diff options
Diffstat (limited to 'synapse/events/snapshot.py')
| -rw-r--r-- | synapse/events/snapshot.py | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/synapse/events/snapshot.py b/synapse/events/snapshot.py index 9ea85e93e6..7c5f620d09 100644 --- a/synapse/events/snapshot.py +++ b/synapse/events/snapshot.py @@ -322,11 +322,14 @@ class _AsyncEventContextImpl(EventContext): self._current_state_ids = yield self._storage.state.get_state_ids_for_group( self.state_group ) - if self._prev_state_id and self._event_state_key is not None: + if self._event_state_key is not None: self._prev_state_ids = dict(self._current_state_ids) key = (self._event_type, self._event_state_key) - self._prev_state_ids[key] = self._prev_state_id + if self._prev_state_id: + self._prev_state_ids[key] = self._prev_state_id + else: + self._prev_state_ids.pop(key, None) else: self._prev_state_ids = self._current_state_ids |