Remove `boxes/added-in-paragraph` shortcode (#1970)

assets/scss/_styles_project.scss

@@ -277,29 +277,6 @@ footer {
     border-left-width: 5px;
     background: $warning-background;
   }
-
-  // XXX: See the added-in-paragraph.html shortcode for more information on these styles.
-  &.added-in-paragraph {
-    // Remove the padding and margin to remove the box look
-    margin: 0 !important; // !important on both to override table-related rules
-    padding: 0 !important;
-
-    // Make pairs of "added-in" and content inline to each other. We do pairs so authors can
-    // describe two paragraphs with added-in prefixes within a single box, reducing DOM
-    // complexity. Each paragraph is expected to be prefixed with an added-in, however.
-    //
-    // XXX: We assume the added-in and text will be rendered as paragraph elements.
-    > p {
-      display: inline;
-    }
-    > p:nth-child(2n) { // "even" rule to target just the content paragraphs
-      // Force a paragraph break after the content (insert a couple <br /> tags)
-      &::after {
-        content: '\A\A';
-        white-space: pre;
-      }
-    }
-  }
 }
 
 /* Styles for sections that are rendered from data, such as HTTP APIs and event schemas */

changelogs/internal/newsfragments/1970.clarification

@@ -0,0 +1 @@
+Remove `boxes/added-in-paragraph` shortcode.

content/client-server-api/modules/content_repo.md

@@ -16,21 +16,17 @@ When serving content, the server SHOULD provide a
 `Content-Security-Policy` header. The recommended policy is
 `sandbox; default-src 'none'; script-src 'none'; plugin-types application/pdf; style-src 'unsafe-inline'; object-src 'self';`.
 
-{{% boxes/added-in-paragraph %}}
 {{< added-in v="1.4" >}} The server SHOULD additionally provide
 `Cross-Origin-Resource-Policy: cross-origin` when serving content to allow
 (web) clients to access restricted APIs such as `SharedArrayBuffer` when
 interacting with the media repository.
-{{% /boxes/added-in-paragraph %}}
 
-{{% boxes/added-in-paragraph %}}
 {{< changed-in v="1.11" >}} The unauthenticated download endpoints have been
 deprecated in favour of newer, authenticated, ones. This change includes updating
 the paths of all media endpoints from `/_matrix/media/*` to `/_matrix/client/{version}/media/*`,
 with the exception of the `/upload` and `/create` endpoints. The upload/create
 endpoints are expected to undergo a similar transition in a later version of the
 specification.
-{{% /boxes/added-in-paragraph %}}
 
 #### Matrix Content (`mxc://`) URIs
 
@@ -48,11 +44,9 @@ mxc://<server-name>/<media-id>
 
 Clients can access the content repository using the following endpoints.
 
-{{% boxes/added-in-paragraph %}}
 {{< changed-in v="1.11" >}} A number of endpoints under the /_matrix/media hierarchy
 have been deprecated and replaced with new endpoints which require authentication.
 The deprecated endpoints are marked in the section below.
-{{% /boxes/added-in-paragraph %}}
 
 {{% boxes/warning %}}
 By Matrix 1.12, servers SHOULD "freeze" the deprecated, unauthenticated, endpoints

content/server-server-api.md

@@ -1204,7 +1204,6 @@ Servers MUST use the server described in the [Matrix Content URI](/client-server
 Formatted as `mxc://{ServerName}/{MediaID}`, servers MUST download the media from
 `ServerName` using the below endpoints.
 
-{{% boxes/added-in-paragraph %}}
 {{< changed-in v="1.11" >}} Servers were previously advised to use the `/_matrix/media/*`
 endpoints described by the [Content Repository module in the Client-Server API](/client-server-api/#content-repository),
 however, those endpoints have been deprecated. New endpoints are introduced which
@@ -1213,7 +1212,6 @@ the required access token to those endpoints. Instead, servers MUST try the endp
 described below before falling back to the deprecated `/_matrix/media/*` endpoints
 when they receive a `404 M_UNRECOGNIZED` error. When falling back, servers MUST
 be sure to set `allow_remote` to `false`.
-{{% /boxes/added-in-paragraph %}}
 
 {{% http-api spec="server-server" api="content_repository" %}}
 

layouts/shortcodes/boxes/added-in-paragraph.html

@@ -1,22 +0,0 @@
-{{/*
-
-    "Temporary" shortcode for rendering paragraphs which want/need inline added-in tags. It is
-    assumed that your content is described as follows:
-
-    {{% boxes/added-in-paragraph %}}
-    {{< added-in v="1.4" >}} Your text here
-
-    {{< added-in v="1.4" >}} Your other text here
-    {{% /boxes/added-in-paragraph %}}
-
-    The assumption is that at a later date this added-in-paragraph shortcode can be removed, making
-    the angle bracket-defined added-in shortcodes *just work*.
-
-    It is important that each new "content" paragraph (the bit after added-in) is preceded with
-    and added-in, otherwise you might find your text being weirdly merged.
-
-    This exists while the added-in shortcode cannot be inline in the client-server spec.
-    See https://github.com/matrix-org/matrix-spec/issues/1204
-
-*/}}
-{{ partial "alert" (dict "type" "added-in-paragraph" "content" .Inner) }}