Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.4.6)
// Compass (v1.0.1)
// ----

@mixin desc($names...) {
  @each $name in $names {
    @at-root &-#{$name} { @content; }
  }
}

.Level1 {
  parent: 'hi';
  #{&}-child {
    color: 'test';
  }
  @include desc(child2) {
    color: test2;
  }
}

.Level1, .Level2 {
  parent: 'hi';
  #{&}-child {
    color: 'test';
  }
  @include desc(child2) {
    color: test2;
  }
}

SassMeister-output.css

.Level1 {
  parent: 'hi';
}
.Level1 .Level1-child {
  color: 'test';
}
.Level1-child2 {
  color: test2;
}

.Level1, .Level2 {
  parent: 'hi';
}
.Level1 .Level1, .Level1 .Level2-child, .Level2 .Level1, .Level2 .Level2-child {
  color: 'test';
}
.Level1-child2, .Level2-child2 {
  color: test2;
}