Bare CSS color names should not be compressed when used in string expressions

[bwbuchanan]

Upstream issue: sass/sass#2196

.#{'b-' + black} {
  background: black;
}

LibSass 3.4.0-RC1

.b-#000{background:black}

Ruby Sass 3.4.22

.b-#000{background:black}

[xzyfer]

@bwbuchanan thanks for the report. I have confirm this behaviour is broken in both LibSass and Ruby Sass.

[sapegin]

Another example:

$colors: red #f00, yellow #ff0, green #0f0, blue #00f;
@each $entry in $colors {
    $name: nth($entry, 1);
    $color: nth($entry, 2);

    .box-#{$name} > header {
         background: $color;
    }
}

Was reported at Ruby Sass in 2013, I can reproduce it in Libasass 3.5.0.beta.2 (via node-sass 4.5.0). Seems to be fine in LibSass 3.4.0 though.

Another similar issue — #1701