Added a new function - extract for extracting padding values from a variable

lib/less/functions.js

@@ -346,6 +346,11 @@ tree.functions = {
     shade: function(color, amount) {
         return this.mix(this.rgb(0, 0, 0), color, amount);
     },
+    extract: function(index, values) {
+        index = index.value - 1; // (1-based index)
+        return values.value[index];
+    },
+
     "data-uri": function(mimetype, path) {
 
         if (typeof window !== 'undefined') {

test/css/functions.css

@@ -108,3 +108,6 @@
   average: #7b007b;
   negation: #d73131;
 }
+#extract {
+  result: 3 2 1 C B A;
+}

test/less/functions.less

@@ -119,3 +119,8 @@
   average: average(#f60000, #0000f6);
   negation: negation(#f60000, #313131);
 }
+
+#extract {
+  @anon: A B C 1 2 3;
+  result: extract(6, @anon) extract(5, @anon) extract(4, @anon) extract(3, @anon) extract(2, @anon) extract(1, @anon);
+}