Kill trailing whitespace in ruby files

app/models/forum_post.rb

@@ -11,54 +11,54 @@ class ForumPost < ActiveRecord::Base
   validate :validate_topic_is_unlocked
   before_destroy :validate_topic_is_unlocked
   after_save :delete_topic_if_original_post
-  
+
   module SearchMethods
     def body_matches(body)
       where("forum_posts.text_index @@ plainto_tsquery(E?)", body.to_escaped_for_tsquery)
     end
-    
+
     def for_user(user_id)
       where("forum_posts.creator_id = ?", user_id)
     end
-    
+
     def creator_name(name)
       where("forum_posts.creator_id = (select _.id from users _ where lower(_.name) = ?)", name.downcase)
     end
-    
+
     def active
       where("forum_posts.is_deleted = false")
     end
-    
+
     def search(params)
       q = scoped
       return q if params.blank?
-      
+
       if params[:creator_id].present?
         q = q.where("creator_id = ?", params[:creator_id].to_i)
       end
-      
+
       if params[:topic_id].present?
         q = q.where("topic_id = ?", params[:topic_id].to_i)
       end
-      
+
       if params[:topic_title_matches].present?
         q = q.joins(:topic).where("forum_topics.text_index @@ plainto_tsquery(E?)", params[:topic_title_matches].to_escaped_for_tsquery_split)
       end
-      
+
       if params[:body_matches].present?
         q = q.body_matches(params[:body_matches])
       end
-      
+
       if params[:creator_name].present?
         q = q.creator_name(params[:creator_name])
       end
-      
+
       q
     end
   end
-  
+
   extend SearchMethods
-  
+
   def self.new_reply(params)
     if params[:topic_id]
       new(:topic_id => params[:topic_id])
@@ -69,13 +69,13 @@ class ForumPost < ActiveRecord::Base
       new
     end
   end
-  
+
   def validate_topic_is_unlocked
     return if CurrentUser.is_moderator?
     return if topic.nil?
-    
+
     if topic.is_locked?
-      errors.add(:topic, "is locked") 
+      errors.add(:topic, "is locked")
       return false
     else
       return true
@@ -85,7 +85,7 @@ class ForumPost < ActiveRecord::Base
   def editable_by?(user)
     creator_id == user.id || user.is_janitor?
   end
-  
+
   def update_topic_updated_at
     if topic
       topic.updater_id = CurrentUser.id
@@ -93,19 +93,19 @@ class ForumPost < ActiveRecord::Base
       topic.save
     end
   end
-  
+
   def initialize_creator
     self.creator_id = CurrentUser.id
   end
-  
+
   def initialize_updater
     self.updater_id = CurrentUser.id
   end
-  
+
   def initialize_is_deleted
     self.is_deleted = false if is_deleted.nil?
   end
-  
+
   def creator_name
     User.id_to_name(creator_id)
   end
@@ -113,28 +113,28 @@ class ForumPost < ActiveRecord::Base
   def updater_name
     User.id_to_name(updater_id)
   end
-  
+
   def quoted_response
     stripped_body = body.gsub(/\[quote\](?:.|\n|\r)+?\[\/quote\][\n\r]*/m, "")
     "[quote]\n#{creator_name} said:\n\n#{stripped_body}\n[/quote]\n\n"
   end
-  
+
   def forum_topic_page
     ((ForumPost.where("topic_id = ? and created_at <= ?", topic_id, created_at).count) / Danbooru.config.posts_per_page.to_f).ceil
   end
-  
+
   def is_original_post?
     ForumPost.exists?(["id = ? and id = (select _.id from forum_posts _ where _.topic_id = ? order by _.id asc limit 1)", id, topic_id])
   end
-  
+
   def delete_topic_if_original_post
     if is_deleted? && is_original_post?
       topic.update_attribute(:is_deleted, true)
     end
-    
+
     true
   end
-  
+
   def build_response
     dup.tap do |x|
       x.body = x.quoted_response