FIX: Do not suppress reply-to when other posts quoted

db/migrate/20140731011328_add_reply_quoted_to_posts.rb

@@ -0,0 +1,16 @@
+class AddReplyQuotedToPosts < ActiveRecord::Migration
+  def up
+    add_column :posts, :reply_quoted, :boolean, null: false, default: false
+    execute "UPDATE posts p
+             SET reply_quoted = true
+             WHERE EXISTS(
+               SELECT 1 FROM quoted_posts q
+               JOIN posts p1 ON p1.post_number = p.reply_to_post_number AND p1.topic_id = p.topic_id
+               WHERE q.post_id = p.id AND q.quoted_post_id = p1.id
+             ) AND p.reply_to_post_number IS NOT NULL"
+  end
+
+  def down
+    remove_column :posts, :reply_quoted
+  end
+end