Re: Feature: psql - display current search_path in prompt

On Thu, Jun 12, 2025 at 06:57:37PM +0300, Florents Tselai wrote:
> Absent any other feedback I'm marking this as Ready for Committer;
> Said committer can push back on my arbitrary %S selection
> https://commitfest.postgresql.org/patch/5808/

PQparameterStatus() will return NULL if the parameter is not known.  So,
with this patch, using %S in a prompt when connected to a <v18 version of
PostgreSQL will produce an empty string.  Given an empty string is a valid
value for search_path, I think we probably want to use a special value in
this case.  Perhaps we could use "?", which is much less likely to be a
value for search_path.