Apparently RESTBase has renamed the bodyOnly parameter to body_only. Everybody should probably update to match (VRS, Parsoid v3, VE, Flow, CX, etc.).
The services team should probably take more responsibility for updating clients when they change their API (or at least notifying all users).
Change 242556 had a related patch set uploaded (by Cscott):
api: bodyOnly -> body_only in query.
Change 242559 had a related patch set uploaded (by Cscott):
Rename RESTBase1/Parsoid3 bodyOnly parameter to body_only
Change 242563 had a related patch set uploaded (by Cscott):
Rename RESTBase1/Parsoid3 bodyOnly parameter to body_only
Change 242565 had a related patch set uploaded (by Cscott):
Rename RESTBase1/Parsoid3 bodyOnly parameter to body_only
Change 242565 merged by jenkins-bot:
Rename RESTBase1/Parsoid3 bodyOnly parameter to body_only
Change 242563 merged by jenkins-bot:
Rename RESTBase1/Parsoid3 bodyOnly parameter to body_only
Change 242559 merged by jenkins-bot:
Rename RESTBase1/Parsoid3 bodyOnly parameter to body_only
To clarify, we have recently decided to deprecate bodyOnly, but it is still working.
I also agree about the need to notify clients in time before we remove support for bodyOnly. We made this decision around September 9th, and deployed it mid-month, so this is relatively recent. Thank you, @cscott, for updating all clients so quickly. We will be able to shorten the time until we remove support for the bodyOnly version considerably thanks to this effort.
Announcement of removal of bodyOnly option by end of November: https://lists.wikimedia.org/pipermail/mediawiki-api/2015-October/003656.html
I'm not currently aware of any WMF projects still using bodyOnly, but I suspect there may still be outside users (kiwix, perhaps? others?).
@GWicke, perhaps you could add a bit of code in about a week (after the train deploy on Oct 8) to log the User-Agent header when the bodyOnly parameter is given, and we could mine the logs to see if there's anyone out there we need to yell at. We could do the same on the Parsoid side (although I'm pretty sure I haven't missed any users of the Parsoid v3 API, since it's pretty new).
@cscott, I'm 99% sure that none of the other major users (Kiwix, Google) use bodyOnly. Created a PR to log remaining uses / users at https://github.com/wikimedia/restbase/pull/362.