nested - SASS nesting for attribute selector -

i'm trying nest css selector find several id's und classes that's being generated drupal.

.wrapper, #wrapper {     [class^="starts-with-"] { ... } } 

but won't work expect to. output is

 .wrapper[class^="starts-with-"],  #wrapper[class^="starts-with-"] { ... } 

i'd expect select element in .wrapper , #wrapper

.wrapper [class^="starts-with-"], #wrapper [class^="starts-with-"] { ... }