Add a \getenv command to psql.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 33d3eeadb21d2268104840cfef6bc2226ddfc680
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2021-12-20T18:17:58Z
Releases: 15.0
Add a \getenv command to psql.

\getenv fetches the value of an environment variable into a psql
variable.  This is the inverse of the \setenv command that was added
over ten years ago.  We'd not seen a compelling use-case for \getenv
at the time, but upcoming regression test refactoring provides a
sufficient reason to add it now.

Discussion: https://postgr.es/m/1655733.1639871614@sss.pgh.pa.us

Files

PathChange+/−
doc/src/sgml/ref/psql-ref.sgml modified +22 −0
src/bin/psql/command.c modified +41 −0
src/test/regress/expected/psql.out modified +12 −0
src/test/regress/sql/psql.sql modified +12 −0

Documentation touched

Discussion