Is there an existing issue for this?

• I checked and did not find my issue in the already reported ones

Describe the bug

When darktable's library contains images located in folders with Cyrillic (or other non-ASCII) names, running the script with --purge removes those images from the library even though they exist on disk and display correctly in Darktable. After the script runs, valid photos disappear from the library.

Steps to reproduce

1. I created the following images:

   • D:\Darktable Test\Latin folder name example\Latin file name example.JPG

   • D:\Darktable Test\Latin folder name example\Приклад назви файлу кирилицею.JPG

   • D:\Darktable Test\Latin folder name example\Some missing image.JPG

   • D:\Darktable Test\Приклад назви папки кирилицею\Latin file name example.JPG

   • D:\Darktable Test\Приклад назви папки кирилицею\Приклад назви файлу кирилицею.JPG

   • D:\Darktable Test\Приклад назви папки кирилицею\Some missing image.JPG

2. Added all those images to my Darktable library.

3. Deleted the D:\Darktable Test\Latin folder name example\Some missing image.JPG and the D:\Darktable Test\Приклад назви папки кирилицею\Some missing image.JPG and regenerated thumbnails to make some non-existing images.

4. Close the Darktable.
5. Run the purge_nonexistent_images.bat script by opening command line in darktable\share\darktable\tools folder and running purge_nonexistent_images.bat -p

(to get this screenshot I had to screen-record, because after finishing - the cmd window immediately disappears, but we're here not for that)
6. Open the Darktable and we can see that only one image left, which is the only image that didn't have cyrillic symbols in the path.

Expected behavior

Only images whose files are genuinely absent from disk should be removed from the library. Images in Cyrillic-named folders that exist on disk must not be touched.

Logfile | Screenshot | Screencast

Commit

No response

Where did you obtain darktable from?

darktable.org / GitHub release

darktable version

5.4.1

What OS are you using?

Windows

What is the version of your OS?

Windows 10 Pro 22H2 19045.7184

Describe your system

CPU: Intel Xeon X3440
RAM: 16Gb

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

Nvidia Geforce GTX 660, Driver version 456.71

Please provide additional context if applicable. You can attach files too, but might need to rename to .txt or .zip

• The reproduce above was done on a clear database
• A "regenerate thumbnails" lua script was used