diff --git a/src/vs/base/common/glob.ts b/src/vs/base/common/glob.ts
index cc14eea9d51..fb9ce79e05d 100644
--- a/src/vs/base/common/glob.ts
+++ b/src/vs/base/common/glob.ts
@@ -16,6 +16,11 @@ export interface IExpression {
 	[pattern: string]: boolean | SiblingClause | any;
 }
 
+export interface IRelativePattern {
+	base: string;
+	pattern: string;
+}
+
 export function getEmptyExpression(): IExpression {
 	return Object.create(null);
 }
@@ -28,6 +33,8 @@ export interface SiblingClause {
 	when: string;
 }
 
+const GLOBSTAR = '**';
+const GLOB_SPLIT = '/';
 const PATH_REGEX = '[/\\\\]';		// any slash or backslash
 const NO_PATH_REGEX = '[^/\\\\]';	// any non-slash and non-backslash
 const ALL_FORWARD_SLASHES = /\//g;
@@ -103,10 +110,10 @@ function parseRegExp(pattern: string): string {
 	let regEx = '';
 
 	// Split up into segments for each slash found
-	let segments = splitGlobAware(pattern, '/');
+	let segments = splitGlobAware(pattern, GLOB_SPLIT);
 
 	// Special case where we only have globstars
-	if (segments.every(s => s === '**')) {
+	if (segments.every(s => s === GLOBSTAR)) {
 		regEx = '.*';
 	}
 
@@ -116,7 +123,7 @@ function parseRegExp(pattern: string): string {
 		segments.forEach((segment, index) => {
 
 			// Globstar is special
-			if (segment === '**') {
+			if (segment === GLOBSTAR) {
 
 				// if we have more than one globstar after another, just ignore it
 				if (!previousSegmentWasGlobStar) {
@@ -207,7 +214,7 @@ function parseRegExp(pattern: string): string {
 			}
 
 			// Tail: Add the slash we had split on if there is more to come and the next one is not a globstar
-			if (index < segments.length - 1 && segments[index + 1] !== '**') {
+			if (index < segments.length - 1 && segments[index + 1] !== GLOBSTAR) {
 				regEx += PATH_REGEX;
 			}
 
@@ -264,11 +271,39 @@ const NULL = function (): string {
 	return null;
 };
 
-function parsePattern(pattern: string, options: IGlobOptions): ParsedStringPattern {
-	if (!pattern) {
+function toAbsolutePattern(relativePattern: IRelativePattern | string): string {
+
+	// Without a base URI, best we can do is add '**' to the pattern
+	if (typeof relativePattern === 'string') {
+		if (relativePattern.indexOf(GLOBSTAR) !== 0) {
+			relativePattern = GLOBSTAR + GLOB_SPLIT + strings.ltrim(relativePattern, GLOB_SPLIT);
+		}
+
+		return relativePattern;
+	}
+
+	// Guard against null/undefined
+	if (!relativePattern) {
+		return undefined;
+	}
+
+	// With a base URI, we can append the path to the relative glob as prefix
+	return relativePattern.base + GLOB_SPLIT + strings.ltrim(relativePattern.pattern, GLOB_SPLIT);
+}
+
+function parsePattern(arg1: string | IRelativePattern, options: IGlobOptions): ParsedStringPattern {
+	if (!arg1) {
 		return NULL;
 	}
 
+	// Handle IRelativePattern
+	let pattern: string;
+	if (typeof arg1 !== 'string') {
+		pattern = toAbsolutePattern(arg1.pattern);
+	} else {
+		pattern = arg1;
+	}
+
 	// Whitespace trimming
 	pattern = pattern.trim();
 
@@ -276,7 +311,7 @@ function parsePattern(pattern: string, options: IGlobOptions): ParsedStringPatte
 	const patternKey = `${pattern}_${!!options.trimForExclusions}`;
 	let parsedPattern = CACHE.get(patternKey);
 	if (parsedPattern) {
-		return parsedPattern;
+		return wrapRelativePattern(parsedPattern, pattern);
 	}
 
 	// Check for Trivias
@@ -304,7 +339,21 @@ function parsePattern(pattern: string, options: IGlobOptions): ParsedStringPatte
 	// Cache
 	CACHE.set(patternKey, parsedPattern);
 
