diff --git a/lib/redmine/hook.rb b/lib/redmine/hook.rb
index 84c33e326..7b06dc99f 100644
--- a/lib/redmine/hook.rb
+++ b/lib/redmine/hook.rb
@@ -1,16 +1,16 @@
 # Redmine - project management software
-# Copyright (C) 2006-2008  Jean-Philippe Lang
+# Copyright (C) 2006-2011  Jean-Philippe Lang
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
 # as published by the Free Software Foundation; either version 2
 # of the License, or (at your option) any later version.
-# 
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
@@ -22,7 +22,7 @@ module Redmine
     @@listener_classes = []
     @@listeners = nil
     @@hook_listeners = {}
-    
+
     class << self
       # Adds a listener class.
       # Automatically called when a class inherits from Redmine::Hook::Listener.
@@ -31,29 +31,29 @@ module Redmine
         @@listener_classes << klass
         clear_listeners_instances
       end
-      
+
       # Returns all the listerners instances.
       def listeners
         @@listeners ||= @@listener_classes.collect {|listener| listener.instance}
       end
- 
+
       # Returns the listeners instances for the given hook.
       def hook_listeners(hook)
         @@hook_listeners[hook] ||= listeners.select {|listener| listener.respond_to?(hook)}
       end
-      
+
       # Clears all the listeners.
       def clear_listeners
         @@listener_classes = []
         clear_listeners_instances
       end
-      
+
       # Clears all the listeners instances.
       def clear_listeners_instances
         @@listeners = nil
         @@hook_listeners = {}
       end
-      
+
       # Calls a hook.
       # Returns the listeners response.
       def call_hook(hook, context={})
@@ -101,11 +101,11 @@ module Redmine
       def self.default_url_options
         {:only_path => true }
       end
-      
+
       # Helper method to directly render a partial using the context:
-      # 
+      #
       #   class MyHook < Redmine::Hook::ViewListener
-      #     render_on :view_issues_show_details_bottom, :partial => "show_more_data" 
+      #     render_on :view_issues_show_details_bottom, :partial => "show_more_data"
       #   end
       #
       def self.render_on(hook, options={})
@@ -117,23 +117,23 @@ module Redmine
 
     # Helper module included in ApplicationHelper and ActionControllerso that
     # hooks can be called in views like this:
-    # 
+    #
     #   <%= call_hook(:some_hook) %>
     #   <%= call_hook(:another_hook, :foo => 'bar' %>
-    # 
+    #
     # Or in controllers like:
     #   call_hook(:some_hook)
     #   call_hook(:another_hook, :foo => 'bar'
-    # 
+    #
     # Hooks added to views will be concatenated into a string.  Hooks added to
     # controllers will return an array of results.
     #
     # Several objects are automatically added to the call context:
-    # 
+    #
     # * project => current project
     # * request => Request instance
     # * controller => current Controller instance
-    # 
+    #
     module Helper
       def call_hook(hook, context={})
         if is_a?(ActionController::Base)
@@ -142,7 +142,7 @@ module Redmine
         else
           default_context = {:controller => controller, :project => @project, :request => request}
           Redmine::Hook.call_hook(hook, default_context.merge(context)).join(' ')
-        end        
+        end
       end
     end
   end