rust fmt

Simple VS Code extension for formatting Rust code using rustfmt.

Requirements

You need rustfmt installed. Install it via:

rustup component add rustfmt

Verify installation:

rustfmt --version
rustc --version
rustup --version

Works on Linux, Windows, and macOS.

VS Code Settings

Add to your settings.json for automatic formatting:

"editor.formatOnSave": true,
"[rust]": {
    "editor.defaultFormatter": "rust-fmt.rust-fmt"
}

Extension Settings

• rustfmt.path: Path to rustfmt executable (default: "rustfmt")
• rustfmt.extraArgs: Additional arguments for rustfmt (default: [])

Usage

Automatic: Save any .rs file (if formatOnSave is enabled)

Manual:

• Command Palette (Ctrl+Shift+P / Cmd+Shift+P) → "Format Document with rustfmt"
• Right-click → "Format Document"
• Shortcut: Shift+Alt+F (Windows/Linux) or Shift+Option+F (Mac)

How it works

The extension runs rustfmt --emit stdout on your code and applies the formatted result. It automatically finds and respects rustfmt.toml configuration in your project, or uses Rust standard formatting rules if no config exists.