[LyX/master] Fix crash after 24926b2e239.

[Scott Kostyshak]

On Sat, Mar 28, 2020 at 11:06:36PM -0400, Richard Kimberly Heck wrote:
> On 3/28/20 7:03 PM, Scott Kostyshak wrote:
> > On Sat, Mar 28, 2020 at 08:05:04PM +0100, Richard Kimberly Heck wrote:
> >> commit 104fdcc9be40df19d50cddad7f8ae9ab63bbf5f7
> >> Author: Richard Kimberly Heck <rikiheck at lyx.org>
> >> Date:   Sat Mar 28 15:23:13 2020 -0400
> >>
> >>     Fix crash after 24926b2e239.
> >>     
> >>     The matched element may not have a parent. I guess the old version of
> >>     setExpanded too care of that. Now we have to do so.
> >> ---
> > Thanks for fixing that, Riki. Did you by chance audit the others of
> > 24926b2e239? If not, I will take a look. Note to self: there is also
> > a similar change at 273af880.
> 
> No, I just ran into that one accidentally. In this case, it's because
> the search key can actually match the category headers, like "Document
> and Window". I'm not sure that's fully intended, but it is what causes
> the crash.

OK I'll take a look at the others.

Thanks,

Scott
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