rust-lang / rust-lang/rustfmt

Option to remove spaces between braces in struct and blocks

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C-feature-request P-low
Dominant language
Rust
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Avg merge
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Merged PRs (30d)
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Description

Feature Request

Right now braces are visually inconsistent with parenthesis and brackets.
Rustfmt will do A(a,b) but B { a, b }.

An option to remove the spaces around braces in structs, and blocks would be interesting.

For example

struct Point{x: i64, y: i64}
struct Other(i64, i64)

fn foo(x: i64, y: i64) -> (Point, Other) {
  let x = if x < 0 {0} else {x};
  (Point{x, y}, Other(x, y))
}
Motivation

This would feel more consistent with other delimiters and would make the inline blocks less unnecessarily spaced out.

Contributor guide

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue names no files, tests, or entry points. Start by locating rustfmt's option handling and the formatting logic for struct fields and block expressions, then check existing delimiter-spacing tests. Done means the new option consistently removes brace-adjacent spaces in the examples while preserving current behavior by default.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
tooling
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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