Add a "SQLSTATE-only" error verbosity option to libpq and psql.

This is intended for use mostly in test scripts for external tools,
which could do without cross-PG-version variations in error message
wording.  Of course, the SQLSTATE isn't guaranteed stable either, but
it should be more so than the error message text.

Note: there's a bit of an ABI change for libpq here, but it seems
OK because if somebody compiles against a newer version of libpq-fe.h,
and then tries to pass PQERRORS_SQLSTATE to PQsetErrorVerbosity()
of an older libpq library, it will be accepted and then act like
PQERRORS_DEFAULT, thanks to the way the tests in pqBuildErrorMessage3
have historically been phrased.  That seems acceptable.

Didier Gautheron, reviewed by Dagfinn Ilmari Mannsåker

Discussion: https://postgr.es/m/CAJRYxuKyj4zA+JGVrtx8OWAuBfE-_wN4sUMK4H49EuPed=mOBw@mail.gmail.com

1 files changed, 1 insertions, 1 deletions

diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c
index 22576adc51e..7c4e5fbacbe 100644
--- a/src/bin/psql/tab-complete.c
+++ b/src/bin/psql/tab-complete.c
@@ -3652,7 +3652,7 @@ psql_completion(const char *text, int start, int end)
 		else if (TailMatchesCS("SHOW_CONTEXT"))
 			COMPLETE_WITH_CS("never", "errors", "always");
 		else if (TailMatchesCS("VERBOSITY"))
-			COMPLETE_WITH_CS("default", "verbose", "terse");
+			COMPLETE_WITH_CS("default", "verbose", "terse", "sqlstate");
 	}
 	else if (TailMatchesCS("\\sf*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_routines, NULL);