Po Lu <luangruo@yahoo.com> writes:

> Pip Cet <pipcet@protonmail.com> writes:
>
>> What were you doing that launched multiple threads?

Nothing particular comes to mind. I think I marked a region to do some
editing. I definitely didn't start a thread on purpose.

>
> Either diff-hl or debbugs.el.  It was the latter which caught me
> unawares one morning having just updated it from ELPA and prompted me to
> implement threads properly on Android.