<===> options.yml
---
:warning_todo:
- sass/libsass#2834

<===> input.scss
$foo: \/ !global;
.foo#{$foo}bar { a: b; }

<===> output.css
.foo\/bar {
  a: b;
}

<===> warning
DEPRECATION WARNING: As of Dart Sass 2.0.0, !global assignments won't be able to
declare new variables. Since this assignment is at the root of the stylesheet,
the !global flag is unnecessary and can safely be removed.

  ,
1 | $foo: \/ !global;
  | ^^^^^^^^^^^^^^^^
  '
    input.scss 1:1  root stylesheet