"can't extend nested selectors" when using @at-root

[esr360]

Thanks for all of your hard work getting Libsass up-to date with Node-Sass version 3.4 - I have been waiting a long time for this change, but I regret to say my app will still not compile using Libsass.

I am experiencing an issue when using @extend and @at-root, 2 things I know you guys have struggled with at Libsass, so I apologise if you are aware of this issue.

@mixin foo($option: 'foo') {
     // Create a unique, random placeholder to store styles
    $placeholder : $option + random(9999);

    // Store the styles in the placeholder
    @at-root %#{$placeholder} {
        content: 'foo';
    }

    @at-root {
        .bar {
            @extend %#{$placeholder};
        }
    }
}

@mixin bar($option) {
    @include foo($option);
}

.foo {
    @include bar('baz');
}

libsass 3.4.0

Error: Can't extend %foo6595: can't extend nested selectors

ruby sass 3.4.21

.bar {
  content: 'foo';
}

version info:

node - 6.9.1
grunt-sass@2.0.0

[mgreter]

Thanks for the report. This edge case was not yet covered by our spec tests.
This will be fixed with #2247 (waiting for CI to be fixed first)

[esr360]

Amazing, thanks for the quick fix.