+ if (! (notmuch->features & NOTMUCH_FEATURE_GHOSTS)) {
+ /* In general, it shouldn't be necessary to link children,
+ * since the earlier indexing of those children will have
+ * stored a thread ID for the missing parent. However, prior
+ * to ghost messages, these stored thread IDs were NOT
+ * rewritten during thread merging (and there was no
+ * performant way to do so), so if indexed children were
+ * pulled into a different thread ID by a merge, it was
+ * necessary to pull them *back* into the stored thread ID of
+ * the parent. With ghost messages, we just rewrite the
+ * stored thread IDs during merging, so this workaround isn't
+ * necessary. */
+ status = _notmuch_database_link_message_to_children (notmuch, message,
+ &thread_id);
+ if (status)
+ goto DONE;
+ }