/// Stroke font-character
/// @param  {Integer} $stroke - Stroke width
/// @param  {Color}   $color  - Stroke color
/// @return {List}            - text-shadow list
@function stroke($stroke, $color) {
    $shadow: ();
    $from: $stroke*-1;

    @for $i from $from through $stroke {
        @for $j from $from through $stroke {
            $shadow: append($shadow, $i*1px $j*1px 0 $color, comma);
        }
    }

    @return $shadow;
}

/// Stroke font-character
/// @param  {Integer} $stroke - Stroke width
/// @param  {Color}   $color  - Stroke color
/// @return {Style}           - text-shadow
@mixin stroke($stroke, $color) {
    text-shadow: stroke($stroke, $color);
}
