link_to_url escapes automatically.

lib/jpmobile/helpers.rb

@@ -168,7 +168,7 @@ def willcom_location_link_to(str,options={})
     private
     # 外部へのリンク
     def link_to_url(str, url)
-      %{<a href="#{url}">#{str}</a>}.html_safe
+      %{<a href="#{url}">#{str.html_safe? ? str : ERB::Util.h(str)}</a>}.html_safe
     end
   end
 end

test/rails/overrides/spec/helpers/helpers_spec.rb

@@ -7,7 +7,10 @@
   it "docomo_guid_link_to が guid=ON を付けたリンクを生成すること" do
     docomo_guid_link_to("STRING", :controller => "filter", :action => "rawdata").should == %{<a href="/filter/rawdata?guid=ON">STRING</a>}
   end
-
+  it "docomo_guid_link_toがstrをhtml_safeかチェックし 自動的にhtml要素をエスケープする" do
+    docomo_guid_link_to("<>&", :controller => "filter", :action => "rawdata").should == %{<a href="/filter/rawdata?guid=ON">&lt;&gt;&amp;</a>}
+    docomo_guid_link_to("<>&".html_safe, :controller => "filter", :action => "rawdata").should == %{<a href="/filter/rawdata?guid=ON"><>&</a>}
+  end
   it "softbank_location_link_to がリンク先にパラメータを含んでいても正常に動作すること" do
     # http://d.hatena.ne.jp/mizincogrammer/20090123/1232702067
     softbank_location_link_to("STRING", :controller => "filter", :action => "rawdata", :p => "param").should == %{<a href="location:auto?url=http://test.host/filter/rawdata&p=param">STRING</a>}