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Spec PR - MSC4142: Remove unintentional intentional mentions in replies #2210

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merged 3 commits into from
Sep 16, 2025
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Spec PR - MSC4142: Remove unintentional intentional mentions in replies #2210

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0fbdf3e
Remove unintentional intentional mentions in replies as per MSC4142
Johennes Sep 16, 2025
3f45e10
Add changelog
Johennes Sep 16, 2025
19c7e3d
Add changed-in note
Johennes Sep 16, 2025
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1 change: 1 addition & 0 deletions changelogs/client_server/newsfragments/2210.removal
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Remove unintentional intentional mentions in replies as per [MSC4142](https://github.com/matrix-org/matrix-spec-proposals/pull/4142).
15 changes: 9 additions & 6 deletions content/client-server-api/modules/rich_replies.md
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Expand Up @@ -64,11 +64,16 @@ as if it were to be under `m.relates_to` directly instead.

#### Mentioning the replied to user

In order to notify users of the reply, it may be desirable to include the `sender`
of the replied to event and any users mentioned in that event. See
[user and room mentions](#user-and-room-mentions) for additional information.
{{% boxes/note %}}
{{% changed-in v="1.16" %}}
Clients SHOULD no longer propagate mentioned users in the replied to event.
{{% /boxes/note %}}

In order to notify users of the reply, it MAY be desirable to include the `sender`
of the replied to event. See [user and room mentions](#user-and-room-mentions) for
additional information.

An example including mentioning the original sender and other users:
An example including mentioning the original sender:

```json
{
Expand All @@ -83,8 +88,6 @@ An example including mentioning the original sender and other users:
"user_ids": [
// The sender of $another_event.
"@alice:example.org",
// Another Matrix ID copied from the m.mentions property of $another_event.
"@bob:example.org"
]
}
},
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