Fixes #69146

src/vs/workbench/services/keybinding/common/macLinuxKeyboardMapper.ts

@@ -967,6 +967,13 @@ export class MacLinuxKeyboardMapper implements IKeyboardMapper {
 		for (let part of keybinding.parts) {
 			chordParts.push(this.simpleKeybindingToScanCodeBinding(part));
 		}
+		return this._toResolvedKeybinding(chordParts);
+	}
+
+	private _toResolvedKeybinding(chordParts: ScanCodeBinding[][]): NativeResolvedKeybinding[] {
+		if (chordParts.length === 0) {
+			return [];
+		}
 		let result: NativeResolvedKeybinding[] = [];
 		this._generateResolvedKeybindings(chordParts, 0, [], result);
 		return result;
@@ -1055,9 +1062,7 @@ export class MacLinuxKeyboardMapper implements IKeyboardMapper {
 
 	public resolveUserBinding(input: (SimpleKeybinding | ScanCodeBinding)[]): ResolvedKeybinding[] {
 		const parts: ScanCodeBinding[][] = input.map(keybinding => this._resolveSimpleUserBinding(keybinding));
-		let result: NativeResolvedKeybinding[] = [];
-		this._generateResolvedKeybindings(parts, 0, [], result);
-		return result;
+		return this._toResolvedKeybinding(parts);
 	}
 
 	private static _charCodeToKb(charCode: number): { keyCode: KeyCode; shiftKey: boolean } | null {

src/vs/workbench/services/keybinding/test/macLinuxFallbackKeyboardMapper.test.ts

@@ -70,6 +70,10 @@ suite('keyboardMapper - MAC fallback', () => {
 		);
 	});
 
+	test('resolveUserBinding empty', () => {
+		assertResolveUserBinding(mapper, [], []);
+	});
+
 	test('resolveUserBinding Cmd+[Comma] Cmd+/', () => {
 		assertResolveUserBinding(
 			mapper, [

src/vs/workbench/services/keybinding/test/macLinuxKeyboardMapper.test.ts

@@ -304,6 +304,10 @@ suite('keyboardMapper - MAC de_ch', () => {
 		);
 	});
 
+	test('resolveUserBinding empty', () => {
+		assertResolveUserBinding(mapper, [], []);
+	});
+
 	test('resolveUserBinding Cmd+[Comma] Cmd+/', () => {
 		assertResolveUserBinding(
 			mapper,

src/vs/workbench/services/keybinding/test/windowsKeyboardMapper.test.ts

@@ -270,6 +270,10 @@ suite('keyboardMapper - WINDOWS de_ch', () => {
 		);
 	});
 
+	test('resolveUserBinding empty', () => {
+		assertResolveUserBinding(mapper, [], []);
+	});
+
 	test('resolveUserBinding Ctrl+[Comma] Ctrl+/', () => {
 		assertResolveUserBinding(
 			mapper, [