Spell Checking in Vim

Vim has built-in support for spell checking. This built-in function provides basic spell checking. For example, it does not recognize 'localhost', 'Lua' or 'Node.js'. However, new words can be added quickly via zg in normal mode.

To check grammar and stylish errors, Grammarly or LanguageTool can be used.

I prefer LanguageTool because it is open source. All the errors can be checked with ltex-ls locally, without making any network requests.

Unfortunately, ltex-ls does not support adding unknown words to dictionary. Previously, as a workaround, I disabled the spell checking rule from ltex-ls, and use Neovim's built-in spell checking instead. Now I use ltex_extra.nvim, which provides code actions for adding unknown words, disable rules, and hide false positives.

BTW, the Grammarly LSP does not support this, either.