matrix-spec/content/rooms/fragments/v4-event-ids.md
Richard van der Hoff b07fe504ed
Stop rendering CS modules and room version fragments as standalone pages (#1317)
This is actually doing two things:

 * creating `{fragments,modules}/index.md` turns the fragments and modules into
   page resources, rather than pages in their own right. We have to update the
   shortcodes to match.

 * adding `headless: true` means that we don't render the pages.

The net effect is that we don't render pages like
https://spec.matrix.org/v1.4/rooms/fragments/v1-auth-rules/ and
https://spec.matrix.org/v1.4/client-server-api/modules/account_data/.
2022-11-08 17:27:44 +00:00

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Markdown

---
---
{{% added-in this=true %}} The event ID is the [reference
hash](/server-server-api#calculating-the-reference-hash-for-an-event) of
the event encoded using a variation of [Unpadded
Base64](/appendices#unpadded-base64) which replaces the 62nd and
63rd characters with `-` and `_` instead of using `+` and `/`. This
matches [RFC4648's definition of URL-safe
base64](https://tools.ietf.org/html/rfc4648#section-5).
Event IDs are still prefixed with `$` and might result in looking like
`$Rqnc-F-dvnEYJTyHq_iKxU2bZ1CI92-kuZq3a5lr5Zg`.