Fish Shell today officially released its 4.0 version, with code ported from C++ to Rust, for easier development and better performance. We already wrote about it a couple of months ago, so we're reposting our article to coincide with the official release date.
https://alternativeto.net/news/2025/1/fish-shell-4-0-drops-c--for-rust-to-simplify-development-and-enhance-performance/