Vue autofix breaks inline CSS custom properties in style attribute

[TiroZit]

Describe the bug

When using an inline CSS custom property inside a Vue template, autofix rewrites the style attribute into broken formatting.

This happens with a simple inline custom property such as --color: #000.

Reproduction

Minimal example:

<template>
  <div class="box" style="--color: #000">
    Hello
  </div>
</template>

After autofix, it becomes:

<template>
  <div
    class="box" style="

--color: #000"
  >
    Hello
  </div>
</template>

System Info

System:
  OS: macOS v26.4

Binaries:
  Node: v22.21.1
  npm: v10.9.4

Used Package Manager

npm

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• The provided reproduction is a minimal reproducible of the bug.

Contributions

• I am willing to submit a PR to fix this issue
• I am willing to submit a PR with failing tests (actually just go ahead and do it, thanks!)