Subject: 30.0.50; ido-completion-buffer type doesn't allow nil as value
From: Mauro Aranda <[email-masked]>
To: [email-masked]
Date: Tue, 5 Sep 2023 08:17:51 -0300
List-Id: <debbugs-submit.debbugs.gnu.org>

The docstring of ido-completion-buffer says:
"Set to nil to disable completion buffers popping up."

But the :type doesn't allow nil as value.