[Feature Request] Option to force multi-line formatting for long class strings

[ahmed-ghallap]

Hello team,

Thank you for developing this extremely useful Prettier plugin!

I would like to propose an option to force the class string to break into multiple lines, even if the string is shorter than Prettier's global printWidth.

🌟 The Proposed Feature

A new option, perhaps something like tailwindForceMultiline: boolean or tailwindClassBreak: 'always' | 'if-exceeds-print-width' (default), that would ensure each class (or a small group of related classes) is placed on its own line after the opening quote.

💡 Justification and Use Case (The Tailwind Class Folding Benefit)

While Prettier's printWidth handles line wrapping, having all classes strictly on separate lines offers a huge benefit when using editor features like VS Code's tailwind-class-fold extension.

1. Folding: When a long class string is folded/collapsed by the extension, it is represented by a small tag (e.g., [... 15 classes]).
2. Editing: When a user clicks this folded tag to expand the classes, the current behavior (often a single long line or an arbitrary wrap) makes individual class editing difficult.
3. The Improvement: If the plugin formats the classes into a clean, multi-line block, editing becomes trivial after expansion:

Example of desired output (after expansion):

<div class="
  flex items-center justify-between
   w-full h-screen
   px-10 py-5
  bg-gray-800
  shadow-lg
">
    ... content ...
</div>