On 2022-09-22 12:48:47 -0400, Tom Lane wrote:
> I wrote:
> > I think this is the issue Peter mentioned about needing to distinguish
> > between empty strings and NULL strings. We're going to need to rethink
> > the behavior of pg_strtok() a bit to fix that.
>
> After staring at the code a bit, I think we don't need to touch
> pg_strtok() per se. I propose that this can be resolved with changes
> at the next higher level. Let's make outToken print NULL as <> as
> it always has, but print an empty string as "" (two double quotes).
> If the raw input string is two double quotes, print it as \"" to
> disambiguate. This'd require a catversion bump when committed,
> but I don't think there are any showstopper problems otherwise.
Makes sense to me.
