🎨 Optional Custom Button description (#22336)

Marlin/src/MarlinCore.cpp

   #if ENABLED(CUSTOM_USER_BUTTONS)
     // Handle a custom user button if defined
     const bool printer_not_busy = !printingIsActive();
-    #define HAS_CUSTOM_USER_BUTTON(N) (PIN_EXISTS(BUTTON##N) && defined(BUTTON##N##_HIT_STATE) && defined(BUTTON##N##_GCODE) && defined(BUTTON##N##_DESC))
-    #define CHECK_CUSTOM_USER_BUTTON(N) do{                            \
+    const millis_t ms = millis();
+    #define HAS_CUSTOM_USER_BUTTON(N) (PIN_EXISTS(BUTTON##N) && defined(BUTTON##N##_HIT_STATE) && defined(BUTTON##N##_GCODE))
+    #define HAS_BETTER_USER_BUTTON(N) HAS_CUSTOM_USER_BUTTON(N) && defined(BUTTON##N##_DESC)
+    #define _CHECK_CUSTOM_USER_BUTTON(N, CODE) do{                     \
       constexpr millis_t CUB_DEBOUNCE_DELAY_##N = 250UL;               \
       static millis_t next_cub_ms_##N;                                 \
       if (BUTTON##N##_HIT_STATE == READ(BUTTON##N##_PIN)               \
         && (ENABLED(BUTTON##N##_WHEN_PRINTING) || printer_not_busy)) { \
-        const millis_t ms = millis();                                  \
         if (ELAPSED(ms, next_cub_ms_##N)) {                            \
           next_cub_ms_##N = ms + CUB_DEBOUNCE_DELAY_##N;               \
-          if (strlen(BUTTON##N##_DESC))                                \
-            LCD_MESSAGEPGM_P(PSTR(BUTTON##N##_DESC));                  \
+          CODE;                                                        \
           queue.inject_P(PSTR(BUTTON##N##_GCODE));                     \
         }                                                              \
       }                                                                \
     }while(0)
 
