Exporting paths with non-ASCII characters with tlclient on UNIX doesn't work perfect. For example, the FLTK file browser doesn't understand UTF-8 locales, so with UTF-8 file names, the directory listing looks ugly.
One solution to this might be to override fl_filename_list by implementing it in tlclient. It could convert from the locale encoding to Latin1.
Also, we are currently storing path names in tlclient.conf encoded as UTF-8 (which i believe is a very good). When tlclient loads these paths, it should convert to Latin1, so that these are correctly displayed in the GUI.
This was probably fixed when we upgraded to a version of FLTK which handles UTF-8. We need to confirm it though. Perhaps the reoccuring tests need to include this?