.

wcfs/δftail.go

@@ -187,9 +187,15 @@ func (δFtail *ΔFtail) SliceByFileRev(file *BigFile, lo, hi zodb.Tid) /*readonl
 	//
 	// δFile	────────o───────o──────x─────x────────────────────────
 
+	vδZ := δFtail.δBtail.δZtail.SliceByRev(lo, hi)
+
+	// FIXME stub: assumes blktab topology does not change.
+	//       takes only ZBlk history into account.
+	var vδfile []Δfile
+
+/*
 	// XXX activate zfile?
 	vδT := δFtail.δBtail.SliceByRootRev(file.zfile.blktab, lo, hi)
-	vδZ := δFtail.δBtail.δZtail.SliceByRev(lo, hi)
 
 	// state of `{} blk -> zblk` as we are scanning ↓
 	δblktab := map[int64]struct {
@@ -217,8 +223,7 @@ func (δFtail *ΔFtail) SliceByFileRev(file *BigFile, lo, hi zodb.Tid) /*readonl
 			...
 		}
 	}
-
-	panic("TODO")
+*/
 
 }