An omission of automatic completion in tab-complete.c

From 1146ea8fcdfdeccd27f1965f44dd2a220a068ccb Mon Sep 17 00:00:00 2001
From: wangw <wangw.fnst@fujitsu.com>
Date: Mon, 12 Apr 2021 08:59:12 +0800
Subject: [PATCH] An omission of automatic completion of CURRENT_ROLE in
 tab-complete.c

---
 src/bin/psql/tab-complete.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c
index 3a43c09bf6..ab8404fce3 100644
--- a/src/bin/psql/tab-complete.c
+++ b/src/bin/psql/tab-complete.c
@@ -744,6 +744,7 @@ static const SchemaQuery Query_for_list_of_statistics = {
 "   FROM pg_catalog.pg_roles "\
 "  WHERE substring(pg_catalog.quote_ident(rolname),1,%d)='%s'"\
 " UNION ALL SELECT 'PUBLIC'"\
+" UNION ALL SELECT 'CURRENT_ROLE'"\
 " UNION ALL SELECT 'CURRENT_USER'"\
 " UNION ALL SELECT 'SESSION_USER'"
 
@@ -3339,7 +3340,7 @@ psql_completion(const char *text, int start, int end)
 
 	/*
 	 * Complete "GRANT/REVOKE ... TO/FROM" with username, PUBLIC,
-	 * CURRENT_USER, or SESSION_USER.
+	 * CURRENT_ROLE, CURRENT_USER, or SESSION_USER.
 	 */
 	else if ((HeadMatches("GRANT") && TailMatches("TO")) ||
 			 (HeadMatches("REVOKE") && TailMatches("FROM")))
@@ -3758,6 +3759,7 @@ psql_completion(const char *text, int start, int end)
 		COMPLETE_WITH("FOR");
 	else if (Matches("CREATE", "USER", "MAPPING", "FOR"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles
+							" UNION SELECT 'CURRENT_ROLE'"
 							" UNION SELECT 'CURRENT_USER'"
 							" UNION SELECT 'PUBLIC'"
 							" UNION SELECT 'USER'");
-- 
2.23.0.windows.1