@function output-isolation($Span-Map) {
  // Set up Left/Right maps
  $Return: ();

  $Span: map-get($Span-Map, 'span');
  $Location: map-get($Span-Map, 'location');

  $Grid: map-get($Span-Map, 'grid');
  $Gutter: map-get($Span-Map, 'gutter');
  $Style: map-get($Span-Map, 'style');

  $Start-Row: map-get($Span-Map, 'start row');
  $End-Row: map-get($Span-Map, 'end row');

  $Fixed-Gutter: map-get($Span-Map, 'fixed gutter');
  $Split-Gutter: map-get($Span-Map, 'split gutter');
  $Gutter-Property: map-get($Span-Map, 'gutter property');

  $Direction: map-get($Span-Map, 'direction');
  $Options: map-get($Span-Map, 'options');

  $Width: column-span($Span, $Location, $Grid, $Gutter, $Style);
  $Margin-Span: column-span(($Location - 1), 1, $Grid, $Gutter, $Style);
  $Gutter-Span: gutter-span($Gutter, $Grid);

  // Backwards Compatibility for Options
  @if type-of($Options) != 'map' and $Options != null {
    $Options: ('clear': unquote(nth($Options, 1)));
  }

  $Dir: $Direction;
  $Opp: opposite-direction($Dir);

  $Return: map-merge($Return, ('width': $Width));

  @if ($End-Row) {
    $Return: map-merge($Return, ('float': $Opp));
    $Return: map-merge($Return, ('margin-#{$Dir}': 0));

    @if $Split-Gutter and not $Fixed-Gutter {
      $Return: map-merge($Return, ('#{$Gutter-Property}-#{$Opp}': $Gutter-Span / 2));
    }
    @else {
      $Return: map-merge($Return, ('margin-#{$Opp}': 0));
    }
  }
  @else {
    $Return: map-merge($Return, ('float': $Dir));
    $Return: map-merge($Return, ('margin-#{$Opp}': -100%));

    @if $Start-Row {
      @if $Split-Gutter and not $Fixed-Gutter {
        $Return: map-merge($Return, ('margin-#{$Dir}': $Gutter-Span / 2));
      }
      @else if not $Fixed-Gutter {
        $Return: map-merge($Return, ('margin-#{$Dir}': 0));
      }
    }
    @else {
      @if $Split-Gutter and not $Fixed-Gutter {
        $Return: map-merge($Return, ('margin-#{$Dir}': $Margin-Span + $Gutter-Span + $Gutter-Span / 2));
      }
      @else if not $Fixed-Gutter {
        $Return: map-merge($Return, ('margin-#{$Dir}': $Margin-Span + $Gutter-Span));
      }
      @else {
        $Return: map-merge($Return, ('margin-#{$Dir}': $Margin-Span));
      }
    }
  }
  // If options are set, we merge them in!
  @if ($Options) {
    $Return: map-merge($Return, $Options);
  }

  // If CLear isn't already available, set it!
  @if not map-has-key($Return, 'clear') {
    $Return: map-merge($Return, ('clear': none));
  }

  // Left Fixed Gutters
  @if $Fixed-Gutter {
    @if index($Style, 'split') {
      $Return: map-merge($Return, ('#{$Gutter-Property}-#{$Dir}': $Gutter-Span / 2));
      $Return: map-merge($Return, ('#{$Gutter-Property}-#{$Opp}': $Gutter-Span / 2));
    }
    @else {
      @if not $End-Row {
        $Return: map-merge($Return, ('#{$Gutter-Property}-#{$Opp}': $Gutter-Span));
      }
      @else {
        $Return: map-merge($Return, ('#{$Gutter-Property}-#{$Opp}': 0));
      }
    }
  }

  @return $Return;
}

//////////////////////////////
// Happy Syntax for Isolation
//
// Makes working with Isolation easier, as it moves Clear to a 1st class citizen of the mixin, and automatically builds the verbose grid-span mixin call
//////////////////////////////
@mixin isolation-span($Span, $Location, $clear: false, $grid: false, $gutter: false, $gutter-style: false, $from: false) {
  $Options: ();
  @if $clear {
    $Options: map-merge($Options, ('clear': $clear));
  }
  @if $from {
    $Options: map-merge($Options, ('from': $from));
  }

  $Options: if(length($Options) > 0, $Options, null);
  @include grid-span($Span, $Location, $grid, $gutter, 'isolation', $gutter-style, $Options);
}