File header prefix field unused?
Digging deeper into #160 (closed) and #165 (closed), I cannot seem to find a place in SIONlib where the prefix field in the
_sion_filedesc struct is actually used. It is written to files and read back in, it is printed by siondump, but the file names for multi-files all seem to be calculated from the file name arguments passed to the various open functions.
Am I missing something or is this field superfluous and might be dropped in the next file format?