Am Fri, 23 Aug 2013 17:29:37 +0300
schrieb Eli Zaretskii <eliz@gnu.org>:

> > That patch seems to work, thank you.
> 
> Thanks, committed as trunk revision 113979.

Cool!

> I think your analysis is correct.  Perhaps invoking font-lock to
> fontify the appropriate portion of the text, before taking the prefix
> string, will solve that?
> 
> > Perhaps this is a more an issue of adaptive-wrap-mode, I
> > don't know.
> 
> I think it is indeed an issue with adaptive-wrap-mode.

Yes, it seems to work. I used the attached patch for adaptive-wrap.el
(although I do not know if this is the correct way to do because
I'm not really familiar with font-lock), it just works for me.

Thanks again
Frank