On Wed, Nov 2, 2022 at 3:44 AM Jeff King [off-list ref] wrote:

After sleeping on it, I think I fully understand what's going on. There
are actually _two_ bugs, but they are closely related. ;)

Here are patches which fix them both. I may be setting a new record for
the ratio of commit message lines to changed code. But it took me a
while to figure out what was going on, so I wanted to explain it fully.

Well explained. For someone who has (probably) never looked at that
code (me), the explanations made perfect sense.

(Oh, and I didn't even have to report any s///.)