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houseme
e0eee89a3b
fix(ecstore): emit CommonPrefix for object with same-named prefix in non-recursive listings (backlog#1042) On single-disk / consistent deployments a non-recursive scan_dir that finds a/xl.meta classifies `a` as an object and does not descend, so the source never emits the prefix `a/`, dropping the CommonPrefix from delimiter listings even when `a/b` exists. This is the single-disk follow-up to backlog#880 (the multi-disk merge path was fixed in #4563). Fix: in the scan_dir Ok branch, for a non-recursive listing of a plain object, probe whether `a/` holds a listing entry other than the object itself (new object_prefix_has_sibling_listing_entry, reusing directory_has_visible_listing_entry and skipping the object's own xl.meta and data dirs); if so, additionally schedule the prefix dir `a/`. The upstream fold in from_meta_cache_entries_sorted_infos already emits object `a` as Contents and dir `a/` as a CommonPrefix, so nothing changes there. Leaf objects (the common case) pay a single list_dir and return false immediately. Verification: new scan_dir unit test (positive: `a` + `a/b` coexist; negative: leaf `c` produces no spurious `c/`); new end-to-end e2e (object `a` + `a/b` with delimiter "/" -> Contents `a` + CommonPrefix `a/`); existing list_objects_duplicates e2e (#1797 / #2439 regressions) stays green; set_disk::read 114 passed. Note: lib-test compilation depends on #4573 (now merged), which added the allow_inplace_legacy_fallback argument to the codec streaming arity tests after #4560 / backlog#879. Co-authored-by: heihutu <heihutu@gmail.com>