add in ltex-ls for grammar and enable spell

init.lua

@@ -72,6 +72,9 @@ require('lazy').setup({
   -- Detect tabstop and shiftwidth automatically
   'tpope/vim-sleuth',
 
+  -- Grammar checking
+  'vigoux/ltex-ls.nvim',
+
   -- NOTE: This is where your plugins related to LSP can be installed.
   --  The configuration is done below. Search for lspconfig to find it below.
   {
@@ -513,6 +516,60 @@ cmp.setup {
   },
 }
 
+-- I want spell checking on in markdown etc.
+vim.api.nvim_create_augroup("spellcheck", { clear = true })
+vim.api.nvim_create_autocmd("FileType", {
+    group = "spellcheck",
+    pattern = { "gitcommit", "markdown", "mdx" },
+    command = "setlocal spell",
+})
+
+-- configure ltex-ls
+require 'ltex-ls'.setup {
+  on_attach = on_attach,
+  capabilities = capabilities,
+  use_spellfile = false,
+  filetypes = { "latex", "tex", "bib", "markdown", "gitcommit", "text" },
+  settings = {
+    ltex = {
+      enabled = { "latex", "tex", "bib", "markdown", },
+      language = "en",
+      diagnosticSeverity = "information",
+      sentenceCacheSize = 2000,
+      additionalRules = {
+        enablePickyRules = true,
+        motherTongue = "en",
+      },
+      disabledRules = {
+        en = { "EN_QUOTES" }
+      },
+      dictionary = (function()
+        -- For dictionary, search for files in the runtime to have
+        -- and include them as externals the format for them is
+        -- dict/{LANG}.txt
+        --
+        -- Also add dict/default.txt to all of them
+        local files = {}
+        for _, file in ipairs(vim.api.nvim_get_runtime_file("dict/*", true)) do
+          local lang = vim.fn.fnamemodify(file, ":t:r")
+          local fullpath = vim.fs.normalize(file, ":p")
+          files[lang] = { ":" .. fullpath }
+        end
+
+        if files.default then
+          for lang, _ in pairs(files) do
+            if lang ~= "default" then
+              vim.list_extend(files[lang], files.default)
+            end
+          end
+          files.default = nil
+        end
+        return files
+      end)(),
+    },
+  },
+}
+
 -- Confgiure the way that diagnostics look
 
 local diagconfig = {