code: def set_command_execute(editor, variables):
      
      option = variables.get('set_option')
      value = variables.get('set_value')
  
      if option in SET_COMMANDS:
          # Call the correct handler.
          if option in SET_COMMANDS_TAKING_VALUE:
              SET_COMMANDS[option](editor, value)
          else:
              SET_COMMANDS[option](editor)
      else:
          editor.show_message('Unknown option: %s' % option)
docs: Execute a ':set' command.