[texworks] Disappearing lines problem

[Paul A Norman]

Hi,

I am about to download the newer TeXworks, but I can say I have not
encountered the problem for quite a while, even while in documents where it
has happened a number of times in the past.

I agree that the history of this thing suggests a downstream or
multi-cause/conflict situation as Stefan has outlined.

Previous reading around suggests it may also have to do with Qt's internal
messaging for UI widgets, and things queuing, demanding attention, which
puts something in the editor widget refresh out of sync, which is very
difficult for TeXworks project to adjust itself around.

It means that one (set of) cause(s) may be fixed, but other combinations
of editor usage may wait in ambush, or updates by Qt, can lead
us through the whole scenario again.

> and don't find the problem again over a period of - say
> - a couple of weeks, I guess we have reason to hope that the issue is
> indeed resolved :)

I would like to hope so! ...

Paul

On 1 March 2012 03:49, Stefan Löffler <st.loeffler at gmail.com> wrote:

> Hi,
>
> On 2012-02-29 15:39, Alain Delmotte wrote:
> > Could you provide a protocol for testing?
> > Which type of file, length,...
>
> If you mean an example .tex file: one is available (in a .zip) at
> http://code.google.com/p/texworks/issues/detail?id=505.
> Other than that, we haven't been able to determine what really triggers
> the issue, unfortunately (length of document, length of individual
> lines, complexity of document, ...). It seems somewhat like a race
> condition (two parts of the program accessing the same data at (roughly)
> the same time, thereby interfering with one another), so it could very
> well depend on the computer, the operating system, and/or the current
> work load on the processor.
>
> So unfortunately there is no definite recipe to reproduce that bug
> (which is why we need as many eyes as possible watching out for the
> issue). It will be difficult to prove it's gone for sure, of course, but
> if many people (especially those who have encountered the issue before,
> but everyone else is welcome to join the watching out, of course) keep
> their eyes open and don't find the problem again over a period of - say
> - a couple of weeks, I guess we have reason to hope that the issue is
> indeed resolved :).
>
> > For the moment I have limited access to internet (more or less once a
> > day), so I'll test and reply as soon as possible.
>
> Thanks for your efforts.
>
> Cheers,
> Stefan
>
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