ljb <lbayuk@mindspring.com> writes:
> I second this, as my Tcl driver also depends on the protocol. Can we also
> be reassured about compatibility (e.g. new backend will still talk to old
> clients)?
Yes.
The contents (layout and spelling) of error messages are likely to
change, which could break frontends that test for specific messages
--- but I'd opine any such frontends are already broken by message
internationalization. Otherwise, an old client should see no change.
regards, tom lane