message: launch a program in multiroot
diff: @@ -648,9 +648,7 @@ export function isArrayOfString(x: any): x is string[] {
  }
  export function isNullOrUndefined(x?: any): boolean {
  - // Double equals provides the correct answer for 'null' and 'undefined'
  - // http://www.ecma-international.org/ecma-262/6.0/index.html#sec-abstract-equality-comparison
  - return x === null;
  + return (x === null || x === undefined);
  }
  export function isWorkspaceFolder(x?: any): boolean {
  