-	return parsedPattern;
+	return wrapRelativePattern(parsedPattern, pattern);
+}
+
+function wrapRelativePattern(parsedPattern: ParsedStringPattern, arg2: string | IRelativePattern): ParsedStringPattern {
+	if (typeof arg2 === 'string') {
+		return parsedPattern;
+	}
+
+	return function (path, basename) {
+		if (!paths.isEqualOrParent(path, arg2.base)) {
+			return null;
+		}
+
+		return parsedPattern(path, basename);
+	};
 }
 
 function trimForExclusions(pattern: string, options: IGlobOptions): string {
@@ -395,9 +444,9 @@ function toRegExp(pattern: string): ParsedStringPattern {
  * - simple brace expansion ({js,ts} => js or ts)
  * - character ranges (using [...])
  */
-export function match(pattern: string, path: string): boolean;
+export function match(pattern: string | IRelativePattern, path: string): boolean;
 export function match(expression: IExpression, path: string, siblingsFn?: () => string[]): string /* the matching pattern */;
-export function match(arg1: string | IExpression, path: string, siblingsFn?: () => string[]): any {
+export function match(arg1: string | IExpression | IRelativePattern, path: string, siblingsFn?: () => string[]): any {
 	if (!arg1 || !path) {
 		return false;
 	}
@@ -413,16 +462,16 @@ export function match(arg1: string | IExpression, path: string, siblingsFn?: ()
  * - simple brace expansion ({js,ts} => js or ts)
  * - character ranges (using [...])
  */
-export function parse(pattern: string, options?: IGlobOptions): ParsedPattern;
+export function parse(pattern: string | IRelativePattern, options?: IGlobOptions): ParsedPattern;
 export function parse(expression: IExpression, options?: IGlobOptions): ParsedExpression;
-export function parse(arg1: string | IExpression, options: IGlobOptions = {}): any {
+export function parse(arg1: string | IExpression | IRelativePattern, options: IGlobOptions = {}): any {
 	if (!arg1) {
 		return FALSE;
 	}
 
 	// Glob with String
-	if (typeof arg1 === 'string') {
-		const parsedPattern = parsePattern(arg1, options);
+	if (typeof arg1 === 'string' || (arg1 as IRelativePattern).base) {
+		const parsedPattern = parsePattern(arg1 as string | IRelativePattern, options);
 		if (parsedPattern === NULL) {
 			return FALSE;
 		}
diff --git a/src/vs/base/test/node/glob.test.ts b/src/vs/base/test/node/glob.test.ts
index 1e3183171bd..1c87c114c4a 100644
--- a/src/vs/base/test/node/glob.test.ts
+++ b/src/vs/base/test/node/glob.test.ts
@@ -884,4 +884,35 @@ suite('Glob', () => {
 		// Later expressions take precedence
 		assert.deepEqual(glob.mergeExpressions({ 'a': true, 'b': false, 'c': true }, { 'a': false, 'b': true }), { 'a': false, 'b': true, 'c': true });
 	});
+
+	test('relative pattern', function () {
+		let p: glob.IRelativePattern = { base: '/DNXConsoleApp', pattern: '**/*.cs' };
+
+		assert(glob.match(p, '/DNXConsoleApp/Program.cs'));
+		assert(glob.match(p, '/DNXConsoleApp/foo/Program.cs'));
+		assert(!glob.match(p, '/DNXConsoleApp/foo/Program.ts'));
+		assert(!glob.match(p, '/other/DNXConsoleApp/foo/Program.ts'));
+
+		p = { base: 'C:\\DNXConsoleApp', pattern: '**/*.cs' };
+		assert(glob.match(p, 'C:\\DNXConsoleApp\\Program.cs'));
+		assert(glob.match(p, 'C:\\DNXConsoleApp\\foo\\Program.cs'));
+		assert(!glob.match(p, 'C:\\DNXConsoleApp\\foo\\Program.ts'));
+		assert(!glob.match(p, 'C:\\other\\DNXConsoleApp\\foo\\Program.ts'));
+
+		assert(glob.match(p, 'C:/DNXConsoleApp/Program.cs'));
+		assert(glob.match(p, 'C:/DNXConsoleApp/foo/Program.cs'));
+		assert(!glob.match(p, 'C:/DNXConsoleApp/foo/Program.ts'));
+		assert(!glob.match(p, 'C:/other/DNXConsoleApp/foo/Program.ts'));
+
+		p = { base: 'C:/DNXConsoleApp', pattern: '**/*.cs' };
+		assert(glob.match(p, 'C:\\DNXConsoleApp\\Program.cs'));
+		assert(glob.match(p, 'C:\\DNXConsoleApp\\foo\\Program.cs'));
+		assert(!glob.match(p, 'C:\\DNXConsoleApp\\foo\\Program.ts'));
+		assert(!glob.match(p, 'C:\\other\\DNXConsoleApp\\foo\\Program.ts'));
+
+		assert(glob.match(p, 'C:/DNXConsoleApp/Program.cs'));
+		assert(glob.match(p, 'C:/DNXConsoleApp/foo/Program.cs'));
+		assert(!glob.match(p, 'C:/DNXConsoleApp/foo/Program.ts'));
+		assert(!glob.match(p, 'C:/other/DNXConsoleApp/foo/Program.ts'));
+	});
 });
\ No newline at end of file
diff --git a/src/vs/editor/common/modes/languageSelector.ts b/src/vs/editor/common/modes/languageSelector.ts
index 335e08e8b2e..356f454ecf4 100644
--- a/src/vs/editor/common/modes/languageSelector.ts
+++ b/src/vs/editor/common/modes/languageSelector.ts
@@ -6,12 +6,12 @@
 'use strict';
 
