In the current 11th-based site, code marked with diff:<lang> have both language highlighting and line-by-line diff highlighting. You can also switch between two tabs; one of which shows the diff and the other of which shows the final code with the diff applied (and the copy button only appears on the latter).
This will require an extension to be written, but I already vibe-wrote it as part of #574 (hasn't been tested though).
In the current 11th-based site, code marked with
diff:<lang>have both language highlighting and line-by-line diff highlighting. You can also switch between two tabs; one of which shows the diff and the other of which shows the final code with the diff applied (and the copy button only appears on the latter).This will require an extension to be written, but I already vibe-wrote it as part of #574 (hasn't been tested though).