bug#66765: 30.0.50; Building emacs with xinput2 breaks receiving XSendEvent events

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: 66765@debbugs.gnu.org,  ami@fischman.org
> Date: Fri, 27 Oct 2023 18:34:56 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > I guess it would be a good idea to have this information in PROBLEMS,
> > then.
> 
> But that's tantamount to documenting the do's and don'ts of X
> development, since "xse" is nothing but a wrapper around an X request.
> It's a very slippery slope, though it's ultimately your call.

I'd rather we had this information in PROBLEMS, both for those who
consult that file and for us, when we need to help others to cope with
these issues.

In general, PROBLEMS should mention any problems with Emacs that
cannot be fixed in Emacs, preferably with workarounds, if we have
them.