Jonathan Tan <jonathantanmy@xxxxxxxxxx> writes: > As part of this, index-pack has to output (1) the hash that goes into > the name of the .pack/.idx file and (2) the hashes of all dangling > .gitmodules. I just had (2) come after (1). If anyone has a better idea, > I'm interested. I have this feeling that the "blobs that need to be validated across packs" will *not* be the last enhancement we'd need to make to the output from index-pack to allow richer communication between it and its invoker. While there is no reason to change how the first line of the output looks like, we'd probably want to make sure that the future versions of Git can easily tell "list of blobs that require further validation" from other additional information. I am not comfortable to recommend "ok, then let's add a delimiter line '---\n' if/when we need to have something after the list of blobs and append more stuff in future versions of Git", because we may find need to emit new kinds of info before the list of blobs that needs further validation, for example, in future versions of Git. Having said all that, the internal communication between the index-pack and its caller do not need as much care about compatibility across versions as output visible to end-users, so when a future version of Git needs to send different kinds of information in different order from what you created here, we can do so pretty much freely, I would guess. Thanks.