From af65310ce77f680e6573c0379bdc63a2ff42b5a7 Mon Sep 17 00:00:00 2001
From: JianBo He <heeejianbo@gmail.com>
Date: Tue, 15 Mar 2022 10:40:37 +0800
Subject: [PATCH] chore(script): update_appup.escript support the update cmd

We often use the advanced directive `update` when hot upgrading
gen_server, gen_statem, and other such processes, and it will be
parsed as:
```
{suspend,[Mod]},
{load,{Mod,brutal_purge,brutal_purge}},
{code_change,up,[{Mod,[Extra]}]},
{resume,[Mod]},
```
So, we should treat the update instruction as having completed the
upgrade of this module.
---
 scripts/update_appup.escript | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/scripts/update_appup.escript b/scripts/update_appup.escript
index 9083b62f1..840f63509 100755
--- a/scripts/update_appup.escript
+++ b/scripts/update_appup.escript
@@ -324,6 +324,8 @@ process_old_action({add_module, Module}) ->
     [Module];
 process_old_action({delete_module, Module}) ->
     [Module];
+process_old_action({update, Module, _Change}) ->
+    [Module];
 process_old_action(LoadModule) when is_tuple(LoadModule) andalso
                                     element(1, LoadModule) =:= load_module ->
     element(2, LoadModule);