Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

@mixin for-tablets-and-up {
  @media only screen and (min-width: 600px) {
    @content;
  }

  html.lt-ie9 & {
    @content;
  }
}

@mixin foobar {
  @include for-tablets-and-up {
    background: blue;
  }
}

.example {
  @include foobar;
}

SassMeister-output.css

@media only screen and (min-width: 600px) {
  .example {
    background: blue;
  }
}
html.lt-ie9 .example {
  background: blue;
}