Waiting for PostgreSQL 19 – Add psql PROMPT variable for search_path.

On 28th of October 2025, Nathan Bossart committed patch:

Add psql PROMPT variable for search_path.
 
The new %S substitution shows the current value of search_path.
Note that this only works when connected to Postgres v18 or newer,
since search_path was first marked as GUC_REPORT in commit
28a1121fd9.  On older versions that don't report search_path, %S is
replaced with a question mark.
 
Suggested-by: Lauri Siltanen <[email protected]>
Author: Florents Tselai <[email protected]>
Reviewed-by: Jelte Fennema-Nio <[email protected]>
Reviewed-by: Jim Jones <[email protected]>
Reviewed-by: Chao Li <[email protected]>
Discussion: https://postgr.es/m/CANsM767JhTKCRagTaq5Lz52fVwLPVkhSpyD1C%2BOrridGv0SO0A%40mail.gmail.com

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