Re: master d8a00879309: Cease preloading touch-screen.el outside X and Android

[Eli Zaretskii <eliz@gnu.org>]

> From: Arash Esbati <arash@gnu.org>
> Cc: Po Lu <luangruo@yahoo.com>
> Date: Wed, 06 Dec 2023 23:12:21 +0100
> 
> Po Lu via Mailing list for Emacs changes <emacs-diffs@gnu.org> writes:
> 
> > branch: master
> > commit d8a00879309a3bf62f6ffcae103aa3bdba776ee9
> > Author: Po Lu <luangruo@yahoo.com>
> > Commit: Po Lu <luangruo@yahoo.com>
> >
> >     Cease preloading touch-screen.el outside X and Android
> >     
> >     * lisp/calc/calc.el (touch-screen-display-keyboard):
> >     
> >     * lisp/minibuffer.el (clear-minibuffer-message):
> >     
> >     * lisp/term.el (touch-screen-display-keyboard): Declare
> >     touch-screen-display-keyboard before binding or setting it.
> >     
> >     * lisp/loadup.el: Don't autoload touch-screen.el outside X and
> >     Android.
> >     
> >     * lisp/touch-screen.el: Autoload functions called from commands
> >     responding to touch screen events.
> 
> I think this change produces these warnings:
> 
>   In end of data:
>   button.el:498:26: Warning: the function ‘touch-screen-track-tap’ is not
>   known to be defined.
> 
>   In clear-minibuffer-message:
>   minibuffer.el:979:23: Warning: reference to free variable
>   ‘touch-screen-current-tool’
> 
>   In tab-bar-touchscreen-begin:
>   tab-bar.el:440:55: Warning: reference to free variable
>   ‘touch-screen-delay’
> 
>   In end of data:
>   dired.el:5185:8: Warning: the function ‘touch-screen-hold’ is not known
>   to be defined.
> 
>   In tab-line-track-tap:
>   tab-line.el:978:50: Warning: reference to free variable
>   ‘touch-screen-delay’
> 
> This is with Emacs from master (d8a0087930) on macOS, built with:
> 
> git clean -fdx
> ./autogen
> ./configure ...
> make

The two functions are autoloaded, so I'm guessing that the warnings go
away once loaddefs.el is generated.

The variables indeed need a defvar, I think.