From 17f68048374cda8bc639d7c048ae21624a124635 Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Date: Tue, 21 May 2019 16:22:54 +0100
Subject: [PATCH] Introduce room v4 which updates event ID format. (#5217)

Implements https://github.com/matrix-org/matrix-doc/pull/2002.
---
 changelog.d/5210.feature     | 2 +-
 changelog.d/5217.feature     | 1 +
 synapse/api/room_versions.py | 8 ++++----
 3 files changed, 6 insertions(+), 5 deletions(-)
 create mode 100644 changelog.d/5217.feature

diff --git a/changelog.d/5210.feature b/changelog.d/5210.feature
index a7476bf9b9..c78325a6ac 100644
--- a/changelog.d/5210.feature
+++ b/changelog.d/5210.feature
@@ -1 +1 @@
-Add a new room version which uses a new event ID format.
+Add a room version 4 which uses a new event ID format, as per [MSC2002](https://github.com/matrix-org/matrix-doc/pull/2002).
diff --git a/changelog.d/5217.feature b/changelog.d/5217.feature
new file mode 100644
index 0000000000..c78325a6ac
--- /dev/null
+++ b/changelog.d/5217.feature
@@ -0,0 +1 @@
+Add a room version 4 which uses a new event ID format, as per [MSC2002](https://github.com/matrix-org/matrix-doc/pull/2002).
diff --git a/synapse/api/room_versions.py b/synapse/api/room_versions.py
index 485b3d0237..b2895355a8 100644
--- a/synapse/api/room_versions.py
+++ b/synapse/api/room_versions.py
@@ -77,9 +77,9 @@ class RoomVersions(object):
         EventFormatVersions.V2,
         StateResolutionVersions.V2,
     )
-    EVENTID_NOSLASH_TEST = RoomVersion(
-        "eventid-noslash-test",
-        RoomDisposition.UNSTABLE,
+    V4 = RoomVersion(
+        "4",
+        RoomDisposition.STABLE,
         EventFormatVersions.V3,
         StateResolutionVersions.V2,
     )
@@ -95,6 +95,6 @@ KNOWN_ROOM_VERSIONS = {
         RoomVersions.V2,
         RoomVersions.V3,
         RoomVersions.STATE_V2_TEST,
-        RoomVersions.EVENTID_NOSLASH_TEST,
+        RoomVersions.V4,
     )
 }   # type: dict[str, RoomVersion]