It would be really nice to have all text matching the current selected text highlighted in a specific color. That would make it very easy to see all matching text in an editor without having to resort to cycling through a search action.
If my request is unclear, I’m envisioning what happens in the Chrome browser when the “Find” feature is activated (where all matching text gets highlighted in yellow). However, it would be nice if the highlighting occurred when any text in the editor is selected rather than having to bring up a Find dialog.