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Add commentary for fix in PR#442

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This commit is contained in:
Mark Haines 2015-12-14 14:50:51 +00:00
parent 15e9885197
commit 28c5181dfe
1 changed files with 6 additions and 0 deletions
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6
synapse/rest/client/v2_alpha/sync.py
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@ -356,6 +356,12 @@ class SyncRestServlet(RestServlet):
prev_content = timeline_event.unsigned.get('prev_content')
prev_sender = timeline_event.unsigned.get('prev_sender')
# Empircally it seems possible for the event to have a
# "replaces_state" key but not a prev_content or prev_sender
# markjh conjectures that it could be due to the server not
# having a copy of that event.
# If this is the case the we ignore the previous event. This will
# cause the displayname calculations on the client to be incorrect
if prev_event_id is None or not prev_content or not prev_sender:
del result[event_key]
else: