From 179ac55e6ad7bdbfff3dda4c26c9a81933b98adf Mon Sep 17 00:00:00 2001
From: "David G. Johnston" <david.g.johnston@gmail.com>
Date: Thu, 9 Jun 2022 15:28:53 +0000
Subject: [PATCH] doc: Clarify the behavior of routines and explict extension
 membership

---
 doc/src/sgml/ref/alter_function.sgml  |  7 +++++--
 doc/src/sgml/ref/alter_procedure.sgml |  7 ++++++-
 doc/src/sgml/ref/drop_extension.sgml  | 11 +++++++----
 3 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/doc/src/sgml/ref/alter_function.sgml b/doc/src/sgml/ref/alter_function.sgml
index 0ee756a94d..08008f0391 100644
--- a/doc/src/sgml/ref/alter_function.sgml
+++ b/doc/src/sgml/ref/alter_function.sgml
@@ -160,8 +160,11 @@ ALTER FUNCTION <replaceable>name</replaceable> [ ( [ [ <replaceable class="param
      <para>
       This form marks the function as dependent on the extension, or no longer
       dependent on that extension if <literal>NO</literal> is specified.
-      A function that's marked as dependent on an extension is automatically
-      dropped when the extension is dropped.
+      A function that's marked as dependent on an extension is dropped when the
+      extension is dropped, even if cascade is not specified.
+      dependency checking in restrict mode <xref linkend="sql-dropextension"/>.
+      A function can depend upon multiple extensions, and will be dropped when
+      any one of those extensions is dropped.
      </para>
     </listitem>
    </varlistentry>
diff --git a/doc/src/sgml/ref/alter_procedure.sgml b/doc/src/sgml/ref/alter_procedure.sgml
index 033fda92ee..bab7ac2743 100644
--- a/doc/src/sgml/ref/alter_procedure.sgml
+++ b/doc/src/sgml/ref/alter_procedure.sgml
@@ -147,7 +147,12 @@ ALTER PROCEDURE <replaceable>name</replaceable> [ ( [ [ <replaceable class="para
     <term><replaceable class="parameter">extension_name</replaceable></term>
     <listitem>
      <para>
-      The name of the extension that the procedure is to depend on.
+      This form marks the procedure as dependent on the extension, or no longer
+      dependent on that extension if <literal>NO</literal> is specified.
+      A procedure that's marked as dependent on an extension is dropped when the
+      extension is dropped, even if cascade is not specified.
+      A procedure can depend upon multiple extensions, and will be dropped when
+      any one of those extensions is dropped.
      </para>
     </listitem>
    </varlistentry>
diff --git a/doc/src/sgml/ref/drop_extension.sgml b/doc/src/sgml/ref/drop_extension.sgml
index 5e507dec92..f2ca6aa5b7 100644
--- a/doc/src/sgml/ref/drop_extension.sgml
+++ b/doc/src/sgml/ref/drop_extension.sgml
@@ -30,7 +30,9 @@ DROP EXTENSION [ IF EXISTS ] <replaceable class="parameter">name</replaceable> [
 
   <para>
    <command>DROP EXTENSION</command> removes extensions from the database.
-   Dropping an extension causes its component objects to be dropped as well.
+   Dropping an extension causes its component objects, and other explicitly
+   dependent routines (see <xref linkend="sql-alterroutine"/>,
+   the depends on extension action), to be dropped as well.
   </para>
 
   <para>
@@ -77,9 +79,10 @@ DROP EXTENSION [ IF EXISTS ] <replaceable class="parameter">name</replaceable> [
     <term><literal>RESTRICT</literal></term>
     <listitem>
      <para>
-      Refuse to drop the extension if any objects depend on it (other than
-      its own member objects and other extensions listed in the same
-      <command>DROP</command> command).  This is the default.
+      For each extension, refuse to drop anything if any objects (other than the
+      extensions listed) depend on it.  However, its own member objects, and routines
+      that are explicitly dependent on this extension, are skipped.
+      This is the default.
      </para>
     </listitem>
    </varlistentry>
-- 
2.25.1