Second exclude should not overwrite first one

examples/integration/archive_integration_example.rb

@@ -42,6 +42,7 @@
         archive :test1 do
           files src
           exclude "#{src}/q/w"
+          exclude "#{src}/q/w/e"
         end
       end
     end
@@ -74,6 +75,8 @@
     it "should only include qwe 1 and 2 (no 3)" do
       File.exists?("#{@test}/qwe1").should be_true
       File.exists?("#{@test}/q/qwe2").should be_true
+      File.exists?("#{@test}/q/w/qwe3").should be_false
+      File.exists?("#{@test}/q/w/e/qwe4").should be_false
     end
 
     it "should preserve file content" do
@@ -83,4 +86,4 @@
     end
   end
 
-end
+end

examples/unit/archive_example.rb

@@ -64,4 +64,4 @@ def archive(id = :foo, config = def_config)
       archive(:foo, {:files => ["foo", "bar"]}).send(:tar_files).should == "foo bar"
     end
   end
-end
+end

lib/astrails/safe/archive.rb

@@ -21,4 +21,4 @@ def tar_files
 
     end
   end
-end
+end

lib/astrails/safe/config/node.rb

@@ -27,13 +27,17 @@ def find(*path)
         alias :[] :find
 
         def set(key, value, &block)
-          @data[key.to_s] =
-            if value.is_a?(Hash)
-              Node.new(self, value, &block)
+          if value.is_a?(Hash)
+            @data[key.to_s] = Node.new(self, value, &block) 
+          else
+            raise(ArgumentError, "#{key}: no block supported for simple values") if block
+            if @data[key.to_s] && value
+              @data[key.to_s] = @data[key.to_s].to_a + value.to_a
             else
-              raise(ArgumentError, "#{key}: no block supported for simple values") if block
-              value
+              @data[key.to_s] = value
             end
+            value
+          end
         end
         alias :[]= :set
 
@@ -63,4 +67,4 @@ def dump(indent = "")
       end
     end
   end
-end
+end