@return An hFILE pointer, or NULL (with _errno_ set) if an error occurred.
The usual fopen(3) _mode_ letters are supported: one of
r (read), w (write), a (append), optionally followed by any of
+ (update), e (close on exec(2)), x (create exclusively),
: (indicates scheme-specific variable arguments follow).
@return An hFILE pointer, or NULL (with _errno_ set) if an error occurred.
The usual fopen(3) _mode_ letters are supported: one of r (read), w (write), a (append), optionally followed by any of + (update), e (close on exec(2)), x (create exclusively), : (indicates scheme-specific variable arguments follow).