fixes #530

app/models/forum_post.rb

@@ -149,7 +149,7 @@ class ForumPost < ActiveRecord::Base
   end
 
   def quoted_response
-    stripped_body = body.gsub(/\[quote\](?:.|\n|\r)+?\[\/quote\][\n\r]*/m, "")
+    stripped_body = DText.strip_blocks(body, "quote")
     "[quote]\n#{creator_name} said:\n\n#{stripped_body}\n[/quote]\n\n"
   end
 

app/models/post.rb

@@ -547,7 +547,7 @@ class Post < ActiveRecord::Base
     end
 
     def has_dup_tag?
-      has_tag?("duplicate") ? true : false
+      has_tag?("duplicate")
     end
 
     def tag_categories