return false, err
	}
	return hasCombinedTypes || len(args) > 1, nil
}

// expandIfFilePattern returns all the filenames that match the input pattern
// or the filename if it is a specific filename and not a pattern.
// If the input is a pattern and it yields no result it will result in an error.
func expandIfFilePattern(pattern string) ([]string, error) {
	if _, err := os.Stat(pattern); os.IsNotExist(err) {