Martijn van Oosterhout <kleptog@svana.org> writes:
> You're not required to provide all the casts, but it's user friendly to
> do so. Requiring double casts to go between two essentially compatable
> types seems silly...
I believe what Greg had in mind included the idea that the parser would
automatically find two-step cast pathways if there wasn't a direct path.
This scares me though, as it seems like a recipe for surprising behavior.
regards, tom lane