Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.4)
// Compass (v1.0.0.alpha.18)
// ----

$grid-columns: 12;
$visual-grid-breakpoints: null;
$default-feature: min-width;

@function new-breakpoint($query:$feature $value $columns, $total-columns: $grid-columns) {

  @if length($query) == 1 {
    $query: $default-feature nth($query, 1) $total-columns;
  }

  @else if length($query) % 2 == 0 {
    $query: append($query, $total-columns);
  }

  // @if not belongs-to($query, $visual-grid-breakpoints) {
  //   $visual-grid-breakpoints: append($visual-grid-breakpoints, $query, comma) !global;
  // }

  @return $query;
}

$tablet: new-breakpoint(min-width 1024px 8);

.block {
  width: $tablet;
}

SassMeister-output.css

.block {
  width: min-width 1024px 8;
}