Re: User defined I/O conversion casts

Heikki Linnakangas <heikki.linnakangas@enterprisedb.com> writes:
> Patch attached. I'm using a magic OID "1" in pg_cast.castfunc field to 
> mark these extra I/O conversion casts.

Ugh.  That's really unacceptable (doesn't it make the oidjoins
regression test fail?),

I think that as things stand at the moment, you can get I/O conversion
casts to work for a user-defined type by making it be of string
category.  Maybe that would be an easier way to get the effect.
        regards, tom lane