bug#47162: Mouse Wheel Won't Work When Emacs Built without Any Window System

[Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Lars Ingebrigtsen [2021-07-31 20:09:43] wrote:
> Lars Ingebrigtsen <larsi@gnus.org> writes:
>> Stefan Monnier <monnier@iro.umontreal.ca> writes:
>>> +       ;; Put the defcustom *after* the function, so its
>>> +       ;; initializer/setter can call the function.
>>
>> I like it.
>
> Spoke some seconds too soon.  The leads to the following when doing a
> "make bootstrap":
>
> Loading faces...
> Loading loaddefs.el (source)...
> Attempt to autoload mouse-wheel-mode while preparing to dump
> make[1]: *** [Makefile:569: emacs.pdmp] Error 255

This brought to a light a more direct bug that could be reproduced in
the non-GUI build (by setting mouse-wheel-mode before loading mwheel.el)
and the fix to that bug fixes the use of `custom-initialize-delay` as
well so I pushed it to `master`.

[ It's hard to test those things in all the various ways they can be
  loaded, so I'm keeping my fingers crossed that it won't introduce
  another bootstrap problem elsewhere, but since it's now "more
  normal", I'm hopeful.  ]


        Stefan