bug#50043: 28.0.50; USABLE_SIGOI undef code paths do not work correctly

[Eli Zaretskii]

> Date: Tue, 16 Nov 2021 18:06:51 -0500
> Cc: larsi@gnus.org, 50043@debbugs.gnu.org
> From: Ken Brown <kbrown@cornell.edu>
> 
> Are you talking about having x_get_foreign_selection call 
> wait_reading_process_output in a loop?

Yes.

> That would fix this particular bug, but I was thinking of trying to
> solve a more general problem.

What is that more general problem, and when does it rear its ugly
head?