code: def main(verbose, **kwargs):
      
      config = kwargs['config']
  
      if not config and not kwargs['regex_path']:
          click.echo('Must either provide a path or a viable repex config file.')
          sys.exit(1)
  
      if verbose:
          set_verbose()
  
      if config:
          repex_vars = _build_vars_dict(kwargs['vars_file'], kwargs['var'])
          try:
              iterate(
                  config_file_path=config,
                  variables=repex_vars,
                  tags=list(kwargs['tag']),
                  validate=kwargs['validate'],
                  validate_only=kwargs['validate_only'],
                  with_diff=kwargs['diff'])
          except (RepexError, IOError, OSError) as ex:
              sys.exit(str(ex))
      else:
          pathobj = _construct_path_object(**kwargs)
          try:
              handle_path(pathobj)
          except (RepexError, IOError, OSError) as ex:
              sys.exit(str(ex))
docs: Replace strings in one or multiple files.
  
      You must either provide `REGEX_PATH` or use the `-c` flag
      to provide a valid repex configuration.
  
      `REGEX_PATH` can be: a regex of paths under `basedir`,
      a path to a single directory under `basedir`,
      or a path to a single file.
  
      It's important to note that if the `REGEX_PATH` is a path to a
      directory, the `-t,--ftype` flag must be provided.