Re: Why is touch-screen.el preloaded?

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: emacs-devel@gnu.org
> Date: Wed, 29 Nov 2023 08:02:22 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > I don't think I understand the problem with using defvar.  AFAIU, this
> > is our usual technique in these cases.
> 
> Setting these variables is an operation that will be executed
> frequently, so it'll cause plenty of confusion to force every such
> setter to declare them.  Some will never noticed it is not preloaded on
> a few systems, and the code they produce will not compile correctly on
> those systems.

I don't think I understand what you are saying.  Can you perhaps show
an example and explain this using that example?