I now have: as far as I can tell, no Nasal scripts are currently writing to /tmp, and given that upstream also support Windows, they would probably consider doing so to be a bug. I'll suggest removing this upstream, but currently don't consider it RC.I'm not aware of any that do, but haven't specifically looked.
Overwriting is allowed: on allowed paths/files, a script can use fopen() as the user running FlightGear.I'm not sure whether "write" here means overriding a file is okay or if it restricts to creating new files, though.