diff --git a/app/models/attachment.rb b/app/models/attachment.rb
index 93a1534e5..ff434d8f2 100644
--- a/app/models/attachment.rb
+++ b/app/models/attachment.rb
@@ -1,16 +1,16 @@
-# redMine - project management software
-# Copyright (C) 2006-2007  Jean-Philippe Lang
+# Redmine - project management software
+# 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.
@@ -20,7 +20,7 @@ require "digest/md5"
 class Attachment < ActiveRecord::Base
   belongs_to :container, :polymorphic => true
   belongs_to :author, :class_name => "User", :foreign_key => "author_id"
-  
+
   validates_presence_of :container, :filename, :author
   validates_length_of :filename, :maximum => 255
   validates_length_of :disk_filename, :maximum => 255
@@ -31,20 +31,20 @@ class Attachment < ActiveRecord::Base
   acts_as_activity_provider :type => 'files',
                             :permission => :view_files,
                             :author_key => :author_id,
-                            :find_options => {:select => "#{Attachment.table_name}.*", 
+                            :find_options => {:select => "#{Attachment.table_name}.*",
                                               :joins => "LEFT JOIN #{Version.table_name} ON #{Attachment.table_name}.container_type='Version' AND #{Version.table_name}.id = #{Attachment.table_name}.container_id " +
                                                         "LEFT JOIN #{Project.table_name} ON #{Version.table_name}.project_id = #{Project.table_name}.id OR ( #{Attachment.table_name}.container_type='Project' AND #{Attachment.table_name}.container_id = #{Project.table_name}.id )"}
-  
+
   acts_as_activity_provider :type => 'documents',
                             :permission => :view_documents,
                             :author_key => :author_id,
-                            :find_options => {:select => "#{Attachment.table_name}.*", 
+                            :find_options => {:select => "#{Attachment.table_name}.*",
                                               :joins => "LEFT JOIN #{Document.table_name} ON #{Attachment.table_name}.container_type='Document' AND #{Document.table_name}.id = #{Attachment.table_name}.container_id " +
                                                         "LEFT JOIN #{Project.table_name} ON #{Document.table_name}.project_id = #{Project.table_name}.id"}
 
   cattr_accessor :storage_path
   @@storage_path = Redmine::Configuration['attachments_storage_path'] || "#{RAILS_ROOT}/files"
-  
+
   def validate
     if self.filesize > Setting.attachment_max_size.to_i.kilobytes
       errors.add(:base, :too_long, :count => Setting.attachment_max_size.to_i.kilobytes)
@@ -76,7 +76,7 @@ class Attachment < ActiveRecord::Base
     if @temp_file && (@temp_file.size > 0)
       logger.debug("saving '#{self.diskfile}'")
       md5 = Digest::MD5.new
-      File.open(diskfile, "wb") do |f| 
+      File.open(diskfile, "wb") do |f|
         buffer = ""
         while (buffer = @temp_file.read(8192))
           f.write(buffer)
@@ -100,7 +100,7 @@ class Attachment < ActiveRecord::Base
   def diskfile
     "#{@@storage_path}/#{self.disk_filename}"
   end
-  
+
   def increment_download
     increment!(:downloads)
   end
@@ -108,27 +108,27 @@ class Attachment < ActiveRecord::Base
   def project
     container.project
   end
-  
+
   def visible?(user=User.current)
     container.attachments_visible?(user)
   end
-  
+
   def deletable?(user=User.current)
     container.attachments_deletable?(user)
   end
-  
+
   def image?
     self.filename =~ /\.(jpe?g|gif|png)$/i
   end
-  
+
   def is_text?
     Redmine::MimeType.is_type?('text', filename)
   end
-  
+
   def is_diff?
     self.filename =~ /\.(patch|diff)$/i
   end
-  
+
   # Returns true if the file is readable
   def readable?
     File.readable?(diskfile)
@@ -145,7 +145,7 @@ class Attachment < ActiveRecord::Base
       attachments.each_value do |attachment|
         file = attachment['file']
         next unless file && file.size > 0
-        a = Attachment.create(:container => obj, 
+        a = Attachment.create(:container => obj,
                               :file => file,
                               :description => attachment['description'].to_s.strip,
                               :author => User.current)
@@ -160,18 +160,18 @@ class Attachment < ActiveRecord::Base
     end
     {:files => attached, :unsaved => obj.unsaved_attachments}
   end
-  
+
 private
   def sanitize_filename(value)
     # get only the filename, not the whole path
     just_filename = value.gsub(/^.*(\\|\/)/, '')
     # NOTE: File.basename doesn't work right with Windows paths on Unix
-    # INCORRECT: just_filename = File.basename(value.gsub('\\\\', '/')) 
+    # INCORRECT: just_filename = File.basename(value.gsub('\\\\', '/'))
 
     # Finally, replace all non alphanumeric, hyphens or periods with underscore
-    @filename = just_filename.gsub(/[^\w\.\-]/,'_') 
+    @filename = just_filename.gsub(/[^\w\.\-]/,'_')
   end
-  
+
   # Returns an ASCII or hashed filename
   def self.disk_filename(filename)
     timestamp = DateTime.now.strftime("%y%m%d%H%M%S")