Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.4.11)
// Compass (v1.0.3)
// ----

/* Sass 3.2.x
 * -> Required argument $values must come before any optional arguments.
 */

@mixin foo($val-1: 0, $val-2...) {
  val-1: $val-1;
	val-2: $val-2;
}

.sample {
	@include foo(bar, baz, foobar);
}

SassMeister-output.css

/* Sass 3.2.x
 * -> Required argument $values must come before any optional arguments.
 */
.sample {
  val-1: bar;
  val-2: baz, foobar;
}