D9750: ExpandingWidgetModel: find the right-most column based on location

[Kevin Funk]

kfunk added a comment.


  LGTM, but I'll let someone else approve.

REPOSITORY
  R39 KTextEditor

REVISION DETAIL
  https://phabricator.kde.org/D9750

To: mwolff, #kate
Cc: kfunk, #frameworks, michaelh, kevinapavew, ngraham, demsking, cullmann, 
sars, dhaumann