Merge 3c17aa3789 into d1a51f7b8c

Co-authored-by: Andrew Morgan <andrew@amorgan.xyz>

changelogs/client_server/newsfragments/2181.clarification

@@ -0,0 +1,2 @@
+Clarify that the stripped state in `invite_state` and `knock_state` in `GET /sync` response must
+include the full `m.room.member` event of the user.

changelogs/internal/newsfragments/2205.clarification

@@ -0,0 +1 @@
+Fix a grammatical typo on the Matrix Spec Process documentation page.

content/proposals.md

@@ -555,7 +555,7 @@ resolve to the desired MSC, whether it started as an issue or a PR.
 Other metadata:
 
 -   The MSC number is taken from the GitHub Pull Request ID. This is
-    carried for the lifetime of the proposal. These IDs do not necessary
+    carried for the lifetime of the proposal. These IDs do not necessarily
     represent a chronological order.
 -   The GitHub PR title will act as the MSC's title.
 -   Please link to the spec PR (if any) by adding a "PRs: \#1234" line

data/api/client-server/sync.yaml

@@ -369,8 +369,14 @@ paths:
                                     description: |-
                                       The [stripped state events](/client-server-api/#stripped-state) that form the
                                       invite state.
+
+                                      MUST also include the `m.room.member` event of the user with a membership of
+                                      `invite`, and using the same event format as joined rooms with the `event_id`
+                                      and `origin_server_ts` fields.
                                     items:
-                                      $ref: ../../event-schemas/schema/core-event-schema/stripped_state.yaml
+                                      anyOf:
+                                        - $ref: ../../event-schemas/schema/core-event-schema/stripped_state.yaml
+                                        - $ref: definitions/client_event_without_room_id.yaml
                                     type: array
                       knock:
                         title: Knocked rooms
@@ -394,8 +400,14 @@ paths:
                                     description: |-
                                       The [stripped state events](/client-server-api/#stripped-state) that form the
                                       knock state.
+
+                                      MUST also include the `m.room.member` event of the user with a membership of
+                                      `knock`, and using the same event format as joined rooms with the `event_id` and
+                                      `origin_server_ts` fields.
                                     items:
-                                      $ref: ../../event-schemas/schema/core-event-schema/stripped_state.yaml
+                                      anyOf:
+                                        - $ref: ../../event-schemas/schema/core-event-schema/stripped_state.yaml
+                                        - $ref: definitions/client_event_without_room_id.yaml
                                     type: array
                       leave:
                         title: Left rooms
@@ -628,6 +640,8 @@ paths:
                                 "sender": "@alice:example.com",
                                 "type": "m.room.member",
                                 "state_key": "@bob:example.com",
+                                "event_id": "$19dl9d3848dJLle:example.com",
+                                "origin_server_ts": 1432735439654,
                                 "content": {
                                   "membership": "invite"
                                 }
@@ -652,6 +666,8 @@ paths:
                                 "sender": "@bob:example.com",
                                 "type": "m.room.member",
                                 "state_key": "@bob:example.com",
+                                "event_id": "$Fg83Kl3764di23a:example.com",
+                                "origin_server_ts": 143273039402,
                                 "content": {
                                   "membership": "knock"
                                 }