Julian Foad wrote on 2021-04-14: > If we are not looking at back-porting it to 1.14.x, then we could > [...] > - use the checks in libsvn_client; add a new 'notification' type for > the warnings
That way was easiest and didn't require much boiler-plate code at all. Done in http://svn.apache.org/r1889012 . As explained in the comment in https://subversion.apache.org/issue/4874 this changes the 1.14 behaviour to just add a warning in 1.15 and then become an error in 1.16. For 1.16 a small modification to the test expectations will need to be made, as I didn't find a simple way to make the expectation depend on the client version being tested. This will come up as a failure with an obvious fix, when we bump the trunk version to 1.16 after branching 1.15. If someone spots a way to automate this part too, do say. This appears to complete the issue. Do say if I have missed something. -- - Julian