-# rustfmt [![Build Status](https://travis-ci.org/rust-lang/rustfmt.svg)](https://travis-ci.org/rust-lang/rustfmt) [![Build Status](https://ci.appveyor.com/api/projects/status/github/rust-lang/rustfmt?svg=true)](https://ci.appveyor.com/project/nrc/rustfmt) [![crates.io](https://img.shields.io/crates/v/rustfmt-nightly.svg)](https://crates.io/crates/rustfmt-nightly) [![Travis Configuration Status](https://img.shields.io/travis/davidalber/rustfmt-travis.svg?label=travis%20example)](https://travis-ci.org/davidalber/rustfmt-travis)
+# rustfmt [![Build Status](https://travis-ci.com/rust-lang/rustfmt.svg?branch=master)](https://travis-ci.com/rust-lang/rustfmt) [![Build Status](https://ci.appveyor.com/api/projects/status/github/rust-lang/rustfmt?svg=true)](https://ci.appveyor.com/project/rust-lang-libs/rustfmt) [![crates.io](https://img.shields.io/crates/v/rustfmt-nightly.svg)](https://crates.io/crates/rustfmt-nightly) [![Travis Configuration Status](https://img.shields.io/travis/davidalber/rustfmt-travis.svg?label=travis%20example)](https://travis-ci.org/davidalber/rustfmt-travis)
A tool for formatting Rust code according to style guidelines.
You can run `rustfmt` with Rust 1.24 and above.
+### On the Stable toolchain
+
To install:
-```
-rustup component add rustfmt-preview
+```sh
+rustup component add rustfmt
```
-to run on a cargo project in the current working directory:
+To run on a cargo project in the current working directory:
-```
+```sh
cargo fmt
```
-For the latest and greatest `rustfmt` (nightly required):
-```
-rustup component add rustfmt-preview --toolchain nightly
-```
-To run:
+### On the Nightly toolchain
+
+For the latest and greatest `rustfmt`, nightly is required.
+
+To install:
+
+```sh
+rustup component add rustfmt --toolchain nightly
```
+
+To run on a cargo project in the current working directory:
+
+```sh
cargo +nightly fmt
```
## Installation
-```
-rustup component add rustfmt-preview
+```sh
+rustup component add rustfmt
```
## Installing from source
To install from source (nightly required), first checkout to the tag or branch you want to install, then issue
-```
+```sh
cargo install --path .
```
read data from stdin. Alternatively, you can use `cargo fmt` to format all
binary and library targets of your crate.
-You can run `rustfmt --help` for information about argument.
+You can run `rustfmt --help` for information about available arguments.
When running with `--check`, Rustfmt will exit with `0` if Rustfmt would not
make any formatting changes to the input, and `1` if Rustfmt would make changes.
```yaml
language: rust
before_script:
-- rustup component add rustfmt-preview
+- rustup component add rustfmt
script:
- cargo fmt --all -- --check
- cargo build
`rustfmt.toml` or `.rustfmt.toml`, place it in the project or any other parent
directory and it will apply the options in that file. See `rustfmt
--help=config` for the options which are available, or if you prefer to see
-visual style previews, [Configurations.md](Configurations.md).
+visual style previews, [GitHub page](https://rust-lang.github.io/rustfmt/).
By default, Rustfmt uses a style which conforms to the [Rust style guide][style
guide] that has been formalized through the [style RFC
Configuration options are either stable or unstable. Stable options can always
be used, while unstable ones are only available on a nightly toolchain, and opt-in.
-See [Configurations.md](Configurations.md) for details.
+See [GitHub page](https://rust-lang.github.io/rustfmt/) for details.
+
+### Rust's Editions
+Rustfmt is able to pick up the edition used by reading the `Cargo.toml` file if
+executed through the Cargo's formatting tool `cargo fmt`. Otherwise, the edition
+needs to be specified in `rustfmt.toml`, e.g., with `edition = "2018"`.
## Tips
* For things you do not want rustfmt to mangle, use `#[rustfmt::skip]`
+* To prevent rustfmt from formatting a macro,
+ use `#[rustfmt::skip::macros(target_macro_name)]`
+
+ Example:
+
+ ```rust
+ #[rustfmt::skip::macros(html)]
+ fn main() {
+ let macro_result1 = html! { <div>
+ Hello</div>
+ }.to_string();
+ ```
* When you run rustfmt, place a file named `rustfmt.toml` or `.rustfmt.toml` in
target file directory or its parents to override the default settings of
rustfmt. You can generate a file containing the default configuration with
Example:
- ```
+ ```sh
cargo fmt -- --emit files
```