Re: org-drill problem: questions are blank

[Marco Wahl <marcowahlsoft@gmail.com>]

Peter Westlake <peter.westlake@pobox.com> writes:

> On Thu, 26 Mar 2015, at 17:26, J. David Boyd wrote:
>> Peter Westlake <peter.westlake@pobox.com> writes:
>> 
>> > From time to time Org-drill shows me a blank window instead of a
>> > question. The frame, mode line and prompt to answer are visible, but
>> > there's nothing in the window at all. As a workaround I can type "t" to
>> > edit the tags, and the question will appear.
>> >
>> > A sample file is enclosed. It's a new file without any of the org-drill
>> > property drawers just to keep the example short and to avoid having to
>> > wait for the question to be scheduled to be shown again, but the problem
>> > *does* still happen when the drawers are present.
>> >
>> > To reproduce the bug, run org-drill in drillbug.org; the question "MC"
>> > gives a blank screen.
>> >
>> > I'm using org-drill with the latest version of Org-mode, git commit
>> > 2f58e3c011ec84f621905332d8df68b83da580d9, on Emacs 24.3.1, 2014-09-30.
>> >
>> > Peter.
>> 
>> There's no attached file...
>
> Ugh! There is now, sorry.

Thanks!  I can reproduce your issue with a relatively fresh emacs 25 and
org from git.

AFAICS the window gets blanked sometimes in function
org-toggle-latex-fragment of org.el in line

--8<---------------cut here---------------start------------->8---
;; Work around a bug that doesn't restore window's start
;; when widening back the buffer.
(set-window-start nil window-start)
--8<---------------cut here---------------end--------------->8---

A workaround would be to comment out just this line.

I don't know if this is a reliable fix though.


HTH
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