We need a method to effectively update existing highlights in the editor. To do that, we should save pre- and post- conditions of the highlighter for each line.
Created attachment 82438 [details] Patch
Comment on attachment 82438 [details] Patch Please test this thoroughly for the cases with nested highlighters. Also, as we agreed offline, you should add tests for highlighter as your next change.
Comment on attachment 82438 [details] Patch Clearing flags on attachment: 82438 Committed r78815: <http://trac.webkit.org/changeset/78815>
All reviewed patches have been landed. Closing bug.