 import URI from 'vs/base/common/uri';
-import { match as matchGlobPattern } from 'vs/base/common/glob'; // TODO@Alex
+import { match as matchGlobPattern, IRelativePattern } from 'vs/base/common/glob'; // TODO@Alex
 
 export interface LanguageFilter {
 	language?: string;
 	scheme?: string;
-	pattern?: string;
+	pattern?: string | IRelativePattern;
 }
 
 export type LanguageSelector = string | LanguageFilter | (string | LanguageFilter)[];
diff --git a/src/vs/vscode.d.ts b/src/vs/vscode.d.ts
index 3ec9e869fd4..4b01c762c7e 100644
--- a/src/vs/vscode.d.ts
+++ b/src/vs/vscode.d.ts
@@ -1658,6 +1658,31 @@ declare module 'vscode' {
 		validateInput?(value: string): string | undefined | null;
 	}
 
+	class RelativePattern {
+
+		/**
+		 * A base file path to which the pattern will be matched against relatively.
+		 */
+		base: string;
+
+		/**
+		 * A file glob pattern like `*.{ts,js}` that will be matched on file paths
+		 * relative to the base path.
+		 *
+		 * Example: Given a base of `/home/work/folder` and a file path of `/home/work/folder/index.js`,
+		 * the file glob pattern will match on `index.js`.
+		 */
+		pattern: string;
+
+		constructor(pattern: string, base: WorkspaceFolder | string)
+	}
+
+	/**
+	 * A file glob pattern to match file paths against. This can either be a glob pattern string
+	 * (like `**∕*.{ts,js}` or `*.{ts,js}`) or a [relative pattern](#RelativePattern).
+	 */
+	export type GlobPattern = string | RelativePattern;
+
 	/**
 	 * A document filter denotes a document by different properties like
 	 * the [language](#TextDocument.languageId), the [scheme](#Uri.scheme) of
@@ -1679,9 +1704,9 @@ declare module 'vscode' {
 		scheme?: string;
 
 		/**
-		 * A glob pattern, like `*.{ts,js}`.
+		 * A [glob pattern](#GlobPattern) that is matched on the absolute path of the document.
 		 */
-		pattern?: string;
+		pattern?: GlobPattern;
 	}
 
 	/**
@@ -1693,7 +1718,6 @@ declare module 'vscode' {
 	 */
 	export type DocumentSelector = string | DocumentFilter | (string | DocumentFilter)[];
 
