Error when checking out a pull request (microsoft#2779)

Author: alexr00

src/common/utils.ts

@@ -171,6 +171,8 @@ export function formatError(e: HookError | any): string {
 		if (e.gitErrorCode) {
 			// known git errors, we should display detailed git error messages.
 			return `${e.message}. Please check git output for more details`;
+		} else if (e.stderr) {
+			return `${e.stderr}. Please check git output for more details`;
 		}
 		return 'Error';
 	}
@@ -225,13 +227,13 @@ export async function promiseFromEvent<T, U>(event: Event<T>, adapter: PromiseAd
 	let subscription: Disposable;
 	return new Promise<U>(
 		(resolve, reject) =>
-			(subscription = event((value: T) => {
-				try {
-					Promise.resolve<U>(adapter(value, resolve as any, reject)).catch(reject);
-				} catch (error) {
-					reject(error);
-				}
-			})),
+		(subscription = event((value: T) => {
+			try {
+				Promise.resolve<U>(adapter(value, resolve as any, reject)).catch(reject);
+			} catch (error) {
+				reject(error);
+			}
+		})),
 	).then(
 		(result: U) => {
 			subscription.dispose();
@@ -416,7 +418,7 @@ export class ConfigKeysIterator implements IKeyIterator<string> {
 	private _from!: number;
 	private _to!: number;
 
-	constructor(private readonly _caseSensitive: boolean = true) {}
+	constructor(private readonly _caseSensitive: boolean = true) { }
 
 	reset(key: string): this {
 		this._value = key;
@@ -464,7 +466,7 @@ export class PathIterator implements IKeyIterator<string> {
 	private _from!: number;
 	private _to!: number;
 
-	constructor(private readonly _splitOnBackslash: boolean = true, private readonly _caseSensitive: boolean = true) {}
+	constructor(private readonly _splitOnBackslash: boolean = true, private readonly _caseSensitive: boolean = true) { }
 
 	reset(key: string): this {
 		this._value = key.replace(/\\$|\/$/, '');
@@ -521,7 +523,7 @@ export class UriIterator implements IKeyIterator<Uri> {
 	private _states: UriIteratorState[] = [];
 	private _stateIdx: number = 0;
 
-	constructor(private readonly _ignorePathCasing: (uri: Uri) => boolean) {}
+	constructor(private readonly _ignorePathCasing: (uri: Uri) => boolean) { }
 
 	reset(key: Uri): this {
 		this._value = key;