An unnecessarily complex font face dec

input.scss

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

@mixin font-face($font-name, $file, $svg-font-name: false, $weight: 100, $style: normal) {
	@font-face {
		$font-src: false;
		$font-list: (
			'eot?#iefix' 'embedded-opentype',
			'woff' 'woff',
			'ttf' 'truetype'
		);
		@if($svg-font-name) {
			$font-list: $font-list, 'svg##{$svg-font-name}' 'svg';
		}
		@each $font in $font-list {
			$extension: nth($font, 1);
			$format: nth($font, 2);
			$font-src: $font-src, url('#{$file}.#{$extension}') format('#{$format}');
		}

		font-family: quote($font-name);
		src: url('#{$file}.eot');
		src: $font-src;
		font-weight: $weight;
		font-style: $style;
	} 
}

@include font-face('Helvetica Neue Lite', fonts/helveticaneueltstd-th-webfont, helvetica_neue_lt_std35_thin, 100, 200);

output.css

@font-face {
  font-family: "Helvetica Neue Lite";
  src: url("fonts/helveticaneueltstd-th-webfont.eot");
  src: false, url('fonts/helveticaneueltstd-th-webfont."eot?#iefix" "embedded-opentype"') format('"woff" "woff"'), url("fonts/helveticaneueltstd-th-webfont.svg#helvetica_neue_lt_std35_thin") format("svg");
  font-weight: 100;
  font-style: 200;
}