code: def _format_description(ctx):
      
      help_string = ctx.command.help or ctx.command.short_help
      if not help_string:
          return
  
      bar_enabled = False
      for line in statemachine.string2lines(
              help_string, tab_width=4, convert_whitespace=True):
          if line == '\b':
              bar_enabled = True
              continue
          if line == '':
              bar_enabled = False
          line = '| ' + line if bar_enabled else line
          yield line
      yield ''
docs: Format the description for a given `click.Command`.
  
      We parse this as reStructuredText, allowing users to embed rich
      information in their help messages if they so choose.