Prevent SDCARD_SORT_ALPHA from exploding

Marlin/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/default/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/AlephObjects/TAZ4/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/Anet/A6/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing
@@ -621,7 +623,7 @@
  */
 //#define BABYSTEPPING
 #if ENABLED(BABYSTEPPING)
-  //#define BABYSTEP_XY            // Also enable X/Y Babystepping. Not supported on DELTA!
+  //#define BABYSTEP_XY              // Also enable X/Y Babystepping. Not supported on DELTA!
   #define BABYSTEP_INVERT_Z false    // Change if Z babysteps should go the other way
   #define BABYSTEP_MULTIPLICATOR 100 // Babysteps are very small. Increase for faster motion.
   //#define BABYSTEP_ZPROBE_OFFSET   // Enable to combine M851 and Babystepping

Marlin/src/config/examples/Anet/A8/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/BQ/Hephestos/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/BQ/Hephestos_2/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/BQ/WITBOX/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/Cartesio/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/Creality/CR-10/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES true   // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing
@@ -621,10 +623,10 @@
  */
 #define BABYSTEPPING
 #if ENABLED(BABYSTEPPING)
-  //#define BABYSTEP_XY            // Also enable X/Y Babystepping. Not supported on DELTA!
+  //#define BABYSTEP_XY              // Also enable X/Y Babystepping. Not supported on DELTA!
-  #define BABYSTEP_INVERT_Z false  // Change if Z babysteps should go the other way
+  #define BABYSTEP_INVERT_Z false    // Change if Z babysteps should go the other way
-  #define BABYSTEP_MULTIPLICATOR 10 // Babysteps are very small. Increase for faster motion.
+  #define BABYSTEP_MULTIPLICATOR 10  // Babysteps are very small. Increase for faster motion.
-  //#define BABYSTEP_ZPROBE_OFFSET // Enable to combine M851 and Babystepping
+  //#define BABYSTEP_ZPROBE_OFFSET   // Enable to combine M851 and Babystepping
   #define DOUBLECLICK_FOR_Z_BABYSTEPPING // Double-click on the Status Screen for Z Babystepping.
   #define DOUBLECLICK_MAX_INTERVAL 1250 // Maximum interval between clicks, in milliseconds.
                                         // Note: Extra time may be added to mitigate controller latency.

Marlin/src/config/examples/Felix/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/Folger Tech/i3-2020/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/Infitary/i3-M508/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/Malyan/M150/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/Mks/Sbase/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/RigidBot/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/SCARA/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/Sanguinololu/Configuration_adv.h

@@ -520,6 +520,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/TinyBoy2/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/Velleman/K8200/Configuration_adv.h

@@ -544,6 +544,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/Velleman/K8400/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h

@@ -533,6 +533,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h

@@ -533,6 +533,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/delta/generic/Configuration_adv.h

@@ -533,6 +533,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/delta/kossel_mini/Configuration_adv.h

@@ -533,6 +533,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/delta/kossel_pro/Configuration_adv.h

@@ -538,6 +538,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/delta/kossel_xl/Configuration_adv.h

@@ -533,6 +533,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/gCreate/gMax1.5+/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/makibox/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/tvrrug/Round2/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/config/examples/wt150/Configuration_adv.h

@@ -531,6 +531,8 @@
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
     #define SDSORT_DYNAMIC_RAM false  // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
+    #define SDSORT_CACHE_VFATS 2      // Maximum number of 13-byte VFAT entries to use for sorting.
+                                      // Note: Only affects SCROLL_LONG_FILENAMES with SDSORT_CACHE_NAMES but not SDSORT_DYNAMIC_RAM.
   #endif
 
   // Show a progress bar on HD44780 LCDs for SD printing

Marlin/src/inc/SanityCheck.h

@@ -301,6 +301,16 @@ static_assert(X_MAX_LENGTH >= X_BED_SIZE && Y_MAX_LENGTH >= Y_BED_SIZE,
       #error "SDSORT_CACHE_NAMES requires SDSORT_USES_RAM (which reads the directory into RAM)."
     #endif
   #endif
+
+  #if ENABLED(SDSORT_CACHE_NAMES) && DISABLED(SDSORT_DYNAMIC_RAM)
+    #if SDSORT_CACHE_VFATS < 2
+      #error "SDSORT_CACHE_VFATS must be 2 or greater!"
+    #elif SDSORT_CACHE_VFATS > MAX_VFAT_ENTRIES
+      #undef SDSORT_CACHE_VFATS
+      #define SDSORT_CACHE_VFATS MAX_VFAT_ENTRIES
+      #warning "SDSORT_CACHE_VFATS was reduced to MAX_VFAT_ENTRIES!"
+    #endif
+  #endif
 #endif
 
