[09:41:32] <Reedy>	 What does rev_content_model = null mean?
[09:41:36] <Reedy>	 Autodetect?
[14:01:42] <anomie>	 Reedy: rev_content_model = null means "the default model for the title", which breaks things if the default ever changes (see also T104033, T105652). MCR is getting rid of rev_content_model entirely in favor of content.content_model, which can't be null.
[14:01:42] <stashbot>	 T105652: RfC: Content model storage - https://phabricator.wikimedia.org/T105652
[14:01:42] <stashbot>	 T104033: Populate rev_content_model and rev_content_format when saving - https://phabricator.wikimedia.org/T104033