rustfmt VS rust-bindgen

code must be formatted with rustfmt.

Yes, some cases are not yet supported (https://github.com/rust-lang/rustfmt/issues/4914).

Just FYI, the let-else suggestions will only work until rustfmt settles on a format for it. So you may be surprised when this happens and it suddenly changes.

rust-analyzer and Clippy aren't not really involved with formatting. rustmft does autoformat to 4 spaces.

rustfmt is the official formatter.

This week, I added a formatter and linter to rost_gen (a static site generator) to improve the readability of the code and fix common issues automatically. I chose to use rustfmt for the formatter and rust-clippy for the linter.

My example was "twice by one developer", not "twice across all indexed repos."

A spot check shows that quite a few in your link are used specifically to ensure correct handling of Rust multi-level breaks work syntax, like https://github.com/rust-lang/rust-analyzer/blob/master/crate... , https://github.com/rust-lang/rustfmt/blob/master/tests/sourc... , https://github.com/rust-lang/rust/blob/master/src/tools/rust... , https://github.com/rust-lang/rust/blob/master/src/tools/rust... and likely more.

Another is a translation of BASIC code to Rust, using break as a form of goto. https://github.com/coding-horror/basic-computer-games/blob/e...

The example at https://github.com/tokio-rs/mio/blob/master/tests/tcp.rs is a nice one

    // Wait for our TCP stream to connect

There is clippy for additional lints, rust-analyser has some lints (and refactoring tools) that are not in the compiler, there is rustfmt for formatting code or checking if code is formatted and so on

In addition, running rustfmt on existing files often moves comments around in a way that changes their meaming. So just doing this blindly on files that are not prepared for rustfmt is a bad idea. This is not a theoretical concern, I have run into this several times, and sometimes this has slipped through review.

There are no settings that would make rustfmt produce the formatting I think is best. In particular match is often formatted pretty badly, no matter which settings are used. Here are just some of the issues: - https://github.com/rust-lang/rustfmt/issues/3157 - https://github.com/rust-lang/rustfmt/issues/3995 - https://github.com/rust-lang/rustfmt/issues/4004 - https://github.com/rust-lang/rustfmt/issues/4005

But Rust has their "library" to create the wrapper bindings https://crates.io/crates/bindgen and it does a more than decent job, it will struggle with some C++ things but 99% of the time it can do it alone

What about these? I know they're a year old and I'm not sure how they actually work but they seem to use bindgen to automatically generate bindings. I haven't tried it.

Maybe bindgen is a possibility for you?