Don't exclude all unless there are no includes at all

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

@@ -205,6 +205,7 @@ export class QueryBuilder {
 		const folderQueries: IFolderQuery[] = [];
 		const foldersToSearch: ResourceMap<IFolderQuery> = new ResourceMap();
 		const includePattern: glob.IExpression = {};
+		let hasIncludedFile = false;
 		files.forEach(file => {
 			if (file.scheme === Schemas.walkThrough) { return; }
 
@@ -216,6 +217,7 @@ export class QueryBuilder {
 
 				let folderQuery = foldersToSearch.get(searchRoot);
 				if (!folderQuery) {
+					hasIncludedFile = true;
 					folderQuery = { folder: searchRoot, includePattern: {} };
 					folderQueries.push(folderQuery);
 					foldersToSearch.set(searchRoot, folderQuery);
@@ -225,6 +227,7 @@ export class QueryBuilder {
 				assertIsDefined(folderQuery.includePattern)[relPath.replace(/\\/g, '/')] = true;
 			} else {
 				if (file.fsPath) {
+					hasIncludedFile = true;
 					includePattern[file.fsPath] = true;
 				}
 			}
@@ -234,7 +237,7 @@ export class QueryBuilder {
 			folderQueries,
 			includePattern,
 			usingSearchPaths: true,
-			excludePattern: folderQueries.length ? undefined : { '**/*': true }
+			excludePattern: hasIncludedFile ? undefined : { '**/*': true }
 		};
 	}