bug#12906: 24.2.50; Parts of the screen are completely white

["Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>]

Eli,

Eli Zaretskii wrote:
>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>>
>> Because of heavy workload (with the end of year holidays and so on), I cannot
>> commit on being able to free up the time needed to do so, if this is
>> configuration related.
>
> Not really configuration related.  Rather, something in your
> configuration triggers the bug.  And it's undoubtedly a bug, since
> redraw-display fixes the display: some redisplay optimization
> somewhere decides it's okay to take a shortcut, which it shouldn't.
>
>> However, the first settings I'd suspect would be in the "Controlling the
>> display" block. I'm copying it in case it'd trigger some alarm for someone:
>
> Thanks, I will try with some of these settings.

Another thought: I've observed that in Org buffers -- but I almost exclusively
work in such buffers, nowadays -- with "literate programming" aspects (I mean:
with code blocks inserted in the flow of the text).

And, something that's not on by default about those blocks is:

--8<---------------cut here---------------start------------->8---
  ;; fontify code in code blocks
  (setq org-src-fontify-natively t)
--8<---------------cut here---------------end--------------->8---

Please add that as well in your test config, it could count!

Thinking more about it, I'm not sure (anymore) I've ever seen the display
problem in pure Emacs Lisp buffers, for example -- though, this may prove
wrong (assumption to be taken with lots of caution).

>> I *will* work with all these settings commented for the following hours and
>> days, just to see whether the problem appears or not
>
> Thanks, that will help.

I hope we'll catch it!

Best regards,
Fabrice