I think the issue here is that the original case for this is a user accidentally getting into an \if and then having no clue what's going on. That's similar to what happens when you miss a quote or a semicolon. We handle those cases with %R, and I think %R needs to support if as well.
Perhaps there's value to providing more info (active branch, etc), but ISTM trying to do that will just confuse the original (%R) case.
Jim,
After spending a few minutes to familiarize myself with %R, I'm in agreement with your second statement (adding if-else to %R will just confuse %R). However, your first statement seems to indicate the opposite. Can you elaborate?
All, As it is, I've added interactive mode psql_error notifications about the resulting branching state of any branching commands, and any attempt to send non-branching commands or queries while in an inactive branch will generate a psql_error saying that the command was ignored. Waiting til I get what should or shouldn't be done about prompts before issuing the next patch revision.
