Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.4.9)
// Compass (v1.0.1)
// ----

@mixin icons($icon:'') {
  [class^="icon__#{$icon}"], [class*="icon__#{$icon}"] {
    @content;
  }
}

@include icons {
  color: red;
}


@include icons(arrow){
  color: blue;
}

SassMeister-output.css

[class^="icon__"], [class*="icon__"] {
  color: red;
}

[class^="icon__arrow"], [class*="icon__arrow"] {
  color: blue;
}