fix case when file has '__' in base name

post_processing.py

@@ -102,7 +102,7 @@ def replace_files(uncompressed_dir_path, original_files_dir_path):
                     # directories already exists
                     pass
                 
-                if "__" in header_line: # means the file is a split file that needs to be merged with the corresponding other split files
+                if "__" in header_line and "/" in header_line: # means the file is a split file that needs to be merged with the corresponding other split files
                     subfile_number_str, subfile_total_str = header_line.split("__")[1].split("/") # get the number of splits and the split index for this subfile
                     subfile_number, subfile_total = int(subfile_number_str), int(subfile_total_str) # warning, subfile count starts from 1