On Fri, Nov 8, 2019 at 12:44 PM Thomas Munro <thomas(dot)munro(at)gmail(dot)com> wrote:
> The reason for returning an empty string for "C" and "POSIX" is the
> following comment for get_collation_actual_version():
>
> * A particular provider must always either return a non-NULL string or return
> * NULL (if it doesn't support versions). It must not return NULL for some
> * collcollate and not NULL for others.
>
> I'm not sure why, or if that really makes sense.
Peter E, do you have any thoughts on this question?