Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.4)
// Compass (v1.0.0.alpha.18)
// ----

@function splitString($string, $var, $location: 'first')
{
  $length : str-length($string);
  $index : str-index($string,$var);
  $first : str-slice($string,0,$index - 1);
  $second : str-slice($string,$index + 2,$length);

  @if $location == 'first' {
    @return $first;
  } @else {
    @return $second;
  }
}

.node-article {
  $block: '.node-article';
  
  &__element {
    $element: 'element';
    content: 'test';
    
    @at-root #{}#{$block} {
      content: 'testing';
    }
  }
}

SassMeister-output.css

Invalid CSS after "    @at-root #{": expected expression (e.g. 1px, bold), was "}#{$block} {"