On 17th of February, Joe Conway committed patch:
Add new system view, pg_config Move and refactor the underlying code for the pg_config client application to src/common in support of sharing it with a new system information SRF called pg_config() which makes the same information available via SQL. Additionally wrap the SRF with a new system view, as called pg_config. Patch by me with extensive input and review by Michael Paquier and additional review by Alvaro Herrera.
Continue reading Waiting for 9.6 – Add new system view, pg_config