Interpolation error in classes starting with -

[hagenburger]

This won’t work in LibSass but does in Ruby Sass and is a valid CSS class:

$name: "my-class";

.-#{$name} {
  content: "test";
}

Expected:

.-my-class {
  content: "test";
}

See tests:
http://sassmeister.com/gist/1ea1287c028efb70c95a

[mgreter]

This works as expected with #1249 ... not sure which commit actually contains the fix!

[xzyfer]

Spec added sass/sass-spec#442

[mgreter]

We now have a passing spec test since #1249 was merged 🎈