Rake task to update (scriptaculous) javascripts directly from svn trunk (See related posts)

desc "Update your scriptaculous javascripts directly from svn trunk."
task :update_javascripts do
  SCRIPTACULOUS_HEAD='/tmp/sciptaculous_head'
  rm_rf SCRIPTACULOUS_HEAD
  system "svn co http://dev.rubyonrails.org/svn/rails/spinoffs/scriptaculous #{SCRIPTACULOUS_HEAD}" rescue nil
  unless !$?.nil? && $?.success?
    $stderr.puts "ERROR: Must have subversion (svn) available in the PATH to update to scriptaculous trunk"
    exit 1
  end
  FileUtils.cp(Dir[SCRIPTACULOUS_HEAD + '/lib/*.js'], RAILS_ROOT + '/public/javascripts/')
  FileUtils.cp(Dir[SCRIPTACULOUS_HEAD + '/src/*.js'], RAILS_ROOT + '/public/javascripts/')
end