From f8d84814e079bdca892c1c2cac75c53baa96f20b Mon Sep 17 00:00:00 2001
From: meinzzzz <lukas.geiselhart35@gmail.com>
Date: Wed, 26 Nov 2025 23:02:34 +0100
Subject: [PATCH] Fix differential d problems

---
 .../src/ui/mathliveinputview.ts               | 23 +++++++++++++++----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/packages/ckeditor5-math/src/ui/mathliveinputview.ts b/packages/ckeditor5-math/src/ui/mathliveinputview.ts
index a3863077c..f761be787 100644
--- a/packages/ckeditor5-math/src/ui/mathliveinputview.ts
+++ b/packages/ckeditor5-math/src/ui/mathliveinputview.ts
@@ -8,7 +8,8 @@ interface MathFieldElement extends HTMLElement {
     value: string;
     readOnly: boolean;
     mathVirtualKeyboardPolicy: string;
-
+    // Interface includes the shortcuts property
+    inlineShortcuts: Record<string, string>;
 }
 
 /**
@@ -56,11 +57,23 @@ export default class MathLiveInputView extends View {
         // 2. Configure Options
         mathfield.mathVirtualKeyboardPolicy = 'manual';
 
-        // Disable sounds
+        //Disable differential D
+        mathfield.addEventListener( 'mount', () => {
+            mathfield.inlineShortcuts = {
+                ...mathfield.inlineShortcuts, // Safe to read now
+                dx: 'dx',
+                dy: 'dy',
+                dt: 'dt'
+            };
+        } );
+
+
+        // Disable sounds safely
         const MathfieldConstructor = customElements.get( 'math-field' );
         if ( MathfieldConstructor ) {
-            ( MathfieldConstructor as any ).soundsDirectory = null;
-            ( MathfieldConstructor as any ).plonkSound = null;
+            const proto = MathfieldConstructor as any;
+            if ( proto.soundsDirectory !== null ) proto.soundsDirectory = null;
+            if ( proto.plonkSound !== null ) proto.plonkSound = null;
         }
 
         // 3. Set Initial State
@@ -84,7 +97,7 @@ export default class MathLiveInputView extends View {
             mathfield.readOnly = nextValue;
         } );
 
-        // 6. Mount
+        // 6. Mount to the wrapper view
         this.element?.appendChild( mathfield );
         this.mathfield = mathfield;
     }