Comments in selectors throwing errors

[xzyfer]

Originally mentioned in #1122 (comment)

foo {
  &.bar, /* */
  &.baz {
    color: red;
  }
}

Ruby Sass

foo.bar, foo.baz {
  color: red; }

Libsass

Error: invalid selector after ,
        on line 3 of test.scss
>>   &.bar, /* */
   --------^

Removing the &, or the nesting resolves the issue. AFAIK this is the minimal test case.

[xzyfer]

Specs added sass/sass-spec#381