Some of these are in fact possible, though with some restrictions. I wrote a blog post on how to support some negative lookbehinds: http://allanrbo.blogspot.com

Some of these are in fact possible, though with some restrictions. I wrote a blog post on how to support some negative lookbehinds: http://allanrbo.blogspot.com/2020/01/alternative-to-negative-lookbehinds-in.html http://allanrbo.blogspot.com/2020/01/alternative-to-negative...