Pushed to version 0.1.8. Details in changelog. (Makefile, FontAwesome, sass)

assets/sass/lib/bourbon/functions/_unpack.scss

@@ -0,0 +1,27 @@
+@charset "UTF-8";
+
+/// Converts shorthand to the 4-value syntax.
+///
+/// @param {List} $shorthand
+///
+/// @example scss - Usage
+///   .element {
+///     margin: unpack(1em 2em);
+///   }
+///
+/// @example css - CSS Output
+///   .element {
+///     margin: 1em 2em 1em 2em;
+///   }
+
+@function unpack($shorthand) {
+  @if length($shorthand) == 1 {
+    @return nth($shorthand, 1) nth($shorthand, 1) nth($shorthand, 1) nth($shorthand, 1);
+  } @else if length($shorthand) == 2 {
+    @return nth($shorthand, 1) nth($shorthand, 2) nth($shorthand, 1) nth($shorthand, 2);
+  } @else if length($shorthand) == 3 {
+    @return nth($shorthand, 1) nth($shorthand, 2) nth($shorthand, 3) nth($shorthand, 2);
+  } @else {
+    @return $shorthand;
+  }
+}