From 7f55974cbb21e5805efd528f4bd7f19068654269 Mon Sep 17 00:00:00 2001
From: Knutwurst <36196269+knutwurst@users.noreply.github.com>
Date: Wed, 3 Jun 2020 08:24:12 +0200
Subject: [PATCH] Allow 1 and 2 byte characters in Touchscreen Display.

---
 Marlin/src/lcd/anycubic_touchscreen.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Marlin/src/lcd/anycubic_touchscreen.cpp b/Marlin/src/lcd/anycubic_touchscreen.cpp
index 6f9fc9c0..c5e68e70 100755
--- a/Marlin/src/lcd/anycubic_touchscreen.cpp
+++ b/Marlin/src/lcd/anycubic_touchscreen.cpp
@@ -598,7 +598,7 @@ void AnycubicTouchscreenClass::Ls()
 
         bool hasInvalidCharacter = false;
         for (unsigned char currentChar = 0; currentChar < strlen(card.longFilename); currentChar++)
-        if (!isAscii(card.longFilename[currentChar])) 
+        if (!isPrintable(card.longFilename[currentChar])) 
         {
           hasInvalidCharacter = true;
           break;