Jeff King <p...@peff.net> writes: > Right, I'd agree they probably want the minimum for that traversal. And > for `rev-list --filter`, that's probably OK. But keep in mind the main > goal for --filter is using it for fetches, and many servers do not > perform the traversal at all. Instead they use reachability bitmaps to > come up with the set of objects to send. The bitmaps have enough > information to say "remove all trees from the set", but not enough to do > any kind of depth-based calculation (not even "is this a root tree").
If the depth-based cutoff turns out to make sense (on which I haven't formed an opinion yet), newer version of pack bitmaps could store that information ;-) How are these "fitler" expressions negotiated between the fetcher and uploader? Does a "fetch-patch" say "am I allowed to ask you to filter with tree:4?" and refrain from using the option when "upload-pack" says "no"?
