excluded -> included, and property is included by default if 'included' is unspecified

src/vs/editor/common/config/commonEditorConfig.ts

@@ -613,7 +613,7 @@ const editorConfiguration: IConfigurationNode = {
 			'type': 'boolean',
 			'default': EDITOR_DEFAULTS.contribInfo.selectionClipboard,
 			'description': nls.localize('selectionClipboard', "Controls if the Linux primary clipboard should be supported."),
-			'excluded': !platform.isLinux
+			'included': platform.isLinux
 		},
 		'diffEditor.renderSideBySide': {
 			'type': 'boolean',

src/vs/platform/configuration/common/configurationRegistry.ts

@@ -72,7 +72,7 @@ export interface IConfigurationPropertySchema extends IJSONSchema {
 	isExecutable?: boolean;
 	scope?: ConfigurationScope;
 	notMultiRootAdopted?: boolean;
-	excluded?: boolean;
+	included?: boolean;
 }
 
 export interface IConfigurationNode {
@@ -200,8 +200,9 @@ class ConfigurationRegistry implements IConfigurationRegistry {
 					property.scope = scope;
 				}
 
-				// add to properties maps
-				if (properties[key].excluded) {
+				// Add to properties maps
+				// Property is included by default if 'included' is unspecified
+				if (properties[key].hasOwnProperty('included') && !properties[key].included) {
 					this.excludedConfigurationProperties[key] = properties[key];
 					delete properties[key];
 					continue;

src/vs/workbench/electron-browser/main.contribution.ts

@@ -359,32 +359,32 @@ configurationRegistry.registerConfiguration({
 			],
 			'default': 'default',
 			'description': nls.localize('menuBarVisibility', "Control the visibility of the menu bar. A setting of 'toggle' means that the menu bar is hidden and a single press of the Alt key will show it. By default, the menu bar will be visible, unless the window is full screen."),
-			'excluded': !isWindows && !isLinux
+			'included': isWindows || isLinux
 		},
 		'window.enableMenuBarMnemonics': {
 			'type': 'boolean',
 			'default': true,
 			'description': nls.localize('enableMenuBarMnemonics', "If enabled, the main menus can be opened via Alt-key shortcuts. Disabling mnemonics allows to bind these Alt-key shortcuts to editor commands instead."),
-			'excluded': !isWindows && !isLinux
+			'included': isWindows || isLinux
 		},
 		'window.autoDetectHighContrast': {
 			'type': 'boolean',
 			'default': true,
 			'description': nls.localize('autoDetectHighContrast', "If enabled, will automatically change to high contrast theme if Windows is using a high contrast theme, and to dark theme when switching away from a Windows high contrast theme."),
-			'excluded': !isWindows
+			'included': !isWindows
 		},
 		'window.titleBarStyle': {
 			'type': 'string',
 			'enum': ['native', 'custom'],
 			'default': 'custom',
 			'description': nls.localize('titleBarStyle', "Adjust the appearance of the window title bar. Changes require a full restart to apply."),
-			'excluded': !isMacintosh
+			'included': isMacintosh
 		},
 		'window.nativeTabs': {
 			'type': 'boolean',
 			'default': false,
 			'description': nls.localize('window.nativeTabs', "Enables macOS Sierra window tabs. Note that changes require a full restart to apply and that native tabs will disable a custom title bar style if configured."),
-			'excluded': !isMacintosh || parseFloat(os.release()) < 16 // Minimum: macOS Sierra (10.12.x = darwin 16.x)
+			'included': isMacintosh && parseFloat(os.release()) >= 16 // Minimum: macOS Sierra (10.12.x = darwin 16.x)
 		}
 	}
 });

src/vs/workbench/services/keybinding/electron-browser/keybindingService.ts

@@ -582,7 +582,7 @@ const keyboardConfiguration: IConfigurationNode = {
 			'enum': ['code', 'keyCode'],
 			'default': 'code',
 			'description': nls.localize('dispatch', "Controls the dispatching logic for key presses to use either `code` (recommended) or `keyCode`."),
-			'excluded': OS !== OperatingSystem.Macintosh && OS !== OperatingSystem.Linux
+			'included': OS === OperatingSystem.Macintosh || OS === OperatingSystem.Linux
 		}
 	}
 };