On Sat, Sep 04, 2021 at 09:06:42AM +0200, Michael Albinus wrote:
> Mani Kancherla <kancherla.mani@gmail.com> writes:
>
> > I still see the problem with this. I open that specific problematic
> > file and split the window, it hangs.
>
> Just to be sure, I reran your test, again. No problem.
>
> You said that you're on macOS, while I'm using GNU/Linux. Perhaps this
> makes the difference, and we see an error of Emacs' thread
> implementation on macOS.

The state of threads on the NS port is... not good.

It may be worth Mani trying the master branch, though. Some crashes
and (possibly) infinite loops have been solved there.

--
Alan Third