Hi
>I searched the API and the topics in this group but found no references.
ace doesn't have option for that so far, but it shouldn't be very hard to add
one will need to change documentToScreenPosition and related functions
in editSession and find a way to notify layer/text.js about gaps (supporting
arbitrary gaps would be useful for displaying side by side diffs as well)
> Would it be a good and clean idea?
sublime text have similar option, so you can test with it