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Chris LuandGitHub
c392f45705
Deleting the only object under a prefix in a versioned bucket writes a delete marker and keeps the version history, so the filer directory survives with nothing a current-version listing would return. A delimited ListObjects kept reporting that path in CommonPrefixes, because the prefixes come from the directory tree rather than from the keys, while a listing scoped inside the prefix correctly came back empty. Probe a directory before reporting it: one that holds entries but no key the listing returns is neither a CommonPrefix nor a path the trailing-slash probe answers for. Empty directories keep the meaning they have today, and the probe only runs for buckets with versioning configured, the only ones that can reach this state.