How to get a list of backed-up files for an app?

[o-alquimista]

Some apps don't make it clear whether they allow Android Backup or not. Some say they do, but they don't (I file an issue); some say they don't, but they do (I file an issue to let them know).

Getting a list of backed-up files for each app would eliminate the uncertainty.

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OFF-TOPIC: I find that a lot of maintainers associate Android Backup with Google Drive (as you can see in the Syncthing issue linked above), and therefore demonize it and block it completely. It's really sad.

The Wireguard Android app, for example, forbids Android Backup and proceeds to dump its configuration full of private keys unencrypted into your internal storage — something I would never have expected from such an important security software.

[grote]

There may be technical means to peak into the app's backup data, but I am not sure we should do this. Also normal users can't know what these files mean and even programmers can't always know what is in those files. So not sure all this would help. What we give you is the size of the backup for each app so that's the best approximation I'd say. Ultimately, you'll have to test a backup to make sure it is working as expected.