Misc clarifications to threading MSCs #3899
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This was referenced Sep 27, 2022
clokep
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Sep 27, 2022
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| * `latest_event`: The most recent event (topologically) which relates to this event, with | ||
| `rel_type` of `m.thread`. Events sent by [ignored users](https://spec.matrix.org/v1.3/client-server-api/#ignoring-users) | ||
| are not considered for the latest event. |
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We discussed this over Matrix, it makes sense to make this explicit here, but it really is just following the guidance of MSC2675:
Information about relations sent from ignored users must never be sent to the client, either in aggregations or discrete relation events. This is to let you block someone from harassing you with emoji reactions (or using edits as a side-channel to harass you). Therefore, it is possible that different users will see different aggregations (a different last edit, or a different reaction count) on an event.
erikjohnston
approved these changes
Sep 27, 2022
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This is reviewable commit-by-commit
In this PR we cover some of the nuances discovered while writing the actual spec for threads.
Synapse/implementation proof: