Fix './' syntax when using a single-folder workspace

src/vs/workbench/parts/search/browser/searchViewlet.ts

@@ -864,7 +864,7 @@ export class SearchViewlet extends Viewlet {
 		let folderPath = null;
 		const workspace = this.contextService.getWorkspace();
 		if (workspace && resource) {
-			if (workspace.roots.length === 1) {
+			if (this.contextService.hasFolderWorkspace()) {
 				// Show relative path from the root for single-root mode
 				folderPath = paths.relative(workspace.roots[0].fsPath, resource.fsPath);
 				if (folderPath && folderPath !== '.') {

src/vs/workbench/parts/search/common/queryBuilder.ts

@@ -206,11 +206,11 @@ export class QueryBuilder {
 		}
 
 		const workspace = this.workspaceContextService.getWorkspace();
-		if (workspace.roots.length === 1) {
+		if (this.workspaceContextService.hasFolderWorkspace()) {
 			return [paths.normalize(
 				paths.join(workspace.roots[0].fsPath, searchPath))];
 		} else if (searchPath === './') {
-			return []; // ./ or ./**/foo makes sense for single-root but not multiroot
+			return []; // ./ or ./**/foo makes sense for single-folder but not multi-folder workspaces
 		} else {
 			const relativeSearchPathMatch = searchPath.match(/\.\/([^\/]+)(\/.+)?/);
 			if (relativeSearchPathMatch) {

src/vs/workbench/parts/search/test/common/queryBuilder.test.ts

@@ -139,6 +139,7 @@ suite('QueryBuilder', () => {
 		const ROOT_3 = fixPath('/project/root3');
 		const ROOT_3_URI = getUri(ROOT_3);
 		mockWorkspace.roots = [ROOT_1_URI, ROOT_2_URI, ROOT_3_URI];
+		mockWorkspace.configuration = uri.file(fixPath('/config'));
 
 		mockConfigService.setUserConfiguration('search', {
 			useRipgrep: true,
@@ -385,6 +386,7 @@ suite('QueryBuilder', () => {
 		test('relative includes w/two root folders', () => {
 			const ROOT_2 = '/project/root2';
 			mockWorkspace.roots = [ROOT_1_URI, getUri(ROOT_2)];
+			mockWorkspace.configuration = uri.file(fixPath('config'));
 
 			[
 				[
@@ -424,6 +426,7 @@ suite('QueryBuilder', () => {
 			const ROOT_2 = '/project/rootB';
 			const ROOT_3 = '/otherproject/rootB';
 			mockWorkspace.roots = [ROOT_1_URI, getUri(ROOT_2), getUri(ROOT_3)];
+			mockWorkspace.configuration = uri.file(fixPath('/config'));
 
 			[
 				[

src/vs/workbench/test/workbenchTestServices.ts

@@ -97,11 +97,11 @@ export class TestContextService implements IWorkspaceContextService {
 	}
 
 	public hasFolderWorkspace(): boolean {
-		return this.hasWorkspace();
+		return this.workspace && !this.workspace.configuration;
 	}
 
 	public hasMultiFolderWorkspace(): boolean {
-		return false;
+		return this.workspace && !!this.workspace.configuration;
 	}
 
 	public getLegacyWorkspace(): ILegacyWorkspace {