From a415d62139562939b0c2bf291f120608fdea5e59 Mon Sep 17 00:00:00 2001
From: Mark Wong <markwkm@gmail.com>
Date: Tue, 9 Dec 2025 10:02:15 -0800
Subject: [PATCH v5 3/6] Handle pg_get_indexdef default args in
 system_functions.sql

Modernize pg_get_indexdef to use proargdefaults to handle the optional
column and pretty argument.
---
 src/backend/utils/adt/ruleutils.c | 20 --------------------
 src/include/catalog/pg_proc.dat   |  6 ++----
 2 files changed, 2 insertions(+), 24 deletions(-)

diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index 24c59510672..77a7b0ca769 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -1125,26 +1125,6 @@ pg_get_triggerdef_worker(Oid trigid, bool pretty)
  */
 Datum
 pg_get_indexdef(PG_FUNCTION_ARGS)
-{
-	Oid			indexrelid = PG_GETARG_OID(0);
-	int			prettyFlags;
-	char	   *res;
-
-	prettyFlags = PRETTYFLAG_INDENT;
-
-	res = pg_get_indexdef_worker(indexrelid, 0, NULL,
-								 false, false,
-								 false, false,
-								 prettyFlags, true);
-
-	if (res == NULL)
-		PG_RETURN_NULL();
-
-	PG_RETURN_TEXT_P(string_to_text(res));
-}
-
-Datum
-pg_get_indexdef_ext(PG_FUNCTION_ARGS)
 {
 	Oid			indexrelid = PG_GETARG_OID(0);
 	int32		colno = PG_GETARG_INT32(1);
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index c1b945cdae5..1dc0d01cc85 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -3978,9 +3978,6 @@
 { oid => '1642', descr => 'role name by OID (with fallback)',
   proname => 'pg_get_userbyid', provolatile => 's', prorettype => 'name',
   proargtypes => 'oid', prosrc => 'pg_get_userbyid' },
-{ oid => '1643', descr => 'index description',
-  proname => 'pg_get_indexdef', provolatile => 's', prorettype => 'text',
-  proargtypes => 'oid', prosrc => 'pg_get_indexdef' },
 { oid => '3415', descr => 'extended statistics object description',
   proname => 'pg_get_statisticsobjdef', provolatile => 's',
   prorettype => 'text', proargtypes => 'oid',
@@ -8592,7 +8589,8 @@
 { oid => '2507',
   descr => 'index description (full create statement or single expression) with pretty-print option',
   proname => 'pg_get_indexdef', provolatile => 's', prorettype => 'text',
-  proargtypes => 'oid int4 bool', prosrc => 'pg_get_indexdef_ext' },
+  proargtypes => 'oid int4 bool', proargnames => '{index,column,pretty}',
+  proargdefaults => '{0,false}', prosrc => 'pg_get_indexdef' },
 { oid => '2508', descr => 'constraint description with pretty-print option',
   proname => 'pg_get_constraintdef', provolatile => 's', prorettype => 'text',
   proargtypes => 'oid bool', prosrc => 'pg_get_constraintdef_ext' },
-- 
2.52.0