Subject: bug#57200: 29.0.50; Symbol's function definition is void: update-directory-autoloads

From: Eli Zaretskii <[email-masked]>
Date: Sun, 14 Aug 2022 19:52:04 +0300

> Date: Mon, 15 Aug 2022 01:38:36 +0900 (JST)
> Cc: [email-masked], [email-masked]
> From: Yasuhiro Kimura <[email-masked]>
> 
> When some .el file is moved to lisp/obsolete, is function defined
> in it unavaiable any more?

It is available, but will not be loaded automatically.  You need to
load it "by hand", if you want to use it.