Multiple selector with ampersand in Sass 3.3.8

[hinok]

Just upgraded from 3.3.0.rc.2 to 3.3.8 and unfortunately some of our styles don't compile anymore.

We have the problem with styles like:

.list {
    @at-root {
        #{&}--big#{&}--active {
            color: red;
        }
    }
}

I know that since final release 3.3.0 we can write styles without @at-root and just use & instead #{&}. Anyway after changes constructions like below don't compile.

.list {
    &--big&--active {
        color: red;
    }
}

Codepen demo: http://codepen.io/anon/pen/lJfHw

[Snugug]

There was a change in how these selectors work for the full release of Sass 3.3 as the interpolation created some unexpected results. See Nathan's Post on it

[Snugug]

Also see #286

[hinok]

@Snugug Thanks for fast response. I read these posts earlier. I'm aware of these changes.
What doesn't change the fact that I can't use multiple selectors now...

In my current project I used a lot of multiple classes selectors like the example above.
It would be great if I could get the string in some way from ampersand (&) and use interpolation like this

$el: &; // I know that it doesn't work now, it's only example
#{$el}--big#{$el}--active { ... }

Any ideas to solve this problem?

[nex3]

You won't be able to do this until script & is reintroduced in Sass 3.4.