Reply to thread

There is now a special case that can cause a 404 error to be returned instead of a no permission error.

If you return an $errorPhraseKey that gets passed to getErrorOrNoPermissionResponseException and has the form requested_xxx_not_found, a 404 will be returned. This is in use for threads in 1.3.

Also, I should mention that responseMessage() calls now have a dedicated template.