Merge pull request rubocop#1206 from yujinakayama/fix-error-at-anonym…

…ous-keyword-splat-arg

Fix error at anonymous keyword splat arguments

CHANGELOG.md

@@ -9,6 +9,7 @@
 ### Bugs fixed
 
 * [#1197](https://github.com/bbatsov/rubocop/issues/1197): Fix false positive for new lambda syntax in `SpaceInsideBlockBraces`. ([@jonas054][])
+* [#1201](https://github.com/bbatsov/rubocop/issues/1201): Fix error at anonymous keyword splat arguments in some variable cops. ([@yujinakayama][])
 
 ## 0.24.1 (03/07/2014)
 

lib/rubocop/cop/variable_force.rb

@@ -127,13 +127,14 @@ def dispatch_node(node)
       # rubocop:enable Style/MethodLength, Style/CyclomaticComplexity
 
       def process_variable_declaration(node)
-        # restarg would have no name:
+        variable_name = node.children.first
+
+        # restarg and kwrestarg would have no name:
         #
         #   def initialize(*)
         #   end
-        return if node.type == :restarg && node.children.empty?
+        return unless variable_name
 
-        variable_name = node.children.first
         variable_table.declare_variable(variable_name, node)
       end
 

spec/rubocop/cop/lint/useless_assignment_spec.rb

@@ -1516,6 +1516,18 @@
     include_examples 'mimics MRI 2.1'
   end
 
+  context 'when an anonymous keyword splat method argument is defined' do
+    let(:source) do
+      [
+        'def some_method(name: value, **)',
+        'end'
+      ]
+    end
+
+    include_examples 'accepts' unless RUBY_VERSION < '2.0'
+    include_examples 'mimics MRI 2.1'
+  end
+
   context 'when a block argument is not used' do
     let(:source) do
       [