I’m using unix. The fact is the process of turning a ? into a file is called globbing, this is the same as “*”. Globbing is NOT part of file access. Globbing is performed on a value to turn it into a file name that can be opened. This is not the fault here
The fault here (IMHO) is in io_open in io.c
It is mistakenly interpreting the ? as a option seperator.. I understand your point, but lets face it Windows might have problems with colons and ? and *, but Unix has a problem with /
If you are multiplatform these issues should be taken into account. Some OS don’t support sub directories, but that is no reason to remove support for them! You can’t just adopt the lower common denominator!