rust-lang / rust-lang/rustfmt

Add options to not wrap long collections

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#810 10 comments 5 reactions 0 assignees View on GitHub

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C-feature-request closeable??? E-needs-design P-low
Dominant language
Rust
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Avg merge
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Merged PRs (30d)
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Description

An options, perhaps ignore_arrays, that would keep the following format:

let mut board: [[char; 3]; 3] = [
    ['O', 'O', 'O'],
    ['O', 'O', 'O'],
    ['O', 'O', 'O']
];

Instead of inlining everything like it does now:

let mut board: [[char; 3]; 3] = [['O', 'O', 'O'], ['O', 'O', 'O'], ['O', 'O', 'O']];

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Research direction

The issue names no files or tests. Start by locating rustfmt's handling of array or collection literals and its option definitions, then inspect related formatting tests; done means the requested option preserves multiline collection formatting without changing the default behavior.

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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