Re: [O] [PATCH] org-agenda: Add 'none setting for org-agenda-overriding-header

[Adam Porter]

By the way, one of its features is that, when a test doesn't pass, it
shows a line-by-line diff of the agenda buffer compared with the saved
result.  It's saved me a lot of time when debugging test failures, as
otherwise I'd have to visually compare a large agenda buffer.  :)