Andrew Dunstan <andrew@dunslane.net> writes:
> I have changed it. The thing is, though, that this function not only
> performs the convert() function but acts as the engine for convert_to()
> and convert_from(). Those functions do some silent transformations, in
> one case passing a text Datum as the first argument and in the other
> case the returning the result as text. If there's a better way to do
> this I'll be happy to learn, but it seems to me it would involve some
> duplication - I tried to avoid that where possible.
Hmm. One suggestion would be to have an internal function declared
as taking and returning "struct varlena *", with a comment saying that
we depend on text and bytea both being compatible with this. All three
SQL-visible functions are then thin wrappers around that.
regards, tom lane