-
 	/**
 	 * A provider result represents the values a provider, like the [`HoverProvider`](#HoverProvider),
 	 * may return. For once this is the actual result type `T`, like `Hover`, or a thenable that resolves
@@ -4999,30 +5023,34 @@ declare module 'vscode' {
 		/**
 		 * Creates a file system watcher.
 		 *
-		 * A glob pattern that filters the file events must be provided. Optionally, flags to ignore certain
-		 * kinds of events can be provided. To stop listening to events the watcher must be disposed.
+		 * A glob pattern that filters the file events on their absolute path must be provided. Optionally,
+		 * flags to ignore certain kinds of events can be provided. To stop listening to events the watcher must be disposed.
 		 *
 		 * *Note* that only files within the current [workspace folders](#workspace.workspaceFolders) can be watched.
 		 *
-		 * @param globPattern A glob pattern that is applied to the names of created, changed, and deleted files.
+		 * @param globPattern A [glob pattern](#GlobPattern) that is applied to the absolute paths of created, changed,
+		 * and deleted files.
 		 * @param ignoreCreateEvents Ignore when files have been created.
 		 * @param ignoreChangeEvents Ignore when files have been changed.
 		 * @param ignoreDeleteEvents Ignore when files have been deleted.
 		 * @return A new file system watcher instance.
 		 */
-		export function createFileSystemWatcher(globPattern: string, ignoreCreateEvents?: boolean, ignoreChangeEvents?: boolean, ignoreDeleteEvents?: boolean): FileSystemWatcher;
+		export function createFileSystemWatcher(globPattern: GlobPattern, ignoreCreateEvents?: boolean, ignoreChangeEvents?: boolean, ignoreDeleteEvents?: boolean): FileSystemWatcher;
 
 		/**
-		 * Find files in the workspace.
+		 * Find files in the workspace. Will return no results if no [workspace folders](#workspace.workspaceFolders)
+		 * are opened.
 		 *
 		 * @sample `findFiles('**∕*.js', '**∕node_modules∕**', 10)`
-		 * @param include A glob pattern that defines the files to search for.
-		 * @param exclude A glob pattern that defines files and folders to exclude.
+		 * @param include A [glob pattern](#GlobPattern) that defines the files to search for. The glob pattern
+		 * will be matched against the file paths of resulting matches relative to their workspace.
+		 * @param exclude  A [glob pattern](#GlobPattern) that defines files and folders to exclude. The glob pattern
+		 * will be matched against the file paths of resulting matches relative to their workspace.
 		 * @param maxResults An upper-bound for the result.
 		 * @param token A token that can be used to signal cancellation to the underlying search engine.
 		 * @return A thenable that resolves to an array of resource identifiers.
 		 */
-		export function findFiles(include: string, exclude?: string, maxResults?: number, token?: CancellationToken): Thenable<Uri[]>;
+		export function findFiles(include: GlobPattern, exclude?: GlobPattern, maxResults?: number, token?: CancellationToken): Thenable<Uri[]>;
 
 		/**
 		 * Save all dirty files.
diff --git a/src/vs/workbench/api/electron-browser/mainThreadWorkspace.ts b/src/vs/workbench/api/electron-browser/mainThreadWorkspace.ts
index b53bba5f047..12777a683c8 100644
--- a/src/vs/workbench/api/electron-browser/mainThreadWorkspace.ts
+++ b/src/vs/workbench/api/electron-browser/mainThreadWorkspace.ts
@@ -6,7 +6,7 @@
 
 import { isPromiseCanceledError } from 'vs/base/common/errors';
 import URI from 'vs/base/common/uri';
-import { ISearchService, QueryType, ISearchQuery } from 'vs/platform/search/common/search';
+import { ISearchService, QueryType, ISearchQuery, IFolderQuery } from 'vs/platform/search/common/search';
 import { IWorkspaceContextService, WorkbenchState } from 'vs/platform/workspace/common/workspace';
 import { ITextFileService } from 'vs/workbench/services/textfile/common/textfiles';
 import { TPromise } from 'vs/base/common/winjs.base';
@@ -15,6 +15,7 @@ import { IFileService } from 'vs/platform/files/common/files';
 import { IDisposable, dispose } from 'vs/base/common/lifecycle';
 import { extHostNamedCustomer } from 'vs/workbench/api/electron-browser/extHostCustomers';
 import { IExperimentService } from 'vs/platform/telemetry/common/experiments';
+import { IRelativePattern } from 'vs/base/common/glob';
 
 @extHostNamedCustomer(MainContext.MainThreadWorkspace)
 export class MainThreadWorkspace implements MainThreadWorkspaceShape {
@@ -53,17 +54,25 @@ export class MainThreadWorkspace implements MainThreadWorkspaceShape {
 
