>If we tried to reimplement this stuff from scratch, we would likely start with a simple implementation, then tack on bits when we tried to handle issues like r

>If we tried to reimplement this stuff from scratch, we would likely start with a simple implementation, then tack on bits when we tried to handle issues like right-to-left layouts, Unicode, emoji, anti-aliasing, text overlapping and so on. This is why I always try to look back as far as I can in a source's history to see how it started. It at least gives me a sense of the amount of work it takes to get from simple to mature.