"David G. Johnston" <david.g.johns...@gmail.com> writes: > The risk here is significantly reduced since the existing user-visible > behavior is an error which presumably no one is relying upon. Between that > and being able to conform to the standard syntax for a long-standing > feature I would say the benefit outweighs the cost and risk.
The risk you're ignoring is that this patch will break something that *did* work before. Given that the first version did exactly that, I do not think that risk should be considered negligible. I'm going to change my vote for back-patching from -0.5 to -1. regards, tom lane