This proposal looks like it's from 2017 (there are more recent commits, but they are just typo fixes). It was briefly discussed here at the time: <a href="https://news.ycombinator.com/item?id=13669001" rel="nofollow">https://news.ycombinator.com/item?id=13669001</a><p>Anybody familiar with Swift development have updates on whether it went anywhere and what the current state is? As someone not in this particular loop, not immediately clear to me why a 6-year-old proposal was linked here.