diff --git a/ChangeLog b/ChangeLog
index 4e6fb2ba49..c8c4845a34 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+Wed Nov 23 17:42:24 2005  Kouhei Sutou  <kou@cozmixng.org>
+
+	* lib/rss/rss.rb: fixed a indentation bug.
+
+	* lib/rss/taxonomy.rb: fixed <taxo:topic> #to_s bug.
+
+	* test/rss/test_taxonomy.rb: added a #to_s test.
+
 Wed Nov 23 03:40:49 2005  Guy Decoux  <ts@moulon.inra.fr>
 
 	* re.c (KR_REHASH): should cast to unsigned for 64bit CPU.
diff --git a/lib/rss/rss.rb b/lib/rss/rss.rb
index d2b7604488..7ccf1aefa1 100644
--- a/lib/rss/rss.rb
+++ b/lib/rss/rss.rb
@@ -725,8 +725,8 @@ EOC
       private_methods.each do |meth|
         if /\A([^_]+)_[^_]+_elements?\z/ =~ meth and
             self.class::NSPOOL.has_key?($1)
-          res = __send__(meth, need_convert)
-          rv << "#{indent}#{res}" if /\A\s*\z/ !~ res
+          res = __send__(meth, need_convert, indent)
+          rv << res if /\A\s*\z/ !~ res
         end
       end
       rv.join("\n")
diff --git a/lib/rss/taxonomy.rb b/lib/rss/taxonomy.rb
index c89de64d31..3eb5b893aa 100644
--- a/lib/rss/taxonomy.rb
+++ b/lib/rss/taxonomy.rb
@@ -163,7 +163,6 @@ module RSS
       def to_s(need_convert=true, indent=calc_indent)
         rv = tag(indent) do |next_indent|
           [
-           link_element(need_convert, next_indent),
            other_element(need_convert, next_indent),
           ]
         end
@@ -189,6 +188,12 @@ module RSS
         [@taxo_link, @taxo_topics]
       end
 
+      def _attrs
+        [
+         ["#{RDF::PREFIX}:about", true, "about"]
+        ]
+      end
+      
       def _tags
         rv = []
         rv << [TAXO_URI, "link"] unless @taxo_link.nil?
diff --git a/test/rss/test_taxonomy.rb b/test/rss/test_taxonomy.rb
index fda4c9407b..4c760a43d4 100644
--- a/test/rss/test_taxonomy.rb
+++ b/test/rss/test_taxonomy.rb
@@ -20,7 +20,7 @@ module RSS
         @dc_prefix => @dc_uri,
       }
       
-      @parents = %w(channel item)
+      @topics_parents = %w(channel item)
       
       @topics_lis = [
         "http://meerkat.oreillynet.com/?c=cat23",
@@ -66,28 +66,28 @@ module RSS
         info.each do |name, value|
           case name
           when :topics
-            rv << "<#{@prefix}:topics>\n"
-            rv << "  <rdf:Bag>\n"
+            rv << "  <#{@prefix}:topics>\n"
+            rv << "    <rdf:Bag>\n"
             value.each do |li|
               resource = CGI.escapeHTML(li)
-              rv << "    <rdf:li resource=\"#{resource}\"/>\n"
+              rv << "      <rdf:li resource=\"#{resource}\"/>\n"
             end
-            rv << "  </rdf:Bag>\n"
-            rv << "</#{@prefix}:topics>"
+            rv << "    </rdf:Bag>\n"
+            rv << "  </#{@prefix}:topics>\n"
           else
             prefix = (name == :link ? @prefix : @dc_prefix)
             rv << "  <#{prefix}:#{name}>#{value}</#{prefix}:#{name}>\n"
           end
         end
         rv << "</#{@prefix}:topic>"
-      end.join("\n")
+      end
       
       @rss_source = make_RDF(<<-EOR, @ns)
 #{make_channel(@topics_node)}
 #{make_image()}
 #{make_item(@topics_node)}
 #{make_textinput()}
-#{@topic_nodes}
+#{@topic_nodes.join("\n")}
 EOR
 
       @rss = Parser.parse(@rss_source)
@@ -138,10 +138,22 @@ EOR
     end
     
     def test_to_s
-      @parents.each do |parent|
+      @topics_parents.each do |parent|
         meth = "taxo_topics_element"
         assert_equal(@topics_node, @rss.__send__(parent).funcall(meth))
       end
+
+      @topic_nodes.each_with_index do |node, i|
+        expected = REXML::Document.new(node).root
+        actual = REXML::Document.new(@rss.taxo_topics[i].to_s(true, "")).root
+        expected_elems = expected.children.reject {|x| x.is_a?(REXML::Text)}
+        actual_elems = actual.children.reject {|x| x.is_a?(REXML::Text)}
+        expected_elems.sort! {|x, y| x.name <=> y.name}
+        actual_elems.sort! {|x, y| x.name <=> y.name}
+        assert_equal(expected_elems.collect {|x| x.to_s},
+                     actual_elems.collect {|x| x.to_s})
+        assert_equal(expected.attributes.sort, actual.attributes.sort)
+      end
     end
   end
 end