Magic Completions in rust-analyzer (a Language Server Protocol implementation for Rust), https://rust-analyzer.github.io/book/features.html#magic-completions.

- expr.if expands to if expr { } or if let … { } for Option or Result
- expr.dbg expands to dbg!(expr)
- expr.match expands to match expr { … }
- tmod expands to #[cfg(test)] mod tests { use super::*; #[test] fn test_name() { } }

#RustLang#LSP #completions