text: var global            = require('./_global')
    , inheritIfRequired = require('./_inherit-if-required')
    , dP                = require('./_object-dp').f
    , gOPN              = require('./_object-gopn').f
    , isRegExp          = require('./_is-regexp')
    , $flags            = require('./_flags')
    , $RegExp           = global.RegExp
    , Base              = $RegExp
    , proto             = $RegExp.prototype
    , re1               = /a/g
    , re2               = /a/g
    // "new" creates a new object, old webkit buggy here
    , CORRECT_NEW       = new $RegExp(re1) !== re1;
  
  if(require('./_descriptors') && (!CORRECT_NEW || require('./_fails')(function(){
    re2[require('./_wks')('match')] = false;
    // RegExp constructor can alter flags and IsRegExp works correct with @@match
    return $RegExp(re1) != re1 || $RegExp(re2) == re2 || $RegExp(re1, 'i') != '/a/i';
  }))){
    $RegExp = function RegExp(p, f){
      var tiRE = this instanceof $RegExp
        , piRE = isRegExp(p)
        , fiU  = f === undefined;
      return !tiRE && piRE && p.constructor === $RegExp && fiU ? p
        : inheritIfRequired(CORRECT_NEW
          ? new Base(piRE && !fiU ? p.source : p, f)
          : Base((piRE = p instanceof $RegExp) ? p.source : p, piRE && fiU ? $flags.call(p) : f)
        , tiRE ? this : proto, $RegExp);
    };
    var proxy = function(key){
      key in $RegExp || dP($RegExp, key, {
        configurable: true,
        get: function(){ return Base[key]; },
        set: function(it){ Base[key] = it; }
      });
    };
    for(var keys = gOPN(Base), i = 0; keys.length > i; )proxy(keys[i++]);
    proto.constructor = $RegExp;
    $RegExp.prototype = proto;
    require('./_redefine')(global, 'RegExp', $RegExp);
  }
  
  require('./_set-species')('RegExp');