automatic "apply_camera_style.lua" does not process (Pentax) DNG files

Describe the bug

• I activated the "official/apply_camera_style.lua"
• it works for e.g. Samsung NX500 *.SRW files
• it does not process Pentax *.DNG files

Steps to reproduce

1. Activate "official/apply_camera_style.lua"
2. Import a Pentax *.DNG file
3. The existing camera style is not applied

Expected behavior

apply the resp. camera style

Logfile | Screenshot | Screencast

When running with "-d lua", there is no output from "apply_camera_style.lua" when *.DNG is imported, so no log available. A good log output is seen for *.SRW.

Commit

No response

Where did you obtain darktable from?

self compiled

darktable version

5.0.0

What OS are you using?

Linux

What is the version of your OS?

Debian 12

Describe your system?

No response

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

Nvidia

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

The reason for this behavior is the "if image.is_raw then" condition in the "function(event, image)" which is registered as a post-import-image hook. "image.is_raw" seems to be "false" for (Pentax) *.DNG files, but they are raw for sure.

I have commented it out:

dt.register_event(MODULE, "post-import-image",
function(event, image)
-- if image.is_raw then
table.insert(acs.imported_images, image)
-- end
end
)

Now it works for me, but it's a quick-and-dirty fix only.

Start in official/apply_camera_style.lua, especially the post-import-image hook and its image.is_raw check; compare behavior for Pentax DNG and Samsung SRW imports. Reproduce with -d lua and verify that importing a Pentax DNG applies the existing camera style without regressing SRW handling.