.

wcfs/δbtail.go

@@ -1680,8 +1680,13 @@ func (δBtail *ΔBtail) GetAt(ctx context.Context, root *Tree, key Key, at zodb.
 // XXX root -> *Tree ?
 func (δBtail *ΔBtail) SliceByRootRev(root zodb.Oid, lo, hi zodb.Tid) /*readonly*/[]ΔTree {
 	δassertSlice(δBtail, lo, hi)
-	return []ΔTree{} // XXX stub
-	panic("TODO")
+	// XXX locking
+	δTtail, ok := δBtail.byRoot[root]
+	if !ok {
+		return []ΔTree{}
+	}
+	// XXX dup data - because they can be further rebuild in parallel to caller using them
+	return δTtail.vδT // FIXME process lo, hi
 }