Better Sass through Susy susy-get Function

susy-get.scss

// Susy Get
// --------
// Return one setting from a grid
// - $key     : <keyword>
// - $layout  : <settings>
@function susy-get(
  $key,
  $layout: map-merge($susy-defaults, $susy)
) {
  $layout: parse-grid($layout);
  $_options: $layout $susy $susy-defaults;
  $_break: false;
  $_return: null;

  @each $opt in $_options {
    @if type-of($opt) == map and not($_break) {
      $_keyset: _susy-deep-has-key($opt, $key...);
      @if $_keyset {
        $_return: _susy-deep-get($opt, $key...);
        $_break: true;
      }
    }
  }

  @return $_return;
}