 	// --- search ---
 
-	$startSearch(include: string, exclude: string, maxResults: number, requestId: number): Thenable<URI[]> {
+	$startSearch(include: string | IRelativePattern, exclude: string | IRelativePattern, maxResults: number, requestId: number): Thenable<URI[]> {
 		const workspace = this._contextService.getWorkspace();
 		if (!workspace.folders.length) {
 			return undefined;
 		}
+
+		let folderQueries: IFolderQuery[];
+		if (typeof include === 'string' || !include) {
+			folderQueries = workspace.folders.map(folder => ({ folder: folder.uri })); // absolute pattern: search across all folders
+		} else {
+			folderQueries = [{ folder: URI.file(include.base) }]; // relative pattern: search only in base folder
+		}
+
 		const query: ISearchQuery = {
-			folderQueries: workspace.folders.map(folder => ({ folder: folder.uri })),
+			folderQueries,
 			type: QueryType.File,
 			maxResults,
-			includePattern: { [include]: true },
-			excludePattern: { [exclude]: true },
+			includePattern: { [typeof include === 'string' ? include : !!include ? include.pattern : undefined]: true },
+			excludePattern: { [typeof exclude === 'string' ? exclude : !!exclude ? exclude.pattern : undefined]: true },
 			useRipgrep: this._experimentService.getExperiments().ripgrepQuickSearch
 		};
 		this._searchService.extendQuery(query);
diff --git a/src/vs/workbench/api/node/extHost.api.impl.ts b/src/vs/workbench/api/node/extHost.api.impl.ts
index b6434280765..845f114f678 100644
--- a/src/vs/workbench/api/node/extHost.api.impl.ts
+++ b/src/vs/workbench/api/node/extHost.api.impl.ts
@@ -610,6 +610,7 @@ export function createApiFactory(
 			TaskScope: extHostTypes.TaskScope,
 			Task: extHostTypes.Task,
 			ConfigurationTarget: extHostTypes.ConfigurationTarget,
+			RelativePattern: extHostTypes.RelativePattern,
 
 			// TODO@JOH,remote
 			FileChangeType: <any>FileChangeType,
diff --git a/src/vs/workbench/api/node/extHost.protocol.ts b/src/vs/workbench/api/node/extHost.protocol.ts
index 92ed6c653db..1c193f868ba 100644
--- a/src/vs/workbench/api/node/extHost.protocol.ts
+++ b/src/vs/workbench/api/node/extHost.protocol.ts
@@ -47,6 +47,7 @@ import { ITreeItem } from 'vs/workbench/common/views';
 import { ThemeColor } from 'vs/platform/theme/common/themeService';
 import { IDisposable } from 'vs/base/common/lifecycle';
 import { SerializedError } from 'vs/base/common/errors';
+import { IRelativePattern } from 'vs/base/common/glob';
 import { IWorkspaceFolderData } from 'vs/platform/workspace/common/workspace';
 import { IStat, IFileChange } from 'vs/platform/files/common/files';
 
@@ -311,7 +312,7 @@ export interface MainThreadTelemetryShape extends IDisposable {
 }
 
 export interface MainThreadWorkspaceShape extends IDisposable {
-	$startSearch(include: string, exclude: string, maxResults: number, requestId: number): Thenable<URI[]>;
+	$startSearch(include: string | IRelativePattern, exclude: string | IRelativePattern, maxResults: number, requestId: number): Thenable<URI[]>;
 	$cancelSearch(requestId: number): Thenable<boolean>;
 	$saveAll(includeUntitled?: boolean): Thenable<boolean>;
 }
diff --git a/src/vs/workbench/api/node/extHostFileSystemEventService.ts b/src/vs/workbench/api/node/extHostFileSystemEventService.ts
index 6038446ffc4..1c5aa2b1e28 100644
--- a/src/vs/workbench/api/node/extHostFileSystemEventService.ts
+++ b/src/vs/workbench/api/node/extHostFileSystemEventService.ts
@@ -6,7 +6,7 @@
 
 import Event, { Emitter } from 'vs/base/common/event';
 import { Disposable } from './extHostTypes';
-import { parse } from 'vs/base/common/glob';
+import { parse, IRelativePattern } from 'vs/base/common/glob';
 import { Uri, FileSystemWatcher as _FileSystemWatcher } from 'vscode';
 import { FileSystemEvents, ExtHostFileSystemEventServiceShape } from './extHost.protocol';
 
@@ -30,7 +30,7 @@ class FileSystemWatcher implements _FileSystemWatcher {
 		return Boolean(this._config & 0b100);
 	}
 
