hunk.code_window:     """Obtain a certificate and install."""
       try:
           installer, authenticator = choose_configurator_plugins(args, config, plugins, "run")
       except errors.PluginSelectionError, e:
           return e.message
       domains = _find_domains(config, installer)
  
hunk.labels: keep keep keep replace keep keep keep keep
hunk.after_edit:     except errors.PluginSelectionError as e:
  
hunk.file_path: letsencrypt/cli.py
hunk.type: replace
file: ===============
  Packaging Guide
  ===============
  
  Documentation can be found at
  https://github.com/letsencrypt/letsencrypt/wiki/Packaging.
  