This achieves nothing other than putting some doubt and confusion to rest in flathub when people open PRs to switch appid -> id and the docs have no mention of it anywhere.
As far as I can tell, this is the primary source and the only place app-id/id is mentioned in the context of a manifest. There are some other minor examples that need to be switched to id in the flatpak-docs repo. I'll handle that. I didn't see app-id being used in the context of manifest in the flatpak repo.
This was soft deprecated in https://github.com/flatpak/flatpak-builder/commit/3341fb08adc981879043445e8c40883786705738#diff-fe51491bafa983ec48ccdaa2da758238ee9d5623e20cea285cae410d22dd645dR73, https://github.com/flatpak/flatpak-builder/commit/3341fb08adc981879043445e8c40883786705738#diff-fe51491bafa983ec48ccdaa2da758238ee9d5623e20cea285cae410d22dd645dR359-R365 in favour of "id" which aligns with appstream https://github.com/ximion/appstream/commit/8b412031037ea08028279e9408ea0eda01938c48
This achieves nothing other than putting some doubt and confusion to rest in flathub when people open PRs to switch appid -> id and the docs have no mention of it anywhere.
As far as I can tell, this is the primary source and the only place app-id/id is mentioned in the context of a manifest. There are some other minor examples that need to be switched to id in the flatpak-docs repo. I'll handle that. I didn't see app-id being used in the context of manifest in the flatpak repo.