-	constructor(dispatcher: Event<FileSystemEvents>, globPattern: string, ignoreCreateEvents?: boolean, ignoreChangeEvents?: boolean, ignoreDeleteEvents?: boolean) {
+	constructor(dispatcher: Event<FileSystemEvents>, globPattern: string | IRelativePattern, ignoreCreateEvents?: boolean, ignoreChangeEvents?: boolean, ignoreDeleteEvents?: boolean) {
 
 		this._config = 0;
 		if (ignoreCreateEvents) {
@@ -96,7 +96,7 @@ export class ExtHostFileSystemEventService implements ExtHostFileSystemEventServ
 	constructor() {
 	}
 
-	public createFileSystemWatcher(globPattern: string, ignoreCreateEvents?: boolean, ignoreChangeEvents?: boolean, ignoreDeleteEvents?: boolean): _FileSystemWatcher {
+	public createFileSystemWatcher(globPattern: string | IRelativePattern, ignoreCreateEvents?: boolean, ignoreChangeEvents?: boolean, ignoreDeleteEvents?: boolean): _FileSystemWatcher {
 		return new FileSystemWatcher(this._emitter.event, globPattern, ignoreCreateEvents, ignoreChangeEvents, ignoreDeleteEvents);
 	}
 
diff --git a/src/vs/workbench/api/node/extHostTypeConverters.ts b/src/vs/workbench/api/node/extHostTypeConverters.ts
index 22d9b4cacf5..81addd2688b 100644
--- a/src/vs/workbench/api/node/extHostTypeConverters.ts
+++ b/src/vs/workbench/api/node/extHostTypeConverters.ts
@@ -535,4 +535,4 @@ export namespace ProgressLocation {
 		}
 		return undefined;
 	}
-}
+}
\ No newline at end of file
diff --git a/src/vs/workbench/api/node/extHostTypes.ts b/src/vs/workbench/api/node/extHostTypes.ts
index 1db1c7986a9..e6678bfaab4 100644
--- a/src/vs/workbench/api/node/extHostTypes.ts
+++ b/src/vs/workbench/api/node/extHostTypes.ts
@@ -10,6 +10,7 @@ import URI from 'vs/base/common/uri';
 import { illegalArgument } from 'vs/base/common/errors';
 import * as vscode from 'vscode';
 import { isMarkdownString } from 'vs/base/common/htmlContent';
+import { IRelativePattern } from 'vs/base/common/glob';
 
 export class Disposable {
 
@@ -1445,3 +1446,13 @@ export enum ConfigurationTarget {
 
 	WorkspaceFolder = 3
 }
+
+export class RelativePattern implements IRelativePattern {
+	base: string;
+	pattern: string;
+
+	constructor(pattern: string, base: vscode.WorkspaceFolder | string) {
+		this.pattern = pattern;
+		this.base = typeof base === 'string' ? base : base.uri.fsPath;
+	}
+}
\ No newline at end of file
diff --git a/src/vs/workbench/api/node/extHostWorkspace.ts b/src/vs/workbench/api/node/extHostWorkspace.ts
index 7018fd88c07..1d7fd1b940f 100644
--- a/src/vs/workbench/api/node/extHostWorkspace.ts
+++ b/src/vs/workbench/api/node/extHostWorkspace.ts
@@ -14,6 +14,7 @@ import { IWorkspaceData, ExtHostWorkspaceShape, MainContext, MainThreadWorkspace
 import * as vscode from 'vscode';
 import { compare } from 'vs/base/common/strings';
 import { TrieMap } from 'vs/base/common/map';
+import { IRelativePattern } from 'vs/base/common/glob';
 
 class Workspace2 extends Workspace {
 
@@ -156,7 +157,7 @@ export class ExtHostWorkspace implements ExtHostWorkspaceShape {
 
 	// --- search ---
 
-	findFiles(include: string, exclude: string, maxResults?: number, token?: vscode.CancellationToken): Thenable<vscode.Uri[]> {
+	findFiles(include: string | IRelativePattern, exclude: string | IRelativePattern, maxResults?: number, token?: vscode.CancellationToken): Thenable<vscode.Uri[]> {
 		const requestId = ExtHostWorkspace._requestIdPool++;
 		const result = this._proxy.$startSearch(include, exclude, maxResults, requestId);
 		if (token) {