Fix default override model value

src/vs/workbench/contrib/preferences/browser/settingsEditorSettingIndicators.ts

@@ -122,7 +122,7 @@ export class SettingsTreeIndicatorsLabel {
 
 	updateDefaultOverrideIndicator(element: SettingsTreeSettingElement) {
 		this.defaultOverrideIndicatorElement.style.display = 'none';
-		const defaultValueSource = element.setting.defaultValueSource;
+		const defaultValueSource = element.defaultValueSource;
 		if (defaultValueSource) {
 			this.defaultOverrideIndicatorElement.style.display = 'inline';
 			if (typeof defaultValueSource !== 'string' && defaultValueSource.id !== element.setting.extensionInfo?.id) {
@@ -157,8 +157,8 @@ export function getIndicatorsLabelAriaLabel(element: SettingsTreeSettingElement,
 	}
 
 	// Add default override indicator text
-	if (element.setting.defaultValueSource) {
-		const defaultValueSource = element.setting.defaultValueSource;
+	if (element.defaultValueSource) {
+		const defaultValueSource = element.defaultValueSource;
 		if (typeof defaultValueSource !== 'string' && defaultValueSource.id !== element.setting.extensionInfo?.id) {
 			const extensionSource = defaultValueSource.displayName ?? defaultValueSource.id;
 			ariaLabelSections.push(localize('defaultOverriddenDetails', "Default setting value overridden by {0}", extensionSource));

src/vs/workbench/contrib/preferences/browser/settingsTree.ts

@@ -1115,7 +1115,7 @@ export class SettingComplexRenderer extends AbstractSettingRenderer implements I
 
 		template.elementDisposables.add(template.button.onDidClick(() => {
 			if (isLanguageTagSetting) {
-				this._onApplyFilter.fire(`@${LANGUAGE_SETTING_TAG}:${plainKey}`);
+				this._onApplyFilter.fire(`@${LANGUAGE_SETTING_TAG}${plainKey}`);
 			} else {
 				this._onDidOpenSettings.fire(dataElement.setting.key);
 			}

src/vs/workbench/contrib/preferences/browser/settingsTreeModels.ts

@@ -18,7 +18,7 @@ import { FOLDER_SCOPES, WORKSPACE_SCOPES, REMOTE_MACHINE_SCOPES, LOCAL_MACHINE_S
 import { IJSONSchema } from 'vs/base/common/jsonSchema';
 import { Disposable } from 'vs/base/common/lifecycle';
 import { Emitter } from 'vs/base/common/event';
-import { ConfigurationScope, EditPresentationTypes, Extensions, IConfigurationRegistry } from 'vs/platform/configuration/common/configurationRegistry';
+import { ConfigurationScope, EditPresentationTypes, Extensions, IConfigurationRegistry, IExtensionInfo } from 'vs/platform/configuration/common/configurationRegistry';
 import { ILanguageService } from 'vs/editor/common/languages/language';
 import { Registry } from 'vs/platform/registry/common/platform';
 
@@ -129,6 +129,12 @@ export class SettingsTreeSettingElement extends SettingsTreeElement {
 	 */
 	defaultValue?: any;
 
+	/**
+	 * The source of the default value to display.
+	 * This value also accounts for extension-contributed language-specific default value overrides.
+	 */
+	defaultValueSource: string | IExtensionInfo | undefined;
+
 	/**
 	 * Whether the setting is configured in the selected scope.
 	 */
@@ -146,7 +152,12 @@ export class SettingsTreeSettingElement extends SettingsTreeElement {
 
 	tags?: Set<string>;
 	overriddenScopeList: string[] = [];
+
+	/**
+	 * For each language that contributes setting values or default overrides, we can see those values here.
+	 */
 	languageOverrideValues: Map<string, IConfigurationValue<unknown>> = new Map<string, IConfigurationValue<unknown>>();
+
 	description!: string;
 	valueType!: SettingValueType;
 
@@ -219,6 +230,10 @@ export class SettingsTreeSettingElement extends SettingsTreeElement {
 			}
 		}
 
+		// The user might have added, removed, or modified a language filter,
+		// so we reset the default value source to the non-language-specific default value source for now.
+		this.defaultValueSource = this.setting.nonLanguageSpecificDefaultValueSource;
+
 		if (inspected.policyValue) {
 			this.hasPolicyValue = true;
 			isConfigured = false; // The user did not manually configure the setting themselves.
@@ -236,7 +251,7 @@ export class SettingsTreeSettingElement extends SettingsTreeElement {
 			const registryValues = Registry.as<IConfigurationRegistry>(Extensions.Configuration).getConfigurationDefaultsOverrides();
 			const overrideValueSource = registryValues.get(`[${languageSelector}]`)?.valuesSources?.get(this.setting.key);
 			if (overrideValueSource) {
-				this.setting.defaultValueSource = overrideValueSource;
+				this.defaultValueSource = overrideValueSource;
 			}
 		} else {
 			this.scopeValue = isConfigured && inspected[targetSelector];

src/vs/workbench/services/preferences/common/preferences.ts

@@ -87,7 +87,7 @@ export interface ISetting {
 	enumItemLabels?: string[];
 	allKeysAreBoolean?: boolean;
 	editPresentation?: EditPresentationTypes;
-	defaultValueSource?: string | IExtensionInfo;
+	nonLanguageSpecificDefaultValueSource?: string | IExtensionInfo;
 	isLanguageTagSetting?: boolean;
 	categoryOrder?: number;
 	categoryLabel?: string;

src/vs/workbench/services/preferences/common/preferencesModels.ts

@@ -751,7 +751,7 @@ export class DefaultSettings extends Disposable {
 					allKeysAreBoolean,
 					editPresentation: prop.editPresentation,
 					order: prop.order,
-					defaultValueSource,
+					nonLanguageSpecificDefaultValueSource: defaultValueSource,
 					isLanguageTagSetting,
 					categoryLabel,
 					categoryOrder