D17677: Add workaround for gtk file chooser filter patterns

[David Edmundson]

davidedmundson added inline comments.

INLINE COMMENTS

> jgrulich wrote in filechooser.cpp:287
> This can be done of course, but it will not fix this problem. It's reasonable to use it directly and maybe add support for regular expressions in filters to KIO, but this is something what will need more work and require changes on two places. I would like to have now a workaround that can be pushed to stable Plasma release now.

KFileWidget::setFilter exists and takes regular expressions already.

REPOSITORY
  R838 Flatpak Support: KDE Portal for XDG Desktop

REVISION DETAIL
  https://phabricator.kde.org/D17677

To: jgrulich, broulik
Cc: ngraham, davidedmundson, plasma-devel, GB_2, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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