// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-atom
es6id: 21.2.2.8
description: >
  Support for surrogate pairs within patterns match by the "period" Atom
info: |
  The production Atom :: . evaluates as follows:

  1. Let A be the set of all characters except LineTerminator.
  2. Call CharacterSetMatcher(A, false) and return its Matcher result. 

  Runtime Semantics: CharacterSetMatcher Abstract Operation

  1. Return an internal Matcher closure that takes two arguments, a State x and
     a Continuation c, and performs the following steps when evaluated:
     [...]
     d. Let cc be Canonicalize(ch).
     [...]
---*/

assert(/^.$/u.test('\ud800\udc00'));