1<===> options.yml
2---
3:warning_todo:
4- libsass
5
6<===> input.scss
7$var: orange;
8
9.test {
10  color: $var;
11}
12
13.#{$var} {
14  color: #C0362C;
15}
16
17<===> output.css
18.test {
19  color: orange;
20}
21
22.orange {
23  color: #C0362C;
24}
25
26<===> warning
27WARNING on line 7, column 2 of input.scss:
28You probably don't mean to use the color value `orange' in interpolation here.
29It may end up represented as #ffa500, which will likely produce invalid CSS.
30Always quote color names when using them as strings (for example, "orange").
31If you really want to use the color value here, use `"" + $var'.
32
33<===> warning-dart-sass
34WARNING: You probably don't mean to use the color value orange in interpolation here.
35It may end up represented as orange, which will likely produce invalid CSS.
36Always quote color names when using them as strings or map keys (for example, "orange").
37If you really want to use the color value here, use '"" + $var'.
38
39  ,
407 | .#{$var} {
41  |    ^^^^
42  '
43    input.scss 7:4  root stylesheet
44