sync seems to ignore --exclude-dir-regex

[willbprog127]

Greetings,

While using the sync command on b2-windows version 4.1.0 on Windows 11 (x86_64), the program gives an error message when it hits a directory it cannot access, even when that directory is in --exclude-dir-regex.

Command-line (run in terminal as an administrator):

b2-windows.exe sync --skip-newer --threads 1 --destination-server-side-encryption=SSE-C --no-progress --exclude-all-symlinks --exclude-dir-regex=".*\\Users\\Temp|.*\\Default User|.*\\Users\\Default" --keep-days 60 "C:\Users" b2:bucketname/syncs/lap-24/C/Users

I receive this error

Traceback (most recent call last):
  File "b2\_internal\b2v4\__main__.py", line 13, in <module>
  File "b2\_internal\console_tool.py", line 5529, in main
  File "b2\_internal\console_tool.py", line 5402, in run_command
  File "b2\_internal\console_tool.py", line 1070, in run
  File "b2\_internal\console_tool.py", line 3165, in _run
  File "b2sdk\_internal\sync\sync.py", line 214, in sync_folders
  File "b2sdk\_internal\sync\sync.py", line 263, in _make_folder_sync_actions
  File "b2sdk\_internal\scan\scan.py", line 48, in zip_folders
  File "b2sdk\_internal\scan\folder.py", line 152, in all_files
  File "b2sdk\_internal\scan\folder.py", line 258, in _walk_relative_paths
  File "b2sdk\_internal\scan\folder.py", line 258, in _walk_relative_paths
  File "b2sdk\_internal\scan\folder.py", line 258, in _walk_relative_paths
  [Previous line repeated 1 more time]
  File "b2sdk\_internal\scan\folder.py", line 239, in _walk_relative_paths
  File "pathlib.py", line 1056, in iterdir
PermissionError: [WinError 5] Access is denied: '\\\\?\\C:\\Users\\Default\\AppData\\Local\\Application Data'
[6520] Failed to execute script '__main__' due to unhandled exception!

When testing the regex in a web-tester, it appears to be correct

The program shouldn't be attempting to access a subdirectory of an excluded directory. According to the command-line tool documentation:

When a directory is excluded by using --exclude-dir-regex, all of the files within it are excluded, even if they match an --include-regex pattern. This means that there is no need to look inside excluded directories, and you can exclude directories containing files for which you don’t have read permission and avoid getting errors.

Thanks 👍