Commenting before I've read this latest installment, I'm expecting nothing short of fun technical details and some interesting insights.
The first two parts were a really fun introduction into many aspects of how a text editor works, there's so much you don't even think about as a user of text editors, but Mihhail had to take care of.
I think my favourite takeaways were the bits of UI polish and thoughtfulness that are sprinkled through both pieces, and probably the third too.
Nice work Mihhail, you clearly care about not just making and selling a product, but making a wonderful experience out of something 'mundane' like a text editor. It takes a lot of care to go beyond just 'making it work' to 'making it work thoughtfully'!
Part 2 on HN → https://news.ycombinator.com/item?id=39603087