Move stringy power levels to room versions

content/rooms/fragments/v1-deprecated-formatting-off-spec.md

@@ -0,0 +1,9 @@
+Events sent into rooms of this version can have formats which are different
+from their normal schema. Those cases are documented here.
+
+{{% boxes/warning %}}
+The behaviour described here is preserved strictly for backwards compatibility
+only. A homeserver should take reasonable precautions to prevent users from
+sending these so-called "malformed" events, and must never rely on the behaviours
+described here as a default.
+{{% /boxes/warning %}}

content/rooms/fragments/v1-stringy-power-levels.md

@@ -0,0 +1,15 @@
+##### Power levels accepted as strings
+
+In order to maintain backwards compatibility with early implementations,
+power levels can optionally be represented in string format instead of
+integer format. A homeserver must be prepared to deal with this by parsing
+the power level from a string. In these cases, the following formatting of the
+power level string is allowed:
+
+* a single Base10 integer, no float values or decimal points, optionally with
+  any number of leading zeroes (`"100"`, `"000100"`);
+* optionally with any number of leading or trailing whitespace characters (`" 100 "`,
+  `" 00100 "`);
+* optionally prefixed with a single `-` or `+` character before the integer
+  but after leading whitespace padding (`" +100 "`, `" -100 "`, `"+100"`,
+  `"-100"`).

content/rooms/v1.md

@@ -48,6 +48,12 @@ Events in version 1 rooms have the following structure:
 
 {{% definition path="api/server-server/definitions/pdu" %}}
 
+#### Deprecated formatting
+
+{{% rver-fragment name="v1-deprecated-formatting-off-spec" %}}
+
+{{% rver-fragment name="v1-stringy-power-levels" %}}
+
 ### Authorization rules
 
 {{% rver-fragment name="v1-auth-rules" %}}

content/rooms/v2.md

@@ -46,6 +46,12 @@ Events in rooms of this version have the following structure:
 
 {{% definition path="api/server-server/definitions/pdu" %}}
 
+#### Deprecated formatting
+
+{{% rver-fragment name="v1-deprecated-formatting-off-spec" %}}
+
+{{% rver-fragment name="v1-stringy-power-levels" %}}
+
 ### Authorization rules
 
 {{% rver-fragment name="v1-auth-rules" %}}

content/rooms/v3.md

@@ -81,6 +81,12 @@ The complete structure of a event in a v3 room is shown below.
 
 {{% definition path="api/server-server/definitions/pdu_v3" %}}
 
+#### Deprecated formatting
+
+{{% rver-fragment name="v1-deprecated-formatting-off-spec" %}}
+
+{{% rver-fragment name="v1-stringy-power-levels" %}}
+
 ### Authorization rules
 
 {{% added-in this=true %}} `m.room.redaction` events are no longer

content/rooms/v4.md

@@ -69,6 +69,12 @@ the changes in this room version.
 
 {{% rver-fragment name="v4-event-format" %}}
 
+#### Deprecated formatting
+
+{{% rver-fragment name="v1-deprecated-formatting-off-spec" %}}
+
+{{% rver-fragment name="v1-stringy-power-levels" %}}
+
 ### Authorization rules
 
 {{% rver-fragment name="v3-auth-rules" %}}

content/rooms/v5.md

@@ -51,6 +51,12 @@ completeness.
 
 {{% rver-fragment name="v4-event-format" %}}
 
+#### Deprecated formatting
+
+{{% rver-fragment name="v1-deprecated-formatting-off-spec" %}}
+
+{{% rver-fragment name="v1-stringy-power-levels" %}}
+
 ### Authorization rules
 
 {{% rver-fragment name="v3-auth-rules" %}}

content/rooms/v6.md

@@ -212,6 +212,12 @@ completeness.
 
 {{% rver-fragment name="v4-event-format" %}}
 
+#### Deprecated formatting
+
+{{% rver-fragment name="v1-deprecated-formatting-off-spec" %}}
+
+{{% rver-fragment name="v1-stringy-power-levels" %}}
+
 ### State resolution
 
 {{% rver-fragment name="v2-state-res" %}}

content/rooms/v7.md

@@ -205,6 +205,12 @@ completeness.
 
 {{% rver-fragment name="v4-event-format" %}}
 
+#### Deprecated formatting
+
+{{% rver-fragment name="v1-deprecated-formatting-off-spec" %}}
+
+{{% rver-fragment name="v1-stringy-power-levels" %}}
+
 ### State resolution
 
 {{% rver-fragment name="v2-state-res" %}}

content/rooms/v8.md

@@ -110,6 +110,12 @@ completeness.
 
 {{% rver-fragment name="v4-event-format" %}}
 
+#### Deprecated formatting
+
+{{% rver-fragment name="v1-deprecated-formatting-off-spec" %}}
+
+{{% rver-fragment name="v1-stringy-power-levels" %}}
+
 ### State resolution
 
 {{% rver-fragment name="v2-state-res" %}}

content/rooms/v9.md

@@ -102,6 +102,12 @@ completeness.
 
 {{% rver-fragment name="v4-event-format" %}}
 
+#### Deprecated formatting
+
+{{% rver-fragment name="v1-deprecated-formatting-off-spec" %}}
+
+{{% rver-fragment name="v1-stringy-power-levels" %}}
+
 ### Authorization rules
 
 {{% rver-fragment name="v8-auth-rules" %}}

content/server-server-api.md

@@ -394,22 +394,14 @@ unspecified.
 For an `m.room.member` state event, the user given by the `state_key` of
 the event.
 
-**Historical String Power Levels** \
-In order to maintain backwards compatibility with early implementations,
-power levels can optionally be represented in string format instead of
-integer format. A homeserver must be prepared to deal with this by parsing
-the power level from a string. In these cases, the following formatting of the
-power level string is allowed:
-
-- a single Base10 integer, no float values or decimal points, optionally with leading zeroes;
-- optionally with leading or trailing whitespace characters;
-- optionally prefixed with a single `-` or `+` character before the integer but after leading whitespace padding.
-
 {{% boxes/warning %}}
-This behaviour is preserved strictly for backward compatibility only. A
-homeserver should take reasonable precautions to prevent users from
-sending new power level events with string values and must never
-populate the default power levels in a room as string values.
+Some [room versions](/rooms) accept power level values to be represented as
+strings rather than integers. This is strictly for backwards compatibility.
+A homeserver should take reasonable precautions to prevent users from sending
+new power level events with string values (eg: by rejecting the API request),
+and must never populate the default power levels in a room as string values.
+
+See the [room version specification](/rooms) for more information.
 {{% /boxes/warning %}}
 
 #### Authorization rules