rustfmt vs Uncrustify
rustfmt
rust-lang.github.ioUncrustify
github.comSide by side
| Figure | rustfmt | Uncrustify |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 1 |
| Spec score · Code formatters | 7.9 (#4) | 7.6 (#11) |
| Spec score · Code Formatting Tools | 8.0 (#10) | 7.7 (#18) |
| Configuration | Configuration can be set in `rustfmt.toml` or `.rustfmt.toml`, and the default style conforms to the Rust style guide. | The project describes Uncrustify as highly configurable, with 901 options as of version 0.83.0. |
| Editor integrations | The README lists integrations or usage instructions for Vim, Emacs, Sublime Text 3, Atom, Visual Studio Code, and IntelliJ or CLion. | The README links usage guidance for Vim and an Uncrustify plugin for IntelliJ. |
| License | rustfmt is distributed under both the MIT License and Apache License 2.0. | The repository identifies its license as GPL-2.0. |
| Purpose | rustfmt formats Rust code according to style guidelines. | Uncrustify is a source code beautifier for C, C++, C#, Objective-C, D, Java, Pawn and Vala. |
| Support | The README points users to `rustfmt --help` and `cargo fmt --help` for command usage and arguments. | The project directs bug reports to its GitHub issue tracker and welcomes patches through pull requests. |
Plans
In their own words
rustfmt
rustfmt formats Rust code according to style guidelines. It can format files directly or read code from standard input and write formatted output to standard output. With Cargo, `cargo fmt` formats binary and library targets in a crate and works with workspaces. A `rustfmt.toml` or `.rustfmt.toml` file can hold configuration, including stable and nightly-only options. For automated checks, `--check` returns code 0 when no formatting changes are needed and code 1 when changes would be made; it can be used in CI to fail a build on formatting differences. The README lists editor use with Vim, Emacs, Sublime Text 3, Atom, Visual Studio Code, IntelliJ, and CLion. Rustfmt is available on Windows, macOS, and Linux, and is distributed under the MIT License and Apache License 2.0. It does not attempt to format comments, and listed limitations also involve macros, unparsable code, fragments, and non-ASCII Unicode. Unstable settings require opt-in on nightly, and the README says the latest version requires the nightly toolchain.