On Wed, Nov 23, 2016 at 8:06 AM, Stefan Monnier wrote: > > I think the reference wasn't to the exposed API but to the underlying > implementation technique, but XEmacs uses doubly-linked lists to store > their extents, so it's no better than what we have. > Yes. I was wondering if they were using a clever data structure and/or search technique, but it sounds like that isn't the case. I apologize for the noise. -- Best, Zhenya