String grapheme splitting support #5
Description
We are missing a string grapheme splitting algorithm, causing string functions such as length (which originally counts graphemes), split (which splits into graphemes when the separator is empty), as well as pop_grapheme and to_graphemes, to be inconsistent with other targets.
We'd have to investigate the best way forward here. It's likely we'd have to make a small Rust or Python (or Gleam!) program to process Unicode data and generate relevant tables.