RUNAWAY_ON, MSG_INFO_RUNAWAY_OFF), SS_LEFT);
   #endif
 
   #if HAS_HEATED_CHAMBER
-  {
     #undef THERMISTOR_ID
     #define THERMISTOR_ID TEMP_SENSOR_CHAMBER
     #include "../thermistornames.h"
     STATIC_ITEM_P(PSTR("CHAM:" THERMISTOR_NAME), SS_INVERT);
     VALUE_ITEM_P(MSG_INFO_MIN_TEMP, STRINGIFY(CHAMBER_MINTEMP), SS_LEFT);
     VALUE_ITEM_P(MSG_INFO_MAX_TEMP, STRINGIFY(CHAMBER_MAXTEMP), SS_LEFT);
-    STATIC_ITEM(
-      #if WATCH_CHAMBER
-        MSG_INFO_RUNAWAY_ON
-      #else
-        MSG_INFO_RUNAWAY_OFF
-      #endif
-      , SS_LEFT
-    );
-  }
+    STATIC_ITEM(TERN(WATCH_CHAMBER, MSG_INFO_RUNAWAY_ON, MSG_INFO_RUNAWAY_OFF), SS_LEFT);
   #endif
 
   END_SCREEN();
   START_MENU();
   BACK_ITEM(MSG_MAIN);
   #if ENABLED(LCD_PRINTER_INFO_IS_BOOTSCREEN)
-    SUBMENU(MSG_INFO_PRINTER_MENU, (
-      #if ENABLED(SHOW_CUSTOM_BOOTSCREEN)
-        menu_show_custom_bootscreen
-      #else
-        menu_show_marlin_bootscreen
-      #endif
-    ));
+    SUBMENU(MSG_INFO_PRINTER_MENU, TERN(SHOW_CUSTOM_BOOTSCREEN, menu_show_custom_bootscreen, menu_show_marlin_bootscreen));
   #else
     SUBMENU(MSG_INFO_PRINTER_MENU, menu_info_printer);           // Printer Info >
     SUBMENU(MSG_INFO_BOARD_MENU, menu_info_board);               // Board Info >

Marlin/src/lcd/menu/menu_mixer.cpp

   BACK_ITEM(MSG_MAIN);
 
   v_index = mixer.get_current_vtool();
-  EDIT_ITEM(uint8, MSG_ACTIVE_VTOOL, &v_index, 0, MIXING_VIRTUAL_TOOLS - 1, _lcd_mixer_select_vtool
-    #if HAS_DUAL_MIXING
-      , true
-    #endif
-  );
+  EDIT_ITEM(uint8, MSG_ACTIVE_VTOOL, &v_index, 0, MIXING_VIRTUAL_TOOLS - 1, _lcd_mixer_select_vtool, ENABLED(HAS_DUAL_MIXING));
 
   #if HAS_DUAL_MIXING
   {

Marlin/src/lcd/menu/menu_mmu2.cpp

   ui.reset_status();
 }
 void action_mmu2_load_all() {
-  LOOP_L_N(i, EXTRUDERS)
-    _mmu2_load_filament(i);
+  LOOP_L_N(i, EXTRUDERS) _mmu2_load_filament(i);
   ui.return_to_status();
 }
 

Marlin/src/lcd/menu/menu_motion.cpp

 // Tell ui.update() to start a move to current_position" after a short delay.
 //
 inline void manual_move_to_current(AxisEnum axis
-  #if E_MANUAL > 1
+  #if MULTI_MANUAL
     , const int8_t eindex=-1
   #endif
 ) {
-  #if E_MANUAL > 1
+  #if MULTI_MANUAL
     if (axis == E_AXIS) ui.manual_move_e_index = eindex >= 0 ? eindex : active_extruder;
   #endif
   manual_move_start_time = millis() + (move_menu_scale < 0.99f ? 0UL : 250UL); // delay for bigger moves
 
 #if E_MANUAL
 
-  static void lcd_move_e(
-    #if E_MANUAL > 1
-      const int8_t eindex=-1
-    #endif
-  ) {
+  static void lcd_move_e(TERN_(MULTI_MANUAL, const int8_t eindex=-1)) {
     if (ui.use_click()) return ui.goto_previous_screen_no_defer();
     if (ui.encoderPosition) {
       if (!ui.processing_manual_move) {
         const float diff = float(int32_t(ui.encoderPosition)) * move_menu_scale;
-        #if IS_KINEMATIC
-          manual_move_offset += diff;
-        #else
-          current_position.e += diff;
-        #endif
+        TERN(IS_KINEMATIC, manual_move_offset, current_position.e) += diff;
         manual_move_to_current(E_AXIS
-          #if E_MANUAL > 1
+          #if MULTI_MANUAL
             , eindex
           #endif
         );
       ui.encoderPosition = 0;
     }
     if (ui.should_draw()) {
-      #if E_MANUAL > 1
+      #if MULTI_MANUAL
         MenuItemBase::init(eindex);
       #endif
       MenuEditItemBase::draw_edit_screen(
-        GET_TEXT(
-          #if E_MANUAL > 1
-            MSG_MOVE_EN
-          #else
-            MSG_MOVE_E
-          #endif
-        ),
+        GET_TEXT(TERN(MULTI_MANUAL, MSG_MOVE_EN, MSG_MOVE_E)),
         ftostr41sign(current_position.e
-          #if IS_KINEMATIC
-            + manual_move_offset
-          #endif
-          #if ENABLED(MANUAL_E_MOVES_RELATIVE)
-            - manual_move_e_origin
-          #endif
+          + TERN0(IS_KINEMATIC, manual_move_offset)
+          - TERN0(MANUAL_E_MOVES_RELATIVE, manual_move_e_origin)
         )
       );
     } // should_draw
     EDIT_ITEM(bool, MSG_LCD_SOFT_ENDSTOPS, &soft_endstops_enabled);
   #endif
 
