libpq and SPI

Hi,

I sent an email a few days ago and I haven't seen any response yet.
Basically, the problem is, if you do any "utility" queries inside of a SPI
function, libpq will lock up. You can see this by installing the execq()
example from the Programmer's Guide and doing the following from psql:

template1=> select execq('create user fred', 1);
Backend sent D message without prior T

And you will not get a prompt back. I was looking for thoughts on this.
Is it not reasonable to allow utility calls inside SPI? Should the backend
be sending data through libpq differently? Or should the client-side libpq
be handling this better? I patched the client-side libpq since I didn't
want to go messing with the backend.

Should this discussion be on a different mailing list?

Any ideas would be greatly appreciated.

Jerry