diff --git a/lib/thor/options.rb b/lib/thor/options.rb
index c89c8a47d..9c42ca325 100644
--- a/lib/thor/options.rb
+++ b/lib/thor/options.rb
@@ -28,7 +28,14 @@ def convert_key(key)
         # Magic predicates. For instance:
         #   options.force? # => !!options['force']
         def method_missing(method, *args, &block)
-          method.to_s =~ /^(\w+)\?$/ ? !!self[$1] : super
+          method = method.to_s
+          if method =~ /^(\w+)=$/ 
+            self[$1] = args.first
+          elsif method =~ /^(\w+)\?$/
+            !!self[$1]
+          else 
+            self[method]
+          end
         end
     end
 
diff --git a/spec/options_spec.rb b/spec/options_spec.rb
index 45110368a..4922dbff8 100644
--- a/spec/options_spec.rb
+++ b/spec/options_spec.rb
@@ -207,6 +207,16 @@ def parse(*args)
       @hash.foo?.must be_true
       @hash.nothing?.must be_false
     end
+    
+    it "should map methods to keys: hash.foo => hash[:foo]" do
+      @hash.foo.must == @hash['foo']
+    end
+    
+    it "should map setters to keys: hash.foo=bar => hash[:foo] => bar" do
+      @hash.foo = :bar2
+      @hash.foo.must == :bar2
+    end
+    
   end
   
   describe ":numeric type" do