Format derive attributes vertically
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C-feature-request
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- Dominant language
- Rust
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Description
Hi!
I'd like to format my #[derive(..)] attributes vertically - like this:
#[derive(
Clone,
Default,
PartialEq,
)]
I've tried the following in my rustfmt.toml, but this seemed to have no effect.
attr_fn_like_width = 1 # no effect?
attr_fn_like_width = 0 # nor this
Also adding a trailing comma to the list doesn't work. rustfmt just removes the comma and reformats the list horizontally.
Any help appreciated!
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the provided Rust derive example with the shown rustfmt.toml settings and compare the current horizontal output with the requested vertical form. Trace the existing attribute-formatting behavior, then verify that the chosen configuration can produce vertical derive attributes while preserving the requested trailing-comma 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