@mixin font-face($name, $file: to-lower-case($name), $folder: $file, $weight: null, $style: null, $exts: eot woff2 woff ttf svg) {
  $src: null;

  $extmods: (
    eot: "?#iefix",
    svg: "#" + str-replace($name, " ", "_")
  );

  $formats: (
    eot: "embedded-opentype",
    otf: "opentype",
    ttf: "truetype"
  );


  @each $ext in $exts {
    $extmod: if(map-has-key($extmods, $ext), $ext + map-get($extmods, $ext), $ext);
    $format: if(map-has-key($formats, $ext), map-get($formats, $ext), $ext);
    $path: quote($folder + "/" + $file + "." + $extmod);
    $fontdecl: font($path) format(quote($format));
    $src: append($src, $fontdecl, comma);
  }

  @font-face {
    font-family: quote($name);
    font-weight: $weight;
    font-style: $style;
    @if(index($exts, eot)){
      $path: quote($folder + "/" + $file + ".eot");
      $fontdecl: font($path);
      src: $fontdecl;
    }
    src: $src;
  }
}