code: def parse_command_line_arguments(argparse_parser, init_indent=5, subs_indent=5,
                                   line_width=76):
      
      # Redirect stdout and stderr to prettify help or usage output from argparse.
      old_stdout = sys.stdout # save stdout
      old_stderr = sys.stderr # save stderr
      sys.stdout = RedirectHelp(sys.stdout, help_string_replacement_pairs,
              init_indent, subs_indent, line_width) # redirect stdout to add postprocessor
      sys.stderr = RedirectHelp(sys.stderr, help_string_replacement_pairs,
              init_indent, subs_indent, line_width) # redirect stderr to add postprocessor
  
      # Run the actual argument-parsing operation via argparse.
      args = argparse_parser.parse_args()
  
      # The argparse class has finished its argument-processing, so now no more
      # usage or help messages will be printed.  So restore stdout and stderr
      # to their usual settings, except with self-flushing added.
      sys.stdout = SelfFlushingOutstream(old_stdout)
      sys.stderr = SelfFlushingOutstream(old_stderr)
  
      return args
docs: Main routine to call to execute the command parsing.  Returns an object
      from argparse's parse_args() routine.