IronRuby.Builtins.RegexpTransformer.ParsePostQuantifier C# (CSharp) Method

        private void ParsePostQuantifier(int lastEntityIndex, bool possessive) {
            int c = Peek();

            if (c == '+') {
                // nested possessive quantifiers not directly supported by Regex:
                Skip();
                _sb.Insert(lastEntityIndex, possessive ? "(?>" : "(?:");
                Append(')');
                if (!possessive) {
                    Append('+');
                }
            } else if (c == '?') {
                Skip();
                Append('?');
            }
        }