fix "{$foo->bar}"."{$foo->bar($a)}"."{$foo->bar(&$a, $b)}";
fix "{$foo['bar']}"
fix "{$this->foo->bar('foobar')}"
Merge pull request #1991 from adamjimenez/patch-28

fix "{$foo->bar}"."{$foo->bar($a)}"."{$foo->bar(&$a, $b)}";