besser wirds licht denk ich

lua/custom/plugins/ltex.lua

@@ -27,6 +27,10 @@ local ltex_fts = {
   'rst',
 }
 
+local map = function(keys, func, desc)
+  vim.keymap.set('n', keys, func, { buffer = vim.buf, desc = 'LSP[LTEX]: ' .. desc })
+end
+
 LTEX_SETTINGS = {
   capabilities = CAPABILITIES,
   on_attach = function(client, bufnr)
@@ -59,31 +63,34 @@ LTEX_SETTINGS = {
 }
 
 -- load token and additional languagetool items later if specified
+local do_not_use_api_key = true
 local has_api_key, apiKey = utils.try_require 'custom.secret.languagetool'
-if has_api_key and apiKey ~= '' then
-  print(string.format('apiKey for ltex found: %s' % apiKey))
+if not do_not_use_api_key and has_api_key and apiKey ~= '' then
   LTEX_SETTINGS = vim.tbl_deep_extend('keep', LTEX_SETTINGS, {
     settings = {
       languageToolOrg = {
         apiKey = apiKey,
         username = 'accounts@cscherr.de',
-        languageToolHttpServerUrl = 'https://api.languagetoolplus.com/v2/',
       },
-      languageToolHttpServerUrl = 'https://api.languagetoolplus.com/v2/',
+      languageToolHttpServerUrl = 'https://api.languagetoolplus.com/',
     },
   })
 else
+  if not do_not_use_api_key then
     print 'apiKey for ltex/languagetool is not specified'
   end
+end
 
 return {
   'barreiroleo/ltex_extra.nvim',
-  ft = { 'markdown', 'tex' },
+  ft = ltex_fts,
   dependencies = { 'neovim/nvim-lspconfig' },
-  -- yes, you can use the opts field, just I'm showing the setup explicitly
   config = function()
     require('ltex_extra').setup {
       server_opts = LTEX_SETTINGS,
     }
+    map('<leader>tS', function()
+      vim.cmd 'LspStart ltex'
+    end, 'Enable spell checking with languagetool')
   end,
 }

lua/custom/utils.lua

@@ -16,14 +16,14 @@ M.tokenize_args = function(raw)
   --
   -- This means we're better of implementing the lexer with an algorithm.
   local t = {}
-  local current = ""
+  local current = ''
   local in_str = false
   local str_seek
-  for c in string.gmatch(raw, ".") do -- iterate through all chars
-    if c == " " and not in_str then
+  for c in string.gmatch(raw, '.') do -- iterate through all chars
+    if c == ' ' and not in_str then
       if string.len(current) > 0 then
         table.insert(t, current)
-        current = ""
+        current = ''
       end
     elseif c == '"' and not in_str then
       in_str = true
@@ -34,7 +34,7 @@ M.tokenize_args = function(raw)
     elseif c == str_seek and in_str then
       in_str = false
       table.insert(t, current)
-      current = ""
+      current = ''
     else
       current = current .. c
     end
@@ -50,18 +50,18 @@ end
 --- @param t any variable
 --- @return string t_dumped t dumped to string
 M.dump = function(t)
-  if type(t) == "table" then
-    local s = "{ "
+  if type(t) == 'table' then
+    local s = '{ '
     for k, v in pairs(t) do
-      if type(k) ~= "number" then
+      if type(k) ~= 'number' then
         k = '"' .. k .. '"'
       end
       if k ~= 1 then
-        s = s .. ", "
+        s = s .. ', '
       end
-      s = s .. "[" .. k .. "] = '" .. M.dump(v) .. "'"
+      s = s .. '[' .. k .. "] = '" .. M.dump(v) .. "'\n"
     end
-    return s .. " }"
+    return s .. ' }'
   else
     return tostring(t)
   end
@@ -81,4 +81,3 @@ M.try_require = function(module)
 end
 
 return M
-