Christian Couder <christian.couder@xxxxxxxxx> writes: > When using the `--filter=<filter-spec>` option, `git pack-objects` will > omit some objects from the resulting packfile(s) it produces. It could > be useful to know about these omitted objects though. > > For example, we might want to write these objects into a separate > packfile by piping them into another `git pack-object` process. > Or we might want to check if these objects are available from a > promisor remote. > > Anyway, this patch implements a simple way to let us know about these > objects by simply printing their oid, one per line, on stdout when the > new `--print-filtered` flag is passed. Makes sense. It is a bit sad that we have to accumulate everything until the end at which time we have to dump the accumulated in bulk, but that is a current limitation of list-objects-filter API and not within the scope of this change. We may in the longer term want to see if we can make the collection of filtered-out objects streamable by replacing the .omits object array with a callback function, or do something along that line.
