fix: unknown filetype error message (#1034)

lua/telescope/previewers/utils.lua

@@ -1,7 +1,7 @@
 local context_manager = require('plenary.context_manager')
 
 local has_ts, _ = pcall(require, 'nvim-treesitter')
-local _, ts_highlight = pcall(require, 'nvim-treesitter.highlight')
+local _, ts_configs = pcall(require, 'nvim-treesitter.configs')
 local _, ts_parsers = pcall(require, 'nvim-treesitter.parsers')
 
 local Job = require('plenary.job')
@@ -70,22 +70,39 @@ utils.regex_highlighter = function(bufnr, ft)
   return false
 end
 
+local treesitter_attach = function(bufnr, ft)
+  local lang = ts_parsers.ft_to_lang(ft)
+  if ts_parsers.has_parser(lang) then
+    local config = ts_configs.get_module "highlight"
+    if vim.tbl_contains(config.disable, lang) then
+      return false
+    end
+    for k, v in pairs(config.custom_captures) do
+      vim.treesitter.highlighter.hl_map[k] = v
+    end
+    vim.treesitter.highlighter.new(ts_parsers.get_parser(bufnr, lang))
+    local is_table = type(config.additional_vim_regex_highlighting) == "table"
+    if config.additional_vim_regex_highlighting and
+       (not is_table or vim.tbl_contains(config.additional_vim_regex_highlighting, lang)) then
+      vim.api.nvim_buf_set_option(bufnr, "syntax", ft)
+    end
+    return true
+  end
+  return false
+end
+
 -- Attach ts highlighter
 utils.ts_highlighter = function(bufnr, ft)
   if not has_ts then
     has_ts, _ = pcall(require, 'nvim-treesitter')
     if has_ts then
-      _, ts_highlight = pcall(require, 'nvim-treesitter.highlight')
+      _, ts_configs = pcall(require, 'nvim-treesitter.configs')
       _, ts_parsers = pcall(require, 'nvim-treesitter.parsers')
     end
   end
 
   if has_ts and has_filetype(ft) then
-    local lang = ts_parsers.ft_to_lang(ft);
-    if ts_parsers.has_parser(lang) then
-      ts_highlight.attach(bufnr, lang)
-      return true
-    end
+    return treesitter_attach(bufnr, ft)
   end
   return false
 end