The functions that operate on *open* files, yes. Not read_file_info. On 06/27/2014 04:03 PM, Anthony Ramine wrote: > AFAIK, most functions in file can take a #file_descriptor{} and these end up as direct calls to #file_descriptor.module which is prim_file when ‘raw’ is given to file:open/2. > -- Loïc Hoguin http://ninenines.eu