cspell.nvim

A companion plugin for nvimtools/none-ls.nvim, adding support for cspell diagnostics and code actions.

Diagnostics

local cspell = require('cspell')
require("null-ls").setup {
    sources = {
        cspell.diagnostics
    }
}

Defaults

• Filetypes: {}
• Method: diagnostics
• Command: cspell
• Args: dynamically resolved (see diagnostics source)

Code Actions

local cspell = require('cspell')
require("null-ls").setup {
    sources = {
        cspell.diagnostics,
        cspell.code_actions,
    }
}

Defaults

• Filetypes: {}
• Method: code_action

Configuration options

All the configuration properties are optional and they're used for the code actions.

But if you define them, make sure to add them to both the diagnostics and the code_actions. We need to do that to start reading and parsing the CSpell configuration asynchronously as soon as we get the first diagnostic.

local config = {
  -- The CSpell configuration file can take a few different names this option
  -- lets you specify which name you would like to use when creating a new
  -- config file from within the `Add word to cspell json file` action.
  --
  -- See the currently supported files in https://github.com/davidmh/cspell.nvim/blob/main/lua/cspell/helpers.lua
  config_file_preferred_name = 'cspell.json',

  -- A list of directories that contain additional cspell.json config files or
  -- support the creation of a new config file from a code action
  --
  -- looks for a cspell config in the ~/.config/ directory, or creates a file in the directory
  -- using 'config_file_preferred_name' when a code action for one of the locations is selected
  cspell_config_dirs = { "~/.config/" }

  --- A way to define your own logic to find the CSpell configuration file.
  ---@params directory The same directory defined in the source,
  --             defaulting to vim.loop.cwd()
  ---@return string|nil The path of the json file
  find_json = function(directory)
  end,

  -- Will find and read the cspell config file synchronously, as soon as the
  -- code actions generator gets called.
  --
  -- If you experience UI-blocking during the first run of this code action, try
  -- setting this option to false.
  -- See: https://github.com/davidmh/cspell.nvim/issues/25
  read_config_synchronously = true,

  ---@param cspell string The contents of the CSpell config file
  ---@return table
  decode_json = function(cspell_str)
  end,

  ---@param cspell table A lua table with the CSpell config values
  ---@return string
  encode_json = function(cspell_tbl)
  end,

  ---@param payload UseSuggestionSuccess
  on_use_suggestion = function(payload)
      -- Includes:
      payload.misspelled_word
      payload.suggestion
      payload.cspell_config_path
      payload.generator_params
  end

  ---@param payload AddToJSONSuccess
  on_add_to_json = function(payload)
      -- Includes:
      payload.new_word
      payload.cspell_config_path
      payload.generator_params

      -- For example, you can format the cspell config file after you add a word
      os.execute(
          string.format(
              "jq -S '.words |= sort' %s > %s.tmp && mv %s.tmp %s",
              payload.cspell_config_path,
              payload.cspell_config_path,
              payload.cspell_config_path,
              payload.cspell_config_path
          )
      )
  end

  ---@param payload AddToDictionarySuccess
  on_add_to_dictionary = function(payload)
      -- Includes:
      payload.new_word
      payload.cspell_config_path
      payload.generator_params
      payload.dictionary_path

      -- For example, you can sort the dictionary after adding a word
      os.execute(
          string.format(
              "sort %s -o %s",
              payload.dictionary_path,
              payload.dictionary_path
          )
      )
  end

  --- DEPRECATED
  --- Callback after a successful execution of a code action.
  ---@param cspell_config_file_path string|nil
  ---@param params GeneratorParams
  ---@param action_name 'use_suggestion'|'add_to_json'|'add_to_dictionary'
  on_success = function(cspell_config_file_path, params, action_name)
  end
}

local cspell = require('cspell')
require("null-ls").setup {
    sources = {
        cspell.diagnostics.with({ config = config }),
        cspell.code_actions.with({ config = config }),
    }
}

Notes

• The code action source depends on the diagnostics, so make sure to register it too.

Tests

The test suite depends on plenary.nvim.

Run ./tests/run.sh in the root of the project to run the suite or use neotest to run individual tests from within Neovim.

To avoid a dependency on any plugin managers, the test suite will set up its plugin runtime under the ./tests directory to always have a plenary version available.

If you run into plenary-related issues while running the tests, make sure you have an up-to-date version of the plugin by clearing that cache with rm -rf .tests/.

All tests expect the latest Neovim master.

TODO

• Custom configuration examples

Credits

These sources were initially written in jose-elias-alvarez/null-ls.nvim, with contributions from: @JA-Bar, @PumpedSardines, @Saecki, @Sloff, @marianozunino, @mtoohey31 and @yoo.