#1 Highlight group definition when clicking result group

[M. Comtois]

When a regex matches and multiple groups appear in the Search Results pane, when you click on one of these groups, the text corresponding to the group is highlighted in the Text Sample pane. It would be nice to also highlight the group definition in the Regex Pattern that caused this group to be created in the Search Results pane. For that, the right set of (...) must be found.