                            actions.FilesFullPaths,
                            actions.DirOrFileFullPaths,
                            actions.SaveFileFullPaths,
                            actions.ContextFullPaths):
              return None
  
          retval = {}
 
</s> remove                          filter_files: Optional[Union[str, List[str]]],
                         nfilter_files: Optional[Union[str, List[str]]]) -> Tuple[List[str],
                                                                                  List[str]]:
 </s> add                          filter_files: Optional[List[str]],
                         nfilter_files: Optional[List[str]]) -> Tuple[List[str], List[str]]: </s> remove             filt_files = [files] if isinstance(files, str) else files
            filt_files = [] if filt_files is None else filt_files
 </s> add             if isinstance(files, list) and len(files) == 1 and os.path.isdir(files[0]):
                # Get images from folder, if folder passed in
                dirname = files[0]
                files = [os.path.join(dirname, fname)
                         for fname in os.listdir(dirname)
                         if os.path.splitext(fname)[-1].lower() in _image_extensions]
                logger.debug("Collected files from folder '%s': %s", dirname,
                             [os.path.basename(f) for f in files])

            filt_files = [] if files is None else files </s> remove         logger.info("Identity filtered: (%s)", self._counts)
 </s> add         logger.info("Identity filtered (%s): %s", self._threshold, self._counts) </s> remove             logger.info("'%s' not a png. Returning empty array", filename)
 </s> add             logger.debug("'%s' not a png. Returning empty array", filename)
                          actions.DirOrFilesFullPaths,
                            actions.FilesFullPaths,
                            actions.DirOrFileFullPaths,
                          actions.DirOrFilesFullPaths,
                            actions.SaveFileFullPaths,
                            actions.ContextFullPaths):
              return None
  
          retval = {}
keep add keep keep keep keep keep
 Face-filter updates:
  - Allow selecting folder as well as multiple images
  - Lower default threshold and update helptext
  - bugfix: detector error when using all aligned faces
  - Standardize output folder name 
lib/gui/options.py