Merge 3c17aa3789 into 67a2aa4761

* Specify a correct spelling for "display name"

* RST uses double-backticks

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/2189.clarification

@@ -0,0 +1 @@
+Specify a correct spelling for "display name".

data/api/client-server/sync.yaml

@@ -310,8 +310,14 @@ 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
@@ -335,8 +341,14 @@ 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
@@ -548,6 +560,8 @@ paths:
                                 "sender": "@alice:example.com",
                                 "type": "m.room.member",
                                 "state_key": "@bob:example.com",
+                                "event_id": "$19dl9d3848dJLle:example.com",
+                                "origin_server_ts": 1432735439654,
                                 "content": {
                                   "membership": "invite"
                                 }
@@ -572,6 +586,8 @@ paths:
                                 "sender": "@bob:example.com",
                                 "type": "m.room.member",
                                 "state_key": "@bob:example.com",
+                                "event_id": "$Fg83Kl3764di23a:example.com",
+                                "origin_server_ts": 143273039402,
                                 "content": {
                                   "membership": "knock"
                                 }

meta/documentation_style.rst

@@ -60,6 +60,11 @@ General
      you have at home. "identity server" is clear, whereas "identityserver" is
      horrible.
 
+* When talking about a user's "display name", it is spelt as two words. In
+  identifiers such as within the content of an ``m.room.member`` event, it is
+  spelt as a single word, ``displayname``. (There are some historical exceptions
+  to this where the identifier is spelt ``display_name``.)
+
 * Lists should:
 
   * Be introduced with a colon.
@@ -84,12 +89,12 @@ Changes between spec versions
 Sections should reference the Matrix spec version they were added/changed in. This
 is often a guess at what the next version will be - please use the currently released
 version with a minor version bump as the referenced version. For example, if the
-current version is `v1.1` then annotate your changes with `v1.2`.
+current version is ``v1.1`` then annotate your changes with ``v1.2``.
 
 "Added/changed in" tags can be documented as the following:
 
-* `{{% added-in v="1.2" %}}` or `{{% changed-in v="1.2" %}}` within Markdown documents.
-* `x-addedInMatrixVersion` and `x-changedInMatrixVersion` within OpenAPI.
+* ``{{% added-in v="1.2" %}}`` or ``{{% changed-in v="1.2" %}}`` within Markdown documents.
+* ``x-addedInMatrixVersion`` and ``x-changedInMatrixVersion`` within OpenAPI.
 
 OpenAPI
 ~~~~~~~
@@ -185,4 +190,4 @@ Describing grammar
 
 Use  `RFC5234-style ABNF <https://datatracker.ietf.org/doc/html/rfc5234>`_ when describing
 the grammar for something in the spec, such as user IDs or server names. Use lowercase
-and underscore-delimited element names (`user_id`, not `UserID` or `user-id`).
+and underscore-delimited element names (``user_id``, not ``UserID`` or ``user-id``).