macboolk doesn't like lua :c

util.lua

@@ -0,0 +1,11 @@
+-- @return true | false | nil
+function get_oil_nnn(winnr)
+  local ok, value = pcall(vim.api.nvim_win_get_var, winnr, 'nnn')
+  if not ok then
+    return nil
+  end
+  if value then
+    return true
+  end
+  return false
+end