I recently had to look at the implementation of the Sparkline [1] widget in Ratatui which uses a similar Unicode technique but scales nicely for sparklines with

I recently had to look at the implementation of the Sparkline [1] widget in Ratatui which uses a similar Unicode technique but scales nicely for sparklines with larger vertical size. [1] https://github.com/ratatui/ratatui/blob/20c88aaa5b9eb011a52240eab5edc1a8db23157a/src/widgets/sparkline.rs#L157 https://github.com/ratatui/ratatui/blob/20c88aaa5b9eb011a522...