| txt when is_uri txt -> `Uri (UriManager.uri_of_string (fix_uri txt))
| txt when is_dir txt -> `Dir (MatitaMisc.normalize_dir txt)
| txt ->
| txt when is_uri txt -> `Uri (UriManager.uri_of_string (fix_uri txt))
| txt when is_dir txt -> `Dir (MatitaMisc.normalize_dir txt)
| txt ->