Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.4.13)
// Compass (v1.0.3)
// ----

/* for Sass3.2 */
$block: '.block';
#{$block} {
  color: green;
  &__element {
    color: yellow;
  }
  &--modifier {
    color: blue;
    & #{$block}__element {
      color: tomato;
    }
  }
}

/* for >=Sass3.3 */
.block {
  $_b: &;
  color: green;
  &__element {
    color: yellow;
  }
  &--modifier {
    color: blue;
    & #{$_b}__element {
      color: tomato;
    }
  }
}

SassMeister-output.css

/* for Sass3.2 */
.block {
  color: green;
}
.block__element {
  color: yellow;
}
.block--modifier {
  color: blue;
}
.block--modifier .block__element {
  color: tomato;
}

/* for >=Sass3.3 */
.block {
  color: green;
}
.block__element {
  color: yellow;
}
.block--modifier {
  color: blue;
}
.block--modifier .block__element {
  color: tomato;
}