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Bug
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    Resolution: Done
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P4: Low
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    5.5.0 RC, 5.6, 5.8, 5.9
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    None
 
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        346c15102b14c58b8aaeed2c1586cd3100200e28
 
QRegularExpression must be an replacement of a QRegExp.
But QSortFilterProxyModel still has no suport for filtering with QRegularExpression.
Only setFilterRegExp is available.