I’m looking for a solution of the following problem. I want to have a “ghost text cursor” which follows the default cursor, but at another position. “Following” means that if the default cursor goes right, the ghost cursor goes right too, etc. But it should only be a decoration, which means if user enters a text, there should be no insertion at the ghost cursors position. So a second cursor is no option, as far as I can see.
Here you have a screenshot of what I mean – the solid line is the default text cursor and the dashed line is the “ghost cursor”.