-  if (true
-    #if IS_KINEMATIC || ENABLED(NO_MOTION_BEFORE_HOMING)
-      && all_axes_homed()
-    #endif
-  ) {
+  if (NONE(IS_KINEMATIC, NO_MOTION_BEFORE_HOMING) || all_axes_homed()) {
     if (TERN1(DELTA, current_position.z <= delta_clip_start_height)) {
       SUBMENU(MSG_MOVE_X, []{ _menu_move_distance(X_AXIS, lcd_move_x); });
       SUBMENU(MSG_MOVE_Y, []{ _menu_move_distance(Y_AXIS, lcd_move_y); });
         SUBMENU_MOVE_E(2);
       #endif
 
-    #elif E_MANUAL > 1
+    #elif MULTI_MANUAL
 
       // Independent extruders with one E-stepper per hotend
       LOOP_L_N(n, E_MANUAL) SUBMENU_MOVE_E(n);

Marlin/src/lcd/ultralcd.cpp

     float manual_move_offset = 0;
   #endif
 
-  #if E_MANUAL > 1
+  #if MULTI_MANUAL
     int8_t MarlinUI::manual_move_e_index = 0;
   #endif
 

Marlin/src/lcd/ultralcd.h

   #define HAS_SLOW_BUTTONS 1
 #endif
 
+#if E_MANUAL > 1
+  #define MULTI_MANUAL 1
+#endif
+
 #if HAS_SPI_LCD
 
   #include "../MarlinCore.h"
     static void save_previous_screen();
 
     // goto_previous_screen and go_back may also be used as menu item callbacks
-    #if ENABLED(TURBO_BACK_MENU_ITEM)
-      static void _goto_previous_screen(const bool is_back);
-      static inline void goto_previous_screen() { _goto_previous_screen(false); }
-      static inline void go_back()              { _goto_previous_screen(true); }
-    #else
-      static void _goto_previous_screen();
-      FORCE_INLINE static void goto_previous_screen() { _goto_previous_screen(); }
-      FORCE_INLINE static void go_back()              { _goto_previous_screen(); }
-    #endif
+    static void _goto_previous_screen(TERN_(TURBO_BACK_MENU_ITEM, const bool is_back));
+    static inline void goto_previous_screen() { _goto_previous_screen(TERN_(TURBO_BACK_MENU_ITEM, false)); }
+    static inline void go_back()              { _goto_previous_screen(TERN_(TURBO_BACK_MENU_ITEM, true)); }
 
     static void return_to_status();
     static inline bool on_status_screen() { return currentScreen == status_screen; }
     #endif
 
     FORCE_INLINE static void defer_status_screen(const bool defer=true) {
-      #if LCD_TIMEOUT_TO_STATUS
-        defer_return_to_status = defer;
-      #else
-        UNUSED(defer);
-      #endif
+      TERN(LCD_TIMEOUT_TO_STATUS, defer_return_to_status = defer, UNUSED(defer));
     }
 
     static inline void goto_previous_screen_no_defer() {
 
     static uint32_t encoderPosition;
 
-    #if ENABLED(REVERSE_ENCODER_DIRECTION)
-      #define ENCODERBASE -1
-    #else
-      #define ENCODERBASE +1
-    #endif
+    #define ENCODERBASE (TERN(REVERSE_ENCODER_DIRECTION, -1, +1))
 
     #if EITHER(REVERSE_MENU_DIRECTION, REVERSE_SELECT_DIRECTION)
       static int8_t encoderDirection;

Marlin/src/module/planner.h

     static constexpr uint8_t extruder = 0;
   #endif
 
-  #if ENABLED(MIXING_EXTRUDER)
-    MIXER_BLOCK_FIELD;                      // Normalized color for the mixing steppers
-  #endif
+  TERN_(MIXING_EXTRUDER, MIXER_BLOCK_FIELD); // Normalized color for the mixing steppers
 
   // Settings for the trapezoid generator
   uint32_t accelerate_until,                // The index of the step event on which to stop acceleration