[Feature Request] Exclude paths from backup

[mid-kid]

Guidelines

• I have read the FAQ and it doesn't cover my request.
• I have searched the issue tracker for open and closed issues that are similar to the feature request I want to file, without success.
• I'm on the latest version.
• I'm not using a test build (alpha/beta/release-candidate).
• This issue contains only one feature request.

Problem Description

Some apps have big data files in their data. For example, with "OsmAnd~", the map files are hundreds of megabytes big, and they're stored in /sdcard/Android/data/net.osmand.plus/files along with track recordings and favourites.

I would like to have a per-app field that excludes files from both manual, automated and batch-backups. This would save me a lot of storage space currently being used by big data files from apps where I only care about favourites/user settings.

Proposed Solution

I need a field that allows me to exclude files from a back up. For example:

• "OsmAnd~": $extdata/files/*.obf: Exclude map files from OsmAnd
• "Termux": $data/files/usr: Exclude package manager-managed files from Termux (maybe with a way to allow usr/etc and usr/var to be backed up anyway?), while backing up user files in $data/files/home
• "Whatsapp": $data/files/decompressed: 70MB of natives from whatsapp that contain no user data.
• "Telegram": $data/files/cache4.db: Big cache file kept outside of the traditional cache directory.
• "Firefox": $data/files/mozilla/*/storage: Exclude site and extension storage, I only care about settings and bookmarks.

And so on and so forth

Where:

• $extdata is /sdcard/Android/data/
• $data is /data/data/

Alternatives Considered

The only alternative I can think of that I can do right now is to post-process the backups with a script or something. That's not ideal.

Relevant information

• Device: Pocophone F1
• Android Version: 15
• ROM: crDroid
• App's Version: 8.3.12