 /**

Marlin/src/sd/cardreader.cpp

@@ -704,7 +704,7 @@ void CardReader::updir() {
             sortnames = new char*[fileCnt];
           #endif
         #elif ENABLED(SDSORT_USES_STACK)
-          char sortnames[fileCnt][LONG_FILENAME_LENGTH];
+          char sortnames[fileCnt][SORTED_LONGNAME_MAXLEN];
         #endif
 
         // Folder sorting needs 1 bit per entry for flags.
@@ -743,7 +743,12 @@ void CardReader::updir() {
               #endif
             #else
               // Copy filenames into the static array
-              strcpy(sortnames[i], LONGEST_FILENAME);
+              #if SORTED_LONGNAME_MAXLEN != LONG_FILENAME_LENGTH
+                strncpy(sortnames[i], LONGEST_FILENAME, SORTED_LONGNAME_MAXLEN);
+                sortnames[i][SORTED_LONGNAME_MAXLEN - 1] = '\0';
+              #else
+                strcpy(sortnames[i], SORTED_LONGNAME_MAXLEN);
+              #endif
               #if ENABLED(SDSORT_CACHE_NAMES)
                 strcpy(sortshort[i], filename);
               #endif
@@ -834,12 +839,21 @@ void CardReader::updir() {
           #if ENABLED(SDSORT_DYNAMIC_RAM)
             sortnames = new char*[1];
             sortnames[0] = strdup(LONGEST_FILENAME); // malloc
-            sortshort = new char*[1];
+            #if ENABLED(SDSORT_CACHE_NAMES)
-            sortshort[0] = strdup(filename);         // malloc
+              sortshort = new char*[1];
+              sortshort[0] = strdup(filename);       // malloc
+            #endif
             isDir = new uint8_t[1];
           #else
-            strcpy(sortnames[0], LONGEST_FILENAME);
+            #if SORTED_LONGNAME_MAXLEN != LONG_FILENAME_LENGTH
-            strcpy(sortshort[0], filename);
+              strncpy(sortnames[0], LONGEST_FILENAME, SORTED_LONGNAME_MAXLEN);
+              sortnames[0][SORTED_LONGNAME_MAXLEN - 1] = '\0';
+            #else
+              strcpy(sortnames[0], SORTED_LONGNAME_MAXLEN);
+            #endif
+            #if ENABLED(SDSORT_CACHE_NAMES)
+              strcpy(sortshort[0], filename);
+            #endif
           #endif
           isDir[0] = filenameIsDir ? 0x01 : 0x00;
         #endif

Marlin/src/sd/cardreader.h

@@ -108,6 +108,12 @@ private:
       uint8_t sort_order[SDSORT_LIMIT];
     #endif
 
+    #if ENABLED(SDSORT_USES_RAM) && ENABLED(SDSORT_CACHE_NAMES) && DISABLED(SDSORT_DYNAMIC_RAM)
+      #define SORTED_LONGNAME_MAXLEN ((SDSORT_CACHE_VFATS) * (FILENAME_LENGTH) + 1)
+    #else
+      #define SORTED_LONGNAME_MAXLEN LONG_FILENAME_LENGTH
+    #endif
+
     // Cache filenames to speed up SD menus.
     #if ENABLED(SDSORT_USES_RAM)
 
@@ -117,10 +123,10 @@ private:
           char **sortshort, **sortnames;
         #else
           char sortshort[SDSORT_LIMIT][FILENAME_LENGTH];
-          char sortnames[SDSORT_LIMIT][LONG_FILENAME_LENGTH];
+          char sortnames[SDSORT_LIMIT][SORTED_LONGNAME_MAXLEN];
         #endif
       #elif DISABLED(SDSORT_USES_STACK)
-        char sortnames[SDSORT_LIMIT][LONG_FILENAME_LENGTH];
+        char sortnames[SDSORT_LIMIT][SORTED_LONGNAME_MAXLEN];
       #endif
 
       // Folder sorting uses an isDir array when caching items.