Michael Strawbridge [off-list ref] writes:

From 67223238d9b1977d20b1286055d7f197e4d746e9 Mon Sep 17 00:00:00 2001
From: Michael Strawbridge <redacted>
Date: Wed, 11 Oct 2023 16:13:13 -0400
Subject: [PATCH v2] send-email: move validation code below
 process_address_list

Why do these in-body headers to lie about the author date?

By the way, the in-body header does seem to support the header line
folding (see the "subject" one here).