-    #if HAS_CUSTOM_USER_BUTTON(1)
+    #define CHECK_CUSTOM_USER_BUTTON(N)     _CHECK_CUSTOM_USER_BUTTON(N, NOOP)
+    #define CHECK_BETTER_USER_BUTTON(N) _CHECK_CUSTOM_USER_BUTTON(N, if (strlen(BUTTON##N##_DESC)) LCD_MESSAGEPGM_P(PSTR(BUTTON##N##_DESC)))
+
+    #if HAS_BETTER_USER_BUTTON(1)
+      CHECK_BETTER_USER_BUTTON(1);
+    #elif HAS_CUSTOM_USER_BUTTON(1)
       CHECK_CUSTOM_USER_BUTTON(1);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(2)
+    #if HAS_BETTER_USER_BUTTON(2)
+      CHECK_BETTER_USER_BUTTON(2);
+    #elif HAS_CUSTOM_USER_BUTTON(2)
       CHECK_CUSTOM_USER_BUTTON(2);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(3)
+    #if HAS_BETTER_USER_BUTTON(3)
+      CHECK_BETTER_USER_BUTTON(3);
+    #elif HAS_CUSTOM_USER_BUTTON(3)
       CHECK_CUSTOM_USER_BUTTON(3);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(4)
+    #if HAS_BETTER_USER_BUTTON(4)
+      CHECK_BETTER_USER_BUTTON(4);
+    #elif HAS_CUSTOM_USER_BUTTON(4)
       CHECK_CUSTOM_USER_BUTTON(4);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(5)
+    #if HAS_BETTER_USER_BUTTON(5)
+      CHECK_BETTER_USER_BUTTON(5);
+    #elif HAS_CUSTOM_USER_BUTTON(5)
       CHECK_CUSTOM_USER_BUTTON(5);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(6)
+    #if HAS_BETTER_USER_BUTTON(6)
+      CHECK_BETTER_USER_BUTTON(6);
+    #elif HAS_CUSTOM_USER_BUTTON(6)
       CHECK_CUSTOM_USER_BUTTON(6);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(7)
+    #if HAS_BETTER_USER_BUTTON(7)
+      CHECK_BETTER_USER_BUTTON(7);
+    #elif HAS_CUSTOM_USER_BUTTON(7)
       CHECK_CUSTOM_USER_BUTTON(7);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(8)
+    #if HAS_BETTER_USER_BUTTON(8)
+      CHECK_BETTER_USER_BUTTON(8);
+    #elif HAS_CUSTOM_USER_BUTTON(8)
       CHECK_CUSTOM_USER_BUTTON(8);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(9)
+    #if HAS_BETTER_USER_BUTTON(9)
+      CHECK_BETTER_USER_BUTTON(9);
+    #elif HAS_CUSTOM_USER_BUTTON(9)
       CHECK_CUSTOM_USER_BUTTON(9);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(10)
+    #if HAS_BETTER_USER_BUTTON(10)
+      CHECK_BETTER_USER_BUTTON(10);
+    #elif HAS_CUSTOM_USER_BUTTON(10)
       CHECK_CUSTOM_USER_BUTTON(10);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(11)
+    #if HAS_BETTER_USER_BUTTON(11)
+      CHECK_BETTER_USER_BUTTON(11);
+    #elif HAS_CUSTOM_USER_BUTTON(11)
       CHECK_CUSTOM_USER_BUTTON(11);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(12)
+    #if HAS_BETTER_USER_BUTTON(12)
+      CHECK_BETTER_USER_BUTTON(12);
+    #elif HAS_CUSTOM_USER_BUTTON(12)
       CHECK_CUSTOM_USER_BUTTON(12);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(13)
+    #if HAS_BETTER_USER_BUTTON(13)
+      CHECK_BETTER_USER_BUTTON(13);
+    #elif HAS_CUSTOM_USER_BUTTON(13)
       CHECK_CUSTOM_USER_BUTTON(13);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(14)
+    #if HAS_BETTER_USER_BUTTON(14)
+      CHECK_BETTER_USER_BUTTON(14);
+    #elif HAS_CUSTOM_USER_BUTTON(14)
       CHECK_CUSTOM_USER_BUTTON(14);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(15)
+    #if HAS_BETTER_USER_BUTTON(15)
+      CHECK_BETTER_USER_BUTTON(15);
+    #elif HAS_CUSTOM_USER_BUTTON(15)
       CHECK_CUSTOM_USER_BUTTON(15);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(16)
+    #if HAS_BETTER_USER_BUTTON(16)
+      CHECK_BETTER_USER_BUTTON(16);
+    #elif HAS_CUSTOM_USER_BUTTON(16)
       CHECK_CUSTOM_USER_BUTTON(16);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(17)
+    #if HAS_BETTER_USER_BUTTON(17)
+      CHECK_BETTER_USER_BUTTON(17);
+    #elif HAS_CUSTOM_USER_BUTTON(17)
       CHECK_CUSTOM_USER_BUTTON(17);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(18)
+    #if HAS_BETTER_USER_BUTTON(18)
+      CHECK_BETTER_USER_BUTTON(18);
+    #elif HAS_CUSTOM_USER_BUTTON(18)
       CHECK_CUSTOM_USER_BUTTON(18);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(19)
+    #if HAS_BETTER_USER_BUTTON(19)
+      CHECK_BETTER_USER_BUTTON(19);
+    #elif HAS_CUSTOM_USER_BUTTON(19)
       CHECK_CUSTOM_USER_BUTTON(19);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(20)
+    #if HAS_BETTER_USER_BUTTON(20)
+      CHECK_BETTER_USER_BUTTON(20);
+    #elif HAS_CUSTOM_USER_BUTTON(20)
       CHECK_CUSTOM_USER_BUTTON(20);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(21)
+    #if HAS_BETTER_USER_BUTTON(21)
+      CHECK_BETTER_USER_BUTTON(21);
+    #elif HAS_CUSTOM_USER_BUTTON(21)
       CHECK_CUSTOM_USER_BUTTON(21);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(22)
+    #if HAS_BETTER_USER_BUTTON(22)
+      CHECK_BETTER_USER_BUTTON(22);
+    #elif HAS_CUSTOM_USER_BUTTON(22)
       CHECK_CUSTOM_USER_BUTTON(22);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(23)
+    #if HAS_BETTER_USER_BUTTON(23)
+      CHECK_BETTER_USER_BUTTON(23);
+    #elif HAS_CUSTOM_USER_BUTTON(23)
       CHECK_CUSTOM_USER_BUTTON(23);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(24)
+    #if HAS_BETTER_USER_BUTTON(24)
+      CHECK_BETTER_USER_BUTTON(24);
+    #elif HAS_CUSTOM_USER_BUTTON(24)
       CHECK_CUSTOM_USER_BUTTON(24);
     #endif
-    #if HAS_CUSTOM_USER_BUTTON(25)
+    #if HAS_BETTER_USER_BUTTON(25)
+      CHECK_BETTER_USER_BUTTON(25);
+    #elif HAS_CUSTOM_USER_BUTTON(25)
       CHECK_CUSTOM_USER_BUTTON(25);
     #endif
   #endif