Chris@4: Possible upgrades to gzfilebuf:
Chris@4: 
Chris@4: - The ability to do putback (e.g. putbackfail)
Chris@4: 
Chris@4: - The ability to seek (zlib supports this, but could be slow/tricky)
Chris@4: 
Chris@4: - Simultaneous read/write access (does it make sense?)
Chris@4: 
Chris@4: - Support for ios_base::ate open mode
Chris@4: 
Chris@4: - Locale support?
Chris@4: 
Chris@4: - Check public interface to see which calls give problems
Chris@4:   (due to dependence on library internals)
Chris@4: 
Chris@4: - Override operator<<(ostream&, gzfilebuf*) to allow direct copying
Chris@4:   of stream buffer to stream ( i.e. os << is.rdbuf(); )