Implement comprehensive spell checking support

[arkid15r]

Implement Comprehensive Spell Checking Support

Summary

To ensure high-quality localization for the Open World Holidays Framework, we need to implement comprehensive spell-checking support. This should work both locally and within CI/CD pipelines, covering as many holidays l10n languages as possible while integrating seamlessly with existing IDE tools. Ideally, this functionality should be part of pre-commit to enforce consistency before changes are committed.

Requirements

• Support for multiple languages to cover holidays localizations.
• Integration with pre-commit for automated spell checking.
• Compatibility with CI/CD pipelines (GitHub Actions, etc.).
• Support for popular IDEs (VS Code, PyCharm, etc.).
• Open-source and actively maintained tooling.

Recommended Tools

Feature	cspell	typos	hunspell
Multi-language support	✅ Yes (many dictionaries)	⚠️ Limited but configurable	✅ Yes (widest coverage)
Pre-commit support	✅ Yes	✅ Yes	❌ Needs extra setup
CI/CD friendly	✅ Yes	✅ Yes	✅ Yes
IDE Integration	✅ VS Code, JetBrains	❌ No	⚠️ Limited (CLI-based)
Custom Dictionaries	✅ Yes	✅ Yes	✅ Yes
Performance	⚡ Fast	⚡ Very Fast	🐢 Slower
Grammar Checking	❌ No	❌ No	❌ No

Tool Overviews

1. cspell

   • Supports multiple languages with configurable dictionaries.
   • Works with pre-commit, CI/CD, and integrates with VS Code, JetBrains IDEs, and more.
   • Fast and actively maintained.

2. typos

   • Lightweight, fast typo checker with good multi-language support.
   • Works well in pre-commit and CI/CD with minimal configuration.
   • No IDE integration, but great for automation.

3. hunspell

   • Most extensive language support (90+ dictionaries available).
   • Used in LibreOffice, Firefox, and Google Chrome.
   • Requires more setup for pre-commit but is highly customizable.

Next Steps

• Evaluate which tool best supports the localization needs of holidays.
• Integrate the chosen tool into pre-commit and CI/CD workflows.
• Define a custom dictionary for common terms and names.

[sumedhx]

Hello, Does Vacanza is participate in GSOC 2025. I wanted to Contribute in GSOC 2025. If yes, let me know so i can understand the code base.

[arkid15r]

Hello, Does Vacanza is participate in GSOC 2025. I wanted to Contribute in GSOC 2025. If yes, let me know so i can understand the code base.

Hi @sumedhx
we applied for participation in GSoC 2025. You can start from https://github.com/vacanza/holidays/blob/dev/CONTRIBUTING.rst

[SammanSarkar]

I would love to work on this. Please assign me this issue @arkid15r

[arkid15r]

You already have this one #2352 assigned.