<===> options.yml
---
:todo:
- libsass

<===> input.scss
$base_url: "/static_loc/";
div {
  background-image: "url("#{$base_url}"img/beta.png)";
}

span {
  background-image: url(#{$base_url}img/beta.png);
}

fudge {
  walnuts: blix"fludge"#{hey now}123;
}
<===> output.css
div {
  background-image: "url(" /static_loc/ "img/beta.png)";
}

span {
  background-image: url(/static_loc/img/beta.png);
}

fudge {
  walnuts: blix "fludge" hey now123;
}