FIX: Escape the ampersand character from Control Scheme dropdown menu on Windows platform (#2050)

* Escape the ampersand character on Windows platform for ControlSchemesMenu

* Update CHANGELOG.md

Author: tspiller

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -22,6 +22,7 @@ however, it has to be formatted properly to pass verification tests.
 - Fixed missing documentation for source generated Input Action Assets. This is now generated as part of the source code generation step when "Generate C# Class" is checked in the importer inspector settings.
 - Fixed pasting into an empty map list raising an exception. [ISXB-1150](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1150)
 - Fixed pasting bindings into empty Input Action asset. [ISXB-1180](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1180)
+- Fixed missing '&' symbol in Control Scheme dropdown on Windows platform. [ISXB-1109](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1109)
 
 ### Changed
 - Added back the InputManager to InputSystem project-wide asset migration code with performance improvement (ISX-2086).

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/InputActionsEditorView.cs

@@ -138,6 +138,18 @@ public override void RedrawUI(ViewState viewState)
             m_SaveButton.SetEnabled(InputEditorUserSettings.autoSaveInputActionAssets == false);
         }
 
+        private string SetupControlSchemeName(string name)
+        {
+            //On Windows the '&' is considered an accelerator character and will always be stripped.
+            //Since the ControlScheme menu isn't creating hotkeys, it can be safely assumed that they are meant to be text
+            //so we want to escape the character for MenuItem
+            if (Application.platform == RuntimePlatform.WindowsEditor)
+            {
+                name = name.Replace("&", "&&");
+            }
+            return name;
+        }
+
         private void SetUpControlSchemesMenu(ViewState viewState)
         {
             m_ControlSchemesToolbar.menu.MenuItems().Clear();
@@ -151,7 +163,7 @@ private void SetUpControlSchemesMenu(ViewState viewState)
                 m_ControlSchemesToolbar.menu.AppendAction("All Control Schemes", _ => SelectControlScheme(-1),
                     viewState.selectedControlSchemeIndex == -1 ? DropdownMenuAction.Status.Checked : DropdownMenuAction.Status.Normal);
                 viewState.controlSchemes.ForEach((scheme, i) =>
-                    m_ControlSchemesToolbar.menu.AppendAction(scheme.name, _ => SelectControlScheme(i),
+                    m_ControlSchemesToolbar.menu.AppendAction(SetupControlSchemeName(scheme.name), _ => SelectControlScheme(i),
                         viewState.selectedControlSchemeIndex == i ? DropdownMenuAction.Status.Checked : DropdownMenuAction.Status.Normal));
                 m_ControlSchemesToolbar.menu.AppendSeparator();
             }