code: def _normalize_fname_suffixes(suffixes):
      if suffixes == [".tgz"]:
          suffixes = [".tar", ".gz"]
      elif suffixes == [".tbz2"]:
          suffixes = [".tar", ".bzip2"]
      return suffixes
  
imports: from datalad.support.external_versions import external_versions
  from datalad.utils import Path, join_cmdline, quote_cmdlinearg
  import logging
  from datalad.cmd import WitlessRunner, KillOutput
label_desc: Use image node_id 1 for calling a global function with example usage: _normalize_fname_suffixes(suffixes) and returns: suffixes