def in_search_path(&block)
      keychains = Keychains.search_path
      begin 
        Keychains.search_path = [self] + keychains
        yield
      ensure
        Keychains.search_path = keychains
        # print_task 'keychain', "Restored search path"
      end
    end
def in_search_path(&block)
      keychains = Keychains.search_path
      begin 
        Keychains.search_path = [self] + keychains
        yield
      ensure
        Keychains.search_path = keychains
        # print_task 'keychain', "Restored search path"
      end
    end
def in_search_path ( & block ) keychains = Keychains . search_path begin Keychains . search_path = [ self ] + keychains yield ensure Keychains . search_path = keychains # print_task 'keychain', "Restored search path" end end
Installs this keychain in the head of teh search path and restores the original on
 completion of the block

 @param the block to be invoked with the modified search path
Installs this keychain in the head of teh search path and restores the original on completion of the block