Merge pull request #382 from rails/schneems/reslove!

Use existing resolve! api for find_asset!

lib/sprockets/base.rb

@@ -97,11 +97,9 @@ def [](*args)
     #
     # If the asset is not found an error will be raised.
     def find_asset!(*args)
-      asset = find_asset(*args)
-      if asset
-        return asset
-      else
-        raise_on_unknown_asset(*args)
+      uri, _ = resolve!(*args)
+      if uri
+        load(uri)
       end
     end
 
@@ -119,13 +117,5 @@ def compress_from_root(uri)
     def expand_from_root(uri)
       URITar.new(uri, self).expand
     end
-
-    private
-      def raise_on_unknown_asset(*args)
-        asset_name = args.shift
-        msg = String.new("Could not load asset #{ asset_name.inspect }")
-        msg << "with options #{ args.inspect }" unless args.empty?
-        raise Sprockets::NotFound, msg
-      end
   end
 end