[PATCH v1 1/6] Handle pg_get_ruledef default args in system_functions.sql

Modernize pg_get_ruledef to use CREATE OR REPLACE FUNCTION to handle the
optional pretty argument.
---
 src/backend/catalog/system_functions.sql |  7 +++++++
 src/backend/utils/adt/ruleutils.c        | 18 ------------------
 src/include/catalog/pg_proc.dat          |  5 +----
 3 files changed, 8 insertions(+), 22 deletions(-)

diff --git a/src/backend/catalog/system_functions.sql b/src/backend/catalog/system_functions.sql
index 2d946d6d9e9..febed53c9fa 100644
--- a/src/backend/catalog/system_functions.sql
+++ b/src/backend/catalog/system_functions.sql
@@ -657,6 +657,13 @@ LANGUAGE INTERNAL
 STRICT VOLATILE PARALLEL UNSAFE
 AS 'pg_replication_origin_session_setup';
 
+CREATE OR REPLACE FUNCTION
+  pg_get_ruledef(rule oid, pretty bool DEFAULT false)
+RETURNS TEXT
+LANGUAGE INTERNAL
+PARALLEL SAFE
+AS 'pg_get_ruledef';
+
 --
 -- The default permissions for functions mean that anyone can execute them.
 -- A number of functions shouldn't be executable by just anyone, but rather
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index 556ab057e5a..de063d63b4f 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -558,24 +558,6 @@ static void get_json_table_nested_columns(TableFunc *tf, JsonTablePlan *plan,
  */
 Datum
 pg_get_ruledef(PG_FUNCTION_ARGS)
-{
-	Oid			ruleoid = PG_GETARG_OID(0);
-	int			prettyFlags;
-	char	   *res;
-
-	prettyFlags = PRETTYFLAG_INDENT;
-
-	res = pg_get_ruledef_worker(ruleoid, prettyFlags);
-
-	if (res == NULL)
-		PG_RETURN_NULL();
-
-	PG_RETURN_TEXT_P(string_to_text(res));
-}
-
-
-Datum
-pg_get_ruledef_ext(PG_FUNCTION_ARGS)
 {
 	Oid			ruleoid = PG_GETARG_OID(0);
 	bool		pretty = PG_GETARG_BOOL(1);
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 5cf9e12fcb9..c215d47f2d8 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -3952,9 +3952,6 @@
   proargtypes => 'oid oid', prosrc => 'oidge' },
 
 # System-view support functions
-{ oid => '1573', descr => 'source text of a rule',
-  proname => 'pg_get_ruledef', provolatile => 's', prorettype => 'text',
-  proargtypes => 'oid', prosrc => 'pg_get_ruledef' },
 { oid => '1640', descr => 'select statement of a view',
   proname => 'pg_get_viewdef', provolatile => 's', proparallel => 'r',
   prorettype => 'text', proargtypes => 'text',
@@ -8492,7 +8489,7 @@
 # System-view support functions with pretty-print option
 { oid => '2504', descr => 'source text of a rule with pretty-print option',
   proname => 'pg_get_ruledef', provolatile => 's', prorettype => 'text',
-  proargtypes => 'oid bool', prosrc => 'pg_get_ruledef_ext' },
+  proargtypes => 'oid bool', prosrc => 'pg_get_ruledef' },
 { oid => '2505',
   descr => 'select statement of a view with pretty-print option',
   proname => 'pg_get_viewdef', provolatile => 's', proparallel => 'r',
-- 
2.51.2


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