update indent-blankline conf

lua/config/indent-blankline.lua

@@ -1,3 +1,6 @@
+local api = vim.api
+
+local exclude_ft = { "help", "git", "markdown", "snippets", "text", "gitconfig", "alpha" }
 require("indent_blankline").setup({
   -- U+2502 may also be a good choice, it will be on the middle of cursor.
   -- U+250A is also a good choice
@@ -5,19 +8,22 @@ require("indent_blankline").setup({
   show_end_of_line = false,
   disable_with_nolist = true,
   buftype_exclude = { "terminal" },
-  filetype_exclude = { "help", "git", "markdown", "snippets", "text", "gitconfig", "alpha" },
+  filetype_exclude = exclude_ft,
 })
 
-vim.cmd([[
-function! Should_activate_indentblankline() abort
-  if index(g:indent_blankline_filetype_exclude, &filetype) == -1
-    IndentBlanklineEnable
-  endif
-endfunction
+local gid = api.nvim_create_augroup("indent_blankline", { clear = true })
+api.nvim_create_autocmd("InsertEnter", {
+  pattern = "*",
+  group = gid,
+  command = "IndentBlanklineDisable"
+})
 
-augroup indent_blankline
-  autocmd!
-  autocmd InsertEnter * IndentBlanklineDisable
-  autocmd InsertLeave * call Should_activate_indentblankline()
-augroup END
-]])
+api.nvim_create_autocmd("InsertLeave", {
+  pattern = "*",
+  group = gid,
+  callback = function()
+    if not vim.tbl_contains(exclude_ft, vim.bo.filetype) then
+      vim.cmd [[IndentBlanklineEnable]]
+    end
+  end
+})