new file linear-gradient

src/__tool.fallback.gradient.less

@@ -24,10 +24,6 @@
 // CHANGED: DEPRECATED. use `linear-gradient` name below.
 ///////////////////////////////////////////////////////////////////////////////
 .gradient(@arg) {
-  .linear-gradient(@arg);
-}
-
-.linear-gradient(@arg) {
   background-image: -webkit-linear-gradient(@arg);
   background-image:    -moz-linear-gradient(@arg);
   background-image:     -ms-linear-gradient(@arg);

src/__tool.fallback.linear-gradient.less

@@ -0,0 +1,30 @@
+
+/*################################*\
+    xmeter  |  __tool.fallback.linear-gradient.less
+\*################################*/
+
+
+// Applies a single linear gradient background on an element.
+// This is an unusual property in that a single css value list is comprised
+// of comma-separated values (unlike normal css value lists which are space-separated).
+// Thus when you call the mixin, you must append a dummy semicolon at the end of your argument.
+// If you do not, Less will interpret the commas as argument separators.
+//
+// See [MDN](https://developer.mozilla.org/en-US/docs/Web/CSS/linear-gradient) for more info.
+// See [WPD](http://docs.webplatform.org/wiki/css/functions/linear-gradient) for more info.
+//
+// ^params
+// : @arg - a list of comma-separated components (each as a component of one gradient value).
+//          Must be terminated with a semicolon (;).
+// ^author
+// : Chris Harvey
+// ^updated
+// : 2014-07-08
+.linear-gradient(@arg) {
+  background-image: -webkit-linear-gradient(@arg);
+  background-image:    -moz-linear-gradient(@arg);
+  background-image:     -ms-linear-gradient(@arg);
+  background-image:      -o-linear-gradient(@arg);
+  background-image:         linear-gradient(@arg);
+  background-image:        -webkit-gradient(@arg); // "Old Webkit"
+}