D23410: improve word completion to use highlighting to detect word boundaries

[Christoph Cullmann]

cullmann planned changes to this revision.

REPOSITORY
  R39 KTextEditor

REVISION DETAIL
  https://phabricator.kde.org/D23410

To: cullmann, dhaumann
Cc: kwrite-devel, kde-frameworks-devel, rrosch, LeGast00n, GB_2, domson, 
michaelh, ngraham, bruns, demsking, cullmann, sars, dhaumann